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J Neurol Neurosurg Psychiatry. 2007 Jan;78(1):82-4.

PINK1 mutation heterozygosity and the risk of Parkinson's disease.

Author information

1
Department of Neuroscience, Norwegian University of Science and Technology (NTNU), N-7489 Trondheim, Norway. mathias.toft@ntnu.no

Abstract

BACKGROUND:

Mutations in the PTEN-induced kinase 1 (PINK1) gene have been identified in recessively inherited and sporadic early-onset parkinsonism (EOP).

METHODS:

A total of 131 Norwegian patients diagnosed with Parkinson's disease were included. Of them, 89 participants had EOP (onset < or = 50 years); the remaining had familial late-onset disease (mean age at onset 64 years). PINK1 analysis included sequencing and gene dose assessment. Mutations were examined in 350 controls.

RESULTS:

Heterozygous missense mutations in PINK1 were found in 3 of 131 patients; none of the patients carried homozygous or compound heterozygous mutations. One of these three patients had a father affected by Parkinson's disease, and he carried the mutation. Three new and seven known polymorphic variants were identified, although none seemed to be associated with disease risk.

CONCLUSIONS:

PINK1 mutations are rare in Norwegian patients with EOP and familial Parkinson's disease. However, the data suggest that some heterozygous mutations might increase the risk of developing Parkinson's disease.

PMID:
17172567
PMCID:
PMC2117782
DOI:
10.1136/jnnp.2006.097840
[Indexed for MEDLINE]
Free PMC Article
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