chr start stop reference nuc variant nuc depth genic status zygosity variant ID 20 5442311 5442312 C G 10 GENIC homozygous 109077986 20 5442312 5442313 C G 10 GENIC homozygous 109077988 20 5443354 5443355 C A 18 GENIC homozygous 109077990