chr start stop reference nuc variant nuc depth genic status zygosity variant ID 20 4827233 4827234 C T 103 GENIC homozygous 130032865 20 4828429 4828430 G A 81 GENIC homozygous 130032866 20 4828531 4828532 G A 78 GENIC homozygous 130032867