In addition, an analysis of about 30,000 patients from the 2022 GWAS with a precise diagnosis of the type of migraine (eg, MO or MwA) showed that three risk variants were specific for MwA (including a SNP in CACNA1A the FHM1 gene), two were specific for MO and nine were associated with both types. Here, CACNA1A is linked to migraine disorder.