Presents as early-onset strokes in 43% of patients [MISCELLANEOUS] Caused by mutations in the homolog of the Drosophila Notch 3 gene (NOTCH3, 600276.0001). [MOLECULAR BASIS] Death usually in sixth decade [MISCELLANEOUS] Adult onset (third decade) [MISCELLANEOUS] Penetrance of disease is complete between 30 and 40 years of age [MISCELLANEOUS]
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