CABOPRE: Phase II study of cabozantinib prior to cytoreductive nephrectomy (CN) in locally advanced and/or metastatic renal cell carcinoma (mRCC).

Authors

null

Guillermo de Velasco

Department of Medical Oncology, University Hospital 12 de Octubre, i + 12, Madrid, Spain., Madrid, Spain

Guillermo de Velasco , Borja González , Teresa Alonso , Alvaro Pinto , Juan Francisco Rodriguez-Moreno , Juan Manuel Sepúlveda , Jose Carlos Villa , Natalia Miranda , Félix Guerrero , Daniel E. Castellano

Organizations

Department of Medical Oncology, University Hospital 12 de Octubre, i + 12, Madrid, Spain., Madrid, Spain, Hospital Universitario Marqués de Valdecilla, Santander, Spain, Hospital Ramón y Cajal, Madrid, Spain, Hospital Universitario La Paz, Madrid, Spain, Hospital Universitario HM Sanchinarro, Madrid, Spain, Hospital Universitario 12 de Octubre, Madrid, Spain, University General Hospital Ciudad Real, Ciudad Real, Spain, Hospital 12 de Octubre, Madrid, Spain

Research Funding

Pharmaceutical/Biotech Company

Background: Cabozantinib is a small molecule tyrosine kinase inhibitor (TKI) of VEGFR2, MET and AXL that has shown a statistically significant improvement for mRCC patients in all three endpoints of clinical efficacy (objective response rate [ORR], progression free survival [PFS], and overall survival [OS]) in a phase III randomized trial compared to everolimus, as well as a significant clinical benefit in PFS and ORR over sunitinib as first-line therapy in patients with IMDC intermediate- or poor-risk. Although no robust evidence is available, CN remains as the standard of care in patients who will be treated with VEGF TKI. CABOPRE is a multicenter, non-randomized, uncontrolled phase II trial that evaluates the efficacy and safety of cabozantinib as perioperative therapy in patients with advanced RCC who are candidates for CN. Methods: Eligible patients are aged ≥ 18 years, mRCC with a component of clear cell, suitable for CN with acceptable risk for surgery, PS 0-1, no prior systemic therapy. Cabozantinib 60mg PO QD is administered for 12 weeks before CN (cabozantinib is stopped at least 72 hours before CN). A 14-day treatment break is required after surgery and then cabozantinib is continued until progression disease or toxicity. The primary endpoint is ORR by RECIST 1.1 at 12 weeks after initiation of therapy. Secondary endpoints include PFS at 12 months and OS. Based on Simon two-stage minimax design (p0 = 0.25, p1 = 0.45, alpha = 0.05, power = 90%) up to 50 patients will be recruited consecutively. Tumor biopsies and peripheral blood will be collected to assess changes in tumor microenvironment at 3 different time points: 1) at baseline, prior to initiation of cabozantinib, 2) before cytoreductive nephrectomy 3) at disease progression. Biomarkers study will include, but not limited to the expression of c-MET and AXL in exosomes derived from tumor cells.

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Abstract Details

Meeting

2018 ASCO Annual Meeting

Session Type

Poster Session

Session Title

Genitourinary (Nonprostate) Cancer

Track

Genitourinary Cancer—Kidney and Bladder

Sub Track

Kidney Cancer

Citation

J Clin Oncol 36, 2018 (suppl; abstr TPS4603)

DOI

10.1200/JCO.2018.36.15_suppl.TPS4603

Abstract #

TPS4603

Poster Bd #

420b

Abstract Disclosures

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