This is an open multicenter, prospective randomised phase III trial evaluating the efficacy of two different schedules of Interferon-alpha2b (IFN-alpha2b) administered in an adjuvant setting after adequate surgery in high risk cutaneous melanoma patients (T4N0M0/TxN1-2M0). The patients have been operated for either a thick primary melanoma (\> 4 mm) without evidence of distant metastasis or have undergone surgery for regional lymph node metastases.
The study consists of a control arm (A) and two treatment arms, B and C. The outcome in arms B and C with adjuvant treatment with IFN-alpha2b will be compared to the outcome of arm A in which the patients will only be observed after the surgery. The primary endpoint is overall survival. Secondary endpoints are relapse-free survival, safety-toxicity and health-related quality of life.