chr start stop reference nuc variant nuc depth genic status zygosity variant ID 1 228691626 228691627 G C 23 GENIC homozygous 108772258 1 228691628 228691629 G C 22 GENIC homozygous 120476111 1 228691636 228691637 G A 21 GENIC homozygous 120476112