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Phase Ib/II Clinical Trial of Pembrolizumab With Bevacizumab for Metastatic Renal Cell Carcinoma: BTCRC-GU14-003
Journal article   Open access   Peer reviewed

Phase Ib/II Clinical Trial of Pembrolizumab With Bevacizumab for Metastatic Renal Cell Carcinoma: BTCRC-GU14-003

Arkadiusz Z Dudek, Li C Liu, Shilpa Gupta, Theodore F Logan, Eric A Singer, Monika Joshi, Yousef N Zakharia, Joshua M Lang, James K Schwarz, Anas Al-Janadi, …
Journal of clinical oncology, Vol.38(11), pp.1138-1145
04/10/2020
DOI: 10.1200/JCO.19.02394
PMCID: PMC7145584
PMID: 32097091
url
https://doi.org/10.1200/JCO.19.02394View
Published (Version of record) Open Access

Abstract

We hypothesized that bevacizumab will potentiate activity of pembrolizumab. We conducted a phase Ib/II, single-arm, multisite clinical trial of the combination in metastatic renal cell carcinoma (RCC). Patients with metastatic clear cell RCC who experienced progression after at least one systemic therapy (phase Ib) or were treatment naïve (phase II) were enrolled. In phase Ib, pembrolizumab (200 mg) and bevacizumab (10 or 15 mg/kg) were given intravenously every 3 weeks. The primary end point for phase II was overall response rate (ORR). With an 80% statistical power and a type I error probability of 0.1, 48 patients were to be accrued to detect an ORR of 42%. Thirteen patients (ages 33-68 years; median, 55 years) were enrolled in the phase Ib study. No dose-limiting toxicities were reported. Pembrolizumab 200 mg and bevacizumab 15 mg/kg were chosen for phase II. Forty-eight patients (ages 42-84 years; median age, 61 years; 33 males) were accrued for the phase II study. The primary end point was met, with the ORR reaching 60.9% (95% CI, 45.4% to 74.9%), consisting of 1 complete response (CR), 2 CRs in target lesions, 25 partial responses, 18 responses of stable disease, 2 unevaluable responses. Median progression-free survival was 20.7 months (95% CI, 11.3 to 27.4 months). Median overall survival was not reached at the median follow-up of 28.3 months. The most common treatment-related grade 3 toxicities were hypertension and proteinuria. There were two grade 4 toxicities: duodenal ulcer and hyponatremia. Presence of tumor-infiltrating T cells, but not programmed death-ligand 1 expression, in tumor tissue correlated with response. The combination of 200 mg of pembrolizumab and a 15 mg/kg dose of bevacizumab given every 3 weeks is safe and active in metastatic RCC.
 Adult Aged Aged, 80 and over Antibodies, Monoclonal, Humanized - administration & dosage Antibodies, Monoclonal, Humanized - adverse effects Antineoplastic Combined Chemotherapy Protocols - therapeutic use Bevacizumab - administration & dosage Bevacizumab - adverse effects Carcinoma, Renal Cell - drug therapy Carcinoma, Renal Cell - mortality Carcinoma, Renal Cell - pathology Female Humans Kidney Neoplasms - drug therapy Kidney Neoplasms - mortality Kidney Neoplasms - pathology Male Middle Aged Neoplasm Metastasis

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