Patient receiving sunitinib according the clinician's independent decision as first-line treatment of advanced renal cell carcinoma (RCC) will be asked for informed consent. Treatment with sunitinib will start and end solely on the treating clinicians and the patients independent discretion. Consenting patients will prospectively answer standardized quality of life questionnaires (15D, EQ-5D) during the treatment. Data on health care resource utilisation will be collected prospectively (outpatient visits, hospital stays, concomitant drugs, investigations, sick-leaves, travels). In addition, after treatment failure anti-cancer drugs, hospital stays and date of death will be recorded.