3 results on '"Georgios Karakatsoulis"'
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2. Evidence of somatic hypermutation in the antigen binding sites of patients with CLL harboring IGHV genes with 100% germline identity
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Electra Sofou, Laura Zaragoza-Infante, Nikolaos Pechlivanis, Georgios Karakatsoulis, Sofia Notopoulou, Niki Stavroyianni, Fotis Psomopoulos, Elisavet Georgiou, Anne Langlois de Septenville, Frederic Davi, Andreas Agathangelidis, Anastasia Chatzidimitriou, and Kostas Stamatopoulos
- Subjects
Cancer Research ,Oncology - Abstract
Classification of patients with chronic lymphocytic leukemia (CLL) based on the somatic hypermutation (SHM) status of the clonotypic immunoglobulin heavy variable (IGHV) gene has established predictive and prognostic relevance. The SHM status is assessed based on the number of mutations within the IG heavy variable domain sequence, albeit only over the rearranged IGHV gene excluding the variable heavy complementarity determining region 3 (VH CDR3). This may lead to an underestimation of the actual impact of SHM, in fact overlooking the most critical region for antigen-antibody interactions, i.e. the VH CDR3. Here we investigated whether SHM may be present within the VH CDR3 of cases bearing ‘truly unmutated’ IGHV genes (i.e. 100% germline identity across VH FR1-VH FR3) employing Next Generation Sequencing. We studied 16 patients bearing a ‘truly unmutated’ CLL clone assigned to stereotyped subsets #1 (n=12) and #6 (n=4). We report the existence of SHM within the germline-encoded 3’IGHV, IGHD, 5’IGHJ regions of the VH CDR3 in both the main IGHV-IGHD-IGHJ gene clonotype and its variants. Recurrent somatic mutations were identified between different patients of the same subset, supporting the notion that they represent true mutational events rather than technical artefacts; moreover, they were located adjacent to/within AID hotspots, pointing to SHM as the underlying mechanism. In conclusion, we provide immunogenetic evidence for intra-VH CDR3 variations, attributed to SHM, in CLL patients carrying ‘truly unmutated’ IGHV genes. Although the clinical implications of this observation remain to be defined, our findings offer a new perspective into the immunobiology of CLL, alluding to the operation of VH CDR3-restricted SHM in U-CLL.
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- 2022
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3. COVID-19 severity and mortality in patients with CLL: an update of the international ERIC and Campus CLL study
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Ellen van der Spek, Emili Montserrat, Talha Munir, Paolo Ghia, Shaimaa El-Ashwah, Andreas Glenthøj, Viola Maria Popov, Sanne H. Tonino, Ann Janssens, Michel van Gelder, Lara Malerba, Rocío García-Serra, Alberto Lopez-Garcia, Juan-Gonzalo Correa, Christos Demosthenous, Idanna Innocenti, Maria Papaioannou, Lydia Scarfò, Antonio Cuneo, Francesca Romana Mauro, Sabina Kersting, Robin Foà, David Donaldson, Livio Trentin, Roberta Murru, Panagiotis Baliakas, Marina Motta, Deepesh Lad, Yervand K Hakobyan, Paolo Sportoletti, Lucrecia Yáñez San Segundo, Alicia Enrico, Elżbieta Kalicińska, Ewa Wasik-Szczepanek, Martin Spacek, Tamar Tadmor, Enrico Lista, Roel van Kampen, Lorella Orsucci, Michael Doubek, Yair Herishanu, Blanca Espinet, Jose Angel Hernandez-Rivas, Inga Piskunova, Ozren Jakšić, Georgios Karakatsoulis, Tomasz Wróbel, Oana Stanca, Luca Laurenti, Martin Andres, Roberto Marasca, Mark-David Levin, Giovanni Del Poeta, Miguel Arturo Pavlovsky, Maria Dimou, Monia Marchetti, Ivana Milosevic, Gianluigi Reda, Tobias Herold, David Allsup, Raul Cordoba, Andrea Visentin, Maria Gomes da Silva, Angela Ferrari, Antonella Capasso, Juan Marquet, Francesca Maria Quaglia, Candida Vitale, Mattias Mattsson, Marta Coscia, Moritz Fürstenau, Lucia Farina, Niki Stavroyianni, Marta Morawska, Arnon P. Kater, Mónica Baile, Gevorg Saghumyan, Carolina Cuéllar-García, Jacopo Olivieri, Darko Antic, Raquel Nunes Rodrigues, Alejandro Alonso Cabrero, Henrik Frederiksen, Alessandro Rambaldi, Marzia Varettoni, Amit Shrestha, Оlga B Kalashnikova, Thomas Chatzikonstantinou, José A. García-Marco, Martin Simkovic, Linda Katharina Karlsson, Odit Gutwein, Mohamed A. Yassin, Rosa Ruchlemer, Eva Gimeno, Kristian Qvist, Fatima Miras, Gilad Itchaki, Maria Rosaria De Paolis, Maria Efstathopoulou, Doreen te Raa, Barbara Eichhorst, Dominique Bron, Jorge Labrador, Gian Matteo Rigolin, Myriam Foglietta, Massimo Gentile, Sofia Chatzileontiadou, Carsten Utoft Niemann, Anargyros Kapetanakis, Kostas Stamatopoulos, Lorenzo De Paoli, Giulia Quaresmini, RS: GROW - R3 - Innovative Cancer Diagnostics & Therapy, Interne Geneeskunde, MUMC+: MA Hematologie (9), Chatzikonstantinou, T., Kapetanakis, A., Scarfo, L., Karakatsoulis, G., Allsup, D., Cabrero, A. A., Andres, M., Antic, D., Baile, M., Baliakas, P., Bron, D., Capasso, A., Chatzileontiadou, S., Cordoba, R., Correa, J. -G., Cuellar-Garcia, C., De Paoli, L., De Paolis, M. R., Del Poeta, G., Demosthenous, C., Dimou, M., Donaldson, D., Doubek, M., Efstathopoulou, M., Eichhorst, B., El-Ashwah, S., Enrico, A., Espinet, B., Farina, L., Ferrari, A., Foglietta, M., Frederiksen, H., Furstenau, M., Garcia-Marco, J. A., Garcia-Serra, R., Gentile, M., Gimeno, E., Glenthoj, A., Gomes da Silva, M., Gutwein, O., Hakobyan, Y. K., Herishanu, Y., Hernandez-Rivas, J. A., Herold, T., Innocenti, I., Itchaki, G., Jaksic, O., Janssens, A., Kalashnikova, Оb., Kalicinska, E., Karlsson, L. K., Kater, A. P., Kersting, S., Labrador, J., Lad, D., Laurenti, L., Levin, M. -D., Lista, E., Lopez-Garcia, A., Malerba, L., Marasca, R., Marchetti, M., Marquet, J., Mattsson, M., Mauro, F. R., Milosevic, I., Miras, F., Morawska, M., Motta, M., Munir, T., Murru, R., Niemann, C. U., Rodrigues, R. N., Olivieri, J., Orsucci, L., Papaioannou, M., Pavlovsky, M. A., Piskunova, I., Popov, V. M., Quaglia, F. M., Quaresmini, G., Qvist, K., Reda, G., Rigolin, G. M., Ruchlemer, R., Saghumyan, G., Shrestha, A., Simkovic, M., Spacek, M., Sportoletti, P., Stanca, O., Stavroyianni, N., Tadmor, T., Te Raa, D., Tonino, S. H., Trentin, L., Van Der Spek, E., van Gelder, M., van Kampen, R., Varettoni, M., Visentin, A., Vitale, C., Wasik-Szczepanek, E., Wrobel, T., San Segundo, L. Y., Yassin, M., Coscia, M., Rambaldi, A., Montserrat, E., Foa, R., Cuneo, A., Stamatopoulos, K., Ghia, P., Experimental Immunology, Clinical Haematology, AII - Cancer immunology, and CCA - Cancer Treatment and Quality of Life
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Chronic lymphocytic leukaemia ,Cancer Research ,medicine.medical_specialty ,COVID-19 Vaccines ,Coronavirus disease 2019 (COVID-19) ,Epidemiology ,medicine.medical_treatment ,Chronic lymphocytic leukemia ,CLL, COVID-19 ,610 Medicine & health ,Disease ,Lower risk ,COVID-19 (Malaltia) ,Severity of Illness Index ,Article ,NO ,law.invention ,Risk Factors ,law ,Internal medicine ,Case fatality rate ,Mortalitat ,medicine ,Humans ,Hematologi ,Chronic ,Mortality ,Science & Technology ,Leukemia ,SARS-CoV-2 ,business.industry ,Vaccination ,B-Cell ,Leucèmia ,COVID-19 ,Immunosuppression ,Hematology ,Prognosis ,medicine.disease ,Leukemia, Lymphocytic, Chronic, B-Cell ,Survival Analysis ,Intensive care unit ,Lymphocytic ,Oncology ,business ,Life Sciences & Biomedicine - Abstract
Patients with chronic lymphocytic leukemia (CLL) may be more susceptible to Coronavirus disease 2019 (COVID-19) due to age, disease, and treatment-related immunosuppression. We aimed to assess risk factors of outcome and elucidate the impact of CLL-directed treatments on the course of COVID-19. We conducted a retrospective, international study, collectively including 941 patients with CLL and confirmed COVID-19. Data from the beginning of the pandemic until March 16, 2021, were collected from 91 centers. The risk factors of case fatality rate (CFR), disease severity, and overall survival (OS) were investigated. OS analysis was restricted to patients with severe COVID-19 (definition: hospitalization with need of oxygen or admission into an intensive care unit). CFR in patients with severe COVID-19 was 38.4%. OS was inferior for patients in all treatment categories compared to untreated (p
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- 2021
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