chr start stop reference nuc variant nuc depth genic status zygosity variant ID 1 78741646 78741647 C T 22 GENIC homozygous 144251377 1 78742662 78742662 G 17 GENIC possibly homozygous 149510730 1 78743453 78743454 C T 18 GENIC homozygous 144251378