NDLI: Association of LEP A19G polymorphism with cancer risk: a systematic review and pooled analysis

Content Provider	Springer Nature Link
Author	Liu, Pengcheng Shi, Hui Huang, Changjia Shu, Hexi Liu, Run Yang, Yunji Gong, Jinpeng Yang, Yong Cai, Ming
Copyright Year	2014
Abstract	The results from the published studies on the association between leptin (LEP) genetic polymorphism and cancer risk are conflicting. The common A19G (rs2167270) genetic polymorphism has been reported to be functional and may contribute to genetic susceptibility to cancers. However, the association between LEP A19G (rs2167270) genetic polymorphism and cancer risk remains inconclusive. To better understand the role of LEP A19G (rs2167270) genetic polymorphism in global cancer, we conducted this comprehensive meta-analysis encompassing 5,679 cases and 7,443 controls. Overall, the LEP A19G (rs2167270) genetic polymorphism was associated with lower cancer risk. In the stratified analysis, significant associations were found between the LEP A19G (rs2167270) genetic polymorphism and colorectal cancer and non-Hodgkin’s lymphoma. For colorectal cancer, there was no significant association of LEP A19G (rs2167270) variant with this disease under heterozygous codominant model [odds ratio (OR) = 1.11 (0.97–1.27)], dominant genetic model [OR = 1.03 (0.91–1.17)], and additive genetic model [OR = 0.94 (0.86–1.03)]; however, there was a marginal association under homozygous codominant model [OR = 0.80 (0.66–0.97)] and recessive genetic model [OR = 0.75 (0.63–0.90)]. For non-Hodgkin’s lymphoma, there was a significant association of LEP A19G (rs2167270) variant with the disease under homozygous codominant model [OR = 0.74 (0.59–0.94)], recessive genetic model [OR = 0.76 (0.61–0.94)], and additive genetic model [OR = 0.89 (0.80–0.99)], but not under heterozygous codominant model [OR = 0.95 (0.82–1.10)] and dominant genetic model [OR = 0.91 (0.79–1.04)]. Moreover, a significantly decreased cancer risk was found in recessive genetic model among Latin American population. When stratified by study design, significantly elevated susceptibility to cancer was not found among any studies. No significantly differences in genotype method and sample size in cases were found among genotypes. These findings suggest that the LEP A19G (rs2167270) genetic polymorphism may decrease the susceptibility to cancers in colorectal cancer and non-Hodgkin’s lymphoma, when assuming a homozygote codominant model and a recessive genetic model among Latin American population. The phenomenon also indicates that the SNP functions as a recessive mutation, which needs to be verified or linked with functional studies.
Starting Page	8133
Ending Page	8141
Page Count	9
File Format	PDF
ISSN	10104283
Journal	Tumor Biology
Volume Number	35
Issue Number	8
e-ISSN	14230380
Language	English
Publisher	Springer Netherlands
Publisher Date	2014-05-21
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	LEP A19G rs2167270 Cancer Genetic polymorphism Meta-analysis Cancer Research
Content Type	Text
Resource Type	Article
Subject	Medicine Cancer Research

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