Introduction: The NOTCH3 gene encodes for an evolutionarily conserved protein, whose functions encompass both embryonic cell proliferation and adult tissue-specific differentiation. Among others, a pivotal role in maintaining functional integrity of neurovascular unit (NVU) is supported by the association of several NOTCH3 gene mutations with neuroimaging markers of cerebral small vessel disease (SVD). Indeed, a pathogenic role of NOTCH3 is recognised in cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL).
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