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SCIENTIFIC LITERATURE · MED

Parkinsonism with a Hint of Huntington's from 29 CAG Repeats in HTT.

Brain Sci · 2019-09-22

DOI: 10.3390/brainsci9100245PMID: 31546689

Open accessJournal Article; Case Reports; case-reportOriginal source ↗

Research overview

The text below is the source article’s original abstract under a verified reuse license. cc by

Huntington's disease is caused by at least 36 cytosine-adenine-guanine (CAG) repeats in an HTT gene allele, but repeat tracts in the intermediate range (27-35 repeats) also display a subtle phenotype. This patient had a slightly elongated CAG repeat tract (29 repeats), a prominent family history of Parkinson's disease (PD), and a clinical phenotype mostly consistent with PD, but early dystonia and poor levodopa response. Neurophysiological test results were more consistent with Huntington's disease (HD) than PD. It is suggested that the intermediate allele modulated the clinical phenotype of PD in this patient.

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