RT Journal Article T1 Differential colorectal carcinogenesis: Molecular basis and clinical relevance. A1 Morán, Alberto A1 Ortega Molina, Soledad Paloma A1 Juan Chocano, María Del Carmen De A1 Fernández Marcelo, Tamara A1 Frías, Cristina A1 Sánchez Pernaute, Andrés A1 Torres García, Antonio José A1 Díaz-Rubio García, Eduardo A1 Benito De Las Heras, Manuel R. AB Colorectal cancer (CCR) is one of the most frequent cancers in developed countries. It poses a major public health problem and there is renewed interest in understanding the basic principles of the molecular biology of colorectal cancer. It has been established that sporadic CCRs can arise from at least two different carcinogenic pathways. The traditional pathway, also called the suppressor or chromosomal instability pathway, follows the Fearon and Vogelstein model and shows mutation in classical oncogenes and tumour suppressor genes, such as K- ras, adenomatous polyposis coli, deleted in colorectal cancer, or p53. Alterations in the Wnt pathway are also very common in this type of tumour. The second main colorectal carcinogenesis pathway is the mutator pathway. This pathway is present in nearly 15% of all cases of sporadic colorectal cancer. It is characterized by the presence of mutations in the microsatellite sequences caused by a defect in the DNA mismatch repair genes, mostly in hMLH1 or hMSH2. These two pathways have clear molecular differences, which will be reviewed in this article, but they also present distinct histopathological features. More strikingly, their clinical behaviours are completely different, having the "mutator" tumours a better outcome than the "suppressor" tumours. (C) 2010 Baishideng. All rights reserved. PB BAISHIDENG PUBLISHING GROUP INC SN 1948-5204 YR 2010 FD 2010 LK https://hdl.handle.net/20.500.14352/130320 UL https://hdl.handle.net/20.500.14352/130320 LA eng NO Morán A, Ortega P, de Juan C, Fernández-Marcelo T, Frías C, Sánchez-Pernaute A, Torres AJ, Díaz-Rubio E, Iniesta P, Benito M. Differential colorectal carcinogenesis: Molecular basis and clinical relevance. World J Gastrointest Oncol. 2010 Mar 15;2(3):151-8. doi: 10.4251/wjgo.v2.i3.151. PMID: 21160823; PMCID: PMC2999176. DS Docta Complutense RD 26 feb 2026