Williamson B Strum1, C Richard Boland2. 1. Division of Gastroenterology, Scripps Clinic Medical Group, 10666 North Torrey Pines Road, La Jolla, CA, 92037, USA. 2. Division of Gastroenterology, University of California San Diego, 9500 Gilman Drive #0956, La Jolla, CA, 92093, USA. crboland@ucsd.edu.
Abstract
BACKGROUND: The incidence of colorectal cancer (CRC) in persons under the age of 50 years (EOCRC) is increasing even as the incidence of CRC in persons over age 50 is decreasing. This has led to recommendations to lower the age of CRC screening to age 45. It is not clear whether EOCRC is identical to CRCs in older patients or whether there are distinctive features between the two groups. AIMS AND METHODS: We reviewed the literature on the clinical and genetic aspects of EOCRC. RESULTS: We found that there is an increased likelihood of a strong genetic basis for EOCRC, but that at least 80% of cases do not come from the known high-penetrance cancer syndromes. Early-onset CRCs tend to occur in the distal colon or rectum, are more likely to be detected due to cancer-related symptoms, appear to be increasing in whites more than non-whites on a population-wide analysis, and are more likely to present in an advanced stage of disease. There are some unique genetic features of EOCRC, including an increased proportion of tumors with LINE-1 hypomethylation, and combined chromosomal and microsatellite stability. CONCLUSIONS: EOCRC deserves additional attention because of the high number of life years at risk with EOCRC, and the implications for earlier CRC screening. Additional focus is needed on determining whether some cases of EOCRC have a unique mechanistic basis.
BACKGROUND: The incidence of colorectal cancer (CRC) in persons under the age of 50 years (EOCRC) is increasing even as the incidence of CRC in persons over age 50 is decreasing. This has led to recommendations to lower the age of CRC screening to age 45. It is not clear whether EOCRC is identical to CRCs in older patients or whether there are distinctive features between the two groups. AIMS AND METHODS: We reviewed the literature on the clinical and genetic aspects of EOCRC. RESULTS: We found that there is an increased likelihood of a strong genetic basis for EOCRC, but that at least 80% of cases do not come from the known high-penetrance cancer syndromes. Early-onset CRCs tend to occur in the distal colon or rectum, are more likely to be detected due to cancer-related symptoms, appear to be increasing in whites more than non-whites on a population-wide analysis, and are more likely to present in an advanced stage of disease. There are some unique genetic features of EOCRC, including an increased proportion of tumors with LINE-1 hypomethylation, and combined chromosomal and microsatellite stability. CONCLUSIONS: EOCRC deserves additional attention because of the high number of life years at risk with EOCRC, and the implications for earlier CRC screening. Additional focus is needed on determining whether some cases of EOCRC have a unique mechanistic basis.
Authors: David Limsui; Robert A Vierkant; Lori S Tillmans; Alice H Wang; Daniel J Weisenberger; Peter W Laird; Charles F Lynch; Kristin E Anderson; Amy J French; Robert W Haile; Lisa J Harnack; John D Potter; Susan L Slager; Thomas C Smyrk; Stephen N Thibodeau; James R Cerhan; Paul J Limburg Journal: J Natl Cancer Inst Date: 2010-06-29 Impact factor: 13.506
Authors: Rebecca L Siegel; Stacey A Fedewa; William F Anderson; Kimberly D Miller; Jiemin Ma; Philip S Rosenberg; Ahmedin Jemal Journal: J Natl Cancer Inst Date: 2017-08-01 Impact factor: 13.506
Authors: C R Boland; S N Thibodeau; S R Hamilton; D Sidransky; J R Eshleman; R W Burt; S J Meltzer; M A Rodriguez-Bigas; R Fodde; G N Ranzani; S Srivastava Journal: Cancer Res Date: 1998-11-15 Impact factor: 12.701
Authors: Zaid M Abdelsattar; Sandra L Wong; Scott E Regenbogen; Diana M Jomaa; Karin M Hardiman; Samantha Hendren Journal: Cancer Date: 2016-01-25 Impact factor: 6.860
Authors: María Arriba; Juan L García; Daniel Rueda; Jessica Pérez; Lorena Brandariz; Oana A Nutu; Laura Alonso; Yolanda Rodríguez; Miguel Urioste; Rogelio González-Sarmiento; José Perea Journal: Neoplasia Date: 2016-12-15 Impact factor: 5.715
Authors: Lorne J Hofseth; James R Hebert; Anindya Chanda; Hexin Chen; Bryan L Love; Maria M Pena; E Angela Murphy; Mathew Sajish; Amit Sheth; Phillip J Buckhaults; Franklin G Berger Journal: Nat Rev Gastroenterol Hepatol Date: 2020-02-21 Impact factor: 46.802
Authors: Karin Alvarez; Alessandra Cassana; Marjorie De La Fuente; Tamara Canales; Mario Abedrapo; Francisco López-Köstner Journal: Cells Date: 2021-03-12 Impact factor: 6.600
Authors: Sara Gostoli; Maria Montecchiarini; Alessia Urgese; Francesco Ferrara; Anna Maria Polifemo; Liza Ceroni; Asia Gasparri; Chiara Rafanelli; Vincenzo Cennamo Journal: Sci Rep Date: 2021-08-02 Impact factor: 4.379