15 October 2017 : Clinical Research
Angiotensin-Converting Enzyme Gene Deletion Polymorphism is Associated with Lymph Node Metastasis in Colorectal Cancer Patients in a Chinese PopulationXiao Zheng12AB, Guoli Liu3CD, Gang Cui2EF, Ming Cheng2BE, Nan Zhang2BE, Sanyuan Hu1G
Med Sci Monit 2017; 23:4926-4931
BACKGROUND: The purpose of this study was to assess the effect of angiotensin-converting enzyme (ACE) gene insertion/deletion (I/D) polymorphism on the risk of lymph node metastasis (LNM) in colorectal cancer (CRC) patients.
MATERIAL AND METHODS: We enrolled 146 CRC patients and 106 healthy controls in this study. ACE gene I/D polymorphism was genotyped by polymerase chain reaction (PCR). Hardy-Weinberg equilibrium (HWE) was used to assess the goodness of fit of the genotypes. χ² test was used to calculate the differences of genotype and allele distributions. Odds ratios (ORs) with corresponding 95% confidence intervals (95% CIs) were used to analyze the association between ACE I/D polymorphism and LNM in CRC patients.
RESULTS: Insertion/deletion (ID) and deletion/deletion (DD) genotypes were frequently observed in CRC patients, but only DD genotype and D allele were related to the susceptibility of CRC (P=0.038, OR=2.158, 95%CI=1.039–4.480; P=0.026, OR=1.501, 95%CI=1.048–2.150). DD genotype and D allele also increased the risk of LNM in CRC patients (P=0.028, OR=2.844, 95%CI=1.107–7.038; P=0.026, OR=1.692, 95%CI=1.063–2.693).
CONCLUSIONS: DD genotype and D allele of ACE gene I/D polymorphism might increase the risk of LNM in CRC patients.
Keywords: Cetirizine, Colorectal Neoplasms, Lymphatic Abnormalities, Polymorphism, Single-Stranded Conformational
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