AF1q gene structure. (A) AF1q gene contains 2 exons separated by a 9-kb intron. Numbers above the gene represent the nucleotide sequence of the AF1q cDNA. Open reading frame (ORF) is located near the N-terminus of exon 2, proximal to the break-point region. (B) Primers (arrows) and TaqMan probe (solid bar) for the quantitative PCR are represented.