TMPRSS2 and prostate carcinoma: Yet other types of fusions juxtapose the promoter of certain tissue-specific, inducible or highly expressed genes; for example, the prostate-specific, androgen-inducible genes TMPRSS2 or SLC45A3 fused in frame with the proto-oncogenes ERG or BRAF, respectively, generate the TMPRSS2-ERG and SLC45A3-BRAF gene fusions in prostate cancer.