Abstract
Recent studies have identified an expanded GGC repeat in the 5′ untranslated region of the NOTCH2NLC gene as a possible pathogenic genetic cause of neuronal intranuclear inclusion disease. Converging evidence verifying the presence of the same GGC repeat expansion in patients with Alzheimer's disease, Parkinson's disease, and other neurodegenerative diseases has also received increased attention. Inspired by some of the clinical similarities between neuronal intranuclear inclusion disease and multiple system atrophy (MSA), we used repeat-primed PCR to explore the occurrence of GGC repeats in 328 patients with MSA in mainland China. Our result failed to detect any GGC repeat expansion in these patients with MSA, indicating that the NOTCH2NLC gene may not be involved in the pathogenesis of MSA.
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