The combined analysis of the discovery and replication samples confirmed genome‐wide significant (GWS) evidence of an association between BD and the calcium voltage‐gated channel subunit alpha1C gene (CACNA1C), and identified a GWS intronic variant in the Odd Oz/ten‐m homolog 4 gene (ODZ4; also known as tenascin‐M4 [TENM4]), rs12576775 (P=4.4 × 10−8).9 Both Green et al.10 and Mühleisen et al.11 later showed further evidence for an association between BD and the same SNP (P=6.20 × 10−9 and 4.46 × 10−9, respectively). This evidence concerns the gene CACNA1C and Behcet disease.