chr start stop reference nuc variant nuc depth genic status zygosity variant ID 12 17902146 17902147 T C 22 GENIC homozygous 115275236 12 17903934 17903935 T C 19 GENIC homozygous 115421501 12 17904217 17904218 T C 8 GENIC homozygous 115421503