chr start stop reference nuc variant nuc depth genic status zygosity variant ID 18 63187747 63187748 C A 13 GENIC homozygous 110546243 18 63187748 63187749 A C 13 GENIC homozygous 110379985 18 63187749 63187750 G T 13 GENIC homozygous 110546245