"Real world" treatment of metastatic renal cell carcinoma in a joint community-academic cohort: progression-free survival over three lines of therapy.

Published

Journal Article

BACKGROUND: New targeted therapeutics approved for metastatic renal cell carcinoma (mRCC) offer multiple options in each line of therapy; however, there are few prospective data beyond the first-line settings, and overall comparative effectiveness data are limited. In the targeted therapy era, progression-free survival (PFS) has been the most common regulatory end point for demonstrating the benefit of new therapies. PATIENTS AND METHODS: Drawing on a joint community-academic retrospective mRCC registry, we analyzed all patients who had undergone at least 1 line of systemic therapy (N = 325) for PFS. Patients were grouped according to treatment choice (sorafenib, sunitinib, temsirolimus, everolimus, and "other") for up to 3 lines of therapy. PFS by treatment choice and line of therapy was evaluated using Kaplan-Meier and Cox regression analyses. RESULTS: PFS was longest in patients treated with sunitinib in the first and second lines of therapy. First-line PFS for sorafenib, sunitinib, temsirolimus, everolimus, and "other" was 6.9, 8.9, 4.2, not analyzed (too few patients), and 10.8 months, respectively. Second-line PFS was 4.6, 7.0, 3.2, 3.8, and 4.1 months, respectively. Third-line PFS was 4.5, 4.6, 9.9, 4.2, and 2.9, months, respectively. The risk of progression in patients treated with temsirolimus was about twice that of patients treated with sunitinib in the first and second lines of therapy. CONCLUSION: Patients treated with sunitinib had the longest PFS in the first and second lines of therapy. PFS from practice-based data appear consistent with trial-based expectations; however, practice variation was still evident.

Full Text

Duke Authors

Cited Authors

  • Harrison, MR; George, DJ; Walker, MS; Chen, C; Korytowsky, B; Kirkendall, DT; Stepanski, EJ; Abernethy, AP

Published Date

  • December 2013

Published In

Volume / Issue

  • 11 / 4

Start / End Page

  • 441 - 450

PubMed ID

  • 23856102

Pubmed Central ID

  • 23856102

Electronic International Standard Serial Number (EISSN)

  • 1938-0682

Digital Object Identifier (DOI)

  • 10.1016/j.clgc.2013.05.002

Language

  • eng

Conference Location

  • United States