The association between serum levels of KLK6 and S100B (an established serum marker of brain injury) was analyzed in 8 of 13 patients with aSAH (patients 2, 3, 4, 5, 6, 8, 9 and 12), 5 women and 3 men, including patients with good recovery (n = 1), moderate disability (n = 2), severe disability (n = 2) and patients who died (n = 3). This evidence concerns the gene KLK6 and injury.