Review Article

Genetic Variants in SNCA and the Risk of Sporadic Parkinson’s Disease and Clinical Outcomes: A Review

Table 2

Single nucleotide polymorphisms (SNPs) in SNCA associated with Parkinson’s disease.

VariantRegionAllelesStudies with significant association with PD risk

REP1Promoter259 bp/261 bp/263 bp[47, 50, 60, 64, 65, 68, 7173, 75, 77, 79, 81] (↑) [43, 56, 76] (↓)
rs1372519PromoterA/G[49] (↓)
rs2301134PromoterC/T[45, 76] (↑)
rs2301135PromoterC/G[45] (↓)
rs2619361PromoterA/C[49] (↑)
rs26193625′ regionC/T[49] (↑)
rs26193635′ regionG/T[49, 77] (↑)
rs26193645′ regionA/G[66, 77] (↑)
rs25839885′ regionC/T[49, 56, 61, 77] (↑)
rs2119787IntronA/G[65] (↓)
rs2197120IntronA/G[56] (↓)
rs2572324IntronC/T[49, 60, 64, 65] (↑)
rs2583959IntronC/G[49, 64] (↑)
rs2736990IntronT/C[27, 28, 41, 47, 49, 52, 55, 60] (↑) [40] (↓)
rs2737020IntronC/T[76] (↓)
rs2737029IntronC/T[56, 65, 80] (↑)
rs2737033IntronA/G[46] (↑)
rs356164IntronC/G[76] (↓)
rs356168IntronA/G[64, 80] (↑)
rs356186IntronA/G[56, 60, 76] (↓)
rs356203IntronA/G[27, 80] (↑)
rs356204IntronA/G[80] (↑)
rs3822086IntronC/T[37] (↓)
rs3857057IntronA/G[33] (↑)
rs3857059IntronA/G[29, 80] (↑)
rs6848726IntronC/T[80] (↓)
rs7684318IntronC/T[27, 66] (↑)
rs7689942IntronC/T[33] (↑)
rs894278IntronG/T[35, 36] (↑)
rs1372520IntronC/T[47, 49] (↑) [60] (↓)
rs10018362IntronC/T[33] (↑)
rs2737012IntronC/T[49] (↑)
rs3756063IntronC/G[36] (↑)
rs3775423IntronC/T[48, 60, 64] (↑)
rs3562213′ regionA/T[45, 48, 77] (↑)
rs3561653′ regionA/G[28, 50, 51, 54, 69, 73, 76, 77, 80] (↑)
rs3561823′ regionA/G[32] (↑)
rs3562183′ regionA/G[47, 49, 60] (↑)
rs3562193′ regionA/G[28, 42, 44, 46, 52, 53, 59, 6163, 65, 73, 78, 80] (↑)
rs3562203′ regionC/T[27, 28, 30, 33, 52, 55, 80] (↑) [40] (↓)
rs3562253′ regionC/T[33] (↑)
rs1814893′ regionC/T[61, 76, 77] (↑)
rs119310743′ regionG/T[30, 31, 34, 39, 55, 57, 61] (↑) [37, 45] (↓)

SNP: single nucleotide polymorphism. See Table 1. Arrows indicate whether the SNP increased (↑) or reduced (↓) PD susceptibility in each study, based on values of odds ratio and confidence intervals.