The majority of RP-BPHs (71.1%) and RP-PCas (66.7%) exhibited unchanged copy numbers of IGF2. However, in TUR-BPH samples, 28.6% (n = 2) showed gain, 28.6% (n = 2) loss and 42.9% (n = 3) normal copy numbers of IGF2 (Fig. 5b). This evidence concerns the gene IGF2 and benign prostatic hyperplasia.