This is a Phase III, multicenter, randomized, open-label study designed to evaluate the
efficacy and safety of atezolizumab given in combination with cabozantinib versus
cabozantinib alone in participants with inoperable, locally advanced, or metastatic renal
cell carcinoma (RCC) who experienced radiographic tumor progression during or after Immune
Checkpoint Inhibitor (ICI) treatment in the metastatic setting.
Inclusion Criteria:
- Histologically confirmed locally advanced or metastatic clear cell or non-clear cell
(papillary and unclassified only) RCC. RCC with sarcomatoid features is allowed.
- Radiographic disease progression during or following treatment with ICI for locally
advanced or metastatic RCC either in first- or second-line treatment. ICI is defined
by anti-PD-L1 or anti-PD1 antibody including atezolizumab, avelumab, pembrolizumab, or
nivolumab. Only patients for whom the immediate preceding line of therapy was an ICI
are allowed.
- Measurable disease per RECIST v1.1
- Evaluable IMDC risk score
- Archival tumor specimen, and pretreatment tumor tissue from fresh biopsy at screening,
if clinically feasible
- KPS score of >=70
- Adequate hematologic and end-organ function
- Negative HIV test at screening
- Negative hepatitis B testing at screening
- Negative hepatitis C virus (HCV) antibody test at screening, or positive HCV antibody
test followed by a negative HCV RNA test at screening
- For women of childbearing potential: agreement to remain abstinent (refrain from
heterosexual intercourse) or use contraception and agreement to refrain from donating
eggs
- For men: agreement to remain abstinent (refrain from heterosexual intercourse) or use
a condom, and agreement to refrain from donating sperm
Exclusion Criteria:
- Treatment with anti-cancer therapy within 28 days prior to initiation of study
treatment
- Patients received cabozantinib at any time prior to screening
- Patients who received more than 1 regimen of ICIs
- Patients who received more than 2 prior lines of therapy in the advanced or metastatic
setting
- Patients who received ICI in the adjuvant setting (adjuvant VEGFR-TKI except
cabozantinib is allowed)
- Patients who have received a mammalian target of rapamycin (mTOR) inhibitor in the
advanced or metastatic setting
- Symptomatic, untreated, or actively progressing CNS metastases
- History of leptomeningeal disease
- Uncontrolled pleural effusion, pericardial effusion, or ascites requiring recurrent
drainage procedures
- Uncontrolled or symptomatic hypercalcemia or symptomatic hypercalcemia requiring
continued use of bisphosphonate therapy or denosumab
- History of malignancy other than renal carcinoma within 5 years prior to screening,
with the exception of malignancies with a negligible risk of metastasis or death
- Radiotherapy for RCC within 14 days prior to Day 1 of Cycle 1
- Active tuberculosis
- Major surgical procedure, other than for diagnosis, within 4 weeks prior to initiation
of study treatment, or anticipation of need for a major surgical procedure during the
study
- Pregnancy or breastfeeding, or intention of becoming pregnant during study treatment
or within 5 months after final dose of atezolizumab and 4 months after final dose of
cabozantinib
- Severe infection within 4 weeks prior to initiation of study treatment, including, but
not limited to, hospitalization for complications of infection, bacteremia, or severe
pneumonia
- Uncontrolled hypertension defined as sustained blood pressure >150 mm Hg systolic or >
90 mm Hg diastolic despite optimal antihypertensive treatment
- Significant cardiovascular disease (such as New York Heart Association Class II or
greater cardiac disease, MI, or cerebrovascular accident) within 3 months prior to
initiation of study treatment, unstable arrhythmia, or unstable angina
- Significant vascular disease (e.g., aortic aneurysm requiring surgical repair or
recent peripheral arterial thrombosis) within 6 months prior to Day 1 of Cycle 1
- History of congenital QT syndrome
- History or presence of an abnormal ECG that is clinically significant in the
investigator's opinion
- Concomitant anticoagulation with coumarin agents (e.g., warfarin), direct thrombin
inhibitor dabigatran, direct factor Xa inhibitor betrixaban, or platelet inhibitors
(e.g. clopidogrel)