chr start stop reference nuc variant nuc depth genic status zygosity variant ID 4 72503036 72503037 C T 21 GENIC homozygous 112709732 4 72503039 72503040 C T 21 GENIC homozygous 112709734 4 72503204 72503205 A G 14 GENIC homozygous 112709736 4 72503363 72503364 T G 18 GENIC homozygous 112709738