chr start stop reference nuc variant nuc depth genic status zygosity variant ID 20 2038788 2038789 G A 37 GENIC homozygous 109370064 20 2039346 2039347 T C 17 GENIC homozygous 109065963 20 2039925 2039926 C T 20 GENIC homozygous 109370066