chr start stop reference nuc variant nuc depth genic status zygosity variant ID 20 4696952 4696953 C G 52 GENIC heterozygous 109542099 20 4696954 4696955 A T 54 GENIC heterozygous 109542101 20 4697850 4697851 C A 78 GENIC heterozygous 109233591