chr start stop reference nuc variant nuc depth genic status zygosity variant ID 16 81731721 81731722 C T 26 GENIC homozygous 791560279 16 81746211 81746212 C T 21 GENIC heterozygous 791560280 16 81746218 81746219 C T 21 GENIC heterozygous 791560281