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α‐synuclein ( SNCA ) but not dynamin 3 ( DNM3 ) influences age at onset of leucine‐rich repeat kinase 2 (LRRK2) Parkinson's disease in Spain
Author(s) -
FernándezSantiago Rubén,
Garrido Alicia,
Infante Jon,
GonzálezAramburu Isabel,
Sierra María,
Fernández Manel,
Valldeoriola Francesc,
Muñoz Esteban,
Compta Yaroslau,
Martí MaríaJosé,
Ríos José,
Tolosa Eduardo,
Ezquerra Mario
Publication year - 2018
Publication title -
movement disorders
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.352
H-Index - 198
eISSN - 1531-8257
pISSN - 0885-3185
DOI - 10.1002/mds.27295
Subject(s) - lrrk2 , parkinson's disease , kinase , dynamin , medicine , leucine rich repeat , disease , neuroscience , biology , biochemistry , receptor , endocytosis
ABSTRACT Objectives: A recent study showed that Arab‐Berbers GG homozygous at rs2421947(C/G) in the dynamin 3 gene ( DNM3 ) had 12.5 years earlier age at onset of leucine‐rich repeat kinase 2 ( LRRK2 )‐associated Parkinson's disease (PD) (L2PD). We explored whether this variant modulates the L2PD age at onset in Spain. Methods: We genotyped rs2421947 in 329 participants (210 L2PD patients, 119 L2PD nonmanifesting p.G2019S carriers), and marker rs356219 (A/G) in the α‐synuclein gene ( SNCA ). Results: By Kaplan Meier and Cox regression analyses, we did not find an association of the DNM3 polymorphism with L2PD age at onset. However, we found an association of the SNCA marker with up to an 11 years difference in the L2PD median age at onset (58 years for GG carriers vs 69 years for AA). Conclusion: Our results indicate that SNCA rs356219 but not dynamin 3 DNM3 rs2421947 modifies the penetrance of the mutation G2019S in the Spanish population by influencing the L2PD age at onset. These findings suggest that different genetic modifiers may influence the L2PD age at onset in different populations. © 2018 International Parkinson and Movement Disorder Society