While the presence of any CH mutation is associated with intracerebral hemorrhage (ICH) (OR = 1.21, P = 0.02), specific mutations, SRSF2 and ASXL1 are protective against ICH (OR = 0.9, P = 0.04) and nontraumatic subarachnoid hemorrhage (OR = 0.92, P = 0.03), respectively. This evidence concerns the gene C4B and subarachnoid hemorrhage.