1. Colorectal cancer incidences in Lynch syndrome: a comparison of results from the prospective lynch syndrome database and the international mismatch repair consortium
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Pål Møller, Toni Seppälä, James G. Dowty, Saskia Haupt, Mev Dominguez-Valentin, Lone Sunde, Inge Bernstein, Christoph Engel, Stefan Aretz, Maartje Nielsen, Gabriel Capella, Dafydd Gareth Evans, John Burn, Elke Holinski-Feder, Lucio Bertario, Bernardo Bonanni, Annika Lindblom, Zohar Levi, Finlay Macrae, Ingrid Winship, John-Paul Plazzer, Rolf Sijmons, Luigi Laghi, Adriana Della Valle, Karl Heinimann, Elizabeth Half, Francisco Lopez-Koestner, Karin Alvarez-Valenzuela, Rodney J. Scott, Lior Katz, Ido Laish, Elez Vainer, Carlos Alberto Vaccaro, Dirce Maria Carraro, Nathan Gluck, Naim Abu-Freha, Aine Stakelum, Rory Kennelly, Des Winter, Benedito Mauro Rossi, Marc Greenblatt, Mabel Bohorquez, Harsh Sheth, Maria Grazia Tibiletti, Leonardo S. Lino-Silva, Karoline Horisberger, Carmen Portenkirchner, Ivana Nascimento, Norma Teresa Rossi, Leandro Apolinário da Silva, Huw Thomas, Attila Zaránd, Jukka-Pekka Mecklin, Kirsi Pylvänäinen, Laura Renkonen-Sinisalo, Anna Lepisto, Päivi Peltomäki, Christina Therkildsen, Lars Joachim Lindberg, Ole Thorlacius-Ussing, Magnus von Knebel Doeberitz, Markus Loeffler, Nils Rahner, Verena Steinke-Lange, Wolff Schmiegel, Deepak Vangala, Claudia Perne, Robert Hüneburg, Aída Falcón de Vargas, Andrew Latchford, Anne-Marie Gerdes, Ann-Sofie Backman, Carmen Guillén-Ponce, Carrie Snyder, Charlotte K. Lautrup, David Amor, Edenir Palmero, Elena Stoffel, Floor Duijkers, Michael J. Hall, Heather Hampel, Heinric Williams, Henrik Okkels, Jan Lubiński, Jeanette Reece, Joanne Ngeow, Jose G. Guillem, Julie Arnold, Karin Wadt, Kevin Monahan, Leigha Senter, Lene J. Rasmussen, Liselotte P. van Hest, Luigi Ricciardiello, Maija R. J. Kohonen-Corish, Marjolijn J. L. Ligtenberg, Melissa Southey, Melyssa Aronson, Mohd N. Zahary, N. Jewel Samadder, Nicola Poplawski, Nicoline Hoogerbrugge, Patrick J. Morrison, Paul James, Grant Lee, Rakefet Chen-Shtoyerman, Ravindran Ankathil, Rish Pai, Robyn Ward, Susan Parry, Tadeusz Dębniak, Thomas John, Thomas van Overeem Hansen, Trinidad Caldés, Tatsuro Yamaguchi, Verónica Barca-Tierno, Pilar Garre, Giulia Martina Cavestro, Jürgen Weitz, Silke Redler, Reinhard Büttner, Vincent Heuveline, John L. Hopper, Aung Ko Win, Noralane Lindor, Steven Gallinger, Loïc Le Marchand, Polly A. Newcomb, Jane Figueiredo, Daniel D. Buchanan, Stephen N. Thibodeau, Sanne W. ten Broeke, Eivind Hovig, Sigve Nakken, Marta Pineda, Nuria Dueñas, Joan Brunet, Kate Green, Fiona Lalloo, Katie Newton, Emma J. Crosbie, Miriam Mints, Douglas Tjandra, Florencia Neffa, Patricia Esperon, Revital Kariv, Guy Rosner, Walter Hernán Pavicic, Pablo Kalfayan, Giovana Tardin Torrezan, Thiago Bassaneze, Claudia Martin, Gabriela Moslein, Aysel Ahadova, Matthias Kloor, Julian R. Sampson, Mark A. Jenkins, and The European Hereditary Tumour Group (EHTG) and the International Mismatch Repair Consortium (IMRC)
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Lynch Syndrome ,Epidemiology ,Prevention ,Penetrance ,Colorectal cancer ,Segregation analysis ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 ,Genetics ,QH426-470 - Abstract
Abstract Objective To compare colorectal cancer (CRC) incidences in carriers of pathogenic variants of the MMR genes in the PLSD and IMRC cohorts, of which only the former included mandatory colonoscopy surveillance for all participants. Methods CRC incidences were calculated in an intervention group comprising a cohort of confirmed carriers of pathogenic or likely pathogenic variants in mismatch repair genes (path_MMR) followed prospectively by the Prospective Lynch Syndrome Database (PLSD). All had colonoscopy surveillance, with polypectomy when polyps were identified. Comparison was made with a retrospective cohort reported by the International Mismatch Repair Consortium (IMRC). This comprised confirmed and inferred path_MMR carriers who were first- or second-degree relatives of Lynch syndrome probands. Results In the PLSD, 8,153 subjects had follow-up colonoscopy surveillance for a total of 67,604 years and 578 carriers had CRC diagnosed. Average cumulative incidences of CRC in path_MLH1 carriers at 70 years of age were 52% in males and 41% in females; for path_MSH2 50% and 39%; for path_MSH6 13% and 17% and for path_PMS2 11% and 8%. In contrast, in the IMRC cohort, corresponding cumulative incidences were 40% and 27%; 34% and 23%; 16% and 8% and 7% and 6%. Comparing just the European carriers in the two series gave similar findings. Numbers in the PLSD series did not allow comparisons of carriers from other continents separately. Cumulative incidences at 25 years were < 1% in all retrospective groups. Conclusions Prospectively observed CRC incidences (PLSD) in path_MLH1 and path_MSH2 carriers undergoing colonoscopy surveillance and polypectomy were higher than in the retrospective (IMRC) series, and were not reduced in path_MSH6 carriers. These findings were the opposite to those expected. CRC point incidence before 50 years of age was reduced in path_PMS2 carriers subjected to colonoscopy, but not significantly so.
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- 2022
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