Association of Hla-G*01:01:02:01/G*01:04:01 Polymorphism With Gastric Adenocarcinoma Publisher Pubmed



Khorrami S¹ ; Rahimi R² ; Mohammadpour H² ; Bahrami S³ ; Yari F⁴ ; Poustchi H¹ ; Malekzadeh R¹ Show Affiliations
Source: Human Immunology Published:2016

Abstract

Human leukocyte antigen-(HLA-G) plays an important role in tumor cell escape from immune surveillance and HLA-polymorphisms might service as a potential risk factor for clinical outcomes in GAC (gastric adenocarcinoma). We investigated the association between HLA-polymorphisms as well as soluble HLA-level and accordance of GAC. This case-control study included 100 GAC patients and 102 unrelated Iranian individual's samples as control. The clinical stages ranged from I to IV. PCR-RFLP method was carried out in order to specify the genotypes of the HLA-gene. Concentrations of sHLA-in serum were determined with the sHLA-G-specific enzyme linked immunosorbent assay (ELISA) kit. The G*01:04:01 and G*01:01:02:01 alleles were the predominant alleles in GAC patients and healthy controls. The G*01:01:03:01 and G*01:01:08 allele distributions are significantly higher among controls comparing to cases and seem to have protective effect (value = 0.026 and 0.007 respectively). There is a substantial differences in G*01:01:02:01/G*01:04:01 genotype frequencies between cases and controls (OR = 2.8, P value < 0.001). The G*01:01:03:01/G*01:04:01 and G*01:01:02:01/G*01:01:08 genotypes frequency are higher among controls in comparison to patients (value = 0.028 and 0.007 respectively). The polymorphisms in HLA-could affect GAC induction and its outcome. Also, increased sHLA-levels in serum might be a useful biomarker for diagnosis. © 2015 American Society for Histocompatibility and Immunogenetics.