Abstract
This study aims to investigate the correlation between the chondroitin sulfate proteoglycan 4 pseudogene 12 (CSPG4P12) polymorphism and the risk of colorectal cancer (CRC). This case–control study involved 850 patients with CRC and 850 health controls. The genotypes of CSPG4P12 (rs2880765, rs6496932, and rs8040855) were determined by the TaqMan-MGB probe method. Logistic regression model was employed to evaluate the association of CSPG4P12 single-nucleotide polymorphisms (SNPs) with the risk of CRC by calculating the odds ratio (OR) and 95% confidence interval (CI). The CSPG4P12 exhibited lower expression in CRC tissues. Our data showed that the rs6496932 variant increased CRC risk (CA vs. CC: p = 0.006; CA + AA vs. CC: p = 0.005). In contrast, the rs8040855 variant reduced the risk of CRC (CG vs. CC: p < 0.001; CG + GG vs. CC: p < 0.001). Stratification by gender and age revealed that the rs8040855 variant decreased CRC risk; however, the rs6496932 variant increased CRC risk among males (CA vs. CC: p = 0.024; CA + AA vs. CC: p = 0.014) and younger individuals (CA vs. CC: p = 0.004; CA + AA vs. CC: p = 0.010). When stratified by smoking and drinking status, the rs8040855 variant decreased CRC risk among nonsmokers (CG vs. CC: p < 0.001; CG + GG vs. CC: p < 0.001) and nondrinkers (CA vs. CC: p = 0.002; CA + AA vs. CC: p = 0.004). The rs6496932 variant increased CRC risk among nonsmokers (CA vs. CC: p = 0.016; CA + AA vs. CC: p = 0.036) and nondrinkers (CG vs. CC: p < 0.001; CG + GG vs. CC: p < 0.001). Haplotype analysis showed that the CSPG4P12 Trs2880765Crs6496932Grs8040855 haplotype reduced the risk of CRC compared with the reference haplotype (CSPG4P12 Ars2880765Crs6496932Crs8040855) (OR = 0.46, 95% CI = 0.26–0.82, p = 0.049). These findings highlight the potential of these genetic variants as biomarkers for CRC susceptibility, offering insights into personalized prevention strategies.
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