chr start stop reference nuc variant nuc depth genic status zygosity variant ID 12 42768049 42768050 A T 32 GENIC homozygous 66755340 12 42768453 42768454 T C 22 GENIC homozygous 66755342 12 42771511 42771512 C A 7 GENIC homozygous 66755346