Abstract
X-linked dystonia parkinsonism (XDP) or "Lubag" is a genetic dystonia syndrome observed among Filipinos that can present with levodopa-responsive parkinsonism and abnormal dopamine transporter (DAT) imaging. The aim of this study is to describe the results of skin biopsies for phosphorylated α-synuclein (P-SYN) in XDP. This study used the retrospective chart review. We report 6 patients who carried the XDP gene mutation with DAT imaging and skin biopsies to detect P-SYN. Five had segmental or multifocal dystonia and parkinsonism: 4 were levodopa-responsive and 1 non-levodopa-responsive. One patient was asymptomatic but had mild bradykinesia. Cutaneous P-SYN and abnormal DAT scans were noted in the 4 levodopa-responsive patients and 1 asymptomatic patient. We report for the first time the presence of cutaneous P-SYN in XDP. Our findings suggest that XDP may be a hitherto-undescribed synucleinopathy or that some XDP patients may have concurrent Parkinson's disease.
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More From: Movement disorders : official journal of the Movement Disorder Society
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