chr start stop reference nuc variant nuc depth genic status zygosity variant ID 4 216127609 216127610 C T 20 GENIC homozygous 511283083 4 216127942 216127943 G T 26 GENIC homozygous 511283084 4 216128085 216128086 C T 26 GENIC possibly homozygous 511283085