MIA and migraine disorder: Additionally, we detected nominally significant associations for a CNV on chromosome 19 (41,381,588–41,387,347 bp, deletion frequency = 0.054 and duplication frequency = 0.022) with the pQTL of the MIA protein level (P = 2.38 × 10–6) and migraine (ICD-10 code G43; P = 3.14 × 10–5).