Summary Overexpression of transforming growth factor-4 isoforms (TGF-f1, -P2, -,B3) has been previously reported in human melanoma cell lines and tumours. The aim of the present study was to evaluate the plasma levels of TGF-f isoforms in melanoma patients. Significantly elevated levels of TGF-,1l (4.2 x the controls, P= 0.0094) and of TGF-,2 (1.5 x the controls, P= 0.012) but not of TGF-13 were measured in patients with disseminated but not locoregional melanoma. These results indicate systemic circulation of potentially immunosuppressive peptides of the TGF-P family in end-stage melanoma patients.

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Our study demonstrated that DLPDT is similar to CPDT in terms of long-term efficacy and recurrence rates in the treatment of face and scalp AKs. DLPDT demonstrated a better tolerability profile as it was associated with lower pain and less severe adverse events.