chr start stop reference nuc variant nuc depth genic status zygosity variant ID 1 83991893 83991894 C T 18 GENIC homozygous 984105861 1 83992502 83992503 G A 25 GENIC homozygous 984105862 1 83992887 83992888 T C 20 GENIC homozygous 984105863