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Updated: Jun 2, 2026

Rab10 Phosphorylation Detection by LRRK2 Activity Using SDS-PAGE with a Phosphate-binding Tag
Published on: December 14, 2017
LRRK2 G2019S mutation does not contribute to Parkinson's disease in South India
Bejoy Vijayan1, Srinivas Gopala, Asha Kishore
1Department of Neurology, Comprehensive Care Centre for Movement Disorders, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Kerala, India.
Background:
The frequency of leucine-rich repeat kinase 2 (LRRK2) G2019S mutation, the most common genetic cause of Parkinson's disease (PD), shows significant variation based on ethnicity. Earlier reports suggest a very low frequency or absence of this mutation in Asians.
Objective:
To analyze the frequency of LRRK2 G2019S mutation in sporadic and familial cases of PD and normal controls of common ethnicity from South India.
Patients And Methods:
We used direct sequencing technique of all DNA samples in a clinic-based study of sporadic (n = 100) and familial PD patients (n = 86 index cases) and normal controls (n = 100) of common ethnicity from South India.
Results:
None among the patients or controls had the G2019S mutation.
Conclusion:
The founding events that influenced a number of other populations/ethnicities had no impact on the genetic makeup of PD patients from South India. Our findings support the current view that G2019S-associated PD may be population-specific. This has implications in genetic testing for PD and selection of subjects for potential future gene-based therapeutic trials for G2019S carriers in such populations.
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