With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: In CADASIL , the short arm of chromosome 19 causes an abnormal accumulation of Notch 3 .
text_B: Mutations in the Notch 3 gene ( on the short arm of chromosome 19 ) cause an abnormal accumulation of Notch 3 at the cytoplasmic membrane of vascular smooth-muscle cells both in cerebral and extracerebral vessels , seen as granular osmiophilic deposits on electron microscopy.
SUPPORTS.