chr start stop reference nuc variant nuc depth genic status zygosity variant ID 1 229454579 229454580 G A 27 GENIC homozygous 109003127 1 229454629 229454630 T C 29 GENIC homozygous 109003128 1 229454937 229454938 C T 31 GENIC homozygous 109003129