Glucocerebrosidase Mutations in a Serbian Parkinson’s Disease Population
European Journal of Neurology 2013, 20: 402–405
Gaucher disease (GD) is caused by homozygous or compound heterozygous mutations in the b-glucocerebrosidase (GBA) gene. GBA mutations can be classified according to phenotypic effects as mild (associated with ‘non-neuronopathic’ Type 1 GD) and severe or null (neuronopathic Type 2 or 3 disease) . In addition to causing GD, GBA mutations are also susceptibility factors for Parkinson’s disease (PD) [2,3]. Most studies show an association between GBA mutations and PD, although this association was not found in a Norwegian population . The frequency of the different GBA mutations varies according to ethnicity. In Ashkenazi Jewish (AJ) and French populations, N370S is the most frequent mutation [2,3], whereas in Asian populations, the L444P mutation is more common . PD patients with GBA mutations present earlier and are more likely to have a positive family history and cognitive changes . A common founder has been observed for the N370S mutation in AJs and in several European populations [5 – 7]. In the present study, we elucidated, for the first time, the role of GBA mutations in PD in the Serbian population, including mutational analysis of exons 8–11, genotype–phenotype comparisons, and haplotyping for the N370S mutation.