chr start stop reference nuc variant nuc depth genic status zygosity variant ID 20 4852503 4852504 C A 19 GENIC homozygous 109233659 20 4852961 4852962 T G 30 GENIC homozygous 109233660 20 4853449 4853450 C T 21 GENIC homozygous 109233661