chr start stop reference nuc variant nuc depth genic status zygosity variant ID 20 13500354 13500356 GG -- 7 GENIC heterozygous 45687590 20 13500355 13500356 G - 7 GENIC heterozygous 45873442 20 13501677 13501678 G A 21 GENIC homozygous 45873444