Table 2.

Results obtained with familial association analysis using the presence of the index SNP as additional covariates. The table gives the name of the migraine risk loci, the type of regulatory regions, and the Bonferroni-corrected p values with and without applying the presence of the index SNP as additional covariates

Locus	Type	p value without allele count of index SNP as covariate	p value with allele count of index SNP as covariate
PHACTR1	CpG island	0.044	0.042
KCNK5	PRE	0.011	0.012
ASTN2	PRE	0.011	0.011
RNF213	PRE	5.7·10−3	5.8·10−3