chr start stop reference nuc variant nuc depth genic status zygosity variant ID 4 170428091 170428092 A G 24 GENIC homozygous 615794277 4 170428602 170428603 A G 30 GENIC homozygous 615794278 4 170428733 170428734 G C 29 GENIC homozygous 615794279