RT Journal Article SR Electronic T1 No Association with Risk for Colorectal Cancer of the Insertion/Deletion Polymorphism which Affects Levels of Angiotensin-converting Enzyme JF In Vivo JO In Vivo FD International Institute of Anticancer Research SP 1065 OP 1068 VO 21 IS 6 A1 NIKOLAOS NIKITEAS A1 CHRISTOS TSIGRIS A1 AGAPI CHATZITHEOFYLAKTOU A1 ATHANASIOS YANNOPOULOS YR 2007 UL http://iv.iiarjournals.org/content/21/6/1065.abstract AB Background: In the light of the established association of angiotensin-converting enzyme (ACE) with several types of cancer, the possible contribution of the insertion/deletion (I/D) polymorphism that affects ACE gene expression, in the development of colorectal cancer was investigated. Materials and Methods: DNA samples of 92 patients with colorectal cancer (adenocarcinomas) and 102 healthy controls were examined by allele-specific polymerase chain reaction followed by electrophoretic analysis. The resulting allele and genotype frequencies of the patients were compared to those of the controls by Fischer's exact test and odds ratios. Results: No statistical differences were observed between healthy controls and patients with colorectal cancer regarding either genotype distribution or low expression I allele frequency. Conclusion: The ACE I/D polymorphism is not a genetic predisposing factor concerning the risk for colorectal cancer. Copyright © 2007 International Institute of Anticancer Research (Dr. John G. Delinassios), All rights reserved