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1. TP53 mutation status and consensus molecular subtypes of colorectal cancer in patients from Rwanda

Author

Augustin Nzitakera, Delphine Uwamariya, Hisami Kato, Jean Bosco Surwumwe, André Mbonigaba, Ella Larissa Ndoricyimpaye, Schifra Uwamungu, Felix Manirakiza, Marie Claire Ndayisaba, Gervais Ntakirutimana, Benoit Seminega, Vincent Dusabejambo, Eric Rutaganda, Placide Kamali, François Ngabonziza, Rei Ishikawa, Hirofumi Watanabe, Belson Rugwizangoga, Satoshi Baba, Hidetaka Yamada, Katsuhiro Yoshimura, Yasuhiro Sakai, Haruhiko Sugimura, and Kazuya Shinmura

Subjects
TP53, Mutation spectrum, Mutation pattern, Consensus molecular subtypes, Mismatch repair, Colorectal cancer, Neoplasms. Tumors. Oncology. Including cancer and carcinogens, RC254-282
Abstract

Abstract Background Mutations in the TP53 tumor suppressor gene are well-established drivers of colorectal cancer (CRC) development. However, data on the prevalence of TP53 variants and their association with consensus molecular subtype (CMS) classification in patients with CRC from Rwanda are currently lacking. This study addressed this knowledge gap by investigating TP53 mutation status concerning CMS classification in a CRC cohort from Rwanda. Methods Formalin-fixed paraffin-embedded (FFPE) tissue blocks were obtained from 51 patients with CRC at the University Teaching Hospital of Kigali, Rwanda. Exons 4 to 11 and their flanking intron-exon boundaries in the TP53 gene were sequenced using Sanger sequencing to identify potential variants. The recently established immunohistochemistry-based classifier was employed to determine the CMS of each tumor. Results Sequencing analysis of cancerous tissue DNA revealed TP53 pathogenic variants in 23 of 51 (45.1%) patients from Rwanda. These variants were predominantly missense types (18/23, 78.3%). The most frequent were c.455dup (p.P153Afs*28), c.524G > A (p.R175H), and c.733G > A (p.G245S), each identified in three tumors. Trinucleotide sequence context analysis of the 23 mutations (20 of which were single-base substitutions) revealed a predominance of the [C > N] pattern among single-base substitutions (SBSs) (18/20; 90.0%), with C[C > T]G being the most frequent mutation (5/18, 27.8%). Furthermore, pyrimidine bases (C and T) were preferentially found at the 5ʹ flanking position of the mutated cytosine (13/18; 72.2%). Analysis of CMS subtypes revealed the following distribution: CMS1 (microsatellite instability-immune) (6/51, 11.8%), CMS2 (canonical) (28/51, 54.9%), CMS3 (metabolic) (9/51, 17.6%), and CMS4 (mesenchymal) (8/51, 15.7%). Interestingly, the majority of TP53 variants were in the CMS2 subgroup (14/23; 60.1%). Conclusion Our findings indicate a high frequency of TP53 variants in CRC patients from Rwanda. Importantly, these variants are enriched in the CMS2 subtype. This study, representing the second investigation into molecular alterations in patients with CRC from Rwanda and the first to explore TP53 mutations and CMS classification, provides valuable insights into the molecular landscape of CRC in this understudied population.

Published
2024
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2. The spectrum of TP53 mutations in Rwandan patients with gastric cancer

Author

Augustin Nzitakera, Jean Bosco Surwumwe, Ella Larissa Ndoricyimpaye, Schifra Uwamungu, Delphine Uwamariya, Felix Manirakiza, Marie Claire Ndayisaba, Gervais Ntakirutimana, Benoit Seminega, Vincent Dusabejambo, Eric Rutaganda, Placide Kamali, François Ngabonziza, Rei Ishikawa, Belson Rugwizangoga, Yuji Iwashita, Hidetaka Yamada, Kimio Yoshimura, Haruhiko Sugimura, and Kazuya Shinmura

Subjects
TP53, Mutation spectrum, Mutation pattern, Genetic analysis, Gastric cancer, Rwanda, Ecology, QH540-549.5, Genetics, QH426-470
Abstract

Abstract Background Gastric cancer is the sixth most frequently diagnosed cancer and third in causing cancer-related death globally. The most frequently mutated gene in human cancers is TP53, which plays a pivotal role in cancer initiation and progression. In Africa, particularly in Rwanda, data on TP53 mutations are lacking. Therefore, this study intended to obtain TP53 mutation status in Rwandan patients with gastric cancer. Results Formalin-fixed paraffin-embedded tissue blocks of 95 Rwandan patients with histopathologically proven gastric carcinoma were obtained from the University Teaching Hospital of Kigali. After DNA extraction, all coding regions of the TP53 gene and the exon–intron boundary region of TP53 were sequenced using the Sanger sequencing. Mutated TP53 were observed in 24 (25.3%) of the 95 cases, and a total of 29 mutations were identified. These TP53 mutations were distributed between exon 4 and 8 and most of them were missense mutations (19/29; 65.5%). Immunohistochemical analysis for TP53 revealed that most of the TP53 missense mutations were associated with TP53 protein accumulation. Among the 29 mutations, one was novel (c.459_477delCGGCACCCGCGTCCGCGCC). This 19-bp deletion mutation in exon 5 caused the production of truncated TP53 protein (p.G154Wfs*10). Regarding the spectrum of TP53 mutations, G:C > A:T at CpG sites was the most prevalent (10/29; 34.5%) and G:C > T:A was the second most prevalent (7/29; 24.1%). Interestingly, when the mutation spectrum of TP53 was compared to three previous TP53 mutational studies on non-Rwandan patients with gastric cancer, G:C > T:A mutations were significantly more frequent in this study than in our previous study (p = 0.013), the TCGA database (p = 0.017), and a previous study on patients from Hong Kong (p = 0.006). Even after correcting for false discovery, statistical significance was observed. Conclusions Our results suggested that TP53 G:C > T:A transversion mutation in Rwandan patients with gastric cancer is more frequent than in non-Rwandan patients with gastric cancer, indicating at an alternative etiological and carcinogenic progression of gastric cancer in Rwanda.

Published
2024
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3. Clinicopathological Characteristics and Mutational Landscape of APC, HOXB13, and KRAS among Rwandan Patients with Colorectal Cancer

Author

Felix Manirakiza, Eric Rutaganda, Hidetaka Yamada, Yuji Iwashita, Belson Rugwizangoga, Benoit Seminega, Vincent Dusabejambo, Gervais Ntakirutimana, Deogratias Ruhangaza, Annette Uwineza, Kazuya Shinmura, and Haruhiko Sugimura

Subjects
colorectal cancer, genetics, APC, KRAS, HOXB13, mutation, Biology (General), QH301-705.5
Abstract

Cancer research in Rwanda is estimated to be less than 1% of the total African cancer research output with limited research on colorectal cancer (CRC). Rwandan patients with CRC are young, with more females being affected than males, and most patients present with advanced disease. Considering the paucity of oncological genetic studies in this population, we investigated the mutational status of CRC tissues, focusing on the Adenomatous polyposis coli (APC), Kirsten rat sarcoma (KRAS), and Homeobox B13 (HOXB13) genes. Our aim was to determine whether there were any differences between Rwandan patients and other populations. To do so, we performed Sanger sequencing of the DNA extracted from formalin-fixed paraffin-embedded adenocarcinoma samples from 54 patients (mean age: 60 years). Most tumors were located in the rectum (83.3%), and 92.6% of the tumors were low-grade. Most patients (70.4%) reported never smoking, and 61.1% of patients had consumed alcohol. We identified 27 variants of APC, including 3 novel mutations (c.4310_4319delAAACACCTCC, c.4463_4470delinsA, and c.4506_4507delT). All three novel mutations are classified as deleterious by MutationTaster2021. We found four synonymous variants (c.330C>A, c.366C>T, c.513T>C, and c.735G>A) of HOXB13. For KRAS, we found six variants (Asp173, Gly13Asp, Gly12Ala, Gly12Asp, Gly12Val, and Gln61His), the last four of which are pathogenic. In conclusion, here we contribute new genetic variation data and provide clinicopathological information pertinent to CRC in Rwanda.

Published
2023
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4. Correction: The spectrum of TP53 mutations in Rwandan patients with gastric cancer

Author

Augustin Nzitakera, Jean Bosco Surwumwe, Ella Larissa Ndoricyimpaye, Schifra Uwamungu, Delphine Uwamariya, Felix Manirakiza, Marie Claire Ndayisaba, Gervais Ntakirutimana, Benoit Seminega, Vincent Dusabejambo, Eric Rutaganda, Placide Kamali, François Ngabonziza, Rei Ishikawa, Belson Rugwizangoga, Yuji Iwashita, Hidetaka Yamada, Kimio Yoshimura, Haruhiko Sugimura, and Kazuya Shinmura

Subjects
Ecology, QH540-549.5, Genetics, QH426-470
Published
2024
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5. Challenges in the Recognition and Management of Acute Kidney Injury by Hospitals in Resource-Limited Settings

Author

Grace Igiraneza, Vincent Dusabejambo, Fredric O. Finklestein, and Asghar Rastegar

Subjects
acute kidney injury, diagnostic capacity, resource-limited setting, therapeutic options, Diseases of the genitourinary system. Urology, RC870-923
Abstract

Introduction: Acute kidney injury (AKI) is prevalent in low- and middle-income countries (LMIC) and is associated with significant morbidity and mortality, particularly among hospitalized patients. Successful strategies for the prevention and management of AKI in these countries are dependent on the capacity of primary care centers to provide optimal initial management of patients at risk for this disorder. Methods: From December 2018 to February 2019, using mixed methods, we assessed hospital capacity and the knowledge of clinicians relevant to the prevention, diagnosis, and management of AKI in Rwanda. A checklist based on Kidney Disease: Improving Global Outcomes (KDIGO) guidelines and clinical vignette-based assessment tool were used to assess hospital capacity and provider knowledge base, respectively. Data were analyzed using stata 13 with findings reported as simple frequencies or means with standard deviation. Multivariate analysis was used to assess factors associated with a higher knowledge score among clinicians. Results: Ten hospitals and 193 health care providers from sites throughout Rwanda participated in the survey. Surveyed hospitals were equipped with basic general medical equipment but were deficient in diagnostic tools and medical supplies that would allow the diagnosis and nondialytic management of AKI. Although 20% of the hospitals could offer hemodialysis services, peritoneal dialysis services were nonexistent. With regard to knowledge base, the health care providers demonstrated significant deficiencies in the diagnosis and management of AKI. The mean knowledge score for all health providers was 6.3 (±1.5) of a maximum of 11, with a mean (±SD) score for doctors, nurses, and midwives of 6.3 ± 2.05, 6.4 ± 1.3, and 6.08 ± 1.2, respectively. On multivariate analysis, the length of clinical experience and age of the respondents were significantly associated with participants’ knowledge score. Conclusion: This study documents significant barriers to providing optimal management of AKI in primary health care settings in Rwanda, a resource-limited setting. These include lack of specialized medical personnel, significant knowledge gaps among primary health care providers, suboptimal diagnostic capacity, and limited treatment options for detection and management of AKI.

Published
2020
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6. Sero-prevalence of anti-Leptospira antibodies and associated risk factors in rural Rwanda: A cross-sectional study.

Author

Etienne Ntabanganyimana, Robert Giraneza, Vincent Dusabejambo, Appolinaire Bizimana, Camila Hamond, Augustin Iyamuremye, Placide Nshizirungu, Raphael Uzabakiriho, Marc Munyengabe, Elsio A Wunder, and Cameron Page

Subjects
Arctic medicine. Tropical medicine, RC955-962, Public aspects of medicine, RA1-1270
Abstract

BackgroundLeptospirosis is a zoonotic disease transmitted through the urine of wild and domestic animals, and is responsible for over 50,000 deaths each year. In East Africa, prevalence varies greatly, from as low as 7% in Kenya to 37% in Somalia. Transmission epidemiology also varies around the world, with research in Nicaragua showing that rodents are the most clinically important, while studies in Egypt and Chile suggest that dogs may play a more important role. There are no published studies of leptospirosis in Rwanda.Methods & findingsWe performed a cross-sectional survey of asymptomatic adults recruited from five occupational categories. Serum samples were tested using ELISA and Microscopic Agglutination Test (MAT). We found that 40.1% (151/377) of asymptomatic adults had been exposed to Leptospira spp. Almost 36.3% of positive subjects reported contact with rats (137/377) which represent 90.7% among positive leptospira serology compared with 48.2% of negative subjects (182/377) which represent 80.5% among negative leptospira serology (OR 2.37, CI 1.25-4.49) and 1.7 fold on prevalence ratio and 2.37 of odd ratio. Furthermore, being a crop farmer was significantly associated with leptospirosis (OR 2.06, CI 1.29-3.28). We identified 6 asymptomatic subjects (1.6%) who met criteria for acute infection.ConclusionsThis study demonstrates a high prevalence of leptospiral antibodies infection among asymptomatic adults in rural Rwanda, particularly relative to neighboring countries. Although positive subjects were more likely to report rat contact, we found no independent association between rats and leptospirosis infection. Nonetheless, exposure was high among crop farmers, which is supportive of the hypothesis that rats together with domestic livestock might contribute to the transmission. Further studies are needed to understand infecting Leptospira servers and elucidate the transmission epidemiology in Rwanda and identify means of host transmitters.

Published
2021
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7. Use of adenosine deaminase (ADA) to diagnose suspected peritoneal tuberculosis in Rwanda: a cross-sectional study

Author

Jules Ntwari, Vincent Dusabejambo, and Cameron Page

Subjects
Tuberculosis, Rwanda, Infectious disease, Adenosine deaminase, Infectious and parasitic diseases, RC109-216
Abstract

Abstract Background Peritoneal tuberculosis is the most common cause of low albumin gradient ascites in developing countries, but it can be easily confused with other causes of ascites. Peritoneal tuberculosis requires early recognition of symptoms and signs in order to make a quick diagnosis for appropriate treatment. Measurement of adenosine deaminase (ADA) level > 39 in ascites fluid is an established test to diagnose peritoneal tuberculosis. Many low-income countries do not currently test for adenosine deaminase in ascites fluid, including Rwanda. Method Cross-sectional, descriptive study conducted through the Internal Medicine Department of three university teaching hospitals in Rwanda. Participants were patients older than 16 years presenting to tertiary referral hospitals with ascites of unknown cause. Results Of 103 ascites fluid samples collected, 52 of them (50.5%) had an elevated ADA, consistent with a presumptive diagnosis of peritoneal TB. Among those 52 subjects diagnosed with peritoneal TB, 39 out of 52 (75%) did not receive anti-TB medications. Among the 17 subjects who were treated with anti-TB medications, 4 of 17 (23.6%) did not have peritoneal TB based on ADA level. Samples with low-albumin gradient ascites were more likely to have high ADA ≥39 IU/L (p = 0.039). Conclusion Our findings suggest that 3out of 4 patients with PTB in Rwanda are not getting TB treatment and 1 in 4 patients who are taking TB medications do not need it. Even if the true number of Rwandans who are being undertreated and overtreated is less than our study suggests, these results should prompt a larger study of peritoneal tuberculosis. Adding adenosine deaminase (ADA) to the diagnostic tools available to clinicians could help achieve the goal of correctly putting every Rwandan with tuberculosis on treatment, while avoiding unnecessary tuberculosis medications in those who do not have the disease.

Published
2020
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8. Mathematical Modelling of Glucose-Insulin System and Test of Abnormalities of Type 2 Diabetic Patients

Author

Wellars Banzi, Immaculate Kambutse, Vincent Dusabejambo, Eric Rutaganda, Froduald Minani, Japhet Niyobuhungiro, Lydie Mpinganzima, and Jean Marie Ntaganda

Subjects
Mathematics, QA1-939
Abstract

This paper presents a mathematical model of glucose-insulin dynamics which is specific for type 2 diabetic patients. The general modelling is obtained by simplification of a global compartmental model by John Thomas Sorensen. The model parameters are estimated using nonlinear optimization and data collected in Rwanda for type 2 diabetic patients. In order to identify and evaluate possible abnormalities of type 2 diabetic patients, the Sampling Importance Resampling (SIR) particle filtering algorithm is used and implemented through discretization of the developed mathematical model. This process is done by clamping insulin and glucose concentrations at around clinical trial values as proposed by Defronzo. Furthermore, for detecting potential abnormalities in type 2 diabetic patients, we compare our results with results obtained from a simulation of the mathematical model for healthy subjects. The proposed mathematical model allows further investigation of the dynamic behavior of glucose, insulin, glucagon, stored insulin, and labile insulin in different organs for type 2 diabetic patients.

Published
2021
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9. Health Professional Training and Capacity Strengthening Through International Academic Partnerships: The First Five Years of the Human Resources for Health Program in Rwanda

Author

Corrado Cancedda, Philip Cotton, Joseph Shema, Stephen Rulisa, Robert Riviello, Lisa V. Adams, Paul E. Farmer, Jeanne N. Kagwiza, Patrick Kyamanywa, Donatilla Mukamana, Chrispinus Mumena, David K. Tumusiime, Lydie Mukashyaka, Esperance Ndenga, Theogene Twagirumugabe, Kaitesi B. Mukara, Vincent Dusabejambo, Timothy D. Walker, Emmy Nkusi, Lisa Bazzett-Matabele, Alex Butera, Belson Rugwizangoga, Jean Claude Kabayiza, Simon Kanyandekwe, Louise Kalisa, Faustin Ntirenganya, Jeffrey Dixson, Tanya Rogo, Natalie McCall, Mark Corden, Rex Wong, Madeleine Mukeshimana, Agnes Gatarayiha, Egide Kayonga Ntagungira, Attila Yaman, Juliet Musabeyezu, Anne Sliney, Tej Nuthulaganti, Meredith Kiernan, Peter Okwi, Joseph Rhatigan, Jane Barrow, Kim Wilson, Adam C. Levine, Rebecca Reece, Michael Koster, Rachel T. Moresky, Jennifer E. O’Flaherty, Paul E. Palumbo, Rashna Ginwalla, Cynthia A. Binanay, Nathan Thielman, Michael Relf, Rodney Wright, Mary Hill, Deborah Chyun, Robin T. Klar, Linda L. McCreary, Tonda L. Hughes, Marik Moen, Valli Meeks, Beth Barrows, Marcel E. Durieux, Craig D. McClain, Amy Bunts, Forrest J. Calland, Bethany Hedt-Gauthier, Danny Milner, Giuseppe Raviola, Stacy E. Smith, Meenu Tuteja, Urania Magriples, Asghar Rastegar, Linda Arnold, Ira Magaziner, and Agnes Binagwaho

Subjects
Health Professional Training, Human Resource for Health, Institutional Capacity, Strengthening, Academic Partnerships, Rwanda, Public aspects of medicine, RA1-1270
Abstract

Background The Rwanda Human Resources for Health Program (HRH Program) is a 7-year (2012-2019) health professional training initiative led by the Government of Rwanda with the goals of training a large, diverse, and competent health workforce and strengthening the capacity of academic institutions in Rwanda. Methods The data for this organizational case study was collected through official reports from the Rwanda Ministry of Health (MoH) and 22 participating US academic institutions, databases from the MoH and the College of Medicine and Health Sciences (CMHS) in Rwanda, and surveys completed by the co-authors. Results In the first 5 years of the HRH Program, a consortium of US academic institutions has deployed an average of 99 visiting faculty per year to support 22 training programs, which are on track to graduate almost 4600 students by 2019. The HRH Program has also built capacity within the CMHS by promoting the recruitment of Rwandan faculty and the establishment of additional partnerships and collaborations with the US academic institutions. Conclusion The milestones achieved by the HRH Program have been substantial although some challenges persist. These challenges include adequately supporting the visiting faculty; pairing them with Rwandan faculty (twinning); ensuring strong communication and coordination among stakeholders; addressing mismatches in priorities between donors and implementers; the execution of a sustainability strategy; and the decision by one of the donors not to renew funding beyond March 2017. Over the next 2 academic years, it is critical for the sustainability of the 22 training programs supported by the HRH Program that the health-related Schools at the CMHS significantly scale up recruitment of new Rwandan faculty. The HRH Program can serve as a model for other training initiatives implemented in countries affected by a severe shortage of health professionals.

Published
2018
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10. Efficacy of Helicobacter pylori eradication regimens in Rwanda: a randomized controlled trial

Author

Jean Damascene Kabakambira, Celestin Hategeka, Cameron Page, Cyprien Ntirenganya, Vincent Dusabejambo, Jules Ndoli, Francois Ngabonziza, DeVon Hale, Claude Bayingana, and Tim Walker

Subjects
H. pylori eradication, Dyspepsia, Clinical trial, Rwanda, Diseases of the digestive system. Gastroenterology, RC799-869
Abstract

Abstract Background Successful H. pylori treatment requires the knowledge of local antimicrobial resistance. Data on the efficacy of H. pylori eradication regimens available in sub-Saharan Africa are scant, hence the optimal treatment is unknown. Our goals were to determine the efficacy of available regimens in Rwanda as well as evaluate the effect of treatment on health-related quality of life (HRQoL) in patients undergoing esophagogastroduodenoscopy. Methods This is a randomized controlled trial conducted from November 2015 to October 2016 at a tertiary hospital in Rwanda. Enrollees were 299 patients (35% male, age 42 ± 16 years (mean ± SD)) who had a positive modified rapid urease test on endoscopic biopsies. After a fecal antigen test (FAT) and HRQoL assessment by the Short Form Nepean Dyspepsia Index (SF-NDI) questionnaire, patients were randomized 1:1:1:1 to either a triple therapy combining omeprazole, amoxicillin and one of clarithromycin/ciprofloxacin/metronidazole or a quadruple therapy combining omeprazole, amoxicillin, ciprofloxacin and doxycycline. All therapies were given for a duration of 10 days. The outcome measures were the persistence of positive FAT (treatment failure) 4 to 6 weeks after treatment and change in HRQoL scores. Results The treatment success rate was 80% in the total population and 78% in patients with a history of prior triple therapy. Significant improvement in HRQoL in the total group (HRQoL mean scores before and after treatment respectively: 76 ± 11 and 32 ± 11, p

Published
2018
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11. An International Collaboration for the Training of Medical Chief Residents in Rwanda

Author

Tim Walker, Vincent Dusabejambo, Janet J. Ho, Claudine Karigire, Bradley Richards, and Andre N. Sofair

Subjects
education, medical, internship and residency, leadership, Infectious and parasitic diseases, RC109-216, Public aspects of medicine, RA1-1270
Abstract

Background: The year-long position of chief medical resident is a time-honored tradition in the United States that serves to provide the trainee with an opportunity to gain further skills as a clinician, leader, teacher, liaison, and administrator. However, in most training programs in the developing world, this role does not exist. Objectives: We sought to develop a collaborative program to train the first medical chief residents for the University of Rwanda and to assess the impact of the new chief residency on residency training, using questionnaires and qualitative interviews with Rwandan faculty, chief residents, and residents. Methods: The educational context and the process leading up to the appointment of Rwandan chief residents, including selection, job description, and necessary training (in the United States and Rwanda), are described. One year after implementation, we used a parallel, mixed methods approach to evaluate the new chief medical resident program through resident surveys as well as semistructured interviews with key informants, including site chief residents, chief residents, and faculty. We also observed chief residents and site chief residents at work and convened focus groups with postgraduate residents to yield additional qualitative information. Results: Rwandan faculty and residents generally felt that the new position had improved the educational and administrative structure of the teaching program while providing a training ground for future academicians. Conclusions: A collaborative training program between developing and developed world academic institutions provides an efficient model for the development of a new chief residency program in the developing world.

Published
2017
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12. Prevalence and sociodemographic determinants of dyspepsia in the general population of Rwanda

Author

John David Chetwood, George Nuki, Michael Jones, Jean Bosco Bangamwabo, Vincent Dusabejambo, Cyprien Ntirenganya, Arcade Nkurunziza, Kelly A Kieffer, and Timothy D Walker

Subjects
Diseases of the digestive system. Gastroenterology, RC799-869
Abstract

Introduction Dyspepsia accounts for a significant burden of worldwide disease, but there is a relative paucity of data from the sub-Saharan African setting. We undertook to describe the burden, risk factors and severity of dyspepsia across Rwanda.Methods We performed a population-based clustered cross-sectional survey between November 2015 and January 2016, nationwide in Rwanda, using the Short Form Leeds Dyspepsia Questionnaire to describe the presence and severity of dyspepsia, and the Short Form Nepean Dyspepsia Index to describe the concomitant quality of life effects. Univariate and multivariate logistic regression models were constructed to correlate measured sociodemographic factors with dyspepsia.Results The prevalence of clinically significant dyspepsia in the general Rwandan population was 14.2% (283/2000). The univariate factors that significantly predicted severity were gender, profession, socioeconomic status, and non-steroidal anti-inflammatory drug, aspirin and alcohol use, with gender, current smoking, aspirin use both in the past and currently, and alcohol use in the past remaining significant on multivariate modelling. Dyspeptics had a significantly lower gastrointestinal-related quality of life, though the sociodemographic factors measured did not modify the observed quality of life.Conclusion Dyspepsia is prevalent in the Rwandan setting and is associated with a significant burden on quality of life. More work is required to determine the pathological entities involved, and the optimal approach to mitigating this burden.

Published
2020
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15. Upper Gastrointestinal Cancers in Rwanda: Epidemiological, Clinical and Histopathological Features in Patients Presenting to a Tertiary Referral Hospital

Author

Felicien Shikama, Steve P. Bensen, Robert Giraneza, Prosper Ndayisaba, Elisée Hategekimana, Eric Rutaganda, Aloys Tuyizere, Tindoho Nkakyekorera, Benoit Seminega, Francois Ngabonziza, Placide Kamali, Vincent Dusabejambo, Dirk J. van Leeuwen, Martin Munyaneza, Frederick L. Makrauer, and Audrey H. Calderwood

Subjects
General Medicine
Published
2022
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16. Abstract 2609: Non-CpG sites preference in G:C>A:T transition of TP53 in gastric cancer of Eastern Europe (Poland, Romania and Hungary) compared to East Asian countries (China and Japan) : gastric cancer in the world, mutation spectrum revisited

Author

Hiroko Natsume, Kinga Szczepaniak, Hidetaka Yamada, Yuji Iwashita, Marta Gędek, Jelena Šuto, Rika Kasajima, Felix Manirakiza, Augustin Nzitakera, Rei Ishikawa, Eric Rutaganda, François Ngabonziza, Benoit Seminega, Placide Kamali, Vincent Dusabejambo, Belson Rugwizangoga, Nobuhito Nobuhito, Yaping Wang, Yohei Miyagi, Simona Gurzu, and Haruhiko Sugimura

Subjects
Cancer Research, Oncology
Abstract

Aim: Mutation spectrum of TP53 in gastric cancer (GC) has been investigated world-widely, but a comparison of mutation spectrum among GCs from various regions in the world are still sparsely documented. In order to identify the difference of TP53 mutation spectrum in GCs in Eastern Europe and in East Asia, we sequenced TP53 in GCs from Eastern Europe, Lujiang (China), and Yokohama, Kanagawa (Japan) and identified the feature of TP53 mutations of GC in these regions. Subjects and Method: In total, 689 tissue samples of GC were analyzed: 288 samples from East European populations (25 from Hungary, 71 from Poland and 192 from Romania), 268 from Yokohama, Kanagawa, Japan and 133 from Lujiang, Anhui province, China. DNA was extracted from FFPE tissue of Chinese, East European cases; and from frozen tissue of Japanese GCs. PCR products were direct-sequenced by Sanger method, and in ambiguous cases, PCR product was cloned and up to 8 clones were sequenced. We used No. NC_000017.11(hg38) as the reference sequence of TP53. Mutation patterns were categorized into nine groups: six base substitutions, insertion, deletion and deletion-insertion. Within G:C>A:T mutations the mutations in CpG and non-CpG sites were divided. Furthermore, 40 cases of Rwanda GC were compared in the world for mutation spectrum. The Cancer Genome Atlas data (TCGA, ver.R20, July, 2019) having somatic mutation list of GCs from Whites, Asians, and other ethnicities were used as a reference for our data. Results: The most frequent base substitutions were G:C>A:T transition in all the areas investigated. The G:C>A:T transition in non-CpG sites were prominent in East European GCs, compared with Asian ones. Mutation pattern from TCGA data revealed the same trend between GCs from White (TCGA category) vs Asian countries. Chinese and Japanese GCs showed higher ratio of G:C>A:T transition in CpG sites and A:T>G:C mutation was more prevalent in Asian countries. Conclusion: The divergence in mutation spectrum of GC in different areas in the world may reflect various pathogeneses and etiologies of GC, region to region. Diversified mutation spectrum in GC in Eastern Europe may suggest GC in Europe has different carcinogenic pathway of those from Asia. Whether the Rwanda pattern belong to Asian or East European would be interesting. Citation Format: Hiroko Natsume, Kinga Szczepaniak, Hidetaka Yamada, Yuji Iwashita, Marta Gędek, Jelena Šuto, Rika Kasajima, Felix Manirakiza, Augustin Nzitakera, Rei Ishikawa, Eric Rutaganda, François Ngabonziza, Benoit Seminega, Placide Kamali, Vincent Dusabejambo, Belson Rugwizangoga, Nobuhito Nobuhito, Yaping Wang, Yohei Miyagi, Simona Gurzu, Haruhiko Sugimura. Non-CpG sites preference in G:C>A:T transition of TP53 in gastric cancer of Eastern Europe (Poland, Romania and Hungary) compared to East Asian countries (China and Japan) : gastric cancer in the world, mutation spectrum revisited [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 2609.

Published
2023
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17. Global multi-stakeholder endorsement of the MAFLD definition

Author

Nahum Méndez-Sánchez, Elisabetta Bugianesi, Robert G Gish, Frank Lammert, Herbert Tilg, Mindie H Nguyen, Shiv K Sarin, Núria Fabrellas, Shira Zelber-Sagi, Jian-Gao Fan, Gamal Shiha, Giovanni Targher, Ming-Hua Zheng, Wah-Kheong Chan, Shlomo Vinker, Takumi Kawaguchi, Laurent Castera, Yusuf Yilmaz, Marko Korenjak, C Wendy Spearman, Mehmet Ungan, Melissa Palmer, Mortada El-Shabrawi, Hans-Juergen Gruss, Jean-François Dufour, Anil Dhawan, Heiner Wedemeyer, Jacob George, Luca Valenti, Yasser Fouad, Manuel Romero‐Gomez, Mohammed Eslam, Maria Lorena Abate, Bahaa Abbas, Ahmed Amr Abbassy, Waleed Abd El Ghany, Amira Abd Elkhalek, Emad Abd ElMajeed, Mohammad Abdalgaber, Mohamed AbdAllah, Marwa Abdallah, Nourhan Abdallah, Shereen Abdelaleem, Yasser Abdelghani, Wael Abdelghany, Safaa Mohamed Abdelhalim, Wafaa Abdelhamid, Nehal Abdelhamid, Nadia A. Abdelkader, Elsayed Abdelkreem, Aly Mohamed Abdelmohsen, Awny Ali Abdelrahman, Sherief M Abd-elsalam, Doaa Abdeltawab, Abdulbaset Abduh, Nada Abdulhakam, Maheeba Abdulla, Navid Abedpoor, Ludovico Abenavoli, Fredrik Åberg, Omala Ablack, Mostafa Abo elftouh, Yousry Esam-Eldin Abo-Amer, Ashraf Aboubkr, Alaa Aboud, Amr M. Abouelnaga, Galal A. Aboufarrag, Ashraf Aboutaleb, Leticia Abundis, Gupse Adalı, Enrique Adames, Leon Adams, Danjuma Adda, Noor Adel, Nada Adel, Muhammad Adel Sayed, Taiba Jibril Afaa, Nawal Afredj, Gulnara Aghayeva, Alessio Aghemo, Carlos A. Aguilar-Salinas, Golo Ahlenstiel, Walid Ahmady, Wafaa Ahmed, Amira Ahmed, Samah Nasser Ahmed, Heba Mostafa Ahmed, Rasha Ahmed, Elmar Aigner, Mesut Akarsu, Maisam Akroush, Umit Akyuz, Mamun Al Mahtab, Tahani Al Qadiri, Yusriya Al Rawahi, Razzaq AL rubaee, Muna Al Saffar, Shahinul Alam, Zaid Al-Ani, Agustín Albillos, Mohamed Alboraie, Said Al-Busafi, Mohamed Al-Emam, Jawaher Alharthi, Kareem Ali, Basma Abdelmoez Ali, Mohammad Ali, Raja Affendi Raja Ali, Anna Alisi, Ali Raad AL-Khafaji, Maryam Alkhatry, Rocio Aller, Yahya Almansoury, Khalid Al-Naamani, Alaa Alnakeeb, Anna Alonso, Saleh A. Alqahtani, Leina Alrabadi, Khalid Alswat, Mahir Altaher, Turki Altamimi, Jose Altamirano, Mario R. Alvares-da-Silva, Elsragy Adel M. Aly, Amgad Alzahaby, Ahmed Alzamzamy, Keisuke Amano, Maysa A. Amer, Mona A. Amin, Sayed A. Amin, Ashraf A. Amir, Javier Ampuero, Noha Anas, Pietro Andreone, Soa Fy Andriamandimby, Mahmoud Anees, Peltec Angela, Manal Antonios, Wael Arafat, Jose Moreno Araya, Juan Armendariz-Borunda, Matthew J. Armstrong, Hassan Ashktorab, Patricia Aspichueta, Fathia Assal, Mira Atef, Dina Attia, Hoda Atwa, Reham Awad, Mohyeldeen Abd Elaziz Awad, Sally Awny, Obafemi Awolowo, Yaw Asante Awuku, Ibrahim Ayada, Than Than Aye, Sherif Ayman, Hedy Ayman, Hesham Ayoub, Hosny M. Azmy, Romiro P. Babaran, Omneya Badreldin, Ahmed Badry, İbrahim Halil Bahçecioğlu, Amira Bahour, Jiajia Bai, Yasemin Balaban, Muthuswamy Balasubramanyam, Khaled Bamakhrama, Jesus M Banales, Babu Bangaru, Jianfeng Bao, Jorge Suazo Barahona, Salma Barakat, Sandra Maria Barbalho, Bikwa Barbra, Beatriz Barranco, Francisco Barrera, Ulrich Baumann, Shamardan Bazeed, Eva Bech, Aourarh Benayad, Andreas Benesic, David Bernstein, Fernando Bessone, Susie Birney, Cyrille Bisseye, Martin Blake, Bilal Bobat, Leonilde Bonfrate, Dmitry S Bordin, Francisco Bosques-Padilla, Jerome Boursier, Boushab Mohamed Boushab, David Bowen, Patricia Medina Bravo, Paul N Brennan, Bisi Bright, Ilse Broekaert, Xabier Buque, Diego Burgos-Santamaría, Julio Burman, Luca Busetto, Chris D. Byrne, Patricia Anne I. Cabral-Prodigalidad, Guillermo Cabrera-Alvarez, Wei Cai, Francesca Cainelli, Ali Riza Caliskan, Ali Canbay, Ana Cano-Contreras, Hai-Xia Cao, Zhujun Cao, Andres Carrion, Francesca Carubbi, Teresa Casanovas, Marlen Ivón Castellanos Fernández, Jin Chai, Siew Pheng Chan, Phunchai Charatcharoenwitthaya, Norberto Chavez-Tapia, Kazuaki Chayama, Jinjun Chen, Lin Chen, Zhong-Wei Chen, Huiting Chen, Sui-Dan Chen, Qiang Chen, Yaxi Chen, Gang Chen, En-Quang Chen, Fei Chen, Pei-Jer Chen, Robert Cheng, Wendy Cheng, Jack Tan Wei Chieh, Imad Chokr, Evangelos Cholongitas, Ashok Choudhury, Abhijit Chowdhury, Evaristus Sunday Chukwudike, Stefano Ciardullo, Michelle Clayton, Karine Clement, Marie Michelle Cloa, Cecilia Coccia, Cristina Collazos, Massimo Colombo, Arif Mansur Cosar, Helma Pinchemel Cotrim, Joris Couillerot, Alioune Coulibaly, Gonzalo Crespo, Javier Crespo, Maria Cruells, Ian Homer Y. Cua, Hesham K. Dabbous, George N Dalekos, Patricia D'Alia, Li Dan, Viet Hang Dao, Mostafa Darwish, Christian Datz, Milagros B Davalos-Moscol, Heba Dawoud, Blanca Olaechea de Careaga, Robert de Knegt, Victor de Ledinghen, Janaka de Silva, Nabil Debzi, Marie Decraecker, Elvira Del Pozo, Teresa C Delgado, Manuel Delgado-Blanco, Łukasz Dembiński, Adilson Depina, Moutaz Derbala, Hailemichael Desalegn, Christèle Desbois-Mouthon, Mahmoud Desoky, Anouk Dev, Agostino Di Ciaula, Moisés Diago, Ibrahima Diallo, Luis Antonio Díaz, Melisa Dirchwolf, Paola Dongiovanni, Andrriy Dorofeyev, Xiaoguang Dou, Mark W. Douglas, Michael Doulberis, Cecil K. Dovia, Adam Doyle, Ivana Dragojević, Joost PH Drenth, Xuefei Duan, Audrius Dulskas, Dan L Dumitrascu, Oliver Duncan, Vincent Dusabejambo, Rev. Shem N.A. Dwawhi, Sho Eiketsu, Doaa El Amrousy, Ahmed El Deeb, Ghada El Deriny, Hesham Salah El Din, Salwa El Kamshishy, Mohamed El Kassas, Maissa El Raziky, Osama A Elagamy, Wafaa Elakel, Dina Elalfy, Hanaa Elaraby, Heba ElAwady, Reda Elbadawy, Hanaa Hassan Eldash, Manal S. Eldefrawy, Carol Lezama Elecharri, Amel Elfaramawy, Mohammed Elfatih, Mahmoud Elfiky, Mohamed Elgamsy, Mohamed Elgendy, Mohamed A. El-Guindi, Nagi Elhussieny, Ahmed Maher Eliwa, Zeineb Elkabbany, Hesham El-Khayat, Nehal M. El-Koofy, Alaa Elmetwalli, Amr Elrabat, Fathiya El-Raey, Fatma Elrashdy, Medhat Elsahhar, Esraa M. Elsaid, Shimaa Elsayed, Hany Elsayed, Aly Elsayed, Amr M. Elsayed, Hamdy Elsayed, Magdy El-Serafy, Ahmed M. Elsharkawy, Reem Yehia Elsheemy, Eman Elsayed Elshemy, Sara Elsherbini, Naglaa Eltoukhy, Reda Elwakil, Ola Emad, Shaimaa Emad, Mohamed Embabi, Ilkay Ergenç, Tatiana Ermolova, Gamal Esmat, Doaa M. Esmat, Enrique Carrera Estupiñan, Said Ettair, Tcaciuc Eugen, Mohammed Ezz-Eldin, Lidia Patricia Valdivieso Falcón, Yu-Chen Fan, Samah Fandari, Mahmoud Farag, Taghreed Mohamed Farahat, Eman M. Fares, Michael Fares, Eduardo Fassio, Hayam Fathy, Dina Fathy, Wael Fathy, Soheir Fayed, Dan Feng, Gong Feng, Miguel Fernández-Bermejo, Cristina Targa Ferreira, Javier Díaz Ferrer, Alastair Forbes, Rabab Fouad, Hanan M. Fouad, Tove Frisch, Hideki Fujii, Shuhei Fukunaga, Shinya Fukunishi, Hacer Fulya, Masato Furuhashi, Yasmine Gaber, Augusto Jose G. Galang, Jacqueline Cordova Gallardo, Rocío Galloso, Mahmoud Gamal, Reham Gamal, Hadeel Gamal, Jian Gan, Anar Ganbold, Xin Gao, George Garas, Tony Garba, Miren García-Cortes, Carmelo García-Monzón, Javier García-Samaniego, Amalia Gastaldelli, Manuel Gatica, Elizabeth Gatley, Tamar Gegeshidze, Bin Geng, Hasmik Ghazinyan, Salma Ghoneem, Luca Giacomelli, Gianluigi Giannelli, Edoardo G. Giannini, Matthew Giefer, Pere Ginès, Marcos Girala, Pablo J Giraudi, George Boon-Bee Goh, Ahmed Ali Gomaa, Benbingdi Gong, Dina Hilda C. Gonzales, Humberto C. Gonzalez, Maria Saraí Gonzalez-Huezo, Isabel Graupera, Ivica Grgurevic, Henning Grønbæk, Xuelian Gu, Lin Guan, Ibrahima Gueye, Alice Nanelin Guingané, Ozen Oz Gul, Cuma Bulent Gul, Qing Guo, Pramendra Prasad Gupta, Ahmet Gurakar, Juan Carlos Restrepo Gutierrez, Ghada Habib, Azaa Hafez, Emilia Hagman, Eman Halawa, Osama Hamdy, Abd Elkhalek Hamed, Dina H. Hamed, Saeed Hamid, Waseem Hamoudi, Yu Han, James Haridy, Hanan Haridy, David C H Harris Harris, Michael Hart, Fuad Hasan, Almoutaz Hashim, Israa Hassan, Ayman Hassan, Essam Ali Hassan, Adel Ahmed Hassan, Magda Shehata Hassan, Fetouh Hassanin, Alshymaa Hassnine, John Willy Haukeland, Amr Ismael M. Hawal, Jinfan He, Qiong He, Yong He, Fang-Ping He, Mona Hegazy, Adham Hegazy, Osama Henegil, Nelia Hernández, Manuel Hernández-Guerra, Fatima Higuera-de-la-Tijera, Ibrahim Hindy, Keisuke Hirota, Lee Chi Ho, Alexander Hodge, Mohamed Hosny, Xin Hou, Jiao-Feng Huang, Yan Huang, Zhifeng Huang, Yuan Huang, Ang Huang, Xiao-Ping Huang, Sheng Hui-ping, Bela Hunyady, Mennatallah A. Hussein, Osama Hussein, Shahinaz Mahmoud Hussien, Luis Ibáñez-Samaniego, Jamal Ibdah, Luqman Ibrahim, Miada Ibrahim, Ibrahim Ibrahim, Maria E. Icaza-Chávez, Sahar Idelbi, Ramazan Idilman Idilman, Mayumi Ikeda, Giuseppe Indolfi, Federica Invernizzi, Iram Irshad, Hasan Mohamed Ali Isa, Natacha Jreige Iskandar, Abdulrahman Ismaiel, Mariam Ismail, Zulkifli Ismail, Faisal Ismail, Hideki Iwamoto, Kathryn Jack, Rachael Jacob, Fuad Jafarov, Wasim Jafri, Helen Jahshan, Prasun K Jalal, Ligita Jancoriene, Martin Janicko, Hiruni Jayasena, Meryem Jefferies, Vivekanand Jha, Fanpu Ji, Yaqiu Ji, Jidong Jia, Changtao Jiang, Ni Jiang, Zong-zhe Jiang, Xing Jin, Yi Jin, Xu Jing, Qian Jingyu, Maia Jinjolava, FX Himawan Haryanto Jong, Alina Jucov, Ibecheole Julius, Mona Kaddah, Yoshihiro Kamada, Abobakr kamal, Enas Mohamed Kamal, Ashraf Sayed Kamel, Jia-Horng Kao, Maja Karin, Thomas Karlas, Mohammad Kashwaa, Leolin Katsidzira, Eda Kaya, M.Azzam Kayasseh, Bernadette Keenan, Caglayan Keklikkiran, William Keml, Deia K. Khalaf, Rofida Khalefa, Sherin Khamis, Doaa Khater, Hamed khattab, Anatoly Khavkin, Olga Khlynova, Nabil Khmis, Nazarii Kobyliak, Apostolos Koffas, Kazuhiko Koike, Kenneth Y.Y. Kok, Tomas Koller, Narcisse Patrice Komas, Nataliya V. Korochanskaya, Yannoula Koulla, Shunji Koya, Colleen Kraft, Bledar Kraja, Marcin Krawczyk, Mohammad Shafi Kuchay, Anand V Kulkarni, Ashish Kumar, Manoj Kumar, Sulaiman Lakoh, Philip Lam, Ling Lan, Naomi F. Lange, Kamran Bagheri Lankarani, Nicolas Lanthier, Kateryna Lapshyna, Sameh A. Lashen, Konang Nguieguia Justine Laure, Leonid Lazebnik, Didier Lebrec, Samuel S. Lee, Way Seah Lee, Yeong Yeh Lee, Diana Julie Leeming, Nathalie Carvalho Leite, Roberto Leon, Cosmas Rinaldi Adithya Lesmana, Junfeng Li, Qiong Li, Jun Li, Yang-Yang Li, Yufang Li, Lei Li, Min Li, Yiling li, Huiqing Liang, Tang Lijuan, Seng Gee Lim, Lee-Ling Lim, Shumei Lin, Han-Chieh Lin, Rita Lin, Rania Lithy, Yaru Liu, Yuanyuan Liu, Xin Liu, Wen-Yue Liu, Shourong Liu, Ken Liu, Tian Liu, Amedeo Lonardo, Mariana Bravo López, Eva López-Benages, Patricio Lopez-Jaramillo, Huimin Lu, Lun Gen Lu, Yan Lu, John Lubel, Rashid Lui, Iulianna Lupasco, Elena Luzina, Xiao-Hui Lv, Kate Lynch, Hong-Lei Ma, Mariana Verdelho Machado, Nonso Maduka, Katerina Madzharova, Russellini Magdaong, Sanjiv Mahadeva, Amel Mahfouz, Nik Ritza Kosai Nik Mahmood, Eman Mahmoud, Mohamed Mahrous, Rakhi Maiwall, Ammar Majeed, Avik Majumdar, Loey Mak, Madiha M Maklouf, Reza Malekzadeh, Claudia Mandato, Alessandra Mangia, Jake Mann, Hala Hussien Mansour, Abdellah Mansouri, Alessandro Mantovani, Jun qian Mao, Flor Maramag, Giulio Marchesini, Claude Marcus, Rui António Rocha Tato Marinho, Maria L Martinez-Chantar, Antonieta A. Soares Martins, Rana Marwan, Karen Frances Mason, Ghadeer Masoud, Mohamed Naguib Massoud, Maria Amalia Matamoros, Rosa Martín Mateos, Asmaa Mawed, Jean Claude Mbanya, Charles Mbendi, Lone McColaugh, Duncan McLeod, Juan Francisco Rivera Medina, Ahmed Megahed, Mai Mehrez, Iqbal Memon, Shahin Merat, Randy Mercado, Ahmed Mesbah, Taoufik Meskini, Mayada Metwally, Rasha Metwaly, Lei Miao, Eileen Micah, Luca Miele, Vladimir Milivojevic, Tamara Milovanovic, Yvonne L. Mina, Milan Mishkovik, Amal Mishriki, Tim Mitchell, Alshaimaa Mohamed, Mona Mohamed, Sofain Mohamed, Shady Mohammed, Ahmed Mohammed, Viswanathan Mohan, Sara Mohie, Aalaa Mokhtar, Reham Moniem, Mabel Segura Montilla, Jose Antonio Orozco Morales, María María Sánchez Morata, Jose Maria Moreno-Planas, Silvia Morise, Sherif Mosaad, Mohamed Moselhy, Alaa Mohamed Mostafa, Ebraheem Mostafa, Nezha Mouane, Nasser Mousa, Hamdy Mahfouz Moustafa, Abeer Msherif, Kate Muller, Christopher Munoz, Ana Beatriz Muñoz-Urribarri, Omar Alfaro Murillo, Feisul Idzwan Mustapha, Emir Muzurović, Yehia Nabil, Shaymaa Nafady, Ayu Nagamatsu, Atsushi Nakajima, Dan Nakano, Yuemin Nan, Fabio Nascimbeni, Mirella S. Naseef, Nagwa Nashat, Taran Natalia, Francesco Negro, Alexander V. Nersesov, Manuela Neuman, Masolwa Ng'wanasayi, Yan Ni, Amanda Nicoll, Takashi Niizeki, Dafina Nikolova, Wang Ningning, Madunil Niriella, K.A Nogoibaeva, Rozeena Nordien, Catherine O Sullivan, James O'Beirne, Solomon Obekpa, Ponsiano Ocama, Missiani Ochwoto, Michael Promise Ogolodom, Olusegun Ojo, Nana Okrostsvaridze, Claudia P. Oliveira, Raul Contreras Omaña, Omneya M. Omar, Hanaa Omar, Mabroka Omar, Salma Omran, Reham Omran, Marian Muse Osman, Nevin Owise, Theobald Owusu-Ansah, P. Martín Padilla- Machaca, Sirish Palle, Ziyan Pan, Xiao-Yan Pan, Qiuwei Pan, Apostolis Papaefthymiou, Feliciano Chanana Paquissi, Gabriella Par, Arit Parkash, Diana Payawal, Kevork M. Peltekian, Xuebin Peng, Liang Peng, Ying Peng, Rahul Pengoria, Martina Perez, José Luis Pérez, Norma Marlene Pérez, Marcello Persico, Mário Guimarães Pessoa, Salvatore Petta, Mathew Philip, Maria Corina Plaz Torres, Naveen Polavarapu, Jaime Poniachik, Piero Portincasa, Chunwen Pu, Tuğrul Pürnak, Edhie Purwanto, Xiaolong Qi, Xingshun Qi, Zibing Qian, Zhao Qiang, Zengpei Qiao, Liang Qiao, Alberto Queiroz, Atoosa Rabiee, Manal Radwan, Alain Marcel Rahetilahy, Yasmin Ramadan, Dina Ramadan, Anis Safura Ramli, Grant A. Ramm, Ao Ran, Ivan Rankovic, Huiying RAO, Sara Raouf, Sayantan Ray, Nancy Reau, Ahmed Refaat, Thomas Reiberger, Jose M Remes-Troche, Eira Cerda Reyes, Ben Richardson, Ezequiel Ridruejo, Sergio Riestra Jimenez, Ibrahim Rizk, Stuart Roberts, Juan Pablo Roblero, Jorge Alberto Prado Robles, Don Rockey, Manuel Rodríguez, Heriberto Rodríguez Hernández, Eva Román, Fernando Gomes Romeiro, Stefano Romeo, Jose Miguel Rosales-Zabal, Georgina R. Roshdi, Natalia Rosso, Andres Ruf, Patricia Cordero Ruiz, Nelia R. Runes, Andrea Ruzzenente, Marno Ryan, Ahmed Saad, Eman BE Sabbagh, Meriam Sabbah, Shimaa Saber, Reham Sabrey, Ramy Sabry, Maysaa Abdallah Saeed, Dina Said, Ebada M Said, Mohammad Amin Sakr, Yara Salah, Rabab Maamoun Salama, Asmaa Salama, Hussein Saleh, Ahmed Saleh, Ahmed Salem, Ahmed Thabet Salem, Alkassoum Salifou, Aso Faeq Salih, Abdallah Salman, Hanen Samouda, Faisal Sanai, Juan Francisco Sánchez-Ávila, Lakshumanan Sanker, Tomoya Sano, Miquel Sanz, Tobokalova Saparbu, Rohit Sawhney, Fatma Sayed, Sayed A. Sayed, Ashraf Othman Sayed, Manar Sayed, Giada Sebastiani, Laura Secadas, Khawaja Qamaruddin Sediqi, Sameh Seif, Nady Semida, Ebubekir Şenateş, Elena Daniela Serban, Lawrence Serfaty, Wai-Kay Seto, Ikram Sghaier, Min Sha, Hamada M. Shabaan, Lobna Shalaby, Inass Shaltout, Ala I. Sharara, Vishal Sharma, Isaac Thom Shawa, Ahmed Shawkat, Nehal Shawky, Osama Shehata, Sinead Sheils, Abate Bane Shewaye, Guojun Shi, Junping Shi, Shigeo Shimose, Tomotake Shirono, Lan Shou, Ananta Shrestha, Guanghou Shui, William Sievert, Solveig Sigurdardottir, Mostafa Mohamed Sira, Riyadh Siradj, Cecilia Sison, Linda Smyth, Reham Soliman, Jose D Sollano, Roger Sombie, Mark Sonderup, Siddharth Sood, German Soriano, Catherine A M Stedman, Oksana Stefanyuk, Davor Štimac, Simone Strasser, Pavel Strnad, Katherine Stuart, Wen Su, Minghua Su, Yoshio Sumida, Shuji Sumie, Dan-Qin Sun, Jing Sun, Hiroyuki Suzuki, Gianluca Svegliati-Baroni, Mohamed Osman Swar, S. TAHARBOUCHT, Zenab Taher, Saori Takamura, Lin Tan, Soek-Siam Tan, Tawesak Tanwandee, Sara Tarek, Ghelimici Tatiana, Federica Tavaglione, Gina Y. Tecson, Hoi-Poh Tee, Rolf Teschke, Mostafa Tharwat, Vo Duy Thong, Mark Thursz, Tulari Tine, Claudio Tiribelli, Ieva Tolmane, Jing Tong, Marco Tongo, Mamdouh Torkie, Aldo Torre, Esther A Torres, Meri Trajkovska, Sombat Treeprasertsuk, Tsubasa Tsutsumi, Thomas Tu, Josep A. Tur, Dilara Turan, Svetlana Turcan, Svetlana Turkina, Engin Tutar, Christian Tzeuton, Rose Ugiagbe, Ahmet Uygun, Michele Vacca, Pietro Vajro, David Van der Poorten, Laurens A. Van Kleef, Eliza Vashakidze, Carlos Moctezuma Velazquez, Mirtha Infante Velazquez, Sandro Vento, Veronique Verhoeven, Umberto Vespasiani-Gentilucci, Shireene Ratna Vethakkan, Josep Vilaseca, Libor Vítek, Ance Volkanovska, Michael Wallace, Wang Wan, Yan Wang, Ying Wang, Xiaolin Wang, Xuemei Wang, Chengyan Wang, Chunjiong Wang, Mingjie Wang, Pelden Wangchuk, Martin Weltman, MaryFrances White, Johannes Wiegand, Mohamed-Naguib Wifi, Alan Wigg, Markus Wilhelmi, Remon William, Henning Wittenburg, Shengjie Wu, Abdu Mohammed Wubeneh, Hongping Xia, Jian Xiao, Xiao Xiao, Wang Xiaofeng, Wanyuan Xiong, Liang Xu, Jie Xu, Weiguo Xu, Jing-Hang Xu, Keshu Xu, Yumin Xu, Shi-Hao Xu, Meng Xu, Aimin Xu, Chengfu Xu, Hongmei Yan, Jingyi Yang, Rui-Xu Yang, Yating Yang, Qinhe Yang, Naibin Yang, Jia Yao, Justine Yara, Serkan Yaraş, Nimet Yılmaz, Ramy Younes, Huda younes, Sona Young, Farah Youssef, Yanyan Yu, Ming-Lung Yu, Jing Yuan, Zhang Yue, Man-Fung Yuen, Wang Yun, Nonka Yurukova, Serag Zakaria, Samy Zaky, Maia Zaldastanishvili, Rodrigo Zapata, Nazanin Zare, Enver Zerem, Nema Zeriban, Xu Zeshuai, Huijie Zhang, Xuemei Zhang, Yupei Zhang, Wen-Hua Zhang, Xuchen Zhang, Yon-ping Zhang, Yuexin Zhang, Zhan-qing Zhang, Jingmin Zhao, Rong-Rong Zhao, Hongwei Zhao, Chao Zheng, Yijie Zheng, Ruidan Zheng, Tian-Lei Zheng, Kenneth Zheng, Xi Qiao Zhou, Yongjian Zhou, Yu-Jie Zhou, Hong Zhou, Ling Zhou, Yongning Zhou, Long dong Zhu, Yong Fen Zhu, Yueyong Zhu, Pei-Wu Zhu, Ebtesam Ziada, David Ziring, Li Ziyi, Shanshan Zou, Zhengsheng Zou, Huaibin Zou, Roberto Zuart Ruiz, UCL - (SLuc) Service de gastro-entérologie, UCL - SSS/IREC/GAEN - Pôle d'Hépato-gastro-entérologie, Mendez-Sanchez, N, Bugianesi, E, Gish, R, Lammert, F, Tilg, H, Nguyen, M, Sarin, S, Fabrellas, N, Zelber-Sagi, S, Fan, J, Shiha, G, Targher, G, Zheng, M, Chan, W, Vinker, S, Kawaguchi, T, Castera, L, Yilmaz, Y, Korenjak, M, Spearman, C, Ungan, M, Palmer, M, El-Shabrawi, M, Gruss, H, Dufour, J, Dhawan, A, Wedemeyer, H, George, J, Valenti, L, Fouad, Y, Romero-Gomez, M, Eslam, M, Abate, M, Abbas, B, Abbassy, A, Abd El Ghany, W, Abd Elkhalek, A, Abd ElMajeed, E, Abdalgaber, M, Abdallah, M, Abdallah, N, Abdelaleem, S, Abdelghani, Y, Abdelghany, W, Abdelhalim, S, Abdelhamid, W, Abdelhamid, N, Abdelkader, N, Abdelkreem, E, Abdelmohsen, A, Abdelrahman, A, Abd-elsalam, S, Abdeltawab, D, Abduh, A, Abdulhakam, N, Abdulla, M, Abedpoor, N, Abenavoli, L, Aberg, F, Ablack, O, Abo elftouh, M, Abo-Amer, Y, Aboubkr, A, Aboud, A, Abouelnaga, A, Aboufarrag, G, Aboutaleb, A, Abundis, L, Adali, G, Adames, E, Adams, L, Adda, D, Adel, N, Adel Sayed, M, Afaa, T, Afredj, N, Aghayeva, G, Aghemo, A, Aguilar-Salinas, C, Ahlenstiel, G, Ahmady, W, Ahmed, W, Ahmed, A, Ahmed, S, Ahmed, H, Ahmed, R, Aigner, E, Akarsu, M, Akroush, M, Akyuz, U, Al Mahtab, M, Al Qadiri, T, Al Rawahi, Y, AL rubaee, R, Al Saffar, M, Alam, S, Al-Ani, Z, Albillos, A, Alboraie, M, Al-Busafi, S, Al-Emam, M, Alharthi, J, Ali, K, Ali, B, Ali, M, Ali, R, Alisi, A, AL-Khafaji, A, Alkhatry, M, Aller, R, Almansoury, Y, Al-Naamani, K, Alnakeeb, A, Alonso, A, Alqahtani, S, Alrabadi, L, Alswat, K, Altaher, M, Altamimi, T, Altamirano, J, Alvares-da-Silva, M, Aly, E, Alzahaby, A, Alzamzamy, A, Amano, K, Amer, M, Amin, M, Amin, S, Amir, A, Ampuero, J, Anas, N, Andreone, P, Andriamandimby, S, Anees, M, Angela, P, Antonios, M, Arafat, W, Araya, J, Armendariz-Borunda, J, Armstrong, M, Ashktorab, H, Aspichueta, P, Assal, F, Atef, M, Attia, D, Atwa, H, Awad, R, Awad, M, Awny, S, Awolowo, O, Awuku, Y, Ayada, I, Aye, T, Ayman, S, Ayman, H, Ayoub, H, Azmy, H, Babaran, R, Badreldin, O, Badry, A, Bahcecioglu, I, Bahour, A, Bai, J, Balaban, Y, Balasubramanyam, M, Bamakhrama, K, Banales, J, Bangaru, B, Bao, J, Barahona, J, Barakat, S, Barbalho, S, Barbra, B, Barranco, B, Barrera, F, Baumann, U, Bazeed, S, Bech, E, Benayad, A, Benesic, A, Bernstein, D, Bessone, F, Birney, S, Bisseye, C, Blake, M, Bobat, B, Bonfrate, L, Bordin, D, Bosques-Padilla, F, Boursier, J, Boushab, B, Bowen, D, Bravo, P, Brennan, P, Bright, B, Broekaert, I, Buque, X, Burgos-Santamaria, D, Burman, J, Busetto, L, Byrne, C, Cabral-Prodigalidad, P, Cabrera-Alvarez, G, Cai, W, Cainelli, F, Caliskan, A, Canbay, A, Cano-Contreras, A, Cao, H, Cao, Z, Carrion, A, Carubbi, F, Casanovas, T, Castellanos Fernandez, M, Chai, J, Chan, S, Charatcharoenwitthaya, P, Chavez-Tapia, N, Chayama, K, Chen, J, Chen, L, Chen, Z, Chen, H, Chen, S, Chen, Q, Chen, Y, Chen, G, Chen, E, Chen, F, Chen, P, Cheng, R, Cheng, W, Chieh, J, Chokr, I, Cholongitas, E, Choudhury, A, Chowdhury, A, Chukwudike, E, Ciardullo, S, Clayton, M, Clement, K, Cloa, M, Coccia, C, Collazos, C, Colombo, M, Cosar, A, Cotrim, H, Couillerot, J, Coulibaly, A, Crespo, G, Crespo, J, Cruells, M, Cua, I, Dabbous, H, Dalekos, G, D'Alia, P, Dan, L, Dao, V, Darwish, M, Datz, C, Davalos-Moscol, M, Dawoud, H, de Careaga, B, de Knegt, R, de Ledinghen, V, de Silva, J, Debzi, N, Decraecker, M, Del Pozo, E, Delgado, T, Delgado-Blanco, M, Dembinski, L, Depina, A, Derbala, M, Desalegn, H, Desbois-Mouthon, C, Desoky, M, Dev, A, Di Ciaula, A, Diago, M, Diallo, I, Diaz, L, Dirchwolf, M, Dongiovanni, P, Dorofeyev, A, Dou, X, Douglas, M, Doulberis, M, Dovia, C, Doyle, A, Dragojevic, I, Drenth, J, Duan, X, Dulskas, A, Dumitrascu, D, Duncan, O, Dusabejambo, V, Dwawhi, R, Eiketsu, S, El Amrousy, D, El Deeb, A, El Deriny, G, El Din, H, El Kamshishy, S, El Kassas, M, El Raziky, M, Elagamy, O, Elakel, W, Elalfy, D, Elaraby, H, Elawady, H, Elbadawy, R, Eldash, H, Eldefrawy, M, Elecharri, C, Elfaramawy, A, Elfatih, M, Elfiky, M, Elgamsy, M, Elgendy, M, El-Guindi, M, Elhussieny, N, Eliwa, A, Elkabbany, Z, El-Khayat, H, El-Koofy, N, Elmetwalli, A, Elrabat, A, El-Raey, F, Elrashdy, F, Elsahhar, M, Elsaid, E, Elsayed, S, Elsayed, H, Elsayed, A, El-Serafy, M, Elsharkawy, A, Elsheemy, R, Elshemy, E, Elsherbini, S, Eltoukhy, N, Elwakil, R, Emad, O, Emad, S, Embabi, M, Ergenc, I, Ermolova, T, Esmat, G, Esmat, D, Estupinan, E, Ettair, S, Eugen, T, Ezz-Eldin, M, Falcon, L, Fan, Y, Fandari, S, Farag, M, Farahat, T, Fares, E, Fares, M, Fassio, E, Fathy, H, Fathy, D, Fathy, W, Fayed, S, Feng, D, Feng, G, Fernandez-Bermejo, M, Ferreira, C, Ferrer, J, Forbes, A, Fouad, R, Fouad, H, Frisch, T, Fujii, H, Fukunaga, S, Fukunishi, S, Fulya, H, Furuhashi, M, Gaber, Y, Galang, A, Gallardo, J, Galloso, R, Gamal, M, Gamal, R, Gamal, H, Gan, J, Ganbold, A, Gao, X, Garas, G, Garba, T, Garcia-Cortes, M, Garcia-Monzon, C, Garcia-Samaniego, J, Gastaldelli, A, Gatica, M, Gatley, E, Gegeshidze, T, Geng, B, Ghazinyan, H, Ghoneem, S, Giacomelli, L, Giannelli, G, Giannini, E, Giefer, M, Gines, P, Girala, M, Giraudi, P, Goh, G, Gomaa, A, Gong, B, Gonzales, D, Gonzalez, H, Gonzalez-Huezo, M, Graupera, I, Grgurevic, I, Gronbaek, H, Gu, X, Guan, L, Gueye, I, Guingane, A, Gul, O, Gul, C, Guo, Q, Gupta, P, Gurakar, A, Gutierrez, J, Habib, G, Hafez, A, Hagman, E, Halawa, E, Hamdy, O, Hamed, A, Hamed, D, Hamid, S, Hamoudi, W, Han, Y, Haridy, J, Haridy, H, Harris, D, Hart, M, Hasan, F, Hashim, A, Hassan, I, Hassan, A, Hassan, E, Hassan, M, Hassanin, F, Hassnine, A, Haukeland, J, Hawal, A, He, J, He, Q, He, Y, He, F, Hegazy, M, Hegazy, A, Henegil, O, Hernandez, N, Hernandez-Guerra, M, Higuera-de-la-Tijera, F, Hindy, I, Hirota, K, Ho, L, Hodge, A, Hosny, M, Hou, X, Huang, J, Huang, Y, Huang, Z, Huang, A, Huang, X, Hui-ping, S, Hunyady, B, Hussein, M, Hussein, O, Hussien, S, Ibanez-Samaniego, L, Ibdah, J, Ibrahim, L, Ibrahim, M, Ibrahim, I, Icaza-Chavez, M, Idelbi, S, Idilman, R, Ikeda, M, Indolfi, G, Invernizzi, F, Irshad, I, Isa, H, Iskandar, N, Ismaiel, A, Ismail, M, Ismail, Z, Ismail, F, Iwamoto, H, Jack, K, Jacob, R, Jafarov, F, Jafri, W, Jahshan, H, Jalal, P, Jancoriene, L, Janicko, M, Jayasena, H, Jefferies, M, Jha, V, Ji, F, Ji, Y, Jia, J, Jiang, C, Jiang, N, Jiang, Z, Jin, X, Jin, Y, Jing, X, Jingyu, Q, Jinjolava, M, Jong, F, Jucov, A, Julius, I, Kaddah, M, Kamada, Y, Kamal, A, Kamal, E, Kamel, A, Kao, J, Karin, M, Karlas, T, Kashwaa, M, Katsidzira, L, Kaya, E, Kayasseh, M, Keenan, B, Keklikkiran, C, Keml, W, Khalaf, D, Khalefa, R, Khamis, S, Khater, D, Khattab, H, Khavkin, A, Khlynova, O, Khmis, N, Kobyliak, N, Koffas, A, Koike, K, Kok, K, Koller, T, Komas, N, Korochanskaya, N, Koulla, Y, Koya, S, Kraft, C, Kraja, B, Krawczyk, M, Kuchay, M, Kulkarni, A, Kumar, A, Kumar, M, Lakoh, S, Lam, P, Lan, L, Lange, N, Lankarani, K, Lanthier, N, Lapshyna, K, Lashen, S, Laure, K, Lazebnik, L, Lebrec, D, Lee, S, Lee, W, Lee, Y, Leeming, D, Leite, N, Leon, R, Lesmana, C, Li, J, Li, Q, Li, Y, Li, L, Li, M, Liang, H, Lijuan, T, Lim, S, Lim, L, Lin, S, Lin, H, Lin, R, Lithy, R, Liu, Y, Liu, X, Liu, W, Liu, S, Liu, K, Liu, T, Lonardo, A, Lopez, M, Lopez-Benages, E, Lopez-Jaramillo, P, Lu, H, Lu, L, Lu, Y, Lubel, J, Lui, R, Lupasco, I, Luzina, E, Lv, X, Lynch, K, Ma, H, Machado, M, Maduka, N, Madzharova, K, Magdaong, R, Mahadeva, S, Mahfouz, A, Mahmood, N, Mahmoud, E, Mahrous, M, Maiwall, R, Majeed, A, Majumdar, A, Mak, L, Maklouf, M, Malekzadeh, R, Mandato, C, Mangia, A, Mann, J, Mansour, H, Mansouri, A, Mantovani, A, Mao, J, Maramag, F, Marchesini, G, Marcus, C, Marinho, R, Martinez-Chantar, M, Martins, A, Marwan, R, Mason, K, Masoud, G, Massoud, M, Matamoros, M, Mateos, R, Mawed, A, Mbanya, J, Mbendi, C, Mccolaugh, L, Mcleod, D, Medina, J, Megahed, A, Mehrez, M, Memon, I, Merat, S, Mercado, R, Mesbah, A, Meskini, T, Metwally, M, Metwaly, R, Miao, L, Micah, E, Miele, L, Milivojevic, V, Milovanovic, T, Mina, Y, Mishkovik, M, Mishriki, A, Mitchell, T, Mohamed, A, Mohamed, M, Mohamed, S, Mohammed, S, Mohammed, A, Mohan, V, Mohie, S, Mokhtar, A, Moniem, R, Montilla, M, Morales, J, Morata, M, Moreno-Planas, J, Morise, S, Mosaad, S, Moselhy, M, Mostafa, A, Mostafa, E, Mouane, N, Mousa, N, Moustafa, H, Msherif, A, Muller, K, Munoz, C, Munoz-Urribarri, A, Murillo, O, Mustapha, F, Muzurovic, E, Nabil, Y, Nafady, S, Nagamatsu, A, Nakajima, A, Nakano, D, Nan, Y, Nascimbeni, F, Naseef, M, Nashat, N, Natalia, T, Negro, F, Nersesov, A, Neuman, M, Ng'Wanasayi, M, Ni, Y, Nicoll, A, Niizeki, T, Nikolova, D, Ningning, W, Niriella, M, Nogoibaeva, K, Nordien, R, O Sullivan, C, O'Beirne, J, Obekpa, S, Ocama, P, Ochwoto, M, Ogolodom, M, Ojo, O, Okrostsvaridze, N, Oliveira, C, Omana, R, Omar, O, Omar, H, Omar, M, Omran, S, Omran, R, Osman, M, Owise, N, Owusu-Ansah, T, Padilla- Machaca, P, Palle, S, Pan, Z, Pan, X, Pan, Q, Papaefthymiou, A, Paquissi, F, Par, G, Parkash, A, Payawal, D, Peltekian, K, Peng, X, Peng, L, Peng, Y, Pengoria, R, Perez, M, Perez, J, Perez, N, Persico, M, Pessoa, M, Petta, S, Philip, M, Plaz Torres, M, Polavarapu, N, Poniachik, J, Portincasa, P, Pu, C, Purnak, T, Purwanto, E, Qi, X, Qian, Z, Qiang, Z, Qiao, Z, Qiao, L, Queiroz, A, Rabiee, A, Radwan, M, Rahetilahy, A, Ramadan, Y, Ramadan, D, Ramli, A, Ramm, G, Ran, A, Rankovic, I, Rao, H, Raouf, S, Ray, S, Reau, N, Refaat, A, Reiberger, T, Remes-Troche, J, Reyes, E, Richardson, B, Ridruejo, E, Riestra Jimenez, S, Rizk, I, Roberts, S, Roblero, J, Robles, J, Rockey, D, Rodriguez, M, Rodriguez Hernandez, H, Roman, E, Romeiro, F, Romeo, S, Rosales-Zabal, J, Roshdi, G, Rosso, N, Ruf, A, Ruiz, P, Runes, N, Ruzzenente, A, Ryan, M, Saad, A, Sabbagh, E, Sabbah, M, Saber, S, Sabrey, R, Sabry, R, Saeed, M, Said, D, Said, E, Sakr, M, Salah, Y, Salama, R, Salama, A, Saleh, H, Saleh, A, Salem, A, Salifou, A, Salih, A, Salman, A, Samouda, H, Sanai, F, Sanchez-Avila, J, Sanker, L, Sano, T, Sanz, M, Saparbu, T, Sawhney, R, Sayed, F, Sayed, S, Sayed, A, Sayed, M, Sebastiani, G, Secadas, L, Sediqi, K, Seif, S, Semida, N, Senates, E, Serban, E, Serfaty, L, Seto, W, Sghaier, I, Sha, M, Shabaan, H, Shalaby, L, Shaltout, I, Sharara, A, Sharma, V, Shawa, I, Shawkat, A, Shawky, N, Shehata, O, Sheils, S, Shewaye, A, Shi, G, Shi, J, Shimose, S, Shirono, T, Shou, L, Shrestha, A, Shui, G, Sievert, W, Sigurdardottir, S, Sira, M, Siradj, R, Sison, C, Smyth, L, Soliman, R, Sollano, J, Sombie, R, Sonderup, M, Sood, S, Soriano, G, Stedman, C, Stefanyuk, O, Stimac, D, Strasser, S, Strnad, P, Stuart, K, Su, W, Su, M, Sumida, Y, Sumie, S, Sun, D, Sun, J, Suzuki, H, Svegliati-Baroni, G, Swar, M, Taharboucht, S, Taher, Z, Takamura, S, Tan, L, Tan, S, Tanwandee, T, Tarek, S, Tatiana, G, Tavaglione, F, Tecson, G, Tee, H, Teschke, R, Tharwat, M, Thong, V, Thursz, M, Tine, T, Tiribelli, C, Tolmane, I, Tong, J, Tongo, M, Torkie, M, Torre, A, Torres, E, Trajkovska, M, Treeprasertsuk, S, Tsutsumi, T, Tu, T, Tur, J, Turan, D, Turcan, S, Turkina, S, Tutar, E, Tzeuton, C, Ugiagbe, R, Uygun, A, Vacca, M, Vajro, P, Van der Poorten, D, Van Kleef, L, Vashakidze, E, Velazquez, C, Velazquez, M, Vento, S, Verhoeven, V, Vespasiani-Gentilucci, U, Vethakkan, S, Vilaseca, J, Vitek, L, Volkanovska, A, Wallace, M, Wan, W, Wang, Y, Wang, X, Wang, C, Wang, M, Wangchuk, P, Weltman, M, White, M, Wiegand, J, Wifi, M, Wigg, A, Wilhelmi, M, William, R, Wittenburg, H, Wu, S, Wubeneh, A, Xia, H, Xiao, J, Xiao, X, Xiaofeng, W, Xiong, W, Xu, L, Xu, J, Xu, W, Xu, K, Xu, Y, Xu, S, Xu, M, Xu, A, Xu, C, Yan, H, Yang, J, Yang, R, Yang, Y, Yang, Q, Yang, N, Yao, J, Yara, J, Yaras, S, Yilmaz, N, Younes, R, Younes, H, Young, S, Youssef, F, Yu, Y, Yu, M, Yuan, J, Yue, Z, Yuen, M, Yun, W, Yurukova, N, Zakaria, S, Zaky, S, Zaldastanishvili, M, Zapata, R, Zare, N, Zerem, E, Zeriban, N, Zeshuai, X, Zhang, H, Zhang, X, Zhang, Y, Zhang, W, Zhang, Z, Zhao, J, Zhao, R, Zhao, H, Zheng, C, Zheng, Y, Zheng, R, Zheng, T, Zheng, K, Zhou, X, Zhou, Y, Zhou, H, Zhou, L, Zhu, L, Zhu, Y, Zhu, P, Ziada, E, Ziring, D, Ziyi, L, Zou, S, Zou, Z, Zou, H, Zuart Ruiz, R, and Global Multi-Stakeholder Consensus on the Redefinition of Fatty Liver Disease

Subjects
Renal disorders Radboud Institute for Molecular Life Sciences [Radboudumc 11], Hepatology, Non-alcoholic Fatty Liver Disease, NAFLD, consensu, Gastroenterology, MAFLD, definition, Humans, MAFLD, NAFLD, Human medicine
Abstract

Contains fulltext : 252162.pdf (Publisher’s version ) (Closed access)

Published
2022
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19. Prevalence of Strongyloides stercoralis infection and other soil-transmitted helminths by cross-sectional survey in a rural community in Gisagara District, Southern Province, Rwanda

Author

Tim Walker, Alphonse Ndayambaje, Aloys Tuyizere, Devon C. Hale, Claude Bayingana, Cyprien Ntirenganya, and Vincent Dusabejambo

Subjects
Adult, Male, Rural Population, 0301 basic medicine, medicine.medical_specialty, Epidemiology, Cross-sectional study, 030231 tropical medicine, 030106 microbiology, Population, Strongyloides stercoralis, Feces, Soil, Young Adult, 03 medical and health sciences, 0302 clinical medicine, Helminths, Strongyloides, Prevalence, medicine, Animals, Humans, Seroprevalence, education, Aged, education.field_of_study, biology, business.industry, Public health, Rwanda, Public Health, Environmental and Occupational Health, Original Articles, General Medicine, Middle Aged, biology.organism_classification, Neglected diseases, Cross-Sectional Studies, Infectious Diseases, Strongyloidiasis, Neglected tropical diseases, Female, Parasitology, Public Health, Rural area, business, Demography
Abstract

Background Strongyloides stercoralis is one of the most neglected tropical diseases. Sparse, dated central African and Rwandan data on seroprevalence are available to guide public health efforts and clinical care. Methods In February 2016 we conducted a community-based cross-sectional study among 539 asymptomatic participants in a rural area in the Gisagara District, Southern Province, Rwanda. Direct faecal smear (DFS) and modified Koga agar plate culture (APC) were used to detect S. stercoralis infection in a single stool sample. Data on other soil-transmitted helminths diagnosed by DFS were also recorded. Results Four intestinal helminth infections were diagnosed, with S. stercoralis (17.4%) and hookworms (8.2%) seen most often. APC, compared with DFS, increased the diagnosis rate for S. stercoralis from 1.9% to 17.4% (p

Published
2018
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20. Simplified Mathematical Model of Glucose-Insulin System

Author

Wellars Banzi, Lydie Mpinganzima, Froduald Minani, Vincent Dusabejambo, Japhet Niyobuhungiro, Jean Bosco Gahutu, Immaculate Kambutse, Eric Rutaganda, and Jean Marie Ntaganda

Subjects
0301 basic medicine, Tissue compartment, Computer science, 030209 endocrinology & metabolism, General Medicine, Inverse problem, Optimal control, Global model, Diabetes mellitus type i, 03 medical and health sciences, Identification (information), 030104 developmental biology, 0302 clinical medicine, Model parameter, Ordinary differential equation, Applied mathematics
Abstract

Mathematical modelling of glucose-insulin system is very important in medicine as a necessary tool to understand the homeostatic control of human body. It can also be used to design clinical trials and in the evaluation of the diabetes prevention. In the last three decades so much work has been done in this direction. One of the most notable models is the global six compartment-mathematical model with 22 ordinary differential equations due to John Thomas Sorensen. This paper proposes a more simplified three compartment-mathematical model with only 6 ordinary differential equations by introducing a tissue compartment comprising kidney, gut, brain and periphery. For model parameter identification, we use inverse problems technique to solve a specific optimal control problem where data are obtained by solving the global model of John Thomas Sorensen. Numerical results show that the proposed model is adaptable to data and can be used to adjust diabetes mellitus type I or type II for diabetic patients.

Published
2018
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21. Clinical Profile and Outcome of Patients with Acute Kidney Injury Requiring Hemodialysis: Two Years’ Experience at a Tertiary Hospital in Rwanda

Author

Menelas Nkeshimana, Onyema Ogbuagu, Vincent Dusabejambo, Grace Igiraneza, and Benedicte Ndayishimiye

Subjects
Adult, Male, medicine.medical_specialty, Article Subject, medicine.medical_treatment, 030232 urology & nephrology, lcsh:Medicine, Comorbidity, 030204 cardiovascular system & hematology, Single Center, General Biochemistry, Genetics and Molecular Biology, Cohort Studies, Tertiary Care Centers, 03 medical and health sciences, 0302 clinical medicine, Renal Dialysis, Sepsis, Internal medicine, medicine, Humans, Renal replacement therapy, Retrospective Studies, General Immunology and Microbiology, business.industry, lcsh:R, Rwanda, Acute kidney injury, Retrospective cohort study, General Medicine, Acute Kidney Injury, Middle Aged, medicine.disease, Treatment Outcome, Cohort, Female, Hemodialysis, business, Research Article, Cohort study
Abstract

Introduction. Acute kidney injury (AKI) requiring renal replacement therapy is associated with high mortality. The study assessed the impact of the introduction of hemodialysis (HD) on outcomes of patients with AKI in Rwanda. Methods. A single center retrospective study that evaluated the clinical profile and survival outcomes of patients with AKI requiring HD [AKI-D] at a tertiary hospital in Rwanda. Data was collected on patients who received HD for AKI from September 2014 to December 2016. Patient demographics, comorbidities, clinical presentation, laboratory tests, and mortality were reviewed and analyzed. Predictors of mortality were assessed using age and gender adjusted multivariate analyses. Results. Of the 82 eligible patients, median age was 38 years (IQR 28–57 years). Males comprised 51% of the cohort. Infectious diseases including malaria, pneumonia, and sepsis (35.1%) and pregnancy-related conditions (26.9%) were the most frequent comorbidities. Pulmonary oedema (54.9%) and uremic encephalopathy (50%) were top indications for HD. Mortality was 34.1%. On multivariate analysis, receipt of P=0.026) and hyperkalemia (OR = 3.23, 95% CI 1.040–10.065, P=0.043) were associated with mortality. Conclusion. The availability of acute hemodialysis in Rwanda has resulted in improved patient survival and persistent hyperkalemia predicted higher mortality.

Published
2018
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22. Effects of a lifestyle education program on glycemic control among patients with diabetes at Kigali University Hospital, Rwanda: A randomized controlled trial

Author

Donatille Mukantagwabira, Joseph Uwiragiye, Etienne Amendezo, Jeanne Bisimwa, Patrick Kavabushi, Henriette Umulisa, Bernard Ndayambaje, B. H. Robinson, Vincent Karamuka, Scholastique Niyomwungeri, Vincent Dusabejambo, Cyprien Ntirenganya, Charlotte Bavuma, Henriette Uwintwali Marie, and David Walker Timothy

Subjects
Adult, Blood Glucose, Counseling, Male, medicine.medical_specialty, Endocrinology, Diabetes and Metabolism, 030209 endocrinology & metabolism, law.invention, Hospitals, University, 03 medical and health sciences, chemistry.chemical_compound, 0302 clinical medicine, Endocrinology, Patient Education as Topic, Randomized controlled trial, law, Intervention (counseling), Diabetes mellitus, Internal Medicine, medicine, Humans, Healthy Lifestyle, 030212 general & internal medicine, Aged, Glycemic, Glycated Hemoglobin, Adult patients, business.industry, Rwanda, General Medicine, Middle Aged, medicine.disease, University hospital, Test (assessment), Diabetes Mellitus, Type 2, chemistry, Physical therapy, Female, Glycated hemoglobin, business
Abstract

Evidence to show whether lifestyle intervention programs are beneficial for patients with diabetes in resource-limited countries is lacking. The present study assessed the additional efficacy of a structured lifestyle education program, as compared to the current standard of diabetic care in Rwanda.251 consecutive adult patients attending a tertiary diabetic care practice were randomly assigned to either an intervention group (standard of care plus monthly lifestyle group education sessions of 45min duration) or to a control group. The primary outcome was between-groups difference in glycated hemoglobin (HbA1c) observed after 12-months follow up. Outcome measures in the intervention and control groups were compared using the ANCOVA test with a two-sided significance of 5%.Of the 251 subjects recruited, 223 were included in the analysis; of whom 115 were assigned to the intervention group, and 108 to the control group. After 12-months, the median HbA1c levels reduced by 1.70 (95% CI: -2.09 to -1.31; p0.001) in the intervention group; and by 0.52 (95% CI: -0.95 to -0.10; p=0.01) in the control group. The difference in HbA1c reduction between the intervention and control groups was statistically significant (p0.001) after adjustment for subjects' age, sex, education level, BMI, diabetes duration and diabetic medications.This study demonstrated that a structured lifestyle group education program for people with diabetes is an attractive option in a resource-limited setting, as it showed significant benefits in improved glycemic control over a 12-month period.ClinicalTrials.gov: NCT02032108.

Published
2017
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23. Reply

Author

Tim Walker, Frederick L. Makrauer, and Vincent Dusabejambo

Subjects
Carr, Hepatology, Political science, Gastroenterology, Global health, Public administration, Global Health, Article
Published
2020
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24. Use of adenosine deaminase (ADA) to diagnose suspected peritoneal tuberculosis in Rwanda: a cross-sectional study

Author

Cameron Page, Jules Ntwari, and Vincent Dusabejambo

Subjects
0301 basic medicine, Adult, Male, medicine.medical_specialty, Tuberculosis, Referral, Cross-sectional study, Adenosine Deaminase, 030106 microbiology, Peritonitis, Tuberculous, Disease, lcsh:Infectious and parasitic diseases, 03 medical and health sciences, 0302 clinical medicine, Medical microbiology, Adenosine deaminase, Internal medicine, Ascites, medicine, Prevalence, Ascitic Fluid, Humans, lcsh:RC109-216, Developing Countries, Infectious disease, biology, business.industry, Rwanda, Mycobacterium tuberculosis, Clinical Enzyme Tests, Middle Aged, medicine.disease, Infectious Diseases, Cross-Sectional Studies, Infectious disease (medical specialty), biology.protein, 030211 gastroenterology & hepatology, Female, medicine.symptom, Peritoneum, business, Research Article
Abstract

Background Peritoneal tuberculosis is the most common cause of low albumin gradient ascites in developing countries, but it can be easily confused with other causes of ascites. Peritoneal tuberculosis requires early recognition of symptoms and signs in order to make a quick diagnosis for appropriate treatment. Measurement of adenosine deaminase (ADA) level > 39 in ascites fluid is an established test to diagnose peritoneal tuberculosis. Many low-income countries do not currently test for adenosine deaminase in ascites fluid, including Rwanda. Method Cross-sectional, descriptive study conducted through the Internal Medicine Department of three university teaching hospitals in Rwanda. Participants were patients older than 16 years presenting to tertiary referral hospitals with ascites of unknown cause. Results Of 103 ascites fluid samples collected, 52 of them (50.5%) had an elevated ADA, consistent with a presumptive diagnosis of peritoneal TB. Among those 52 subjects diagnosed with peritoneal TB, 39 out of 52 (75%) did not receive anti-TB medications. Among the 17 subjects who were treated with anti-TB medications, 4 of 17 (23.6%) did not have peritoneal TB based on ADA level. Samples with low-albumin gradient ascites were more likely to have high ADA ≥39 IU/L (p = 0.039). Conclusion Our findings suggest that 3out of 4 patients with PTB in Rwanda are not getting TB treatment and 1 in 4 patients who are taking TB medications do not need it. Even if the true number of Rwandans who are being undertreated and overtreated is less than our study suggests, these results should prompt a larger study of peritoneal tuberculosis. Adding adenosine deaminase (ADA) to the diagnostic tools available to clinicians could help achieve the goal of correctly putting every Rwandan with tuberculosis on treatment, while avoiding unnecessary tuberculosis medications in those who do not have the disease.

Published
2020

25. Challenges in the Recognition and Management of Acute Kidney Injury by Hospitals in Resource-Limited Settings

Author

Asghar Rastegar, Grace Igiraneza, Vincent Dusabejambo, and Fredric O. Finklestein

Subjects
medicine.medical_specialty, Multivariate analysis, medicine.medical_treatment, 030232 urology & nephrology, Medical equipment, resource-limited setting, 030204 cardiovascular system & hematology, lcsh:RC870-923, Peritoneal dialysis, 03 medical and health sciences, 0302 clinical medicine, Health care, Medicine, therapeutic options, business.industry, Acute kidney injury, lcsh:Diseases of the genitourinary system. Urology, medicine.disease, Checklist, acute kidney injury, Nephrology, Emergency medicine, Commentary, Hemodialysis, business, diagnostic capacity, Kidney disease
Abstract

Introduction Acute kidney injury (AKI) is prevalent in low- and middle-income countries (LMIC) and is associated with significant morbidity and mortality, particularly among hospitalized patients. Successful strategies for the prevention and management of AKI in these countries are dependent on the capacity of primary care centers to provide optimal initial management of patients at risk for this disorder. Methods From December 2018 to February 2019, using mixed methods, we assessed hospital capacity and the knowledge of clinicians relevant to the prevention, diagnosis, and management of AKI in Rwanda. A checklist based on Kidney Disease: Improving Global Outcomes (KDIGO) guidelines and clinical vignette-based assessment tool were used to assess hospital capacity and provider knowledge base, respectively. Data were analyzed using stata 13 with findings reported as simple frequencies or means with standard deviation. Multivariate analysis was used to assess factors associated with a higher knowledge score among clinicians. Results Ten hospitals and 193 health care providers from sites throughout Rwanda participated in the survey. Surveyed hospitals were equipped with basic general medical equipment but were deficient in diagnostic tools and medical supplies that would allow the diagnosis and nondialytic management of AKI. Although 20% of the hospitals could offer hemodialysis services, peritoneal dialysis services were nonexistent. With regard to knowledge base, the health care providers demonstrated significant deficiencies in the diagnosis and management of AKI. The mean knowledge score for all health providers was 6.3 (±1.5) of a maximum of 11, with a mean (±SD) score for doctors, nurses, and midwives of 6.3 ± 2.05, 6.4 ± 1.3, and 6.08 ± 1.2, respectively. On multivariate analysis, the length of clinical experience and age of the respondents were significantly associated with participants’ knowledge score. Conclusion This study documents significant barriers to providing optimal management of AKI in primary health care settings in Rwanda, a resource-limited setting. These include lack of specialized medical personnel, significant knowledge gaps among primary health care providers, suboptimal diagnostic capacity, and limited treatment options for detection and management of AKI.

Published
2019

26. Abstract 41: International Collaborative Rwanda Endoscopy Week Conferences Demonstrate Feasibility and identify H. pylori Testing as an Important Target for Capacity-Building Interventions

Author

Eric Rutaganda, Felcien Shikama, Mary D. Chamberlin, Steve P. Bensen, Nikitha Gangasani, and Vincent Dusabejambo

Subjects
medicine.medical_specialty, education.field_of_study, medicine.diagnostic_test, biology, Epidemiology, business.industry, General surgery, Population, Psychological intervention, Cancer, Helicobacter pylori, medicine.disease, Malignancy, biology.organism_classification, Endoscopy, Oncology, Acquired immunodeficiency syndrome (AIDS), medicine, Risk factor, business, education
Abstract

Purpose: Gastrointestinal (GI) endoscopy is a growing field in Rwanda, a country of 12.6 million with significant GI morbidity and mortality. Endoscopy alongside Helicobacter pylori identification and eradication aids in GI cancer prevention and diagnosis in this population. Our collaborative training-focused endoscopy conference provides preliminary data to focus future training and capacity building programs in Rwanda to improve oncologic outcomes. Methods: Since 2017, ‘Rwanda Endoscopy Week' (REW) is held annually at multiple hospitals throughout Rwanda. It consists of several days of didactic training in endoscopy, oncology and research, followed by a week of endoscopy procedures performed jointly by visiting and hosting endoscopists, and ending with a summary of results of didactic and endoscopic activity. Results: Four (4) hospitals performed 244 training endoscopies in 2017 and 448 cases in 2018. In 2019 this expanded to 668 endoscopies performed at 7 hospitals, including academic, district, and private hospitals. The case distribution remained similar over 3 years at 86.0% (1170/1360) upper endoscopies, 13.2% (180/1360) colonoscopies, and 0.7% (10/1360) endoscopic retrograde cholangiopancreatographies. Thirty-nine (5.8%, 39/668) patients had a tumor finding suspicious for gastric (4.0%, 27/668), colorectal (1.5%,10/668), ampullary (0.1%, 1/668), or gallbladder (0.1%, 1/668) malignancy. 54% of patients receiving endoscopy were tested for H. Pylori (367/669); 38% of those tested had inconclusive results (141/367) and 20% were positive (74). There were 2 non-serious bleeding events. Conclusions: Participation by Rwandan urban, district, public and private hospitals in a cooperative international GI training conference has experienced a nearly three-fold increase in patients and identified malignant pathology while maintaining safe endoscopic care over a three-year period. H. pylori, ubiquitous in this population, is an important risk factor for gastric cancer and gastric diseases. Necessary next steps include increased training and capacity-building interventions to improve the quality of the testing and surveillance of those treated. Citation Format: Nikitha Gangasani, Eric Rutaganda, Felcien Shikama, Steve Bensen, Vincent Dusabejambo, Mary Chamberlin. International Collaborative Rwanda Endoscopy Week Conferences Demonstrate Feasibility and identify H. pylori Testing as an Important Target for Capacity-Building Interventions [abstract]. In: Proceedings of the 9th Annual Symposium on Global Cancer Research; Global Cancer Research and Control: Looking Back and Charting a Path Forward; 2021 Mar 10-11. Philadelphia (PA): AACR; Cancer Epidemiol Biomarkers Prev 2021;30(7 Suppl):Abstract nr 41.

Published
2021
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27. Health Professional Training and Capacity Strengthening Through International Academic Partnerships: The First Five Years of the Human Resources for Health Program in Rwanda

Author

Bethany Hedt-Gauthier, Juliet Musabeyezu, Agnes Gatarayiha, Jean Claude Kabayiza, Paul Palumbo, Marcel E. Durieux, Robert Riviello, Ira C. Magaziner, Valli Meeks, Donatilla Mukamana, Peter Okwi, Louise Kalisa, Joseph Shema, Linda Arnold, Danny A. Milner, Phil Cotton, Lydie Mukashyaka, Adam C. Levine, Jennifer E. O’flaherty, Esperance Ndenga, Belson Rugwizangoga, Urania Magriples, Vincent Dusabejambo, Mary Hill, Rodney L. Wright, Linda L. McCreary, Alex Butera, Joseph Rhatigan, Kaitesi Batamuliza Mukara, Lisa V. Adams, Tanya Rogo, Nathan M. Thielman, Craig D. McClain, Jeanne Kagwiza, David Tumusiime, Rachel T Moresky, Chrispinus H. Mumena, Deborah Chyun, Jeffrey Dixson, Madeleine Mukeshimana, Simon Kanyandekwe, Giuseppe Raviola, Michael V. Relf, Faustin Ntirenganya, Tej Nuthulaganti, Forrest J. Calland, Lisa Bazzett-Matabele, Corrado Cancedda, Jane Barrow, Michael Koster, Kim Wilson, Stacy E. Smith, Asghar Rastegar, Tonda L. Hughes, Natalie McCall, Egide Kayonga Ntagungira, Emmy Nkusi, Amy Bunts, Anne Sliney, Agnes Binagwaho, Mark H. Corden, Cynthia Binanay, Theogene Twagirumugabe, Beth Barrows, Tim Walker, Robin Toft Klar, Meenu Tuteja, Paul Farmer, Rex Wong, Rebecca Reece, Attila Yaman, Meredith Kernan, Stephen Rulisa, Patrick Kyamanywa, Rashna Ginwalla, and Marik Moen

Subjects
medicine.medical_specialty, Health (social science), Capacity Building, Financial Management, Leadership and Management, Health Personnel, International Cooperation, Management, Monitoring, Policy and Law, 03 medical and health sciences, 0302 clinical medicine, Health Information Management, Political science, Health care, Correspondence, medicine, Academic Partnerships, Humans, 030212 general & internal medicine, Health Workforce, Human resources, Human Resource for Health, Students, Curriculum, Developing Countries, Government, Medical education, Organizations, Schools, business.industry, Health Policy, Public health, lcsh:Public aspects of medicine, Rwanda, lcsh:RA1-1270, Health Professional Training, Faculty, United States, Government Programs, Health promotion, 030220 oncology & carcinogenesis, Workforce, Sustainability, Strengthening, Original Article, Institutional Capacity, business
Abstract

Background The Rwanda Human Resources for Health Program (HRH Program) is a 7-year (2012-2019) health professional training initiative led by the Government of Rwanda with the goals of training a large, diverse, and competent health workforce and strengthening the capacity of academic institutions in Rwanda. Methods The data for this organizational case study was collected through official reports from the Rwanda Ministry of Health (MoH) and 22 participating US academic institutions, databases from the MoH and the College of Medicine and Health Sciences (CMHS) in Rwanda, and surveys completed by the co-authors. Results In the first 5 years of the HRH Program, a consortium of US academic institutions has deployed an average of 99 visiting faculty per year to support 22 training programs, which are on track to graduate almost 4600 students by 2019. The HRH Program has also built capacity within the CMHS by promoting the recruitment of Rwandan faculty and the establishment of additional partnerships and collaborations with the US academic institutions. Conclusion The milestones achieved by the HRH Program have been substantial although some challenges persist. These challenges include adequately supporting the visiting faculty; pairing them with Rwandan faculty (twinning); ensuring strong communication and coordination among stakeholders; addressing mismatches in priorities between donors and implementers; the execution of a sustainability strategy; and the decision by one of the donors not to renew funding beyond March 2017. Over the next 2 academic years, it is critical for the sustainability of the 22 training programs supported by the HRH Program that the health-related Schools at the CMHS significantly scale up recruitment of new Rwandan faculty. The HRH Program can serve as a model for other training initiatives implemented in countries affected by a severe shortage of health professionals.

Published
2018

28. Efficacy of Helicobacter pylori eradication regimens in Rwanda: a randomized controlled trial

Author

Vincent Dusabejambo, Jules Ndoli, Celestin Hategeka, Cameron Page, Claude Bayingana, Jean Damascene Kabakambira, Tim Walker, Francois Ngabonziza, Devon C. Hale, and Cyprien Ntirenganya

Subjects
Adult, Male, medicine.medical_specialty, Rapid urease test, Helicobacter Infections, law.invention, 03 medical and health sciences, 0302 clinical medicine, Randomized controlled trial, Quality of life, Ciprofloxacin, law, Clarithromycin, Metronidazole, Internal medicine, medicine, Humans, Treatment Failure, 030212 general & internal medicine, Disease Eradication, Dyspepsia, lcsh:RC799-869, Omeprazole, Helicobacter pylori, biology, business.industry, Gastroenterology, Rwanda, Amoxicillin, General Medicine, Middle Aged, biology.organism_classification, Anti-Bacterial Agents, Clinical trial, Doxycycline, H. pylori eradication, Quality of Life, Drug Therapy, Combination, Female, 030211 gastroenterology & hepatology, lcsh:Diseases of the digestive system. Gastroenterology, business, Research Article, medicine.drug
Abstract

Background: Successful H. pylori treatment requires the knowledge of local antimicrobial resistance. Data on the efficacy of H. pylori eradication regimens available in sub-Saharan Africa are scant, hence the optimal treatment is unknown. Our goals were to determine the efficacy of available regimens in Rwanda as well as evaluate the effect of treatment on health-related quality of life (HRQoL) in patients undergoing esophagogastroduodenoscopy. Methods: This is a randomized controlled trial conducted from November 2015 to October 2016 at a tertiary hospital in Rwanda. Enrollees were 299 patients (35% male, age 42 ± 16 years (mean ± SD)) who had a positive modified rapid urease test on endoscopic biopsies. After a fecal antigen test (FAT) and HRQoL assessment by the Short Form Nepean Dyspepsia Index (SF-NDI) questionnaire, patients were randomized 1:1:1:1 to either a triple therapy combining omeprazole, amoxicillin and one of clarithromycin/ciprofloxacin/metronidazole or a quadruple therapy combining omeprazole, amoxicillin, ciprofloxacin and doxycycline. All therapies were given for a duration of 10 days. The outcome measures were the persistence of positive FAT (treatment failure) 4 to 6 weeks after treatment and change in HRQoL scores. Results: The treatment success rate was 80% in the total population and 78% in patients with a history of prior triple therapy. Significant improvement in HRQoL in the total group (HRQoL mean scores before and after treatment respectively: 76 ± 11 and 32 ± 11, p

Published
2018
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29. An International Collaboration for the Training of Medical Chief Residents in Rwanda

Author

Bradley Richards, Vincent Dusabejambo, Claudine Karigire, Andre N. Sofair, Tim Walker, and Janet J. Ho

Subjects
leadership, 020205 medical informatics, International Cooperation, education, Job description, Developing country, Context (language use), Infectious and parasitic diseases, RC109-216, 02 engineering and technology, medical, Training (civil), 03 medical and health sciences, 0302 clinical medicine, Surveys and Questionnaires, 0202 electrical engineering, electronic engineering, information engineering, Medicine, Humans, 030212 general & internal medicine, Medical education, business.industry, Administrative Personnel, Rwanda, Internship and Residency, General Medicine, Residency program, Focus group, Work (electrical), Job Description, Public aspects of medicine, RA1-1270, business, Developed country
Abstract

Background The year-long position of chief medical resident is a time-honored tradition in the United States that serves to provide the trainee with an opportunity to gain further skills as a clinician, leader, teacher, liaison, and administrator. However, in most training programs in the developing world, this role does not exist. Objectives We sought to develop a collaborative program to train the first medical chief residents for the University of Rwanda and to assess the impact of the new chief residency on residency training, using questionnaires and qualitative interviews with Rwandan faculty, chief residents, and residents. Methods The educational context and the process leading up to the appointment of Rwandan chief residents, including selection, job description, and necessary training (in the United States and Rwanda), are described. One year after implementation, we used a parallel, mixed methods approach to evaluate the new chief medical resident program through resident surveys as well as semistructured interviews with key informants, including site chief residents, chief residents, and faculty. We also observed chief residents and site chief residents at work and convened focus groups with postgraduate residents to yield additional qualitative information. Results Rwandan faculty and residents generally felt that the new position had improved the educational and administrative structure of the teaching program while providing a training ground for future academicians. Conclusions A collaborative training program between developing and developed world academic institutions provides an efficient model for the development of a new chief residency program in the developing world.

Published
2017

31. Feasibility Study of Molecular Profiling of Gastric Cancer Specimens From Rwanda

Author

Francine B. DeAbreu, Oswald Habyarimana, Belson Rugwizangoga, Vincent Dusabejambo, Eric Rutaganda, Steve P. Bensen, Mary D. Chamberlin, and Gregory J. Tsongalis

Subjects
Oncology, Cancer Research, medicine.medical_specialty, Pathology, Somatic cell, business.industry, Internal medicine, High mortality, medicine, business
Abstract

Abstract 51 Background: Gastric cancer is associated with high mortality in Rwanda. Geographic or genetic differences may lead to variations in somatic mutations and novel therapies. Overseas collaboration to determine gastric cancer molecular profiles is paramount. We undertook this work to determine the feasibility of collaboration between researchers in Rwanda and the United States by creating a research platform for gastric and other cancers in Rwanda. Methods: Patients consented for biopsy. Cases that were confirmed as gastric adenocarcinoma were included. Formalin-fixed paraffin-embedded tissue blocks or eight unstained sections (4 μm) were transported to the United States. DNA extraction and library preparation was performed by using 50 ng gDNA. Samples were normalized, pooled, and sequenced by using the Pillar NGS SLIMamp Lung Hot Spot Panel (Pillar Biosciences, Natick, MA). FASTq files were uploaded to Pillar Biosciences to perform sequence alignment, annotation, and variant classification. Results: Fifty-seven samples were received and 35 were excluded because of low DNA yield or quality (18 and 17, respectively). Mutations were detected in nine (41%) of 22 samples. One sample contained three mutations, other cases had one to two mutations identified. In total, 12 mutations were identified: TP53 (four), SMAD4 (two), ERBB4 (two; S341L and D228N), PTEN (two; K267RfsTer9 and C136Y), FBXW7 (one), and KRAS (one). Conclusion: Overseas collaboration for the molecular profiling of gastric cancer samples is feasible. Quality improved with larger biopsies or tissue blocks. Frequency of mutations is lower than expected. ERBB4 mutations identified are not known to be pathogenic. PTEN mutations are considered pathogenic—a potential target for therapy in larger trials. A larger fusion panel may be more effective in identifying potential targets. Funding: Pillar Biosciences provided reagents for sequencing. AUTHORS' DISCLOSURES OF POTENTIAL CONFLICTS OF INTEREST Mary D. Chamberlin Research Funding: Pillar Biosciences Belson Rugwizangoga No relationship to disclose Francine B. DeAbreu No relationship to disclose Eric Rutaganda No relationship to disclose Vincent Dusabejambo No relationship to disclose Oswald Habyarimana No relationship to disclose Steve Bensen No relationship to disclose Gregory J. Tsongalis Honoraria: Roche, ChromaCode, Foundation Medicine, Physician Choice Labs Consulting or Advisory Role: Baystate Health System, Jackson Laboratory for Genomic Medicine (Inst) Research Funding: Qiagen, Illumina, QuanDx, Leica Biosystems, Abbott Molecular, Affymetrix

Published
2017
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32. Barriers to Performing Minimally Invasive Surgery in Rwanda: An Assessment of National Demand, Utilization Rates, and Perceived Challenges

Author

Tim Walker, Ainhoa Costas, Sanctus Musafiri, Zeta Mutabazi, Faith C. Robertson, John W. Scott, Georges Ntakiyiruta, Emmanuel Kayibanda, Constance Mukabatsinda, and Vincent Dusabejambo

Subjects
medicine.medical_specialty, business.industry, Invasive surgery, medicine, Surgery, Intensive care medicine, business
Published
2016
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33. Validation of the Kinyarwanda-version Short-Form Leeds Dyspepsia Questionnaire and Short-Form Nepean Dyspepsia Index to assess dyspepsia prevalence and quality-of-life impact in Rwanda

Author

Arcade Nkurunziza, Tim Walker, Vincent Dusabejambo, Kelly Everhart, and Steve P. Bensen

Subjects
Adult, Male, medicine.medical_specialty, Index (economics), Adolescent, Psychological intervention, Gastroenterology and Hepatology, Sensitivity and Specificity, Severity of Illness Index, Tertiary care, Time-to-Treatment, Tertiary Care Centers, Young Adult, 03 medical and health sciences, 0302 clinical medicine, PRIMARY CARE, Quality of life, Surveys and Questionnaires, Severity of illness, Humans, Medicine, Translations, 030212 general & internal medicine, Dyspepsia, Language, Kinyarwanda, Receiver operating characteristic, business.industry, Research, Rwanda, Reproducibility of Results, Endoscopy, General Medicine, Middle Aged, language.human_language, ROC Curve, Clinical diagnosis, Quality of Life, language, Physical therapy, Female, 030211 gastroenterology & hepatology, business
Abstract

Objectives We aimed to develop and validate Kinyarwanda versions of Short-Form Leeds Dyspepsia Questionnaire (SF-LDQ) and Short-Form Nepean Dyspepsia Index (SF-NDI) to measure the frequency and severity of dyspepsia and associated quality-of-life impact in Rwanda. Setting A single, tertiary care centre in Rwanda. Participants 200 consecutive Kinyarwanda-speaking patients referred to endoscopy (100 patients) or medical outpatients (100 patients). Interventions Kinyarwanda versions of the SF-LDQ and SF-NDI were developed from English versions by translation, with back translation, crosschecking and pilot testing. Study participants completed these questionnaires at enrolment (time 1), and then completed the surveys again with blinded phone interviewers 3 days later (time 2). 20 randomly selected participants, diagnosed with a peptic ulcer on index endoscopy, completed a third survey by phone at day 30 (time 3), after therapy. Primary outcome measures Internal consistency at time 1 (by Cronbach's α) and test–retest reliability between time 1 and time 2 (Spearman's correlation coefficient) for translated SF-LDQ and SF-NDI; validity versus clinical diagnosis (by receiver operating characteristic (ROC) curve) and responsiveness to treatment for SF-LDQ (by change in mean score). All outcomes were measured as per protocol. Results Cronbach's α of the translated SF-LDQ was 0.93, showing high internal consistency. Spearman's correlation coefficient comparing time 1 and time 2 was 0.978 (p

Published
2016
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