Abstract
NOTCH3 mutations have been described to cause cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL). Here, we report 2 CADASIL patients from a Chinese family. Whole genome sequencing was performed on the two CADASIL patients. The novel variant c.128G>C in exon 2 of NOTCH3 was identified and confirmed through PCR-Sanger sequencing (Human Genome Variation Society nomenclature: HGVS: NOTCH3 c.128G>C; p.Cys43Ser). The heterozygous NOTCH3 variant cause a cysteine to serine substitution at codon 43. According to the variant interpretation guideline of American College of Medical Genetics and Genomics (ACMG), this variant was classified as “pathogenic”. Other variants in HTRA1, COL4A1 and COL4A2 were also found, they were classified as “benign”.
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