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Intronic haplotypes in the GBA gene do not predict age at diagnosis of Parkinson's Disease


Background

GBA mutations are a common risk factor for Parkinson's disease (PD). A recent study has suggested that GBA haplotypes, identified by intronic variants, can affect age at diagnosis of PD.

Objectives

In this study, we assess this hypothesis using long reads across a large cohort and the publicly available Accelerating Medicines Partnership–Parkinson's Disease (AMP-PD) cohort.

Methods

We recruited a PD cohort through the Remote Assessment of Parkinsonism Supporting Ongoing Development of Interventions in Gaucher Disease study (RAPSODI) and sequenced GBA using Oxford Nanopore technology. Genetic and clinical data on the full AMP-PD cohort were obtained from the online portal of the consortium.

Results

A total of 1417 participants were analyzed. There was no significant difference in age at PD diagnosis between the two main haplotypes of the GBA gene.

Conclusions

GBA haplotypes do not affect age at diagnosis of PD in the two independent cohorts studied. © 2021 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society

Authors: Marco Toffoli, Abigail Higgins, Chiao Lee, Sofia Koletsi, Xiao Chen, Michael Eberle, Fritz J. Sedlazeck, Stephen Mullin, Christos Proukakis, Anthony H.V. Schapira

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