chr start stop reference nuc variant nuc depth genic status zygosity variant ID 19 56016888 56016889 G A 22 GENIC homozygous 977622374 19 56017281 56017282 C T 22 GENIC homozygous 977622375 19 56020806 56020807 C T 23 GENIC homozygous 977622376