chr start stop reference nuc variant nuc depth genic status zygosity variant ID 19 49515970 49515971 T G 21 GENIC homozygous 109723796 19 49515971 49515972 G T 21 GENIC homozygous 109723798 19 49516031 49516032 G T 18 GENIC homozygous 109890108