Testing Cabozantinib With or Without Atezolizumab in Patients With Advanced Papillary Kidney Cancer, PAPMET2 Trial

Running, not enrolling · Phase 2

Conditions studied: Metastatic Papillary Renal Cell Carcinoma, Stage IV Renal Cell Cancer AJCC v8

In brief

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.

Key facts

Study ID

NCT05411081

Run by

National Cancer Institute (NCI)

People needed

200

Starts

2023-03-24

Expected to finish

2027-07-01

Last updated by the study team

2026-08-04

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Participants must have a histologically confirmed diagnosis of metastatic papillary renal cell carcinoma (PRCC), either type 1 or type 2. (NOTE: A designation of type 1 or type 2 should be made by the local pathologist if possible but is not required). Mixed histologies which contain type 1 or type 2 along with any other RCC histology/histologies will be allowed provided that they contain a papillary component
• Participants must have measurable disease per RECIST 1.1 criteria. All measurable lesions must be assessed by CT or MRI within 28 days prior to registration. All non-measurable lesions must be assessed by CT or MRI, or nuclear medicine bone scan within 42 days prior to registration. The CT from a combined positron emission tomography (PET)/CT may be used to document only non-measurable disease unless it is of diagnostic quality. If there is clinical suspicion for bone metastases at the time of enrollment (at the discretion of the investigator), bone scan must be performed at baseline (within 42 days prior to registration)
• Participants with new or progressive brain metastases (active brain metastases) must not require immediate central nervous system (CNS) specific treatment at the time of study registration or anticipated during the first cycle of therapy. Patients with leptomeningeal disease are excluded from enrolling
• Participants with measurable disease, per RECIST version (v)1.1, must be present outside the CNS
• Participants must have no history of intracranial hemorrhage or spinal cord hemorrhage
• Participants must not have undergone stereotactic radiotherapy within 7 days prior to initiation of study treatment, whole-brain radiotherapy within 14 days prior to initiation of study treatment, or neurosurgical resection within 28 days prior to initiation of study treatment
• Participants must not have ongoing requirements for corticosteroids as therapy for CNS disease
• Participants, if needed, must receive a stable dose of anti-convulsant therapy
• Participants must not have cavitating pulmonary lesions
• Participants must not have uncontrolled pleural effusions, pericardial effusions, or ascites requiring recurrent drainage procedures (once monthly or more frequently). Participants with indwelling catheters (e.g., PleurX [registered trademark]) are allowed
• Participants must not have tumor invading the gastrointestinal (GI) tract or evidence of endotracheal or endobronchial tumor within 28 days prior to registration
• Participants must not have evidence of tumor invading or encasing any major blood vessels
• Participants must not have had major surgery within 28 days prior to registration, and participants must have recovered from any adverse effects of surgery
• Participants must not have had prior treatment with cabozantinib for any reason
• Participants must not have had prior treatment or adjuvant therapy with PD-1/PD-L1 checkpoint inhibitors for any reason within the past 6 months
• Participants must not have received more than one prior systemic therapy for advanced or metastatic renal cell carcinoma with the exception of another VEGF inhibitor Food and Drug Administration (FDA)-approved for advanced RCC (i.e., pazopanib, bevacizumab, sorafenib or axitinib). If a participant develops metastatic disease within six months of discontinuation of adjuvant therapy, this will constitute one prior systemic therapy for advanced or metastatic RCC. If a patient develops metastatic disease and more than six months has elapsed since discontinuation of adjuvant therapy, this will not constitute prior systemic therapy for advanced or metastatic RCC
• Participants must not take within 14 days prior to registration, nor plan to take while on protocol treatment, any strong CYP3A4 inhibitors (e.g. boceprevir, cobicistat, danoprevir, elvitegravir/RIT, fluvoxamine, indinavir, itraconazole, ketoconazole, lopinavir/RIT, nefazodone, nelfinavir, posaconazole, ritonavir, telaprevir, telithromycin, tipranavir/RIT, or voriconazole,); Please refer to https://drug-interactions.medicine.iu.edu/MainTable.aspx for the updated CYP3A4 inhibitors or inducers
• Participants must not take within 14 days prior to registration, nor plan to take while on protocol treatment, any strong CYP3A4 inducers (e.g. avasimibe, phenytoin, rifampin, rifabutin); Please refer to https://drug-interactions.medicine.iu.edu/MainTable.aspx for the updated CYP3A4 inhibitors or inducers
• Participants must complete all prior radiation therapy at least 14 days prior to registration. Participants must have recovered to =< grade 1 from all associated toxicities at the time of registration unless the toxicity is determined to be not clinically significant by the registering investigator
• Participants must not be receiving or planning to receive any other investigational agents at time of registration
• Participants must not have been diagnosed with a clinically significant autoimmune disease, exceptions such as diabetes, eczema, and vitiligo are allowed. Other non-clinically significant autoimmune diseases are allowed if approved by the registering investigator
• Participants must not be on steroid doses > 10 mg prednisone equivalent. Replacement steroid doses for adrenal insufficiency will be allowed. Also, short duration steroid therapy to prevent allergic reactions are acceptable (e.g. prior to CT imaging)
• Participants must be >= 18 years of age
• Participants must have a complete physical examination and medical history within 28 days prior to registration
• Participants must have a Zubrod performance status of 0-2

Where it is running

• Cancer Center at Saint Joseph's — Phoenix, Arizona, United States
• University of Arkansas for Medical Sciences — Little Rock, Arkansas, United States
• Kaiser Permanente-Anaheim — Anaheim, California, United States
• Kaiser Permanente-Baldwin Park — Baldwin Park, California, United States
• Kaiser Permanente-Bellflower — Bellflower, California, United States
• City of Hope Comprehensive Cancer Center — Duarte, California, United States
• Epic Care-Dublin — Dublin, California, United States
• Epic Care Partners in Cancer Care — Emeryville, California, United States
• Kaiser Permanente-Fontana — Fontana, California, United States
• Kaiser Permanente South Bay — Harbor City, California, United States
• Kaiser Permanente-Irvine — Irvine, California, United States
• Kaiser Permanente Los Angeles Medical Center — Los Angeles, California, United States
• Kaiser Permanente West Los Angeles — Los Angeles, California, United States
• Contra Costa Regional Medical Center — Martinez, California, United States
• Kaiser Permanente-Ontario — Ontario, California, United States
• Kaiser Permanente - Panorama City — Panorama City, California, United States
• Kaiser Permanente-Riverside — Riverside, California, United States
• University of California Davis Comprehensive Cancer Center — Sacramento, California, United States
• Kaiser Permanente-San Diego Zion — San Diego, California, United States
• Kaiser Permanente-San Marcos — San Marcos, California, United States
• Epic Care Cyberknife Center — Walnut Creek, California, United States
• Kaiser Permanente-Woodland Hills — Woodland Hills, California, United States
• MedStar Georgetown University Hospital — Washington D.C., District of Columbia, United States
• Saint Alphonsus Cancer Care Center-Boise — Boise, Idaho, United States
• Banner MD Anderson Cancer Center — Gilbert, Arizona, United States

Full record on ClinicalTrials.gov

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