93 results on '"Bomze, D."'
Search Results
2. 073 Molecular epidemiology of epidermolysis bullosa in a Middle Eastern population
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Bergson, S., primary, Daniely, D., additional, Bomze, D., additional, Falik-Zaccai, T., additional, Avitan-Hersh, E., additional, Shalev, S., additional, Schwartz, M Eskin-, additional, Sarig, O., additional, Sprecher, E., additional, and Samuelov, L., additional
- Published
- 2021
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3. Genomic profiling of late-onset basal cell carcinomas from two brothers with nevoid basal cell carcinoma syndrome
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Hasan Ali, O, Yurchenko, A A, Pavlova, O, Sartori, A, Bomze, D, Higgins, R, Ring, S S, Hartmann, F, Bühler, D, Fritzsche, F R, Jochum, W, Navarini, A A, Kim, A, French, L E, Dermitzakis, E, Christiano, A M, Hohl, D, Bickers, D R, Nikolaev, S I, Flatz, L, University of Zurich, Nikolaev, S I, and Flatz, L
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2708 Dermatology ,10177 Dermatology Clinic ,610 Medicine & health ,2725 Infectious Diseases - Published
- 2021
4. Load-bearing capacity of CAD/CAM 3D-printed zirconia, CAD/CAM milled zirconia, and heat-pressed lithium disilicate ultra-thin occlusal veneers on molars
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Ioannidis, A, Bomze, D, Hämmerle, C H F, Hüsler, J, Birrer, O, Mühlemann, S, Ioannidis, A, Bomze, D, Hämmerle, C H F, Hüsler, J, Birrer, O, and Mühlemann, S
- Abstract
OBJECTIVES: The load-bearing capacity of ultra-thin occlusal veneers made of 3D-printed zirconia were compared to the ones obtained by fabricating these reconstructions by CAD/CAM milling zirconia or heat-pressing lithium-disilicate. METHODS: On 60 extracted human molars, the occlusal enamel was removed and extended into dentin. Occlusal veneers of 0.5 mm thickness were digitally designed. The specimens were divided into 3 groups (n = 20 each) differing in the restorative material and the fabrication technique of the occlusal veneer. (1) 3DP: 3D-printed zirconia (Lithoz); (2): CAM: milled zirconia (Ceramill Zolid FX); (3) HPR: heat-pressed lithium disilicate (IPS e.max Press). After conditioning procedures, the restorations were adhesively bonded onto the conditioned tooth. Thereafter, all specimens were aged in a chewing simulator by exposure to cyclic fatigue and temperature variations. Subsequently the specimens were statically loaded and the load which was necessary to decrease the maximum load by 20% and initiate a crack (F$_{initial}$) and the load which was needed to fracture the specimen (F$_{max}$) were measured. Differences between the groups were compared applying the Kruskal-Wallis (KW) test and the Wilcoxon-Mann-Whitney-Test (WMW: p < 0.05). RESULTS: The median F$_{initial}$ values for the groups 3DP, CAM and HPR were 1'650 N, 1'250 N and 500 N. The differences between all three groups were statistically significant (KW: p < 0.0001). The median F$_{max}$ values amounted to 2'026 N for the group 3DP, 1'500 N for the group CAM and 1'555 N for the group HPR. Significant differences were found between 3DP and CAM (WMW: p = 0.0238). SIGNIFICANCE: Regarding their load-bearing capacity, 3D-printed or milled zirconia, as well as heat-pressed lithium disilicate, can be recommended as restorative material for ultra-thin occlusal veneers to prosthetically compensate for occlusal tooth wear. Despite statistically significant differences between the restoration mate
- Published
- 2020
5. Genomic profiling of late‐onset basal cell carcinomas from two brothers with nevoid basal cell carcinoma syndrome
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Hasan Ali, O., primary, Yurchenko, A.A., additional, Pavlova, O., additional, Sartori, A., additional, Bomze, D., additional, Higgins, R., additional, Ring, S.S., additional, Hartmann, F., additional, Bühler, D., additional, Fritzsche, F.R., additional, Jochum, W., additional, Navarini, A.A., additional, Kim, A., additional, French, L.E., additional, Dermitzakis, E., additional, Christiano, A.M., additional, Hohl, D., additional, Bickers, D.R., additional, Nikolaev, S.I., additional, and Flatz, L., additional
- Published
- 2020
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6. Load-bearing capacity of CAD/CAM 3D-printed zirconia, CAD/CAM milled zirconia, and heat-pressed lithium disilicate ultra-thin occlusal veneers on molars
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Ioannidis, A., primary, Bomze, D., additional, Hämmerle, C.H.F., additional, Hüsler, J., additional, Birrer, O., additional, and Mühlemann, S., additional
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- 2020
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7. 3D Printing of Zirconia–What is the Future?
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Schweiger, J, primary, Bomze, D, additional, and Schwentenwein, M, additional
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- 2019
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8. Genomic profiling of late‐onset basal cell carcinomas from two brothers with nevoid basal cell carcinoma syndrome.
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Hasan Ali, O., Yurchenko, A.A., Pavlova, O., Sartori, A., Bomze, D., Higgins, R., Ring, S.S., Hartmann, F., Bühler, D., Fritzsche, F.R., Jochum, W., Navarini, A.A., Kim, A., French, L.E., Dermitzakis, E., Christiano, A.M., Hohl, D., Bickers, D.R., Nikolaev, S.I., and Flatz, L.
- Subjects
BASAL cell nevus syndrome ,BASAL cell carcinoma ,BROTHERS ,DNA analysis ,RNA sequencing - Abstract
Background: Nevoid basal cell carcinoma syndrome (NBCCS) is an autosomal dominant genetic disorder. It is commonly caused by mutations in PTCH1 and chiefly characterized by multiple basal cell carcinomas (BCCs) developing prior to the age of 30 years. In rare cases, NBCCS presents with a late onset of BCC development. Objective: To investigate BCC tumorigenesis in two brothers, who showed characteristic features of NBCCS but developed their first BCCs only after the age of 40 years. Two other siblings did not show signs of NBCCS. Results: We obtained blood samples from four siblings and nine BCCs from the two brothers with NBCCS. Whole exome sequencing and RNA sequencing revealed loss of heterozygosity (LOH) of PTCH1 in eight out of nine tumours that consistently involved the same haplotype on chromosome 9. This haplotype contained a germinal splice site mutation in PTCH1 (NM_001083605:exon9:c.763‐6C>A). Analysis of germline DNA confirmed segregation of this mutation with the disease. All BCCs harboured additional somatic loss‐of‐function (LoF) mutations in the remaining PTCH1 allele which are not typically seen in other cases of NBCCS. This suggests a hypomorphic nature of the germinal PTCH1 mutation in this family. Furthermore, all BCCs had a similar tumour mutational burden compared to BCCs of unrelated NBCCS patients while harbouring a higher number of damaging PTCH1 mutations. Conclusions: Our data suggest that a sequence of three genetic hits leads to the late development of BCCs in two brothers with NBCCS: a hypomorphic germline mutation, followed by somatic LOH and additional mutations that complete PTCH1 inactivation. These genetic events are in line with the late occurrence of the first BCC and with the higher number of damaging PTCH1 mutations compared to usual cases of NBCCS. [ABSTRACT FROM AUTHOR]
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- 2021
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9. LB1513 Autoantibodies against collagen XVII (BP180) favor the development of cutaneous toxicity during checkpoint inhibitor therapy
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Hasan Ali, O., primary, Bomze, D., additional, Ring, S., additional, Berner, F., additional, Fässler, M., additional, Diem, S., additional, Cozzio, A., additional, Jochum, W., additional, Zillikens, D., additional, Sadik, C., additional, and Flatz, L., additional
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- 2018
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10. Long-term culture and expansion of primary human hepatocytes
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Levy, G., Bomze, D., Heinz, S., Ramachandran, S.D., Noerenberg, A., Cohen, M., Shibolet, O., Sklan, E., Braspenning, J.C., Nahmias, Y., Levy, G., Bomze, D., Heinz, S., Ramachandran, S.D., Noerenberg, A., Cohen, M., Shibolet, O., Sklan, E., Braspenning, J.C., and Nahmias, Y.
- Abstract
Item does not contain fulltext, Hepatocytes have a critical role in metabolism, but their study is limited by the inability to expand primary hepatocytes in vitro while maintaining proliferative capacity and metabolic function. Here we describe the oncostatin M (OSM)-dependent expansion of primary human hepatocytes by low expression of the human papilloma virus (HPV) genes E6 and E7 coupled with inhibition of epithelial-to-mesenchymal transition. We show that E6 and E7 expression upregulates the OSM receptor gp130 and that OSM stimulation induces hepatocytes to expand for up to 40 population doublings, producing 1013 to 1016 cells from a single human hepatocyte isolate. OSM removal induces differentiation into metabolically functional, polarized hepatocytes with functional bile canaliculi. Differentiated hepatocytes show transcriptional and toxicity profiles and cytochrome P450 induction similar to those of primary human hepatocytes. Replication and infectivity of hepatitis C virus (HCV) in differentiated hepatocytes are similar to those of Huh7.5.1 human hepatoma cells. These results offer a means of expanding human hepatocytes of different genetic backgrounds for research, clinical applications and pharmaceutical development.
- Published
- 2015
11. Successful radical induced cationic frontal polymerization of epoxy-based monomers by C–C labile compounds
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Bomze, D., primary, Knaack, P., additional, and Liska, R., additional
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- 2015
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12. Autoreactive napsin A-specific T cells are enriched in lung tumors and inflammatory lung lesions during immune checkpoint blockade
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Berner, F, primary, Bomze, D, additional, Lichtensteiger, C, additional, Walter, V, additional, Niederer, R, additional, Ali, OH, additional, Wyss, N, additional, Bauer, J, additional, Freudenmann, LK, additional, Marcu, A, additional, Wolfschmitt, E, additional, Haen, S, additional, Gross, T, additional, Abdou, M, additional, Diem, S, additional, Knöpfli, S, additional, Sinnberg, T, additional, Hofmeister, K, additional, Cheng, H, additional, Toma, M, additional, Klümper, N, additional, Purde, M, additional, Pop, OT, additional, Jochum, A, additional, Pascolo, S, additional, Joerger, M, additional, Früh, M, additional, Jochum, W, additional, Rammensee, H, additional, Läubli, H, additional, Hölzel, M, additional, Neefjes, J, additional, Walz, J, additional, and Flatz, L, additional
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13. Analysis of new treatments proposed for malignant pleural mesothelioma raises concerns about the conduction of clinical trials in oncology
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Tomer Meirson, Valerio Nardone, Francesca Pentimalli, Gal Markel, David Bomze, Maria D’Apolito, Pierpaolo Correale, Antonio Giordano, Luigi Pirtoli, Camillo Porta, Steven G Gray, Luciano Mutti, Meirson, T., Nardone, V., Pentimalli, F., Markel, G., Bomze, D., D'Apolito, M., Correale, P., Giordano, A., Pirtoli, L., Porta, C., Gray, S. G., and Mutti, L.
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General Medicine ,General Biochemistry, Genetics and Molecular Biology - Abstract
In this commentary, using existing clinical trial data and FDA approvals we propose that there is currently a critical need for an appropriate balancing between the financial impact of new cancer drugs and their actual benefit for patients. By adopting “pleural mesothelioma” as our clinical model we summarize the most relevant pertinent and available literature on this topic, and use an analysis of the reliability of the trials submitted for registration and/or recently published as a case in point to raise concerns with respect to appropriate trial design, biomarker based stratification and to highlight the ongoing need for balancing the benefit/cost ratio for both patients and healthcare providers.
- Published
- 2022
14. Design and optimization of a novel patient-specific subperiosteal implant additively manufactured in yttria-stabilized zirconia.
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Oberoi G, Kornfellner E, Aigner DA, Unger E, Schwentenwein M, Bomze D, Staudigl C, Pahr D, and Moscato F
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- Humans, Printing, Three-Dimensional, Maxilla surgery, Computer-Aided Design, Tomography, X-Ray Computed, Elastic Modulus, Tensile Strength, Dental Stress Analysis, Materials Testing, Zirconium chemistry, Yttrium chemistry, Finite Element Analysis, Dental Prosthesis Design, Dental Implants
- Abstract
Objective: To design a patient-specific subperiosteal implant for a severely atrophic maxillary ridge using yttria-stabilized additively manufactured zirconia (3YSZ) and evaluate its material properties by applying topology optimization (TO) to replace bulk material with a lattice structure., Materials: A contrast-based segmented skull model from anonymized computed tomography data of a patient was used for the initial anatomical design of the implant for the atrophic maxillary ridge. The implant underwent finite element analysis (FEA) and TO under different occlusal load-bearing conditions. The resulting implant designs, in bulk material and lattice, were evaluated via in-silico tensile tests and 3D printed., Results: The workflow produced two patient-specific subperiosteal designs: a) an anatomically precise bulk implant, b) a TO lattice implant. In-silico tensile tests revealed that the Young's modulus of yttria-stabilized zirconia is 205 GPa for the bulk material and 83.3 GPa for the lattice. Maximum principal stresses in the implant were 61.14 MPa in bulk material and 278.63 MPa in lattice, both tolerable, indicating the redesigned implant can withstand occlusal forces of 125-250 N per abutment. Furthermore, TO achieved a 13.10 % mass reduction and 208.71 % increased surface area, suggesting improved osteointegration potential., Significance: The study demonstrates the planning and optimization of ceramic implant topology. A further iteration of the implant was successfully implanted in a patient-named use case, employing the same fabrication process and parameters., (Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)
- Published
- 2024
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15. Fecal microbiota transplantation in capsules for the treatment of steroid refractory and steroid dependent acute graft vs. host disease: a pilot study.
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Youngster I, Eshel A, Geva M, Danylesko I, Henig I, Zuckerman T, Fried S, Yerushalmi R, Shem-Tov N, Fein JA, Bomze D, Shimoni A, Koren O, Shouval R, and Nagler A
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- Humans, Fecal Microbiota Transplantation adverse effects, Pilot Projects, Prospective Studies, Gastrointestinal Tract, Steroids, Hematopoietic Stem Cell Transplantation adverse effects, Graft vs Host Disease etiology
- Abstract
Acute graft-versus-host disease (aGvHD) is a serious complication of allogeneic hematopoietic stem-cell transplantation with limited treatment options. The gut microbiome plays a critical role in aGvHD pathogenesis. Fecal microbiota transplantation (FMT) has emerged as a potential therapeutic approach to restore gut microbial diversity. In this prospective pilot study, 21 patients with steroid-resistant or steroid-dependent lower gastrointestinal aGvHD received FMT in capsule form. At 28 days after the first FMT, the overall response rate was 52.4%, with 23.8% complete and 28.6% partial responses. However, sustained responses were infrequent, with only one patient remaining aGvHD-free long-term. FMT was generally well-tolerated. Microbiome analysis revealed dysbiosis in pre-FMT patient stool samples, with distinct microbial characteristics compared to donors. Following FMT, there was an increase in beneficial Clostridiales and a decrease in pathogenic Enterobacteriales. These findings highlight the potential of FMT as a treatment option for steroid-resistant aGvHD. Trial registration number NCT #03214289., (© 2024. The Author(s), under exclusive licence to Springer Nature Limited.)
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- 2024
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16. A replicating LCMV-based vaccine for the treatment of solid tumors.
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Purde MT, Cupovic J, Palmowski YA, Makky A, Schmidt S, Rochwarger A, Hartmann F, Stemeseder F, Lercher A, Abdou MT, Bomze D, Besse L, Berner F, Tüting T, Hölzel M, Bergthaler A, Kochanek S, Ludewig B, Lauterbach H, Orlinger KK, Bald T, Schietinger A, Schürch C, Ring SS, and Flatz L
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- Mice, Animals, Lymphocytic choriomeningitis virus genetics, CD8-Positive T-Lymphocytes, Antigens, Neoplasm genetics, Autoantigens, Tumor Microenvironment, Neoplasms drug therapy, Cancer Vaccines
- Abstract
Harnessing the immune system to eradicate tumors requires identification and targeting of tumor antigens, including tumor-specific neoantigens and tumor-associated self-antigens. Tumor-associated antigens are subject to existing immune tolerance, which must be overcome by immunotherapies. Despite many novel immunotherapies reaching clinical trials, inducing self-antigen-specific immune responses remains challenging. Here, we systematically investigate viral-vector-based cancer vaccines encoding a tumor-associated self-antigen (TRP2) for the treatment of established melanomas in preclinical mouse models, alone or in combination with adoptive T cell therapy. We reveal that, unlike foreign antigens, tumor-associated antigens require replication of lymphocytic choriomeningitis virus (LCMV)-based vectors to break tolerance and induce effective antigen-specific CD8
+ T cell responses. Immunization with a replicating LCMV vector leads to complete tumor rejection when combined with adoptive TRP2-specific T cell transfer. Importantly, immunization with replicating vectors leads to extended antigen persistence in secondary lymphoid organs, resulting in efficient T cell priming, which renders previously "cold" tumors open to immune infiltration and reprograms the tumor microenvironment to "hot." Our findings have important implications for the design of next-generation immunotherapies targeting solid cancers utilizing viral vectors and adoptive cell transfer., Competing Interests: Declaration of interests C.M.S. is a scientific advisor to, has stock options in, and has received research funding from Enable Medicine, Inc. L.F. is a founder and shareholder of Hookipa Pharma Inc. F.S., S.S., and K.K.O. are employees and stock option holder of Hookipa Pharma, Inc. L.F., S.S.R., S.S., and K.K.O. are listed as inventors of the patent entitled “Arenavirus particles to treat solid tumors” (patent number WO2018/185307 A1) describing the application of artLCMV vectors in the treatment of tumors., (Copyright © 2023 The Author(s). Published by Elsevier Inc. All rights reserved.)- Published
- 2024
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17. Acidosis-mediated increase in IFN-γ-induced PD-L1 expression on cancer cells as an immune escape mechanism in solid tumors.
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Knopf P, Stowbur D, Hoffmann SHL, Hermann N, Maurer A, Bucher V, Poxleitner M, Tako B, Sonanini D, Krishnamachary B, Sinharay S, Fehrenbacher B, Gonzalez-Menendez I, Reckmann F, Bomze D, Flatz L, Kramer D, Schaller M, Forchhammer S, Bhujwalla ZM, Quintanilla-Martinez L, Schulze-Osthoff K, Pagel MD, Fransen MF, Röcken M, Martins AF, Pichler BJ, Ghoreschi K, and Kneilling M
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- Humans, Animals, Mice, B7-H1 Antigen, Cell Line, Tumor, Immunotherapy, Tumor Microenvironment, Interferon-gamma pharmacology, Interferon-gamma metabolism, Neoplasms genetics
- Abstract
Immune checkpoint inhibitors have revolutionized cancer therapy, yet the efficacy of these treatments is often limited by the heterogeneous and hypoxic tumor microenvironment (TME) of solid tumors. In the TME, programmed death-ligand 1 (PD-L1) expression on cancer cells is mainly regulated by Interferon-gamma (IFN-γ), which induces T cell exhaustion and enables tumor immune evasion. In this study, we demonstrate that acidosis, a common characteristic of solid tumors, significantly increases IFN-γ-induced PD-L1 expression on aggressive cancer cells, thus promoting immune escape. Using preclinical models, we found that acidosis enhances the genomic expression and phosphorylation of signal transducer and activator of transcription 1 (STAT1), and the translation of STAT1 mRNA by eukaryotic initiation factor 4F (elF4F), resulting in an increased PD-L1 expression. We observed this effect in murine and human anti-PD-L1-responsive tumor cell lines, but not in anti-PD-L1-nonresponsive tumor cell lines. In vivo studies fully validated our in vitro findings and revealed that neutralizing the acidic extracellular tumor pH by sodium bicarbonate treatment suppresses IFN-γ-induced PD-L1 expression and promotes immune cell infiltration in responsive tumors and thus reduces tumor growth. However, this effect was not observed in anti-PD-L1-nonresponsive tumors. In vivo experiments in tumor-bearing IFN-γ
-/- mice validated the dependency on immune cell-derived IFN-γ for acidosis-mediated cancer cell PD-L1 induction and tumor immune escape. Thus, acidosis and IFN-γ-induced elevation of PD-L1 expression on cancer cells represent a previously unknown immune escape mechanism that may serve as a novel biomarker for anti-PD-L1/PD-1 treatment response. These findings have important implications for the development of new strategies to enhance the efficacy of immunotherapy in cancer patients., (© 2023. The Author(s).)- Published
- 2023
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18. Projecting complete redaction of clinical trial protocols (RAPTURE): redacted cross sectional study.
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Balaban N, Mohyuddin GR, Kashi A, Massarweh A, Markel G, Bomze D, Goldstein DA, and Meirson T
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- Humans, Cross-Sectional Studies, Research Design, SARS-CoV-2, Treatment Outcome, United States, Clinical Trial Protocols as Topic, COVID-19
- Abstract
Objectives: To characterise redactions in clinical trials and estimate a time when all protocols are fully removed (RAPTURE)., Design: Redacted cross sectional study., Setting: Published phase 3 randomised controlled trials from 1 January 2010 to ██████████████., Participants: New England Journal of Medicine , █ █████████ , and Journal of the American Medical Association ., Main Outcome Measures: █████ ████████ ██████████████ ██████ ██████████ ████████ ████████ ██████████ ███████████ ████████████ ████████████ ████████████████████████ ██████████████████ RESULTS: ████████████████████ met the inclusion criteria, with 268 (56.7%) research protocols available and accessible. The rate of redactions in protocols has increased from 0 in 2010 to 60.8% in 2021 (P<0.001). The degree of data redaction has also increased, with the average cumulative redactions among industry funded trials rising from 0 in 2010 to 3.5 pages in 2021 (P<0.001). Modelling predicts that RAPTURE is expected to occur between 2073 and 2136. Redactions featured predominantly in ████████ sponsored trials and mostly occurred in the statistical design., Conclusions: This study highlights the rise in protocol redactions and predicts that, ██████████████████████████████████████████ will be entirely redacted between 2073 and 2136. A legitimate rationale for the redactions could ███ be found. A multipronged strategy against protocol redactions is required to maintain the integrity of science., Availability: This paper is partially redacted, but for the sake of ███████████, a version without any redactions can be found in the supplementary material., Competing Interests: Competing interests: All authors have completed the ICMJE uniform disclosure form at www.icmje.org/disclosure-of-interest/ and declare: no support from any organisation for the submitted work; TM reports receiving personal fees from Purple Biotech, outside the submitted work. GRM reports receiving royalties from MashupMD for writing, outside the submitted work. GM reports receiving personal fees from MSD and Roche; grants and personal fees from BMS and Novartis; personal fees and stock options from 4C Biomed; and stock options from Nucleai, Biond Biologics, and Ella Therapeutics, outside the submitted work., (© Author(s) (or their employer(s)) 2019. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)
- Published
- 2023
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19. Gender Gap in Leadership of Clinical Trials.
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Waldhorn I, Bomze D, Ben-Aharon I, Schlosser S, Markel G, Ludmir EB, and Meirson T
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- Humans, Leadership, Sex Factors, Cross-Sectional Studies, Gender Equity, Physicians, Women
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- 2023
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20. Autoreactive T cells targeting type II pneumocyte antigens in COVID-19 convalescent patients.
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Lichtensteiger C, Koblischke M, Berner F, Jochum AK, Sinnberg T, Balciunaite B, Purde MT, Walter V, Abdou MT, Hofmeister K, Kohler P, Vernazza P, Albrich WC, Kahlert CR, Zoufaly A, Traugott MT, Kern L, Pietsch U, Kleger GR, Filipovic M, Kneilling M, Cozzio A, Pop O, Bomze D, Bergthaler A, Hasan Ali O, Aberle J, and Flatz L
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- Humans, Male, Female, Middle Aged, Aged, T-Lymphocytes immunology, Adult, Severity of Illness Index, Convalescence, Autoimmunity, COVID-19 immunology, SARS-CoV-2 immunology, Alveolar Epithelial Cells immunology, Alveolar Epithelial Cells metabolism, Autoantigens immunology
- Abstract
Background: The role of autoreactive T cells on the course of Coronavirus disease-19 (COVID-19) remains elusive. Type II pneumocytes represent the main target cells of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Autoimmune responses against antigens highly expressed in type II pneumocytes may influence the severity of COVID-19 disease., Objective: The aim of this study was to investigate autoreactive T cell responses against self-antigens highly expressed in type II pneumocytes in the blood of COVID-19 patients with severe and non-severe disease., Methods: We collected blood samples of COVID-19 patients with varying degrees of disease severity and of pre-pandemic controls. T cell stimulation assays with peptide pools of type II pneumocyte antigens were performed in two independent cohorts to analyze the autoimmune T cell responses in patients with non-severe and severe COVID-19 disease. Target cell lysis assays were performed with lung cancer cell lines to determine the extent of cell killing by type II PAA-specific T cells., Results: We identified autoreactive T cell responses against four recently described self-antigens highly expressed in type II pneumocytes, known as surfactant protein A, surfactant protein B, surfactant protein C and napsin A, in the blood of COVID-19 patients. These antigens were termed type II pneumocyte-associated antigens (type II PAAs). We found that patients with non-severe COVID-19 disease showed a significantly higher frequency of type II PAA-specific autoreactive T cells in the blood when compared to severely ill patients. The presence of high frequencies of type II PAA-specific T cells in the blood of non-severe COVID-19 patients was independent of their age. We also found that napsin A-specific T cells from convalescent COVID-19 patients could kill lung cancer cells, demonstrating the functional and cytotoxic role of these T cells., Conclusions: Our data suggest that autoreactive type II PAA-specific T cells have a protective role in SARS-CoV-2 infections and the presence of high frequencies of these autoreactive T cells indicates effective viral control in COVID-19 patients. Type II-PAA-specific T cells may therefore promote the killing of infected type II pneumocytes and viral clearance., (Copyright © 2023 Elsevier Ltd. All rights reserved.)
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- 2023
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21. Clinical and molecular features in a cohort of Middle Eastern patients with epidermolysis bullosa.
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Bergson S, Daniely D, Bomze D, Mohamad J, Malovitski K, Meijers O, Briskin V, Bihari O, Malchin N, Israeli S, Mashiah J, Falik-Zaccai T, Avitan-Hersh E, Eskin-Schwartz M, Allon-Shalev S, Sarig O, Sprecher E, and Samuelov L
- Subjects
- Humans, Skin pathology, Epidermolysis Bullosa complications, Epidermolysis Bullosa, Junctional complications, Epidermolysis Bullosa, Junctional genetics, Epidermolysis Bullosa, Junctional pathology, Epidermolysis Bullosa Dystrophica complications, Epidermolysis Bullosa Simplex genetics, Epidermolysis Bullosa Simplex complications
- Abstract
Background: Epidermolysis bullosa (EB) features skin and mucosal fragility due to pathogenic variants in genes encoding components of the cutaneous basement membrane. Based on the level of separation within the dermal-epidermal junction, EB is sub-classified into four major types including EB simplex (EBS), junctional EB (JEB), dystrophic EB (DEB), and Kindler EB (KEB) with 16 EB-associated genes reported to date., Methods: We ascertained a cohort of 151 EB patients of various Middle Eastern ethnic backgrounds., Results: The cohort was comprised of EBS (64%, 97/151), DEB (21%, 31/151), JEB (12%, 18/151), and KEB (3%, 5/151). KRT14 and KRT5 variants were most common among EBS patients with 43% (42/97) and 46% (45/97) of EBS patients carrying mutations in either of these two genes, respectively. Truncal involvement was more common in KRT14-associated EBS as compared to EBS due to KRT5 mutations (p < .05). Mutations in COL17A1 and laminin 332-encoding genes were identified in 55% (10/18) and 45% (8/18) of JEB patients. Scarring alopecia, caries, and EB nevi were most common among JEB patients carrying COL17A1 mutations as compared to laminin 332-associated JEB (p < .05). Abnormal nails were evident in most DEB and JEB patients while poikiloderma was exclusively observed in KEB (p < .001)., Conclusions: EB patients of Middle Eastern origin were found to feature specific phenotype-genotype correlations of relevance to the diagnosis and genetic counseling of patients in this region., (© 2023 The Authors. Pediatric Dermatology published by Wiley Periodicals LLC.)
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- 2023
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22. Wear behaviour of lithography ceramic manufactured dental zirconia.
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Patil A, D DJ, Bomze D, and Gopal V
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- Humans, Zirconium, Computer-Aided Design, Surface Properties, Materials Testing, Dental Materials, Dental Porcelain, Ceramics
- Abstract
Objective: The study aims to evaluate the wear surface using 3D surface roughness and other material characterization of zirconia fabricated using photopolymerization based Lithography-based Ceramic Manufacturing (LCM)., Method: LCM technology was used to fabricate zirconia specimens of size 10 × 10 × 2mm
3 . Scanning Electron Microscope, 3D-profilometer, X-ray Diffraction, and hardness test characterized the samples before and after wear and Coefficient of friction (COF) was monitored., Result: The COF was around 0.7 and did not differ much between the horizontally and vertically printed specimens. However, the surface roughness after wear for horizontally printed specimen was 0.567 ± 0.139 μm, while that for vertically printed specimen was 0.379 ± 0.080 μm. The reduced valley depth and the dale void volume were low for the vertically printed zirconia specimen, indicating lesser voids and low fluid retention. In addition, it was observed that the hardness value of the vertically printed sample was better. The scanning electron microscopic images and 3D surface profiles of the zirconia specimens depicted the surface topography and revealed the wear track., Conclusion: The study shows that zirconia fabricated using LCM technology possesses surface roughness of about 0.5 μm with no machining scars that are usually associated with CAD/CAM dentistry and also indicating agreement with clinically acceptable values for minimal surface roughness of dental restorations. Dental restorations using LCM fabricated zirconia redues the requirement of post-processing work flow that is part of CAD/CAM dentistry., (© 2023. The Author(s).)- Published
- 2023
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23. Immune signatures predict development of autoimmune toxicity in patients with cancer treated with immune checkpoint inhibitors.
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Nuñez NG, Berner F, Friebel E, Unger S, Wyss N, Gomez JM, Purde MT, Niederer R, Porsch M, Lichtensteiger C, Kramer R, Erdmann M, Schmitt C, Heinzerling L, Abdou MT, Karbach J, Schadendorf D, Zimmer L, Ugurel S, Klümper N, Hölzel M, Power L, Kreutmair S, Capone M, Madonna G, Cevhertas L, Heider A, Amaral T, Hasan Ali O, Bomze D, Dimitriou F, Diem S, Ascierto PA, Dummer R, Jäger E, Driessen C, Levesque MP, van de Veen W, Joerger M, Früh M, Becher B, and Flatz L
- Subjects
- Humans, Immune Checkpoint Inhibitors adverse effects, Leukocytes, Mononuclear pathology, CD8-Positive T-Lymphocytes pathology, Ki-67 Antigen, Prospective Studies, Proteomics, Carcinoma, Non-Small-Cell Lung drug therapy, Carcinoma, Non-Small-Cell Lung pathology, Lung Neoplasms drug therapy, Lung Neoplasms pathology, Melanoma drug therapy, Immune System Diseases drug therapy
- Abstract
Background: Immune checkpoint inhibitors (ICIs) are among the most promising treatment options for melanoma and non-small cell lung cancer (NSCLC). While ICIs can induce effective anti-tumor responses, they may also drive serious immune-related adverse events (irAEs). Identifying biomarkers to predict which patients will suffer from irAEs would enable more accurate clinical risk-benefit analysis for ICI treatment and may also shed light on common or distinct mechanisms underpinning treatment success and irAEs., Methods: In this prospective multi-center study, we combined a multi-omics approach including unbiased single-cell profiling of over 300 peripheral blood mononuclear cell (PBMC) samples and high-throughput proteomics analysis of over 500 serum samples to characterize the systemic immune compartment of patients with melanoma or NSCLC before and during treatment with ICIs., Findings: When we combined the parameters obtained from the multi-omics profiling of patient blood and serum, we identified potential predictive biomarkers for ICI-induced irAEs. Specifically, an early increase in CXCL9/CXCL10/CXCL11 and interferon-γ (IFN-γ) 1 to 2 weeks after the start of therapy are likely indicators of heightened risk of developing irAEs. In addition, an early expansion of Ki-67
+ regulatory T cells (Tregs) and Ki-67+ CD8+ T cells is also likely to be associated with increased risk of irAEs., Conclusions: We suggest that the combination of these cellular and proteomic biomarkers may help to predict which patients are likely to benefit most from ICI therapy and those requiring intensive monitoring for irAEs., Funding: This work was primarily funded by the European Research Council, the Swiss National Science Foundation, the Swiss Cancer League, and the Forschungsförderung of the Kantonsspital St. Gallen., Competing Interests: Declaration of interests L.F. has/had advisory roles for Novartis, Sanofi, Philogen, and Bristol-Myers Squibb, all which took place outside the submitted work. P.A.A. has/had consultant/advisory roles for Bristol-Myers Squibb, Roche-Genentech, Merck Sharp & Dohme, Novartis, Array BioPharma, Merck Serono, Pierre Fabre, Incyte, MedImmune, AstraZeneca, Syndax, Sun Pharma, Sanofi, Idera, Ultimovacs, Sandoz, Immunocore, 4SC, Alkermes, Italfarmaco, Nektar, Boehringer-Ingelheim, Eisai, Regeneron, Daiichi Sankyo, Pfizer, Oncosec, Nouscom, Takis, Lunaphore Technologies, Seattle Genetics, ITeos Therapeutics, Medicenna, Bio-Al Health, and ValoTx; he also received research funding from Bristol-Myers Squibb, Roche-Genentech, Array, Sanofi, and Pfizer, as well as travel support from Merck Sharp & Dhome and Pfizer, all which was outside the submitted work. T.A. served as consultant to Bristol-Myers Squibb, Novartis, and CeCaVa; received travel support from Bristol-Myers Squibb and Novartis; received speaker fees from Novartis, Bristol-Myers Squibb, Pierre Fabre, and CeCaVa; received institutional funding from Neracare, Novartis, Sanofi, and SkylineDX; and received institutional research grants from Novartis outside the submitted work. R.D. has intermittent, project-focused consulting and/or advisory relationships with Novartis, Merck Sharp & Dhome, Bristol-Myers Squibb, Roche, Amgen, Takeda, Pierre Fabre, Sun Pharma, Sanofi, Catalym, Second Genome, Regeneron, Alligator, T3 Pharma, MaxiVAX SA, Pfizer, and touchIME, all which took place outside the submitted work. W.v.d.V. declares research support from the Novartis research foundation and the PROMEDICA Stiftung and serves as a consultant for Mabylon outside the submitted work. S.U. declares research support from Bristol-Myers Squibb and Merck Serono; speakers and advisory board honoraria from Bristol-Myers Squibb, Merck Sharp & Dohme, Merck Serono, Novartis, and Roche; and travel support from Bristol-Myers Squibb, Merck Sharp & Dohme, and Pierre Fabre outside the submitted work. L.Z. declares speakers and advisory board honoraria from Bristol-Myers Squibb, Merck Sharp & Dohme, Novartis, Pierre Fabre, Sanofi, and Sunpharma; research support from Novartis; and travel support from Merck Sharp & Dohme, Bristol-Myers Squibb, Pierre Fabre, Sanofi, Sunpharma, and Novartis outside the submitted work. F.D. receives/received honoraria and travel support from Merck Sharp & Dohme, Bristol-Myers Squibb, and Sun Pharma outside the submitted work. L.H. declares research support from Therakos and speakers and advisory board honoraria from Amgen, BiomeDx, Bristol-Myers Squibb, Curevac, Merck, Merck Sharp & Dohme, Myoncare, Novartis, Pierre Fabre, Sanofi, SUN, and Roche, outside the submitted work. M.E. declares honoraria and travel support from Bristol-Myers Squibb, Immunocore, and Novartis outside the submitted work. R.K. declares travel support from Pierre Fabre and Sun Pharma outside the submitted work. M.J. declares advisory roles (institutional) for Novartis, AstraZeneca, Basilea Pharmaceutica, Bayer, Bristol-Myers Squibb, Debiopharm, Merck Sharp & Dhome, Roche, and Sanofi; research funding from Swiss Cancer Research; and travel grants from Roche, Sanofi, and Takeda. D.S. has/had consultant/advisory roles in the last 3 years for Bristol-Myers Squibb, Merck Sharp & Dohme, Novartis, Array, Merck Serono, Pfizer, Pierre Fabre, Sun Pharma, Sanofi, Regeneron, Ultimovacs, Sandoz, Immunocore, 4SC, Neracare, Nektar, Daiichi Sankyo, Oncosec, Amgen, BioCon, Immatics, InFlarX, Innovent, Labcorp, Replimune, and Haystack; his institution also received research funding from Bristol-Myers Squibb, Roche-Genentech, Array, and Merck Sharp & Dhome, all of which took place outside the submitted work. N.K. received personal fees, travel costs, and speaker’s honoraria from Astellas, Novartis, Ipsen, and Photocure, all of which took place outside the submitted work. M.P.L. has received project-specific research funding from Roche, Novartis, Molecular Partners, and Oncobit., (Copyright © 2023 The Authors. Published by Elsevier Inc. All rights reserved.)- Published
- 2023
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24. Systemic structural analysis of alterations reveals a common structural basis of driver mutations in cancer.
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Meirson T, Bomze D, Schueler-Furman O, Stemmer SM, and Markel G
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A major effort in cancer research is to organize the complexities of the disease into fundamental traits. Despite conceptual progress in the last decades and the synthesis of hallmark features, no organizing principles governing cancer beyond cellular features exist. We analyzed experimentally determined structures harboring the most significant and prevalent driver missense mutations in human cancer, covering 73% ( n = 168178) of the Catalog of Somatic Mutation in Cancer tumor samples (COSMIC). The results reveal that a single structural element-κ-helix (polyproline II helix)-lies at the core of driver point mutations, with significant enrichment in all major anatomical sites, suggesting that a small number of molecular traits are shared by most and perhaps all types of cancer. Thus, we uncovered the lowest possible level of organization at which carcinogenesis takes place at the protein level. This framework provides an initial scheme for a mechanistic understanding underlying the development of tumors and pinpoints key vulnerabilities., (© The Author(s) 2023. Published by Oxford University Press on behalf of NAR Cancer.)
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- 2023
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25. Pulmonary Surfactant Proteins Are Inhibited by Immunoglobulin A Autoantibodies in Severe COVID-19.
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Sinnberg T, Lichtensteiger C, Ali OH, Pop OT, Jochum AK, Risch L, Brugger SD, Velic A, Bomze D, Kohler P, Vernazza P, Albrich WC, Kahlert CR, Abdou MT, Wyss N, Hofmeister K, Niessner H, Zinner C, Gilardi M, Tzankov A, Röcken M, Dulovic A, Shambat SM, Ruetalo N, Buehler PK, Scheier TC, Jochum W, Kern L, Henz S, Schneider T, Kuster GM, Lampart M, Siegemund M, Bingisser R, Schindler M, Schneiderhan-Marra N, Kalbacher H, McCoy KD, Spengler W, Brutsche MH, Maček B, Twerenbold R, Penninger JM, Matter MS, and Flatz L
- Subjects
- Humans, Bronchoalveolar Lavage Fluid chemistry, Surface-Active Agents, Autoantibodies, Immunoglobulin A, Pulmonary Surfactants metabolism, COVID-19
- Abstract
Rationale: Coronavirus disease 2019 (COVID-19) can lead to acute respiratory distress syndrome with fatal outcomes. Evidence suggests that dysregulated immune responses, including autoimmunity, are key pathogenic factors. Objectives: To assess whether IgA autoantibodies target lung-specific proteins and contribute to disease severity. Methods: We collected 147 blood, 9 lung tissue, and 36 BAL fluid samples from three tertiary hospitals in Switzerland and one in Germany. Severe COVID-19 was defined by the need to administer oxygen. We investigated the presence of IgA autoantibodies and their effects on pulmonary surfactant in COVID-19 using the following methods: immunofluorescence on tissue samples, immunoprecipitations followed by mass spectrometry on BAL fluid samples, enzyme-linked immunosorbent assays on blood samples, and surface tension measurements with medical surfactant. Measurements and Main Results: IgA autoantibodies targeting pulmonary surfactant proteins B and C were elevated in patients with severe COVID-19 but not in patients with influenza or bacterial pneumonia. Notably, pulmonary surfactant failed to reduce surface tension after incubation with either plasma or purified IgA from patients with severe COVID-19. Conclusions: Our data suggest that patients with severe COVID-19 harbor IgA autoantibodies against pulmonary surfactant proteins B and C and that these autoantibodies block the function of lung surfactant, potentially contributing to alveolar collapse and poor oxygenation.
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- 2023
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26. Analysis of new treatments proposed for malignant pleural mesothelioma raises concerns about the conduction of clinical trials in oncology.
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Meirson T, Nardone V, Pentimalli F, Markel G, Bomze D, D'Apolito M, Correale P, Giordano A, Pirtoli L, Porta C, Gray SG, and Mutti L
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- Humans, Reproducibility of Results, Mesothelioma, Malignant, Mesothelioma pathology, Pleural Neoplasms drug therapy, Lung Neoplasms pathology
- Abstract
In this commentary, using existing clinical trial data and FDA approvals we propose that there is currently a critical need for an appropriate balancing between the financial impact of new cancer drugs and their actual benefit for patients. By adopting "pleural mesothelioma" as our clinical model we summarize the most relevant pertinent and available literature on this topic, and use an analysis of the reliability of the trials submitted for registration and/or recently published as a case in point to raise concerns with respect to appropriate trial design, biomarker based stratification and to highlight the ongoing need for balancing the benefit/cost ratio for both patients and healthcare providers., (© 2022. The Author(s).)
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- 2022
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27. Systemic review of the robustness of randomized controlled trials for the treatment of cholangiocarcinoma in three domains: survival-inferred fragility index, restricted mean survival time, and the spin effect.
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Horesh N, Bomze D, Lim C, Markel G, Meirson T, and Azoulay D
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Background: The vast majority of patients with cholangiocarcinoma (CC) have advanced disease at diagnosis and are candidates for palliative treatment only. The robustness of the randomized controlled trials regarding the treatment of CC are assessed., Methods: A systematic review of all randomized control trials (RCT) of treatments for both intra- and extrahepatic CC between 2010 and 2020 was performed. The survival-inferred fragility index (SIFI; the minimum number of reassignments of the best survivors between arms that would overturn the statistical outcomes) was calculated. In addition, the gain, or loss, in survival in RCTs was evaluated by the restricted mean survival time (RMST) difference. Finally, the level of spin i.e., misrepresentation of study outcomes, was measured in inconclusive studies to assess distorted reporting strategies., Results: Out of 6,167 studies retrieved, 11 could be retained for full text revision (7 with both intra- and extrahepatic CC, 3 with peri-hilar CC, and 1 with peri-hilar or distal CC). Only 3 studies included resected patients (2 with both intra- and extrahepatic CC and 1 with peri-hilar or distal CC). Nine studies investigated systemic chemotherapy (including 3 after surgical resection), one study evaluated photodynamic therapy, and another investigated the use of an endoscopically inserted stent in the biliary tract. The median SIFI was -2 [interquartile range (IQR): -6.25, -0.25] across all studies. Overall, the median RMST difference was 0.56 months (IQR: 0.10, 0.95). Finally, for inconclusive studies, the level of spin was high, moderate, and low in respectively 12.5%, 25%, and 62.5% of the studies., Conclusions: RCTs of CC showed a low degree of robustness with a frequent proportion of associated spin., Competing Interests: Conflicts of Interest: All authors have completed the ICMJE uniform disclosure form (available at https://hbsn.amegroups.com/article/view/10.21037/hbsn-21-118/coif). GM reported receiving personal fees from MSD and Roche; grants and personal fees from BMS and Novartis; personal fees and stock options from 4C Biomed; and stock options from Nucleai, Biond Biologics, and Ella Therapeutics outside the submitted work. TM reported receiving personal fees from TyrNovo outside the submitted work. The other authors have no conflicts of interest to declare., (2022 Hepatobiliary Surgery and Nutrition. All rights reserved.)
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- 2022
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28. Anti-SARS-CoV-2 antibody levels after four BNT162b2 vaccine doses among health-care workers.
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Saiag E, Marudi O, Cohen N, Goldiner I, Ben-Ami R, Sprecher E, and Bomze D
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- Humans, BNT162 Vaccine, Antibodies, Viral, Health Personnel, COVID-19 prevention & control, Vaccines
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- 2022
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29. An in vitro comparison of the marginal and internal adaptation of ultrathin occlusal veneers made of 3D-printed zirconia, milled zirconia, and heat-pressed lithium disilicate.
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Ioannidis A, Park JM, Hüsler J, Bomze D, Mühlemann S, and Özcan M
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- Humans, Hot Temperature, Dental Porcelain, Computer-Aided Design, Ceramics, Printing, Three-Dimensional, Crowns, Dental Marginal Adaptation, Dental Prosthesis Design methods
- Abstract
Statement of Problem: Whether additively produced zirconia could overcome problems with conventional computer-aided design and computer-aided manufacture (CAD-CAM) such as milling inaccuracies and provide accurate occlusal veneers is unclear., Purpose: The purpose of this in vitro study was to compare the marginal and internal fit of 3D-printed zirconia occlusal veneers with CAD-CAM-fabricated zirconia or heat-pressed lithium disilicate ceramic (LS2) restorations on molars., Material and Methods: The occlusal enamel in 60 extracted human molars was removed, with the preparation extending into dentin. Occlusal veneers at a thickness of 0.5 mm were designed and manufactured according to their group allocation: 3DP, 3D-printed zirconia; CAM, milled zirconia; and HPR, heat-pressed LS2. The prepared teeth and restorations were scanned and superimposed, and the marginal and internal adaptation were measured 2- and 3-dimensionally; the production accuracy (trueness) was also measured. The comparisons of the group medians were performed with nonparametric methods and a pairwise group comparison (α=.05)., Results: Three-dimensionally printed zirconia revealed median outcomes of 95 μm (margin), 252 μm (cusp), 305 μm (fossa), and 184 μm (3D internal adaptation). CAM showed median values of 65 μm (margin), 128 μm (cusp), 203 μm (fossa), and 120 μm (3D internal adaptation). The respective values for the group HPR were 118 μm (margin), 251 μm (cusp), 409 μm (fossa), and 180 μm (3D internal adaptation). Significant differences (P<.001) between CAM and 3DP (cusp, fossa, 3D internal adaptation) and between CAM and HPR (all regions) were found, with the former group showing higher accuracies. The trueness showed median discrepancies of 26 μm (3DP), 13 μm (CAM), and 29 μm (HPR) with significant differences (P<.001) for the comparisons 3DP-CAM and CAM-HPR., Conclusions: Three-dimensionally printed zirconia occlusal veneers produced by means of lithography-based ceramic manufacturing exhibit a marginal adaptation (95 μm) and a production accuracy (26 μm) similar to those of conventional methods., (Copyright © 2020 Editorial Council for the Journal of Prosthetic Dentistry. Published by Elsevier Inc. All rights reserved.)
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- 2022
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30. The common sense behind clinical trial names: An empirical study of trial acronyms.
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Meirson T, Markel G, and Bomze D
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- Empirical Research, Humans, Drug Industry
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The use of acronyms to name clinical trials, some of which might be manipulative or even coercive, is increasingly popular yet controversial. We aimed to evaluate whether trial acronyms are associated with appealing linguistic cues born of marketing psychology using trade names of perfumes. The proportion of trials (730 clinical trials) titled with an acronym was 61%. Among acronym-named trials, 70% have matching trade names of perfumes, i.e., - alluring names. Industry-sponsored trials were more likely to use acronyms (OR 1.61; 95% CI 1.15-2.26; p = 0.006) and alluring acronyms (OR 2.58; 95% CI 1.61-4.12; p < 0.001). During the period from 2000 to 2020, the proportion of alluring trials increased both for industry and academic funding, from 50% to 77% and from 0% to 57% , respectively. Also, trials with alluring acronyms were cited more often (relative rate of citation, 1.37; 95% CI 1.13-1.66; p = 0.001). The growing use of acronyms coincides with a noticeable increase in manipulative names. Through overt or subliminal enticement, inspirational acronyms that downplay the risks or raise expectations to patients with life-threatening illnesses, may exert undue influence. The observed relationship between manipulative acronyms and sponsorship by the pharmaceutical industry enhances this concern.
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- 2022
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31. Autoreactive napsin A-specific T cells are enriched in lung tumors and inflammatory lung lesions during immune checkpoint blockade.
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Berner F, Bomze D, Lichtensteiger C, Walter V, Niederer R, Hasan Ali O, Wyss N, Bauer J, Freudenmann LK, Marcu A, Wolfschmitt EM, Haen S, Gross T, Abdou MT, Diem S, Knöpfli S, Sinnberg T, Hofmeister K, Cheng HW, Toma M, Klümper N, Purde MT, Pop OT, Jochum AK, Pascolo S, Joerger M, Früh M, Jochum W, Rammensee HG, Läubli H, Hölzel M, Neefjes J, Walz J, and Flatz L
- Subjects
- Antigens, Neoplasm, Autoantigens, CD8-Positive T-Lymphocytes, Histocompatibility Antigens Class I, Humans, Immune Checkpoint Inhibitors, Lung, Carcinoma, Non-Small-Cell Lung genetics, Lung Neoplasms genetics
- Abstract
Cancer treatment with immune checkpoint blockade (ICB) often induces immune-related adverse events (irAEs). We hypothesized that proteins coexpressed in tumors and normal cells could be antigenic targets in irAEs and herein described DITAS (discovery of tumor-associated self-antigens) for their identification. DITAS computed transcriptional similarity between lung tumors and healthy lung tissue based on single-sample gene set enrichment analysis. This identified 10 lung tissue-specific genes highly expressed in the lung tumors. Computational analysis was combined with functional T cell assays and single-cell RNA sequencing of the antigen-specific T cells to validate the lung tumor self-antigens. In patients with non-small cell lung cancer (NSCLC) treated with ICB, napsin A was a self-antigen that elicited strong CD8
+ T cell responses, with ICB responders harboring higher frequencies of these CD8+ T cells compared with nonresponders. Human leukocyte antigen (HLA) class I ligands derived from napsin A were present in human lung tumors and in nontumor lung tissues, and napsin A tetramers confirmed the presence of napsin A-specific CD8+ T cells in blood and tumors of patients with NSCLC. Napsin A-specific T cell clonotypes were enriched in lung tumors and ICB-induced inflammatory lung lesions and could kill immortalized HLA-matched NSCLC cells ex vivo. Single-cell RNA sequencing revealed that these T cell clonotypes expressed proinflammatory cytokines and cytotoxic markers. Thus, DITAS successfully identified self-antigens, including napsin A, that likely mediate effective antitumor T cell responses in NSCLC and may simultaneously underpin lung irAEs.- Published
- 2022
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32. Additive Manufacturing of Lithium Disilicate with the LCM Process for Classic and Non-Prep Veneers: Preliminary Technical and Clinical Case Experience.
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Unkovskiy A, Beuer F, Metin DS, Bomze D, Hey J, and Schmidt F
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Background: ceramic veneers, crowns, and other types of restorations are often made using either the press heating technique or the subtractive method. The advent of lithography-based ceramic manufacturing (LCM) allows for the manufacturing of such restorations in an additive way., Methods: this concept paper describes the first clinical experience in the application of LCM lithium disilicate restorations in vivo for the manufacturing of classic veneers for a patient with severe tooth wear. The applied restorations were analyzed in terms of their marginal fit in metrology software (Geomagic Control X, 3D Systems). Furthermore, the feasibility of 3D printing of non-prep veneers with a 0.1 mm thickness was tested., Results: the classic LCM lithium disilicate veneers were tried in the mouth cavity and demonstrated adequate esthetics and a sufficient marginal fit of 100 µm. Furthermore, the non-prep veneers with a 0.1 mm thickness could be successfully printed using LCM technology and also demonstrated an adequate fit on the model in vitro., Conclusions: the described technical approach of lithium disilicate 3D printing with LCM technology may pose a valid alternative to subtractive and analog manufacturing and be a game-changing option with the use of additive chairside ceramic fabrication.
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- 2022
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33. Severe cutaneous adverse reactions associated with systemic ivermectin: A pharmacovigilance analysis.
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Bomze D, Sprecher E, and Geller S
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- Cicatrix, Female, Humans, Ivermectin adverse effects, Male, Middle Aged, Pharmacovigilance, COVID-19, Stevens-Johnson Syndrome
- Abstract
Despite poor evidence, the antiparasitic ivermectin has been advocated as a potential COVID-19 therapy. This has led to a rise in calls to poison-control centers by people self-medicating with ivermectin, which is sold over the counter for veterinary uses. We aimed to investigate the association between severe cutaneous adverse reactions (SCARs) and ivermectin. Postmarketing data from the FDA Adverse Event Reporting System (FAERS), gathered between 2014 and 2021, was employed to detect disproportional signals of SCARs following systemic ivermectin therapy. The reporting odds ratio (ROR) was used to quantify the strength of association, while adjusting for age, sex, and region. The search yielded 517 reports of systemic ivermectin (median age 54 years, 46.8% female), of which 25 (4.8%), 81 (15.7%), and 411 (79.5%) were classified as SCARs, nonsevere cutaneous adverse events (AEs), or noncutaneous AEs, respectively. The regional distribution differed between SCAR reports (32.0% from Africa and 12.0% from North America) compared with other AEs, which originated from North America in over half of cases. The most common SCARs were toxic epidermal necrolysis (seven cases), Stevens-Johnson syndrome (seven cases), and drug reaction with eosinophilia and systemic symptoms (four cases). Five SCAR cases (20.0%) resulted in death and 12 (48.0%) lead to hospitalization. There was a strong safety signal for any SCAR (adjusted ROR 3.34, 95% confidence interval [CI] 2.17-5.12) and toxidermias (adjusted ROR 7.08, 95% CI 4.23-11.84). This study suggests that ivermectin is associated with SCARs on rare occasions. Dermatologists should be aware of this given the increase in ivermectin misuse., (© 2022 The Authors. The Journal of Dermatology published by John Wiley & Sons Australia, Ltd on behalf of Japanese Dermatological Association.)
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- 2022
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34. Trends in Women's Leadership of Oncology Clinical Trials.
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Waldhorn I, Dekel A, Morozov A, Alon ES, Stave D, Tsrooya NB, Schlosser S, Markel G, Bomze D, and Meirson T
- Abstract
It has been widely reported that women are underrepresented in leadership positions within academic medicine. This study aimed to assess trends in women representation as principal investigators (PIs) in oncology clinical trials and to characterize trends in women's leadership in such trials conducted between 1999 and 2019. The gender of 39,240 PIs leading clinical trials was determined using the gender prediction software Genderize.io. In total, 11,516 (27.7%) women served as PIs. Over the past 20 years, an annual increase of 0.65% in women PIs was observed. Analysis by geographic distribution revealed higher women representation among PIs in North America and Europe compared to Asia. Industry-funded trials were associated with lower women PI representation than academic-funded trials (31.4% vs. 18.8%, p<0.001). Also, women PIs were found to be underrepresented in late-phase as compared to early-phase studies (27.9%, 25.7%, 21.6%, and 22.4% in phase I, II, III, and IV, respectively; Cochran-Armitage test for trend, p<0.001). Furthermore, an association was found between the PI's gender and enrolment of female subjects (50% vs. 43% female participants led by women vs men PIs, respectively, p<0.001). Taken together, while the gender gap in women's leadership in oncology trials has been steadily closing, prominent inequalities remain in non-Western countries, advanced study phases, industry-funded trials and appear to be linked to a gender gap in patient accrual. These observations can serve for the development of strategies to increase women's representation and to monitor progress toward gender equality in PIs of cancer clinical trials., Competing Interests: AM was employed by Eyeviation, TM reports receiving personal fees from TyrNovo, outside the submitted work. GM reports receiving personal fees from MSD and Roche; grants and personal fees from BMS and Novartis; personal fees and stock options from 4C Biomed; and stock options from Nucleai, Biond Biologics, and Ella Therapeutics, outside the submitted work. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Waldhorn, Dekel, Morozov, Alon, Stave, Tsrooya, Schlosser, Markel, Bomze and Meirson.)
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- 2022
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35. Crossing survival curves of KEYNOTE-177 illustrate the rationale behind combining immune checkpoint inhibition with chemotherapy.
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Bomze D, Mutti L, Goldman A, Markel G, and Meirson T
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- Humans, Immune Checkpoint Inhibitors, Carcinoma, Non-Small-Cell Lung drug therapy, Lung Neoplasms drug therapy
- Abstract
Competing Interests: GM reports personal fees from Merck and Roche; grants and personal fees from Bristol Myers Squibb and Novartis; personal fees and stock options from 4C Biomed; and stock options from Nucleai, Biond Biologics, and Ella Therapeutics, outside the submitted work. TM reports personal fees from TyrNovo, outside of the submitted work. All other authors declare no competing interests.
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- 2022
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36. Point-of-care anti-CD19 CAR T-cells for treatment of relapsed and refractory aggressive B-cell lymphoma.
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Kedmi M, Shouval R, Fried S, Bomze D, Fein J, Cohen Z, Danilesko I, Shem-Tov N, Yerushalmi R, Jacoby E, Besser M, Shimoni A, Nagler A, and Avigdor A
- Subjects
- Adult, Antigens, CD19, Cytokine Release Syndrome etiology, Humans, Middle Aged, Point-of-Care Systems, T-Lymphocytes, Lymphoma, B-Cell therapy, Receptors, Chimeric Antigen therapeutic use
- Abstract
Anti CD19 chimeric antigen receptor (CAR) T-cell therapy has transformed the care of relapsed and refractory aggressive B-cell lymphoma. However, financial toxicity and manufacturing time represent barriers to its widespread implementation. Study applicability, toxicity, and efficacy of a locally produced autologous CD19-directed CAR T-cell product were studied. We performed a phase 1b/2 clinical trial with a point-of-care (POC) CAR T-cell product that contains a CD28 costimulatory domain. Adult patients with aggressive B-cell lymphoma or transformed low-grade lymphoma who received at least 2 prior regimens were eligible. A total of 73 patients, with a median age of 49 years, met inclusion criteria. CAR T-cell production time from apheresis was 10 days (interquartile range 10-11), negating the need for bridging chemotherapy. Overall and complete response rates were 62.5% and 37.5%. Median progression-free and overall survival were 3.7 and 12.1 months, respectively. Overall and progression-free survival at 12 months were 52.1% (confidence interval [CI]: 40.8%-66.5%) and 40% (CI: 30%-53.7%), respectively. Patients who achieved response had longer progression-free and overall survival. Grade 3-4 cytokine release syndrome was observed in 9.5% of the patients, and immune effector cell-associated neurotoxicity syndrome grade 3-4 in 21.9%. No deaths occurred due to CAR T-cell toxicity. Fifteen patients (20%) underwent allogeneic stem cell transplantation at a median time of 60 days after CAR T-cell therapy; 8 were alive at last follow-up. Of the 6 patients who underwent the transplantation in complete response 2 deceased because of toxicity. POC CAR T-cells are a feasible therapeutic option in aggressive B-cell lymphoma. They provide good efficacy while minimizing production time and the need for bridging therapy., (Copyright © 2022 The American Society for Transplantation and Cellular Therapy. Published by Elsevier Inc. All rights reserved.)
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- 2022
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37. The effect of a third-dose BNT162b2 vaccine on anti-SARS-CoV-2 antibody levels in immunosuppressed patients.
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Saiag E, Grupper A, Avivi I, Elkayam O, Ram R, Herishanu Y, Cohen Y, Perry C, Furer V, Katchman H, Rabinowich L, Ben-Yehoyada M, Halperin T, Baruch R, Goldshmidt H, Hagin D, Ben-Ami R, Sprecher E, and Bomze D
- Subjects
- Antibodies, Viral, BNT162 Vaccine, COVID-19 Vaccines, Humans, Prospective Studies, Vaccines, Synthetic, mRNA Vaccines, COVID-19 prevention & control, SARS-CoV-2
- Abstract
Objectives: The recent surge in coronavirus disease 2019 cases led to the consideration of a booster vaccine in previously vaccinated immunosuppressed individuals. However, the immunogenic effect of a third-dose severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccine in immunosuppressed patients is still unknown., Methods: This was an observational cohort study of 279 previously vaccinated immunosuppressed patients followed at a single tertiary hospital in Israel. Patients were administered a third dose of the Pfizer-BioNTech mRNA vaccine (BNT162b2) between July 14 and July 21, 2021. Levels of IgG antibodies against the spike receptor-binding domain of SARS-CoV-2 were measured 3 to 4 weeks after vaccination., Results: Of the cohort of 279 patients, 124 (44.4%) had haematologic malignancies, 57 (20.4%) had rheumatologic diseases, and 98 (35.1%) were solid organ-transplant recipients. Anti-SARS-CoV-2 antibody levels increased in 74.9% of cases. Across the entire cohort, the median absolute antibody levels (expressed in AU/mL) increased from 7 (interquartile range (IQR), 0.1-69) to 243 (IQR, 2-4749) after the booster dose. The response significantly varied across subgroups: The transplant cohort showed the greatest increase in absolute antibody levels (from 52 (IQR, 7.25-184.5) to 1824 (IQR, 161-9686)), followed by the rheumatology (from 22 (IQR, 1-106) to 1291 (IQR, 6-6231)) and haemato-oncology (from 1 (IQR, 0.1-7) to 7.5 (IQR, 0.1-407.5)) cohorts. The χ
2 test was 8.30 for difference in fold change (p = 0.016). Of the 193 patients who were seronegative at baseline, 76 became seropositive after vaccination, corresponding to a 39.4% (95% CI, 32.8%-46.4%) seroconversion rate. Transplant patients had the highest seroconversion rate (58.3% (95% CI, 44.3%-71.2%)), followed by rheumatology (44.1% (95% CI, 28.9%-60.5%)) and haemato-oncology (29.7% (95% CI, 22%-38.8%); χ2 = 11.87; p = 0.003) patients., Discussion: A third dose of BNT162b2 is immunogenic in most immunosuppressed individuals, although antibody response may differ based on the type of disease and immunosuppression. The antibody level that correlates with protection is still unknown; thus, future studies are needed to evaluate clinical outcomes., (Copyright © 2022 European Society of Clinical Microbiology and Infectious Diseases. Published by Elsevier Ltd. All rights reserved.)- Published
- 2022
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38. For and Against Routine Removal of Peripheral Intravenous Catheters.
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Meirson T, Goldman A, and Bomze D
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- Catheters, Catheters, Indwelling, Device Removal, Humans, Catheter-Related Infections, Catheterization, Peripheral
- Published
- 2022
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39. Cytoreductive Surgery for Relapsed Ovarian Cancer.
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Meirson T, Bomze D, and Markel G
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- Carcinoma, Ovarian Epithelial surgery, Humans, Neoplasm Recurrence, Local surgery, Cytoreduction Surgical Procedures, Ovarian Neoplasms surgery
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- 2022
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40. Comparison of 3 Randomized Clinical Trials of Frontline Therapies for Malignant Pleural Mesothelioma.
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Meirson T, Pentimalli F, Cerza F, Baglio G, Gray SG, Correale P, Krstic-Demonacos M, Markel G, Giordano A, Bomze D, and Mutti L
- Subjects
- Adult, Aged, Aged, 80 and over, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Cisplatin therapeutic use, Female, Humans, Male, Middle Aged, Pemetrexed therapeutic use, Randomized Controlled Trials as Topic, Young Adult, Mesothelioma drug therapy, Mesothelioma, Malignant drug therapy
- Abstract
Importance: Some recently proposed frontline therapies for malignant pleural mesothelioma (MPM) are very costly, yet their impact on quality of life and overall survival of these patients remains arguable. Given the high social toll of this aggressive occupational cancer, it is paramount to establish the real clinical benefit of these treatments., Objective: To directly compare and analyze the statistical robustness of the 3 randomized clinical trials (RCTs) of frontline therapies recommended for MPM since 2003., Design, Setting, and Participants: This comparative effectiveness study assessed the following phase 3 RCTs: the Mesothelioma Cisplatin Pemetrexed Study (MPS) of cisplatin plus pemetrexed vs cisplatin; the Mesothelioma Avastin Cisplatin Pemetrexed Study (MAPS) of cisplatin plus pemetrexed plus bevacizumab vs cisplatin plus pemetrexed; and the CheckMate743 (CM743) study of nivolumab plus ipilimumab vs cisplatin plus pemetrexed. Data collection dates for the RCTs ranged from April 1999 to April 2018. Data for this study were analyzed from February to October 2021., Main Outcomes and Measures: Patient selection criteria, superiority of the intervention groups, survival-inferred fragility index, and censoring patterns in each RCT., Results: A total of 1501 patients were included in the analysis (1170 men [77.9%]; range of median age for treatment groups, 60 [IQR, 19-84] to 69 [IQR, 65-75] years). A virtual comparison of overall survival in MAPS vs the CM743 study showed no statistically significant difference (hazard ratio [HR], 0.97 [95% CI, 0.79-1.20]; P = .79), and the survival-inferred fragility index in the intention-to-treat (ITT) populations was as low as 0.22% of the total sample size in MPS, -0.45% of the total sample size in MAPS, and 0.99% of the total sample size in the CM743 trial. Moreover, reverse restricted mean survival time (RMST) analysis of overall survival using RMST-difference (RMST-D) demonstrated differential censoring in the ITT population of the CM743 trial favoring the control group (0.56 [95% CI, 0.18-0.94]; P = .004) and in the nonepithelioid group (reverse RMST-D, 0.90 [95% CI, 0.001-1.79]; P = .048)., Conclusions and Relevance: This comparative effectiveness study found no survival benefit in the CM743 trial over MAPS, despite the inclusion of patients with worse prognosis in the latter trial. Moreover, the statistical conclusions of all the examined trials were shown to be extremely fragile, and the findings of differential censoring in the CM743 trial and in the ITT nonepithelial subset raised additional areas of concern. These findings suggest that selection criteria, fragility, and censoring patterns may affect the original conclusions drawn for the respective trials, casting a shadow on the real benefit. This model of analysis lays a rigorous groundwork extendable to trials of all cancer treatments before their registration.
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- 2022
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41. Origins of bloodstream infections following fecal microbiota transplantation: a strain-level analysis.
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Eshel A, Sharon I, Nagler A, Bomze D, Danylesko I, Fein JA, Geva M, Henig I, Shimoni A, Zuckerman T, Youngster I, Koren O, and Shouval R
- Subjects
- Fecal Microbiota Transplantation, Humans, Immunocompromised Host, Bacteremia etiology, Graft vs Host Disease, Microbiota
- Abstract
We observed high rates of bloodstream infections (BSIs) following fecal microbiota transplantation (FMT) for graft-versus-host-disease (33 events in 22 patients). To trace the BSIs' origin, we applied a metagenomic bioinformatic pipeline screening donor and recipient stool samples for bacteremia-causing strains in 13 cases. Offending strains were not detected in FMT donations. Enterococcus faecium, Escherichia coli, Pseudomonas aeruginosa, and Acinetobacter baumannii could be detected in stool samples before emerging in the blood. In this largest report of BSIs post-FMT, we present an approach that may be applicable for evaluating BSI origin following microbiota-based interventions. Our findings support FMT safety in immunocompromised patients but do not rule out FMT as an inducer of bacterial translocation., (© 2022 by The American Society of Hematology. Licensed under Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0), permitting only noncommercial, nonderivative use with attribution. All other rights reserved.)
- Published
- 2022
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42. Ocular Adverse Events Induced by Immune Checkpoint Inhibitors: A Comprehensive Pharmacovigilance Analysis.
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Bomze D, Meirson T, Hasan Ali O, Goldman A, Flatz L, and Habot-Wilner Z
- Subjects
- Databases, Factual, Humans, Immunotherapy adverse effects, Pharmacovigilance, Retrospective Studies, Immune Checkpoint Inhibitors adverse effects, Neoplasms drug therapy
- Abstract
Purpose: Characterize ocular adverse events (oAEs) caused by immune checkpoint inhibitors (ICIs)., Methods: Retrospective analysis of 41,674 cancer patients in the FDA Adverse Event Reporting System (FAERS) pharmacovigilance database receiving anti-PD-1/PD-L1, anti-CTLA-4, or anti-PD-1+ anti-CTLA-4 combination. Reporting odds ratio (ROR) was used to approximate oAE rate across regimens and indications., Results: The most common indications were lung cancer (27.3%) and melanoma (22.7%); 76.3% received anti-PD-1/PD-L1 monotherapy. 1,268 patients (3.0%) reported oAEs, namely vision disorders (30.8%), uveitis (15.1%), and retinal, lacrimal, and optic nerve disorders (10.7%, 9.0%, 8.4%). Melanoma showed the highest proportion of uveitis (117/9,471 cases; 1.2%). Addition of anti-CTLA-4 to anti-PD-1 increased the ROR of uveitis from 4.77 (95% CI 3.83-5.94) to 17.1 (95% CI 12.9-22.7). Among anti-PD-1/PD-L1 cases, uveitis was differentially reported in melanoma (ROR 14.7, 95% CI 10.7-20.2) compared with lung cancer (ROR 2.67, 95% CI 1.68-4.23)., Conclusion: ICI-induced oAEs are rare, and uveitis is significantly associated with melanoma and anti-PD-1+ anti-CTLA-4 combination.
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- 2022
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43. Radiographic progression-free survival in the ACIS trial for prostate cancer.
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Gilboa S, Bomze D, Markel G, and Meirson T
- Subjects
- Humans, Male, Progression-Free Survival, Prostatic Neoplasms, Castration-Resistant
- Abstract
Competing Interests: We declare no competing interests.
- Published
- 2022
- Full Text
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44. Immunogenicity of a BNT162b2 vaccine booster in health-care workers.
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Saiag E, Goldshmidt H, Sprecher E, Ben-Ami R, and Bomze D
- Subjects
- COVID-19 Vaccines therapeutic use, Humans, SARS-CoV-2, BNT162 Vaccine, Vaccines
- Abstract
Competing Interests: We declare no competing interests.
- Published
- 2021
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45. The quest for optimal and reliable guidelines based on robust evidence for the treatment of cholangiocarcinoma.
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Azoulay D, Bomze D, and Meirson T
- Abstract
Competing Interests: Conflicts of Interest: All authors have completed the ICMJE uniform disclosure form (available at https://dx.doi.org/10.21037/hbsn-21-117). The authors have no conflicts of interest to declare.
- Published
- 2021
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46. Primary Cutaneous B-Cell Lymphomas in Children and Adolescents: A SEER Population-Based Study.
- Author
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Bomze D, Sprecher E, Goldberg I, Samuelov L, and Geller S
- Subjects
- Adolescent, Adult, Child, Female, Humans, Male, Prognosis, Retrospective Studies, Young Adult, Lymphoma, B-Cell, Marginal Zone pathology, Lymphoma, Follicular, Skin Neoplasms diagnosis
- Abstract
Background: Although primary cutaneous B-cell lymphomas (PCBCL) comprise 25% of all cutaneous lymphomas, their incidence in the pediatric population is unknown, and the information on pediatric PCBCL has mostly been gathered from individual case reports or series from single centers., Patients and Methods: This was a population-based, retrospective cohort study of patients in 18 cancer registries in the United States diagnosed between 2000 to 2016 through the Surveillance, Epidemiology, and End Results (SEER) program. Age-adjusted incidence rates were calculated for PCBCL in pediatric (<20 years) and adult (≥20 years) populations. Demographic, clinical, and pathological characteristics of PCBCL were compared between the two groups., Results: A total of 48 pediatric and 5128 adult PCBCL cases were included. Median age at diagnosis was 16.5 years and 65 years in the two groups, respectively. The major histologic subtypes of pediatric cases were marginal zone lymphoma (77.1%), followed by diffuse large B-cell lymphoma (12.5%) and follicle center lymphoma (10.4%), which were equally distributed in adults. The age-adjusted pediatric PCBCL incidence rate (per 1,000,000 person-years) was 0.12 (95% CI 0.09-0.16). The incidence in the adult population was approximately 40-fold higher than the one observed in the pediatric group (IRR 41.4, 95% CI 31.2-56.2). All 48 pediatric cases were alive during a median follow-up time of 48 months., Conclusions: Pediatric PCBCL is a very rare disease affecting mostly adolescents of both sexes. The major histologic subtype is marginal zone lymphoma, and the prognosis is favorable., Competing Interests: Disclosure The authors report no conflict of interest., (Copyright © 2021 Elsevier Ltd. All rights reserved.)
- Published
- 2021
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47. Comment on "ALPPS Improves Survival Compared With TSH in Patients Affected of CRLM. Survival Analysis From the Randomized Controlled Trial LIGRO" by K. Hasselgren, et al., Annals of Surgery 2020 The Jury is Still Out.
- Author
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Bomze D, Markel G, Meirson T, and Azoulay D
- Subjects
- Humans, Survival Analysis, Thyrotropin, Hepatectomy, Portal Vein
- Abstract
Competing Interests: The authors have no conflicts of interest to disclose.
- Published
- 2021
- Full Text
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48. Keratinocyte differentiation antigen-specific T cells in immune checkpoint inhibitor-treated NSCLC patients are associated with improved survival.
- Author
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Berner F, Niederer R, Luimstra JJ, Pop OT, Jochum AK, Purde MT, Hasan Ali O, Bomze D, Bauer J, Freudenmann LK, Marcu A, Wolfschmitt EM, Haen S, Gross T, Dubbelaar ML, Abdou MT, Baumgaertner P, Appenzeller C, Cicin-Sain C, Lenz T, Speiser DE, Ludewig B, Driessen C, Jörger M, Früh M, Jochum W, Cozzio A, Rammensee HG, Walz J, Neefjes J, and Flatz L
- Subjects
- Antigens, Differentiation therapeutic use, Humans, Immune Checkpoint Inhibitors, Keratinocytes, Carcinoma, Non-Small-Cell Lung drug therapy, Lung Neoplasms drug therapy
- Abstract
Immune checkpoint inhibitors (ICIs) have improved the survival of patients with non-small cell lung cancer (NSCLC) by reinvigorating tumor-specific T cell responses. However, the specificity of such T cells and the human leukocyte antigen (HLA)-associated epitopes recognized, remain elusive. In this study, we identified NSCLC T cell epitopes of recently described NSCLC-associated antigens, termed keratinocyte differentiation antigens. Epitopes of these antigens were presented by HLA-A 03:01 and HLA-C 04:01 and were associated with responses to ICI therapy. Patients with CD8
+ T cell responses to these epitopes had improved overall and progression-free survival. T cells specific for such epitopes could eliminate HLA class I-matched NSCLC cells ex vivo and were enriched in patient lung tumors. The identification of novel lung cancer HLA-associated epitopes that correlate with improved ICI-dependent treatment outcomes suggests that keratinocyte-specific proteins are important tumor-associated antigens in NSCLC. These findings improve our understanding of the mechanisms of ICI therapy and may help support the development of vaccination strategies to improve ICI-based treatment of these tumors., Competing Interests: No potential conflict of interest was reported by the author(s)., (© 2021 The Author(s). Published with license by Taylor & Francis Group, LLC.)- Published
- 2021
- Full Text
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49. Subcutaneous REGEN-COV Antibody Combination to Prevent Covid-19.
- Author
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Merison T, Goldman A, and Bomze D
- Subjects
- Antibodies, Monoclonal, Humans, SARS-CoV-2, COVID-19
- Published
- 2021
- Full Text
- View/download PDF
50. Severe Coronavirus Disease 2019 (COVID-19) is Associated With Elevated Serum Immunoglobulin (Ig) A and Antiphospholipid IgA Antibodies.
- Author
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Hasan Ali O, Bomze D, Risch L, Brugger SD, Paprotny M, Weber M, Thiel S, Kern L, Albrich WC, Kohler P, Kahlert CR, Vernazza P, Bühler PK, Schüpbach RA, Gómez-Mejia A, Popa AM, Bergthaler A, Penninger JM, and Flatz L
- Subjects
- Antibodies, Antiphospholipid, Humans, Immunoglobulin A, Retrospective Studies, SARS-CoV-2, COVID-19
- Abstract
Background: Severe coronavirus disease 2019 (COVID-19) frequently entails complications that bear similarities to autoimmune diseases. To date, there are little data on possible immunoglobulin (Ig) A-mediated autoimmune responses. Here, we aim to determine whether COVID-19 is associated with a vigorous total IgA response and whether IgA antibodies are associated with complications of severe illness. Since thrombotic events are frequent in severe COVID-19 and resemble hypercoagulation of antiphospholipid syndrome, our approach focused on antiphospholipid antibodies (aPL)., Methods: In this retrospective cohort study, clinical data and aPL from 64 patients with COVID-19 were compared from 3 independent tertiary hospitals (1 in Liechtenstein, 2 in Switzerland). Samples were collected from 9 April to 1 May 2020., Results: Clinical records of 64 patients with COVID-19 were reviewed and divided into a cohort with mild illness (mCOVID; 41%), a discovery cohort with severe illness (sdCOVID; 22%) and a confirmation cohort with severe illness (scCOVID; 38%). Total IgA, IgG, and aPL were measured with clinical diagnostic kits. Severe illness was significantly associated with increased total IgA (sdCOVID, P = .01; scCOVID, P < .001), but not total IgG. Among aPL, both cohorts with severe illness significantly correlated with elevated anticardiolipin IgA (sdCOVID and scCOVID, P < .001), anticardiolipin IgM (sdCOVID, P = .003; scCOVID, P< .001), and anti-beta 2 glycoprotein-1 IgA (sdCOVID and scCOVID, P< .001). Systemic lupus erythematosus was excluded from all patients as a potential confounder., Conclusions: Higher total IgA and IgA-aPL were consistently associated with severe illness. These novel data strongly suggest that a vigorous antiviral IgA response, possibly triggered in the bronchial mucosa, induces systemic autoimmunity., (© The Author(s) 2020. Published by Oxford University Press for the Infectious Diseases Society of America. All rights reserved. For permissions, e-mail: journals.permissions@oup.com.)
- Published
- 2021
- Full Text
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