UNC13A Polymorphism Influences Survival in Patients with Frontotemporal Dementia

Area of Science:

• Neuroscience
• Genetics
• Clinical Neurology

Background:

• Amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD) are neurodegenerative diseases with overlapping features.
• The UNC13A gene, specifically the rs12608932 polymorphism, has been implicated in ALS prognosis.
• The prognostic value of UNC13A in FTD remains less understood.

Purpose of the Study:

• To investigate the association between the UNC13A gene variant (rs12608932-CC) and survival in patients diagnosed with frontotemporal dementia (FTD).

Main Methods:

• Survival analysis was conducted on a cohort of 626 FTD patients from Dutch memory clinics.
• Cox proportional hazard models were employed to assess survival in a recessive genetic model.
• A subcohort of 150 patients with confirmed TDP-43 pathology was included for detailed analysis.

Main Results:

• Homozygosity for the rs12608932-C allele in the UNC13A gene was significantly associated with reduced survival in FTD patients.
• The hazard ratio for shorter survival in homozygous individuals was 1.28 (95% CI: 1.02-1.60, p=0.033).

Conclusions:

• The rs12608932-C genotype of UNC13A is a significant prognostic factor for survival in FTD.
• These findings have important implications for patient counseling and the design of clinical trials for FTD.