chr start stop reference nuc variant nuc depth genic status zygosity variant ID 15 2636970 2636971 G T 20 GENIC homozygous 112784394 15 2648423 2648424 A G 29 GENIC homozygous 112446039 15 2648489 2648490 T C 29 GENIC homozygous 112446041