chr start stop reference nuc variant nuc depth genic status zygosity variant ID 20 5536223 5536224 G A 30 GENIC homozygous 45387456 20 5536308 5536309 A G 33 GENIC homozygous 45387458 20 5536719 5536720 T C 26 GENIC homozygous 45387460