In mutational analysis of EIF2B genes in 68 families [MISCELLANEOUS] 62% had mutations in EIF2B5 [MISCELLANEOUS] Onset variable from infancy (early-onset) to adulthood (late-onset) [MISCELLANEOUS] Chronic, progressive disease with episodes of rapid deterioration with loss of motor functioning and possible coma [MISCELLANEOUS] Subset of patients with ovarian failure and later onset of neurologic dysfunction [MISCELLANEOUS] Caused by mutation in the eukaryotic translation initiation factor 2B, subunit 5 gene (EIF2B5, 603945.0001) [MOLECULAR BASIS] Cree leukoencephalopathy is a rapidly fatal infantile variant (onset 3-9 months) in the Canadian Cree and Chippewayan indigenous population [MISCELLANEOUS] Episodic deterioration provoked following fever, head trauma, or fright [MISCELLANEOUS]
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