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

Autor(es)

das Chagas Campelo, Clarissa Loureiro ; Silva, Regina Helena

• Tipo de documento: Artigo Científico
• Fonte: PARKINSONS DISEASE; v. 2017, p. 11-pg., 2017-01-01.

Resumo

There is increasing evidence of the contribution of genetic susceptibility to the etiology of Parkinson's disease ( PD). Genetic variations in the SNCA gene are well established by linkage and genome-wide association studies. Positive associations of single nucleotide polymorphisms (SNPs) in SNCA and increased risk for PD were found. However, the role of SNCA variants in individual traits or phenotypes of PD is unknown. Here, we reviewed the current literature and identified 57 studies, performed in fourteen different countries, that investigated SNCA variants and susceptibility to PD. We discussed the findings based on environmental factors, history of PD, clinical outcomes, and ethnicity. In conclusion, SNPs within the SNCA gene can modify the susceptibility to PD, leading to increased or decreased risk. The risk associations of some SNPs varied among samples. Of notice, no studies in South American or African populations were found. There is little information about the effects of these variants on particular clinical aspects of PD, such as motor and nonmotor symptoms. Similarly, evidence of possible interactions between SNCA SNPs and environmental factors or disease progression is scarce. There is a need to expand the clinical applicability of these data as well as to investigate the role of SNCA SNPs in populations with different ethnic backgrounds. (AU)

• Processo FAPESP: 15/12308-5 - Investigação dos mecanismos relacionados às diferenças de progressão dos déficits motores entre ratos wistar e SHR (Spontaneusly hypertensive rat) submetidos a modelos farmacológicos da Doença de Parkinson
• Beneficiário: Anderson Henrique França Figueredo Leão
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado