For Healthcare Professionals

A Study of Nivolumab Plus Ipilimumab, Ipilimumab Alone, or Cabazitaxel in Men With Metastatic Castration-Resistant Prostate Cancer (CheckMate 650)


About the study

The purpose of this study is to evaluate the effectiveness, safety and tolerability of nivolumab followed by ipilimumab, in subjects with metastatic castration resistant prostate cancer (mCRPC).

Who can take part

You may be eligible to participate in the study if you meet the following criteria:


  1. Eastern Cooperative Oncology Group (ECOG) performance status 0-1
  2. Current evidence of metastatic disease documented by either bone lesions on radionuclide bone scan and/or soft tissue lesions on computerized tomography/magnetic resonance imaging (CT/MRI).
  3. Ongoing androgen deprivation therapy (ADT) with a Gonadotropin-releasing hormone (GnRH) analogue or a surgical/medical castration with testosterone level of ≤1.73nmol/L (50ng/dL) For crossover phase for participants originally randomized to Arm D3 or Arm D4 only:
  4. Previously randomized to Arm D3 or D4; had histologic confirmation of adenocarcinoma of the prostate and evidence of Stage IV disease (as defined by American Joint Committee of Cancer criteria (AJCC criteria) prior to randomization


  1. Presence of visceral metastases in the liver
  2. Active brain metastases or leptomeningeal metastases
  3. Active, known, or suspected autoimmune disease or infection
  4. Prior treatment with an anti-PD-1, anti-PD-L1, anti-PD-L2, or anti-CTLA-4 antibody, or any other antibody or drug specifically targeting T-cell co-stimulation or checkpoint pathways For crossover phase for participants originally randomized to Arm D3 or Arm D4 only:
  5. Prior radiation therapy within 14 days prior to first dose of nivolumab combined with ipilimumab
  6. Have received systemic anti-cancer therapy after the last dose of study treatment (ipilimumab or cabazitaxel) Other protocol-defined inclusion/exclusion criteria apply
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Study Locations

Enter your ZIP code/Postal code/PIN code to locate study sites near you:

How to Apply

Contact the study center to learn if this study is a good match for you.
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Study’s details


Prostate Cancer

Age (in years)

18 - 200


Phase 2

Participants needed


Est. Completion Date

Oct 2026

Treatment type



Bristol-Myers Squibb identifier


Study number


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