chr start stop reference nuc variant nuc depth genic status zygosity variant ID 16 20531098 20531099 A C 18 GENIC homozygous 47327908 16 20534730 20534731 C A 23 GENIC possibly homozygous 48181740 16 20540818 20540819 C T 18 GENIC homozygous 48181741