Clinical phenotype in patients with alpha-synuclein Parkinson's disease living in Greece in comparison with patients with sporadic Parkinson's disease

Journal of Neurology, Neurosurgery, and Psychiatry
S PapapetropoulosT Papapetropoulos

Abstract

An Ala53Thr mutation of the alpha-synuclein gene has been recently identified as a rare cause of autosomal Parkinson's disease (PD). The clinical characteristics of 15 patients with PD living in Greece with the Ala53Thr alpha-synuclein mutation (alpha-synPD) were compared with patients with sporadic Parkinson's disease (sPD). An investigator, blind to the results of the genetic analysis, examined 15 patients with alpha-synPD and 52 consecutive patients with sPD. Demographic data, age at onset of the illness, modality of presentation, and duration of PD were collected. The unified Parkinson's disease rating scale, the Hoehn and Yahr scale, and the Schwab-England scale were completed. The patients with alpha-synPD were matched for duration of disease with 32 of the 52 patients with sporadic PD (MsPD group). Patients with the alpha-synuclein mutation were significantly younger (mean 7.6 years), showed the first sign of the disease significantly earlier in life (mean 10.8 years), and had significantly longer duration of the disease compared with patients with sPD. Tremor at onset of the disease was present in only one (6.7%) of the patients with alpha-synPD, whereas it was present in 32 (61.5%) of the patients with sPD (p=0.0006). ...Continue Reading

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