Genetic polymorphisms of CASR and cancer risk: evidence from meta-analysis and HuGE review
Authors Jeong S, Jae Hyun K, Myeong Gyu K, Han N, Kim IW, Therasa K, Oh J
Received 3 October 2015
Accepted for publication 3 December 2015
Published 9 February 2016 Volume 2016:9 Pages 655—669
Checked for plagiarism Yes
Review by Single-blind
Peer reviewers approved by Dr Ram Prasad
Peer reviewer comments 2
Editor who approved publication: Professor Daniele Santini
Sohyun Jeong, Jae Hyun Kim, Myeong Gyu Kim, Nayoung Han, In-Wha Kim, Therasa Kim, Jung Mi Oh
College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, South Korea
Background: CASR gene appears to be involved in cancer biology and physiology. However, a number of studies investigating CASR polymorphisms and cancer risks have presented inconclusive results. Thus, a systematic review and a meta-analysis of the effect of CASR polymorphisms on several cancer risks were performed to suggest a statistical evidence for the association of CASR polymorphisms with cancer risks.
Methods: MEDLINE, EMBASE, Web of Science, Scopus, and the HuGE databases were searched. Nineteen articles of case–control and cohort studies were included for the final analysis.
Results: The colorectal cancer risk was reduced in proximal (odds ratio [OR] =0.679, P=0.001) and distal (OR =0.753, P=0.026) colon sites with GG genotype of CASR rs1042636 and increased in distal colon site (OR =1.418, P=0.039) with GG genotype of rs1801726 by additive genetic model. The rs17251221 demonstrated noticeable associations that carrying a homozygote variant increases breast and prostate cancer risk considerably.
Conclusion: The significant association of CASR polymorphisms with several cancer risks was observed in this review. In particular, the act of CASR polymorphisms as a tumor suppressor or an oncogene differs by cancer site and can be the research target for tumorigenesis.
Keywords: rs1042636, rs1801725, rs1801726, systematic review, colorectal cancer
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