rs314277

A hospital-based case-control study in rural and urban India (1,204 cases; 1,212 controls) examined genetic and lifestyle risk factors for breast cancer. Four SNPs in FGFR2 (rs1219648, rs2420946, rs2981575, rs2981582) showed positive associations with breast cancer (ORs 1.32-1.47). Additional SNPs in obesity and metabolic genes (rs374748 in FBN2, rs2922763 in HNF4G, rs2116830 in KCNMA1, rs11121832 in MTHFR, rs16886165 in MAP3K1, rs11594610 in TCF7L2, rs2274459 in MLN) were associated with increased breast cancer risk. Waist-to-hip ratio ≥0.95 showed strong association (OR 3.78; 95% CI 2.92-4.89), and women living first 20 years in rural areas showed protective effect (OR 0.77).

A genome-wide association study of 979 healthy adults identified SMOC1 as a novel locus strongly associated with digit ratio (2D:4D), a biomarker of prenatal sex hormone exposure. The strongest association was at rs4902759 (P = 1.41 × 10⁻⁸), with each additional C allele decreasing 2D:4D by 0.0076. Meta-analysis with an independent study yielded P = 1.5 × 10⁻¹¹. The authors propose that SMOC1, a gene critical for limb development that is regulated by sex hormones, mediates the relationship between prenatal hormone exposure and digit ratio.

Genome-wide association study in 618 Northern Chinese and replication in 2,953 Southern Chinese identified 13 contiguous SNPs in the ZNF510/ZNF782 region significantly associated with stature (P = 9.71×10^-5 to 3.11×10^-6, FDR q = 0.036-0.046). The most significant SNP rs10816533 replicated in Southern Chinese (P = 0.029, combined P = 1.55×10^-6), suggesting this is an ethnic-specific locus for height variation in Chinese populations.