chr start stop reference nuc variant nuc depth genic status zygosity variant ID 4 135948349 135948350 G A 18 GENIC homozygous 112838517 4 135949104 135949105 C T 34 GENIC homozygous 112838521 4 135949825 135949826 T C 17 GENIC homozygous 112838522