chr start stop reference nuc variant nuc depth genic status zygosity variant ID 18 66262818 66262819 C T 15 GENIC homozygous 939682977 18 66262832 66262833 A C 18 GENIC homozygous 939682978 18 66262899 66262900 C T 23 GENIC homozygous 939682979