chr start stop reference nuc variant nuc depth genic status zygosity variant ID 20 4877311 4877312 A G 36 GENIC homozygous 109075624 20 4877313 4877314 G C 33 GENIC homozygous 109075626 20 4880159 4880160 A G 62 GENIC homozygous 109075628 20 4880845 4880846 G A 55 GENIC homozygous 109075630