CD4 and cerebral cavernous malformation: In total, 30% (24 out of 80) of patients admitted with CCM died, of those whose CD4 was ≤ 100 cell/mm3, 31.6% (18 out of 57) died, whilst of those with a CD4 > 100 cell/mm3, 20% (2 out of 10) died, as did 30.8% (4 out of 13) of those whose CD4 count was unknown.