Frequency and phenotypic spectrum of KMT2B dystonia in childhood: A single‐center cohort study

Abstract excerpt

BACKGROUND: Childhood-onset dystonia is often genetically determined. Recently, KMT2B variants have been recognized as an important cause of childhood-onset dystonia. OBJECTIVE: To define the frequency of KMT2B mutations in a cohort of dystonic patients aged <18 years at onset, the associated clinical and radiological phenotype, and the natural history of disease. METHODS: Whole-exome sequencing or customized...

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