chr start stop reference nuc variant nuc depth genic status zygosity variant ID 20 4363946 4363947 A G 13 GENIC homozygous 109296089 20 4364561 4364562 A G 9 GENIC homozygous 109074354 20 4365761 4365762 T C 6 GENIC homozygous 109074356