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ISSN 1001-5256 (Print)
ISSN 2097-3497 (Online)
CN 22-1108/R
Volume 41 Issue 9
Sep.  2025
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Article Contents

Association of growth hormone secretagogue receptor rs2922126 gene polymorphism with susceptibility to non-alcoholic fatty liver disease

DOI: 10.12449/JCH250915
Research funding:

National Natural Science Foundation of China (32171277)

More Information
  • Corresponding author: XIN Yongning, xinyongning@163.com (0000-0002-3692-7655); ZHAO Zhenzhen, qdzzz1987@163.com (0000-0002-5883-1056)
  • Received Date: 2025-02-21
  • Accepted Date: 2025-04-07
  • Published Date: 2025-09-25
  •   Objective  To investigate growth hormone secretagogue receptor (GHSR) rs2922126 gene polymorphisms and their association with genetic susceptibility to nonalcoholic fatty liver disease (NAFLD) in the Chinese Han population in Qingdao, China, and to provide a basis for diagnosis and treatment.  Methods  A total of 220 patients who were admitted to Qingdao Municipal Hospital from June 2022 to June 2023 and were diagnosed with NAFLD based on radiological examination were enrolled as NAFLD group, and 167 healthy individuals during the same period of time were enrolled as control group. Fasting blood samples were collected from all subjects, and related biochemical parameters were measured. Whole blood DNA was extracted, and polymerase chain reaction and MALDI-TOF mass spectrometer were used for genotyping. The chi-square test was used for comparison of categorical data between groups, and the independent-samples t test or the Mann-Whitney U test was used for comparison of continuous data between groups. The binary logistic regression analysis was used to investigate the risk of NAFLD.  Results  Compared with the control group, the NAFLD group had significantly higher age, body mass index (BMI), fasting plasma glucose, triglyceride, gamma-glutamyl transpeptidase, alkaline phosphatase, alanine aminotransferase, and aspartate aminotransferase, as well as a significantly lower level of high-density lipoprotein (all P<0.05). The distribution of GHSR rs2922126 genotypes was consistent with the Hardy-Weinberg equilibrium, suggesting population representativeness in the subjects enrolled (NAFLD group: P=0.106; control group: P=0.849). There was no significant difference in the distribution of AA, TA, and TT genotypes at GHSR rs2922126 locus between the control group and the NAFLD group (P=0.099), and there was also no significant difference in allele frequency between the two groups (P=0.063). In the recessive model of A allele, there was a significant difference in the distribution of AA homozygote and TA+TT genotype between the NAFLD group and the control group (P=0.032). The binary logistic regression analysis showed that in the recessive model of A allele, AA homozygote carriers had an increased risk of NAFLD compared with TA+TT genotype carriers (odds ratio [OR]=1.712, 95% confidence interval [CI]: 1.045 — 2.807, P=0.033). There was still a significant difference after adjustment for sex, age, and BMI (OR=2.156, 95%CI: 1.221 — 3.808, P=0.008). In the NAFLD group, AA genotype carriers had a significantly higher serum level of total cholesterol (TC) than TT+TA carriers (Z=-1.99,P=0.046).  Conclusion  GHSR rs2922126 AA genotype may be associated with the increased risk of NAFLD in the Chinese Han population in Qingdao, and GHSR rs2922126 AA genotype is associated with the increase in TC in NAFLD patients.

     

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