Genomic positions of selected MACC1 tagging SNPs. MACC1 is located on the minus strand of chromosome 7. The MACC1 contains seven exons (E1-E7) and six introns. Coding regions are shown as black boxes and non-coding exons as white boxes. Positions of the genotyped MACC1 SNPs are relative to the first nucleotide of the MACC1 gene as given in the NCBI reference sequence NT_079592.2. All selected SNPs are located in intronic regions.