As hypertensive arteriopathy and CAA are the most common sporadic types of microangiopathy in ICH, several factors associated with CAA have been identified as predictors of post‐ICH cognitive impairment, including age, the ApoE ε4 allele, lobar hematoma, and cSS (Moulin et al., 2016; Potter et al., 2021). The gene discussed is APOE; the disease is Cognitive impairment.