chr start stop reference nuc variant nuc depth genic status zygosity variant ID 4 7284290 7284291 G A 53 GENIC homozygous 113434200 4 7285002 7285003 A C 68 GENIC homozygous 113434202 4 7286729 7286730 C 65 GENIC possibly homozygous 128002472