We used the NHGRI GWAS catalog44 to determine which of our 20 SNPs (and their LD partners) were in LD with SNPs for which genome-wide significant associations have been previously reported. Since the GWAS catalog does not always include the most recent GWAS results available, we included additional recent GWAS studies. We used the tool HaploReg45 to identify nonsynonymous variants in LD with any of the 20 SNPs or their LD partners.