RT Journal Article T1 A genetic analysis of a Spanish population with early onset Parkinson's disease. A1 Tejera-Parrado, Cristina A1 Mir, Pablo A1 PeriƱan, Maria Teresa A1 Vela-Desojo, Lydia A1 Abreu-Rodriguez, Irene A1 Alonso-Canovas, Araceli A1 Bernal-Bernal, Inmaculada A1 Bonilla-Toribio, Marta A1 Buiza-Rueda, Dolores A1 Catalan-Alonso, Maria Jose A1 Garcia-Ramos, Rocio A1 Garcia-Ruiz, Pedro Jose A1 Huertas-Fernandez, Ismael A1 Silvia, Jesus A1 Espinosa-Labrador, Miguel A A1 Lopez-Manzanares, Lydia A1 Martinez-Castrillo, Juan Carlos A1 Posada, Ignacio J A1 Rojo-Sebastian, Ana A1 Ruiz-Huete, Cristina A1 Del-Val, Javier A1 Gomez-Garre, Pilar K1 Adult K1 Cohort Studies K1 Genetic Variation K1 Male K1 Parkinson Disease AB Both recessive and dominant genetic forms of Parkinson's disease have been described. The aim of this study was to assess the contribution of several genes to the pathophysiology of early onset Parkinson's disease in a cohort from central Spain. We analyzed a cohort of 117 unrelated patients with early onset Parkinson's disease using a pipeline, based on a combination of a next-generation sequencing panel of 17 genes previously related with Parkinson's disease and other Parkinsonisms and CNV screening. Twenty-six patients (22.22%) carried likely pathogenic variants in PARK2, LRRK2, PINK1, or GBA. The gene most frequently mutated was PARK2, and p.Asn52Metfs*29 was the most common variation in this gene. Pathogenic variants were not observed in genes SNCA, FBXO7, PARK7, HTRA2, DNAJC6, PLA2G6, and UCHL1. Co-occurrence of pathogenic variants involving two genes was observed in ATP13A2 and PARK2 genes, as well as LRRK2 and GIGYF2 genes. Our results contribute to the understanding of the genetic architecture associated with early onset Parkinson's disease, showing both PARK2 and LRRK2 play an important role in Spanish Parkinson's disease patients. Rare variants in ATP13A2 and GIGYF2 may contribute to PD risk. However, a large proportion of genetic components remains unknown. This study might contribute to genetic diagnosis and counseling for families with early onset Parkinson's disease. PB Public Library of Science YR 2020 FD 2020-09-01 LK http://hdl.handle.net/10668/16185 UL http://hdl.handle.net/10668/16185 LA en NO Cristina TP, Pablo M, Teresa PM, Lydia VD, Irene AR, Araceli AC, et al. A genetic analysis of a Spanish population with early onset Parkinson's disease. PLoS One. 2020 Sep 1;15(9):e0238098. DS RISalud RD Apr 8, 2025