chr start stop reference nuc variant nuc depth genic status zygosity variant ID 20 47103905 47103908 TTT --- 16 GENIC heterozygous 753524539 20 47104749 47104750 G - 21 GENIC homozygous 753524540 20 47112457 47112459 CA -- 8 GENIC heterozygous 753524541