chr start stop reference nuc variant nuc depth genic status zygosity variant ID 3 7861974 7861975 A G 34 GENIC homozygous 136628315 3 7863154 7863155 A C 69 GENIC homozygous 136628316 3 7869381 7869382 T C 56 GENIC homozygous 136628317