AIM: To investigate genetics of two cases of colorectal tumor local recurrence and throw some light on the etiopathogenesis of anastomotic recurrence. METHODS: Two cases are presented: a 65-year-old female receiving two colonic resections for primary anastomotic recurrences within 21 mo, and a 57-year-old female undergoing two local excisions of recurrent anastomotic adenomas within 26 mo. A loss of heterozygosity (LOH) study of 25 microsatellite markers and a mutational analysis of genes BRAF, K-RAS and APC were performed in samples of neoplastic and normal colonic mucosa collected over the years. RESULTS: A diffuse genetic instability was present in all samples, including neoplastic and normal colonic mucosa. Two different patterns of genetic alterations (LOH at 5q21 and 18p11.23 in the first case, and LOH at 1p34 and 3p14 in the second) were found to be associated with carcinogenesis over the years. A role for the genes MYC-L (mapping at 1p34) and FIHT (mapping at 3p14.2) is suggested, whereas a role for APC (mapping at 5q21) is not shown. CONCLUSION: The study challenges the most credited intraluminal implantation and metachronous carcinogenesis theories, and suggests a persistent, patient-specific alteration as the trigger of colorectal cancer anastomotic recurrence.
AIM: To investigate genetics of two cases of colorectal tumor local recurrence and throw some light on the etiopathogenesis of anastomotic recurrence. METHODS: Two cases are presented: a 65-year-old female receiving two colonic resections for primary anastomotic recurrences within 21 mo, and a 57-year-old female undergoing two local excisions of recurrent anastomotic adenomas within 26 mo. A loss of heterozygosity (LOH) study of 25 microsatellite markers and a mutational analysis of genes BRAF, K-RAS and APC were performed in samples of neoplastic and normal colonic mucosa collected over the years. RESULTS: A diffuse genetic instability was present in all samples, including neoplastic and normal colonic mucosa. Two different patterns of genetic alterations (LOH at 5q21 and 18p11.23 in the first case, and LOH at 1p34 and 3p14 in the second) were found to be associated with carcinogenesis over the years. A role for the genes MYC-L (mapping at 1p34) and FIHT (mapping at 3p14.2) is suggested, whereas a role for APC (mapping at 5q21) is not shown. CONCLUSION: The study challenges the most credited intraluminal implantation and metachronous carcinogenesis theories, and suggests a persistent, patient-specific alteration as the trigger of colorectal cancer anastomotic recurrence.
Authors: Asad Umar; C Richard Boland; Jonathan P Terdiman; Sapna Syngal; Albert de la Chapelle; Josef Rüschoff; Richard Fishel; Noralane M Lindor; Lawrence J Burgart; Richard Hamelin; Stanley R Hamilton; Robert A Hiatt; Jeremy Jass; Annika Lindblom; Henry T Lynch; Païvi Peltomaki; Scott D Ramsey; Miguel A Rodriguez-Bigas; Hans F A Vasen; Ernest T Hawk; J Carl Barrett; Andrew N Freedman; Sudhir Srivastava Journal: J Natl Cancer Inst Date: 2004-02-18 Impact factor: 13.506
Authors: M Karoui; C Tresallet; C Julie; U Zimmermann; F Staroz; A Brams; C Muti; C Boulard; A-M Robreau; H Puy; R Malafosse; C Penna; F-R Pruvot; J P Thiery; C Boileau; P Rougier; B Nordlinger; F Radvanyi; B Franc; H Hofmann-Radvanyi Journal: Br J Cancer Date: 2004-03-22 Impact factor: 7.640
Authors: Amy L Masson; Bente A Talseth-Palmer; Tiffany-Jane Evans; Patrick McElduff; Allan D Spigelman; Garry N Hannan; Rodney J Scott Journal: Meta Gene Date: 2015-12-24
Authors: Lorenzo Viani; Paolo Dell'Abate; Paolo Del Rio; Federico Marchesi; Francesco Tartamella; Matteo Rossini; Elisa Bertocchi; Mario Giuffrida Journal: Acta Biomed Date: 2020-11-10