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Updated: Feb 2, 2026

Genotyping Single Nucleotide Polymorphisms in the Mitochondrial Genome by Pyrosequencing
Published on: February 10, 2023
MAP9 single nucleotide polymorphism rs1058992 is a risk of EBV-associated gastric carcinoma in Chinese population
Abstract:
Microtubule-associated protein 9 (MAP9) is a mitosis-associated protein involved in bipolar spindle assembly. Following DNA damage, MAP9 stabilizes p53 via p300 and MDM2 (mouse double minute-2 homolog). The dysregulation of MAP9 was considered to be associated with tumorigenesis. Single nucleotide polymorphisms (SNPs) in key genes governing mitosis may particularly increase susceptibility to gastric carcinoma (GC). Our study demonstrated that the CC homozygous genotype of SNP rs1058992 located in the MAP9 gene was significantly correlated with EBV-associated GC (EBVaGC) in a recessive genetic model (OR = 2.558, 95% CI = 1.306-5.010, P = 0.043), and the C allele frequency of rs1058992 also showed significant correlation with EBVaGC (OR = 1.904, 95% CI = 1.141-3.179, P = 0.013). These results suggest that the MAP9 rs1058992 polymorphism is associated with risk of EBVaGC. The conversion of lysine to arginine caused by rs1058992 may affect development of EBVaGC; however, further studies in larger populations are needed to fully elucidate its role in EBVaGC. Keywords: SNP; EBV; gastric carcinoma; MAP9.
Insights
Single nucleotide polymorphisms (SNPs) in the MAP9 gene, specifically rs1058992, are linked to an increased risk of Epstein-Barr virus-associated gastric carcinoma (EBVaGC). This genetic variation may influence the development of EBVaGC.
Area of Science:
- Genetics
- Oncology
- Molecular Biology
Background:
- Microtubule-associated protein 9 (MAP9) plays a role in cell division and DNA damage response.
- MAP9 dysregulation is implicated in tumorigenesis, and specific genetic variations in mitosis-related genes may increase gastric carcinoma susceptibility.
Purpose of the Study:
- To investigate the association between single nucleotide polymorphisms (SNPs) in the MAP9 gene and the risk of gastric carcinoma (GC), particularly EBV-associated GC (EBVaGC).
Main Methods:
- Genotyping analysis was performed to evaluate the association of MAP9 SNPs with EBVaGC.
- Statistical analysis, including recessive genetic models and allele frequency calculations, was used to determine significance.
Main Results:
- The CC homozygous genotype of MAP9 SNP rs1058992 showed a significant correlation with EBVaGC (OR=2.558, P=0.043).
- The C allele frequency of rs1058992 was also significantly associated with EBVaGC risk (OR=1.904, P=0.013).
Conclusions:
- The MAP9 rs1058992 polymorphism is associated with an increased risk of developing EBV-associated gastric carcinoma.
- The rs1058992 polymorphism, potentially altering amino acids, may influence EBVaGC development, warranting further investigation in larger cohorts.
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