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Variable age at onset [MISCELLANEOUS] Caused by mutation in the voltage-dependent calcium channel, N type, alpha-1B subunit gene (CACNA1B, 601012.0001) [MOLECULAR BASIS] Progressive disorder [MISCELLANEOUS] Myoclonus occurs at rest and with action [MISCELLANEOUS] One family with a CACNA1B mutation has been reported (last curated March 2015) [MISCELLANEOUS]
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