chr start stop reference nuc variant nuc depth genic status zygosity variant ID 3 20269686 20269687 A T 46 GENIC homozygous 136650768 3 20269760 20269761 C T 41 GENIC homozygous 136650769 3 20269782 20269783 C T 42 GENIC homozygous 136650770