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Long-term Safety and Efficacy Extension Study for Participants With Advanced Tumors Who Are Currently on Treatment or in Follow-up in a Pembrolizumab (MK-3475) Study (MK-3475-587/KEYNOTE-587)

Studying long-term safety of pembrolizumab for advanced tumor patients.

Recruiting
18 years and older
All
Phase 3

This study looks at the long-term safety and effectiveness of pembrolizumab, a medicine for advanced tumors. The study involves people who were part of earlier pembrolizumab studies. Pembrolizumab is a type of cancer treatment known as immunotherapy, which helps the body's immune system fight cancer.

Participants will join one of three phases based on their previous study phase:

  • First Course Phase: Up to 35 doses every 3 weeks or 17 doses every 6 weeks of pembrolizumab.
  • Survival Follow-up Phase: Monitors participants post-treatment.
  • Second Course Phase: Up to 17 doses every 3 weeks or 8 doses every 6 weeks if needed.

Participants must meet specific health criteria to join. There's no exclusion, but for Second Course Phase, severe allergies to pembrolizumab, recent live vaccines, or certain health conditions might prevent participation.

  • Study Length: About 2 years, with dosing every 3 or 6 weeks.
  • Requirements: Must have been in a previous pembrolizumab study.
  • Risks: Possible side effects from pembrolizumab and lenvatinib.
Study details
    Solid Tumors
    Hematologic Malignancies

NCT03486873

Merck Sharp & Dohme LLC

16 March 2025

Step 1 Get in touch with the nearest study center
What happens next?
  • You can expect the study team to contact you via email or phone in the next few days.
  • Sign up as volunteer  to help accelerate the development of new treatments and to get notified about similar trials.

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Learn more about clinical trials

What is a clinical trial?

A clinical trial is a study designed to test specific interventions or treatments' effectiveness and safety, paving the way for new, innovative healthcare solutions.

Why should I take part in a clinical trial?

Participating in a clinical trial provides early access to potentially effective treatments and directly contributes to the healthcare advancements that benefit us all.

How long does a clinical trial take place?

The duration of clinical trials varies. Some trials last weeks, some years, depending on the phase and intention of the trial.

Do I get compensated for taking part in clinical trials?

Compensation varies per trial. Some offer payment or reimbursement for time and travel, while others may not.

How safe are clinical trials?

Clinical trials follow strict ethical guidelines and protocols to safeguard participants' health. They are closely monitored and safety reviewed regularly.
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