Introduction: About 50% of patients with multiple myeloma are older than 65 years and are not eligible for high-dose therapy, which has proved to be more efficacious than standard-dose chemotherapy in young patients.
Current knowledge and key points: Apart from high-dose therapy, no clear therapeutic advance has been achieved in the past 20 years, and melphalan-prednisone combinations remain reference treatments for many patients with multiple myeloma. Despite a great number of clinical trials, the use of interferon alpha is still controversial. The role of high-dose dexamethasone has been recently established and we are currently comparing dexamethasone alone, melphalan-dexamethasone and dexamethasone-interferon alpha treatments in a multicenter randomized trial (IFM 95-01). Bisphosphonates have also emerged as an efficacious and well tolerated adjuvant treatment. Optimal use of recently released bisphosphonates at various stages of the disease will possibly lead to a clear therapeutic advantage.
Future prospects and projects: Other drugs, such as erythropoietin or interferon gamma require further evaluation. The recent implication of metalloproteinases in multiple myeloma and the efficacy of metalloproteinase inhibitors in animal models and phase I/II clinical studies in solid tumors provide a strong rationale for the clinical evaluation of these agents in multiple myeloma.