We report a 38-year-old Japanese woman who had cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) with a novel mutation (TGT to TAT) at nucleotide position 1241 (C388Y) in exon 7 of the Notch3 gene (NOTCH3 (1,(4)(5)(6)(7). However, the microscopic examination of GOM is hampered by false-negative results (1,4,5), and NOTCH3 screening outside hotspots of the mutations is a time-and cost-consuming method (2,6). Immunostaining with a NOTCH3 monoclonal antibody has been identified to be a highly sensitive and specific technique for the diagnosis of CADASIL (2). In the present study, we report an asymptomatic patient with CA-DASIL with a novel mutation of NOTCH3, which was first diagnosed by the immunostaining of skin biopsy.
Patient and Methods
Case report