chr start stop reference nuc variant nuc depth genic status zygosity variant ID 20 4364393 4364394 G A 32 GENIC homozygous 109233385 20 4364561 4364562 A G 23 GENIC homozygous 109074354 20 4365761 4365762 T C 43 GENIC homozygous 109074356