chr start stop reference nuc variant nuc depth genic status zygosity variant ID 6 125997952 125997953 A G 27 GENIC homozygous 54691762 6 125998225 125998227 TT -- 28 GENIC heterozygous 54691763 6 125998233 125998236 TTG --- 21 GENIC homozygous 54691764