chr start stop reference nuc variant nuc depth genic status zygosity variant ID 18 16171439 16171440 G A 1 GENIC homozygous 540671183 18 16171450 16171451 C - 1 GENIC homozygous 698115246 18 16171508 16171509 G A 20 GENIC heterozygous 540671184