chr start stop reference nuc variant nuc depth genic status zygosity variant ID 20 5536223 5536224 G A 16 GENIC heterozygous 45387456 20 5536308 5536309 A G 14 GENIC heterozygous 45387458 20 5536719 5536720 T C 20 GENIC heterozygous 45387460