chr start stop reference nuc variant nuc depth genic status zygosity variant ID 2 74091537 74091538 C T 4 GENIC homozygous 109831227 2 74091923 74091924 G T 3 GENIC homozygous 109831228 2 74092244 74092245 T G 3 GENIC homozygous 110710340