chr start stop reference nuc variant nuc depth genic status zygosity variant ID 20 3817421 3817422 G A 18 GENIC homozygous 125173475 20 3817523 3817524 G A 14 GENIC homozygous 125173476 20 3818719 3818720 C T 13 GENIC homozygous 125173477