Key result
The CAPN10 UCSNP-44 CC genotype was significantly associated with an increased risk of polycystic ovary syndrome among South Indian women compared to the TC genotype (OR 2.51).
Case-Control (n=549)
Yes
Odds Ratio: 2.51 (95% CI 1.37–4.61)
Absolute Event Rate: 17.4% vs 8.9%
p-value: p=0.003
The UCSNP-44 polymorphism of the CAPN10 gene is significantly associated with an increased risk of PCOS in South Indian women.
May support genetic risk assessment in South Indian women; leaves open prospective validation and broader applicability.
Polycystic Ovary Syndrome (PCOS) is known to be characterized by metabolic disorder in which hyperinsulinemia and peripheral insulin resistance are central features. Given the physiological overlap between PCOS and type-2 diabetes (T2DM), and calpain 10 gene (CAPN10) being a strong candidate for T2DM, a number of studies have analyzed CAPN10 SNPs among PCOS women yielding contradictory results. Our study is first of its kind to investigate the association pattern of CAPN10 polymorphisms (UCSNP-44, 43, 56, 19 and 63) with PCOS among Indian women. 250 PCOS cases and 299 controls from Southern India were recruited for this study. Allele and genotype frequencies of the SNPs were determined and compared between the cases and controls. Results show significant association of UCSNP-44 genotype CC with PCOS (p = 0.007) with highly significant odds ratio when compared to TC (OR = 2.51, p = 0.003, 95% CI = 1.37-4.61) as well as TT (OR = 1.94, p = 0.016, 95% CI = 1.13-3.34). While the haplotype carrying the SNP-44 and SNP-19 variants (21121) exhibited a 2 fold increase in the risk for PCOS (OR = 2.37, p = 0.03), the haplotype containing SNP-56 and SNP-19 variants (11221) seems to have a protective role against PCOS (OR = 0.20, p = 0.004). Our results support the earlier evidence for a possible role of UCSNP-44 of the CAPN10 gene in the manifestation of PCOS.
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Dasgupta et al. (2012) conducted a case-control in Polycystic Ovary Syndrome (PCOS) (n=549). CAPN10 UCSNP-44 CC genotype vs. TC genotype was evaluated on Polycystic Ovary Syndrome (PCOS) diagnosis (OR 2.51, 95% CI 1.37-4.61, p=0.003). The CAPN10 UCSNP-44 CC genotype was significantly associated with an increased risk of polycystic ovary syndrome among South Indian women compared to the TC genotype (OR 2.51).
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