chr start stop reference nuc variant nuc depth genic status zygosity variant ID 1 225233257 225233258 C A 21 GENIC homozygous 120476034 1 225233258 225233259 A C 21 GENIC homozygous 108771603 1 225280508 225280509 C T 38 GENIC possibly homozygous 108556749 1 225280522 225280523 C T 39 GENIC possibly homozygous 108556750