Sequential use of targeted therapies for metastatic renal cell carcinoma: A physician survey and chart review of community oncology practices in the United States.

Authors

Nicholas Vogelzang

Nicholas J. Vogelzang

US Oncology Research/Comprehensive Cancer Centers of Nevada, Las Vegas, NV

Nicholas J. Vogelzang , James E. Signorovitch , Peggy L. Lin , Zhimei Liu , Kenneth W. Culver , Jeffrey A. Scott , Sumanta Kumar Pal , Eric Jonasch

Organizations

US Oncology Research/Comprehensive Cancer Centers of Nevada, Las Vegas, NV, Analysis Group, Inc., Boston, MA, Novartis Pharmaceuticals Corporation, East Hanover, NJ, Cardinal Health, Specialty Solutions, Dublin, OH, City of Hope, Duarte, CA, The University of Texas MD Anderson Cancer Center, Houston, TX

Research Funding

No funding sources reported

Background: Multiple targeted agents are available to treat metastatic renal cell carcinoma (mRCC) and no consensus has been reached for optimal treatment sequencing. This study describes physician-reported treatment preferences, reasons for treatment choices, and current treatment patterns for mRCC in the community setting. Methods: A physician survey and retrospective chart review was conducted during May and June 2012 among community-based oncologists or hematologists who had ≥5 mRCC patients under their care in 2011. Charts were reviewed for adult mRCC patients initiated on 2nd-targeted therapy after January 2010 to collect information on current treatment sequence in mRCC patients and reasons for treatment choices. A parallel survey collected physician treatment preferences for 1st-, 2nd-, and 3rd-targeted therapies for mRCC patients with good or poor prognosis. Results: The study included surveys from 36 physicians and charts from 433 mRCC patients. The majority of patients (77%) received a tyrosine kinase inhibitor (TKI) and the rest (23%) received a mammalian target of rapamycin inhibitor (mTOR) as the 1st-targeted therapy. Sunitinib was the most common TKI and temsirolimus was the most common mTOR in the 1st-line setting. Among patients receiving 1st-line TKI, 34% received TKI (pazopanib was most used TKI) and 66% received mTOR (everolimus was most used mTOR) in the 2nd-line. Among 1st-line mTOR users, 94% used TKI (sunitinib was most used) and 6% mTOR (everolimus was most used) for 2nd-line. TKI-mTOR-TKI was the most commonly observed treatment sequence. Physician-stated preferences for 1st and 2nd targeted therapies were largely consistent with the results from the chart review, though actual mTOR use in the 2nd-line was greater than expected. Treatment guidelines and evidence from clinical trials were the top-ranked factors impacting treatment choices. Conclusions: In this large, retrospective chart review, TKI-mTOR-TKI was the most commonly observed treatment sequence for mRCC in the community setting.

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Abstract Details

Meeting

2013 Genitourinary Cancers Symposium

Session Type

Poster Session

Session Title

General Poster Session C: Renal Cancer

Track

Renal Cell Cancer

Sub Track

Renal Cell Cancer

Citation

J Clin Oncol 31, 2013 (suppl 6; abstr 418)

DOI

10.1200/jco.2013.31.6_suppl.418

Abstract #

418

Poster Bd #

F9

Abstract Disclosures

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