rs603965

This case-control association study evaluated 23 genetic sequence variants in 17 genes across DNA repair, cell cycle, and other pathways in 531 stage I-II radiation-treated head and neck cancer (HNC) patients to identify associations with secondary primary cancers (SPCs). Among the variants tested, the DNMT3B C149T variant (rs2424913) showed a strong significant association with SPC development, with adjusted hazard ratios of 2.23 (95% CI, 1.32-3.78; P = .003) for TT versus CC genotype and 1.49 (95% CI, 1.15-1.95; P = .003) per T allele. A haplotype cluster of 5 DNMT3B variants in strong linkage disequilibrium also showed significant associations (P < .003), suggesting aberrant DNA methylation is an important modulator of field cancerization in HNC.

This case-control study of 722 lung cancer cases and 929 controls examined 240 SNPs in DNA repair and cell cycle control pathway genes among smokers. Thirty-eight SNPs were associated with lung cancer risk at P<0.05, with strongest associations in GTF2H4 (rs2074508), LIG1 (rs10500298), PARP1 (rs747658, rs3219073), and XRCC1 (rs1799782, rs3213255). A genetic risk score combining 31 SNPs showed 3.44-fold increased risk in the highest versus lowest quartile.

Two-stage replication study of 9 SNPs in 8 genes previously associated with breast cancer survival in 6,307 Chinese women (Stage 1: 1,115 cases, Stage 2: 5,192 cases). MMP7 rs11225297 and MMP8 rs11225395 showed consistent associations with overall survival, with rare alleles conferring 20-40% improved survival (HR 0.4-0.6 and 0.6 for TT genotypes respectively, p<0.001).

This comprehensive review examines genetic association studies on prostate cancer, discussing GWASs that have identified over 75 variants associated with PCa risk (as of February 2016), with major susceptibility regions at 8q24, 17q12, 17q24, 10q11, and 19q13. The paper also reviews candidate gene-based approaches targeting genes involved in androgen signaling, carcinogen metabolism, DNA repair, vitamin D signaling, inflammation, angiogenesis, and cellular adhesion, as well as regulatory RNA genes.

Case-control study examining associations between cell cycle gene polymorphisms and non-Hodgkin lymphoma (NHL) overall and subtypes. Studied 10 SNPs in genes including BCL6 (rs1056932), CCND1 (rs603965, rs678653), CCNH (rs2266690), CDKN2A (rs3731249, rs11515, rs3088440), CHEK1 (rs506504), LMO2 (rs2038602, rs3740617), and TERT (rs2736098, rs2853690). Notable associations included CCND1 rs603965 with increased NHL risk (p trend=0.021) and CCND1 rs603965 AA genotype with DLBCL (OR=1.4, 95% CI 1.0-2.0).