[Cytokine-based and targeted therapy of metastatic renal cell carcinoma--a current analysis].

The systemic treatment of renal cell cancer represents a challenge for uro-oncologists. Although no internationally recognised treatment regime has been defined, cytokine therapy has been the standard of care for metastatic disease. The growing understanding of the relevant mechanisms in the molecular biology of renal cell carcinoma has led to the development of targeted therapies. Novel tyrosine kinase and angiogenesis inhibitors have had a beneficial effect on progression-free and overall survival in patients with advanced renal cell cancer and represented a significant progress. Even though several important aspects regarding treatments and combinations of these drugs with each other as well as with cytokines still remain unclear, cytokine therapy will probably become less important as a first-line treatment. With increasing therapeutic options becoming available as potential new standards and with the old standards being poorly defined, a critical analysis of the role of different systemic therapies for renal cell carcinoma is warranted. A better knowledge of molecular markers and their prognostic relevance could allow the rational use of different targeted therapies in individual patients in the future. Until such therapies become available, the systemic treatment options should be selected carefully in individual patients.