Alejandro Martínez-Roca, Joaquín Cubiella, Anabel García-Heredia, David Guill-Berbegal, Sandra Baile-Maxía, Carolina Mangas-Sanjuán, Noelia Sala-Miquel, Lucía Madero-Velazquez, Cristina Alenda, Pedro Zapater, Clara González-Núñez, Agueda Iglesias-Gómez, Laura Codesido-Prado, Astrid Díez-Martín, Michal F Kaminski, Rune Erichsen, Hans-Olov Adami, Monika Ferlitsch, María Pellisé, Øyvind Holme, Evelien Dekker, Michael Bretthauer, Rodrigo Jover
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引用次数: 0
Abstract
Background: The potential of molecular markers in the removed polys as reliable predictors of metachronous lesions is still uncertain.
Aim: Our aim was to evaluate the role of somatic mutations in KRAS in polyps of patients with high-risk adenomas to predict the risk of advanced polyps or colorectal cancer (CRC) within 3 years.
Methods: A total of 518 patients were prospectively enrolled. The included patients had adenomas ≥10 mm, high-grade dysplasia, villous component or ≥3 more adenomas at baseline and were scheduled to undergo surveillance colonoscopy at 3 years ± 6 months. Somatic KRAS mutation was performed on 1189 polyps collected from these patients. At surveillance, advanced lesions were defined as adenomas with a size of ≥10 mm. High-grade dysplasia or villous component, serrated polyps ≥10 mm or with dysplasia or CRC.
Results: At baseline, 81 patients (15.6%) had KRAS mutations in at least one polyp. Patients with KRAS mutated polyps had more frequent villous histological lesions and size ≥20 mm. In the multivariate analysis, adjusted for age and sex, only age (odds ratios [OR], 1.06; 95% confidence interval [CI], 1.02-1.09; p < 0.001), ≥5 adenomas (OR, 3.92; 95% CI, 1.96-7.82), and KRAS mutation (OR, 2.54; 95% CI, 1.48-4.34; p < 0.01) were independently associated with the development of advanced lesions at surveillance.
Conclusions: Our results show that, in patients with high-risk adenomas, the presence of somatic mutations in KRAS is an independent risk factor for the development of advanced metachronous polyps.
期刊介绍:
United European Gastroenterology Journal (UEG Journal) is the official Journal of the United European Gastroenterology (UEG), a professional non-profit organisation combining all the leading European societies concerned with digestive disease. UEG’s member societies represent over 22,000 specialists working across medicine, surgery, paediatrics, GI oncology and endoscopy, which makes UEG a unique platform for collaboration and the exchange of knowledge.