TARDBP mutations in Parkinson's disease.

Area of Science:

• Neurogenetics
• Molecular Neurology
• Proteinopathy Research

Background:

• Mutations in the TARDBP gene, encoding the TDP-43 protein, are established causes of amyotrophic lateral sclerosis (ALS).
• TDP-43 proteinopathies are increasingly recognized across diverse neurodegenerative conditions, including Alzheimer's disease (AD) and Parkinson's disease (PD).
• Clinical presentations associated with TARDBP mutations can be heterogeneous, sometimes including parkinsonism.

Observation:

• This report details a patient with a clinical diagnosis of Parkinson's disease who harbors a specific mutation in the TARDBP gene.
• The identified mutation is the TDP-43 p.N267S substitution, previously linked to ALS and frontotemporal dementia (FTD).

Findings:

• The presence of the TDP-43 p.N267S mutation in a Parkinson's disease patient expands the known phenotypic spectrum associated with this specific genetic alteration.
• This case demonstrates that rare TARDBP mutations can manifest clinically as Parkinson's disease.

Implications:

• These findings suggest a potential role for genetic screening of TARDBP mutations in specific Parkinson's disease cases.
• The study broadens the understanding of TDP-43 protein's involvement in neurodegeneration, highlighting its contribution beyond ALS.
• Further research into TDP-43's role in Parkinson's disease pathogenesis is warranted.