Lead SNP rs6438857 (at chr3q21.2, PCPASSOC = 2.64 × 10−22, 1.77 × 10−23, 2.55 × 10−14 for DBP, SBP, and PP, respectively based on SHet statistic) implicating ITGB5 was the only locus that was shared between migraine and all the three BP measurements. The gene discussed is ITGB5; the disease is migraine disorder.