A point mutation in ε-sarcoglycan induces inherited myoclonus dystonia syndrome in a Chinese family.
2013
Myoclonus dystonia syndrome is a rare movement disorder featured by myoclonic jerks and dystonia. We identified here a point mutation in e-sarcoglycan gene exon 6 associating with inherited myoclonus dystonia syndrome in a Chinese Han family. The mutation identified induces a stop codon and terminates the transcription of e-sarcoglycan mRNA. This in turn results in a large truncation of e-sarcoglycan protein. The further investigation is required to understand physiological and pathological functions of e-sarcoglycan.
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