A Phase 2 interventional study of Atezolizumab and Biospecimen Collection in Metastatic Papillary Renal Cell Carcinoma and Stage IV Renal Cell Cancer AJCC v8, sponsored by National Cancer Institute (NCI). Active, not recruiting at 198 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-10-01.
Sponsored by National Cancer Institute (NCI) · Phase 2, Interventional, and Treatment
This phase II trial compares the effect of atezolizumab in combination with usual treatment with cabozantinib to cabozantinib alone in patients with papillary renal cell carcinoma that has spread from where it first started (primary site) to other places in the body (metastatic). Papillary renal cell carcinoma (PRCC) is a type of kidney cancer that forms in the lining of the tiny tubes in the kidney that return filtered substances that the body needs back to the blood and remove extra fluid and waste as urine. Most papillary tumors look like long, thin finger-like growths under a microscope. It is also called papillary kidney cancer or PRCC. Immunotherapy with monoclonal antibodies, such as atezolizumab, may help the body's immune system attack the tumor and may interfere with the ability of tumor cells to grow and spread. Cabozantinib is in a class of medications called kinase inhibitors. It works by blocking the action of an abnormal protein that signals tumor cells to multiply and may also prevent the growth of new blood vessels that tumors need to grow. By these actions it may help slow or stop the spread of tumor cells. Combination therapy with atezolizumab and cabozantinib may shrink the tumor and allow a longer survival time in patients with metastatic renal cell carcinoma.
PRIMARY OBJECTIVE:
I. To compare progression-free survival in participants with metastatic papillary renal cell carcinoma (mPRCC) randomized to cabozantinib (cabozantinib S-malate) with atezolizumab versus cabozantinib alone.
SECONDARY OBJECTIVES:
I. To compare overall survival in participants with mPRCC randomized to cabozantinib with atezolizumab versus cabozantinib alone.
II. To compare Response Evaluation Criteria in Solid Tumors (RECIST) objective response rate (confirmed and unconfirmed, complete and partial response) in participants with mPRCC randomized to cabozantinib with atezolizumab versus cabozantinib alone.
III. To evaluate the quantitative and qualitive adverse events observed in each treatment arm.
BANKING OBJECTIVE:
I. To bank biospecimens for future correlative studies.
OUTLINE: Patients are randomized to 1 of 2 arms.
ARM I: Patients receive cabozantinib S-malate orally (PO) once daily (QD) on days 1-21 of each cycle. Cycles repeat every 21 days in the absence of disease progression or unacceptable toxicity. Patients also undergo computed tomography (CT) or magnetic resonance imaging (MRI) and blood and urine sample collection throughout the trial. Patients may also undergo bone scan throughout the trial.
ARM II: Patients receive cabozantinib S-malate PO QD on days 1-21 and atezolizumab intravenously (IV) over 30-60 minutes on day 1 of each cycle. Cycles repeat every 21 days in the absence of disease progression or unacceptable toxicity. Patients also undergo CT scan or MRI and blood and urine sample collection throughout the trial. Patients may also undergo bone scan throughout the trial.
After completion of study treatment, patients are followed up every 3 months for 2 years and then every 6 months for up to 5 years.
1,966 studies on the registry are indexed under Carcinoma, Renal Cell; 378 are open to participants now.
This study's planned enrollment of 200 is above the median of 42 across 1,481 interventional studies indexed under Carcinoma, Renal Cell.
Browse Carcinoma, Renal Cell studies →National Cancer Institute (NCI) is the lead sponsor of 3,506 studies on the registry; 334 are open to participants now.
Of its 402 completed or terminated interventional studies of FDA-regulated products, 365 (91%) have results posted.
Counted across the registry records on this site, refreshed daily.
Inclusion Criteria:
Participants must be informed of the investigational nature of this study and must sign and give informed consent in accordance with institutional and federal guidelines
Patients receive cabozantinib S-malate PO QD on days 1-21 of each cycle. Cycles repeat every 21 days in the absence of disease progression or unacceptable toxicity. Patients also undergo CT scan or MRI and blood and urine sample collection throughout the trial. Patients may also undergo bone scan throughout the trial.
Procedure: Biospecimen Collection · Procedure: Bone Scan · Drug: Cabozantinib S-malate · Procedure: Computed Tomography · Procedure: Magnetic Resonance Imaging
Patients receive cabozantinib S-malate PO QD on days 1-21 and atezolizumab IV over 30-60 minutes on day 1 of each cycle. Cycles repeat every 21 days in the absence of disease progression or unacceptable toxicity. Patients also undergo CT scan or MRI and blood and urine sample collection throughout the trial. Patients may also undergo bone scan throughout the trial.
Biological: Atezolizumab · Procedure: Biospecimen Collection · Procedure: Bone Scan · Drug: Cabozantinib S-malate · Procedure: Computed Tomography · Procedure: Magnetic Resonance Imaging
Given IV
Also known as: MPDL 3280A, MPDL 328OA, MPDL-3280A, MPDL3280A, MPDL328OA, RG 7446, RG-7446, RG7446, RO 5541267, RO-5541267, RO5541267, Tecentriq
Undergo collection of blood and urine samples
Also known as: Biological Sample Collection, Biospecimen Collected, Sample Collection, Specimen Collection
Undergo bone scans
Also known as: Bone Scintigraphy
Given PO
Also known as: BMS-907351, Cabometyx, Cometriq, XL 184, XL-184, XL184
Undergo CT scans
Also known as: CAT, CAT Scan, Computed Axial Tomography, Computerized Axial Tomography, Computerized axial tomography (procedure), Computerized Tomography, Computerized Tomography (CT) scan, CT, CT Scan, Diagnostic CAT Scan, Diagnostic CAT Scan Service Type, tomography
Undergo MRI
Also known as: Magnetic Resonance, Magnetic Resonance Imaging (MRI), Magnetic resonance imaging (procedure), Magnetic Resonance Imaging Scan, Medical Imaging, Magnetic Resonance / Nuclear Magnetic Resonance, MR, MR Imaging, MRI, MRI Scan, MRIs, NMR Imaging, NMRI, Nuclear Magnetic Resonance Imaging, sMRI, Structural MRI
Progression free survival
A proportional hazards model will be used to evaluate the experimental arm compared to the control arm, adjusted for the stratification factors as covariates in the model. A one-sided p-value =\< 0.05 will indicate statistical significance. Participants last known to be alive and progression free are censored at date of last contact.
Time frame: From date of registration to date of first documentation of progression or symptomatic deterioration, or death due to any cause, assessed up to 5 years
Overall survival
Will be estimated by the Kaplan-Meier method, and a stratified log-rank test will be used to compare the treatment arms. Participants last known to be alive are censored at date of last contact.
Time frame: From date of registration to date of death due to any cause, assessed up to 5 years
Objective response rate
Will be estimated to within +/- 11% (95% confidence interval).
Time frame: Up to 5 years
Incidence of adverse events
Will be estimated to within +/- 11% (95% confidence interval). Will utilize the National Cancer Institute Common Terminology Criteria for Adverse Events version 5.0 for toxicity and serious adverse event reporting.
Time frame: Day 1 of each cycle
Showing the first 100 of 198 sites.
Plan to share: Yes — NCI is committed to sharing data in accordance with NIH policy. For more details on how clinical trial data is shared, access the link to the NIH data sharing policy page.
No publications or documents are linked to this record.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
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