HMGA2 and neoplasm: The ensuing HMGA2 fusion transcripts code for putative proteins which contain amino acid residues 1–83 of HMGA2 (accession number NP_003474.1) corresponding to exons 1–3 of the gene and amino acid residues from the fused sequences (cases 3, 4, 7 and 8) or, in the tumor of case 5, 94 amino acid residues are translated from exons 1–4 of HMGA2 and joined with residues from a fused sequence from chromosome 12 (Fig. 4B).