UPP2 and migraine disorder: In our study among the Han Chinese population in Taiwan, several novel variants were identified to be associated with migraine in a two-stage GWAS [12], including rs655484 in disks large homolog 2 (DLG2) and rs3781545 in GDNF family receptor alpha-1 (GFRA1), rs10803531 in G protein-coupled receptor 39 (GPR39), and rs7565931 in uridine phosphorylase 2 (UPP2).