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Autopsy confirmed CADASIL with the c.1490C > T (p.S497L) variant of uncertain causal significance

Publication at Third Faculty of Medicine, Central Library of Charles University, First Faculty of Medicine |
2022

Abstract

Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) is characterized by recurrent strokes and progressive vascular dementia caused by a pathogenic mutation in the NOTCH3 geneon chromosome 19. This gene codes for a transmembrane receptor expressed predominantly in the smooth muscle of vessels.

About 300 missense mutations have been reported in this gene. Besides mutations clearly linked to CADASIL, other variants are of uncertain clinical significance.

We report a case with the c.1490C> T (p.S497L) variant, which in the literature is considered benign; nonetheless, based on biopsy and autopsy data, a possible association with CADASIL may exist.