chr start stop reference nuc variant nuc depth genic status zygosity variant ID 4 17907637 17907638 A G 8 GENIC homozygous 57266471 4 17908011 17908012 C T 11 GENIC homozygous 56770908 4 17908746 17908747 G A 17 GENIC possibly homozygous 56770911