chr start stop reference nuc variant nuc depth genic status zygosity variant ID 4 181872420 181872421 A - 22 GENIC homozygous 751551106 4 181872427 181872428 A - 22 GENIC homozygous 751551107 4 181872443 181872444 A - 23 GENIC homozygous 751551108