1. Impact of microsatellite status in early-onset colonic cancer.
- Author
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Zaborowski, Alexandra M, Adamina, Ahmed Abdile Michel, Aigner, Felix, d'Allens, Laura, Allmer, Caterina, Álvarez, Andrea, Anula, Rocio, Andric, Mihailo, Bach, Sam Atallah Simon, Bala, Miklosh, Barussaud, Marie, Bausys, Augustinas, Beggs, Andrew, Bellolio, Felipe, Bennett, Melissa-Rose, Berdinskikh, Anton, Bevan, Vicki, Biondo, Sebastiano, Bislenghi, Gabriele, Bludau, Marc, Brouwer, Nelleke, Brown, Carl, Bruns, Christiane, Buchanan, Daniel D, Buchwald, Pamela, Burger, Jacobus WA, Burlov, Nikita, Campanelli, Michela, Capdepont, Maylis, Carvello, Michele, Chew, Hwee-Hoon, Christoforidis, Dimitri, Clark, David, Climent, Marta, Collinson, Rowan, Cologne, Kyle G, Contreras, Tomas, Croner, Roland, Daniels, Ian R, Dapri, Giovanni, Davies, Justin, Delrio, Paolo, Denost, Quentin, Deutsch, Michael, Dias, Andre, D’Hoore, André, Drozdov, Evgeniy, Duek, Daniel, Dunlop, Malcolm, Dziki, Adam, Edmundson, Aleksandra, Efetov, Sergey, El-Hussuna, Alaa, Elliot, Brodie, Emile, Sameh, Espin, Eloy, Evans, Martyn, Faes, Seraina, Faiz, Omar, Figueiredo, Nuno, Fleming, Fergal, Foppa, Caterina, Fowler, George, Frasson, Matteo, Forgan, Tim, Frizelle, Frank, Gadaev, Shamil, Gellona, Jose, Glyn, Tamara, Goran, Barisic, Greenwood, Emma, Guren, Marianne G, Guillon, Stephanie, Gutlic, Ida, Hahnloser, Dieter, Hampel, Heather, Hanly, Ann, Hasegawa, Hirotoshi, Iversen, Lene Hjerrild, Hill, Andrew, Hill, James, Hoch, Jiri, Hompes, Roel, Hurtado, Luis, Iaquinandi, Fabiano, Imbrasaite, Ugne, Islam, Rumana, Jafari, Mehrenah D, Salido, Andrea Jiménez, Jiménez-Toscano, Marta, Kanemitsu, Yukihide, Karachun, Aleksei, Karimuddin, Ahmer A, Keller, Deborah S, Kelly, Justin, Kennelly, Rory, Khrykov, Gleb, Kocian, Peter, Koh, Cherry, and Kok, Neils
- Subjects
Biomedical and Clinical Sciences ,Oncology and Carcinogenesis ,Cancer ,Genetic Testing ,Digestive Diseases ,Genetics ,Clinical Research ,Colo-Rectal Cancer ,Aetiology ,2.1 Biological and endogenous factors ,Colonic Neoplasms ,Colorectal Neoplasms ,Humans ,Microsatellite Instability ,Microsatellite Repeats ,Mutation ,Prognosis ,Proto-Oncogene Proteins B-raf ,Proto-Oncogene Proteins p21(ras) ,REACCT Collaborative ,Medical and Health Sciences ,Surgery ,Clinical sciences - Abstract
BackgroundThe molecular profile of early-onset colonic cancer is undefined. This study evaluated clinicopathological features and oncological outcomes of young patients with colonic cancer according to microsatellite status.MethodsAnonymized data from an international collaboration were analysed. Criteria for inclusion were patients younger than 50 years diagnosed with stage I-III colonic cancer that was surgically resected. Clinicopathological features, microsatellite status, and disease-specific outcomes were evaluated.ResultsA total of 650 patients fulfilled the criteria for inclusion. Microsatellite instability (MSI) was identified in 170 (26.2 per cent), whereas 480 had microsatellite-stable (MSS) tumours (relative risk of MSI 2.5 compared with older patients). MSI was associated with a family history of colorectal cancer and lesions in the proximal colon. The proportions with pathological node-positive disease (45.9 versus 45.6 per cent; P = 1.000) and tumour budding (20.3 versus 20.5 per cent; P = 1.000) were similar in the two groups. Patients with MSI tumours were more likely to have BRAF (22.5 versus 6.9 per cent; P < 0.001) and KRAS (40.0 versus 24.2 per cent; P = 0.006) mutations, and a hereditary cancer syndrome (30.0 versus 5.0 per cent; P < 0.001; relative risk 6). Five-year disease-free survival rates in the MSI group were 95.0, 92.0, and 80.0 per cent for patients with stage I, II, and III tumours, compared with 88.0, 88.0, and 65.0 per cent in the MSS group (P = 0.753, P = 0.487, and P = 0.105 respectively).ConclusionPatients with early-onset colonic cancer have a high risk of MSI and defined genetic conditions. Those with MSI tumours have more adverse pathology (budding, KRAS/BRAF mutations, and nodal metastases) than older patients with MSI cancers.
- Published
- 2022