Mean age at onset 5 years [MISCELLANEOUS] Caused by mutation in the mitochondrial transfer RNA-leucine gene (MTTL1, 590050.0001) [MOLECULAR BASIS] Cyclic vomiting syndrome plus (CVS+) is characterized by additional neuromuscular and/or visceral organ manifestations (as indicated above) [MISCELLANEOUS] Mean age at resolution of symptoms 10 years [MISCELLANEOUS]
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