chr start stop reference nuc variant nuc depth genic status zygosity variant ID 1 197904994 197904995 C - 21 GENIC homozygous 61581289 1 197905707 197905708 C A 31 GENIC homozygous 61041127 1 197907138 197907139 C CT 20 GENIC homozygous 61041131