Vorolanib in the Second-line Treatment of Patients with Unresectable or Metastatic Renal Cell Carcinoma

For those patients who have reached the end point of the study, survival data during treatment with vorolanib is obtained for retrospective analysis. The patients who are still on treatment with vorolanib are followed up closely and survival data is obtained for prospective analysis. After summarizing the results of retrospective and prospective studies, relevant efficacy and safety conclusions will be drawn.