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Extension Study for Participants in Studies That Include Belzutifan (MK-6482-043/LITESPARK-043)

Extension Study for Participants in Studies That Include Belzutifan (MK-6482-043/LITESPARK-043)

Recruiting
18 years and older
All
Phase 3

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Overview

Researchers are looking for new ways to treat advanced solid tumors and von Hippel-Lindau (VHL)-related tumors:

  • Advanced means the cancer has spread to other parts of the body (metastatic) or cannot be removed with surgery
  • Solid tumors are cancers mostly in body organs and tissues, not in the blood or other body liquids
  • VHL-related tumors are tumors caused by VHL disease. VHL disease is passed down from parents to children and people with VHL disease have a higher chance of getting certain types of cancer

Researchers want to learn about the long-term effects of a trial medicine called belzutifan. Belzutifan, also called MK-6482, is designed to block a protein that helps tumors grow and survive. This is an extension trial, which means only people who were in certain other belzutifan trials (called parent trials) may be able to join. The goal of this trial is to learn how long people live after they start taking belzutifan.

Eligibility

Inclusion Criteria:

The main inclusion criteria include but are not limited to the following:

  • Participants with advanced solid tumors or von Hippel-Lindau-related neoplasms who are participating in belzutifan-containing studies and on active treatment in a belzutifan parent study.

Exclusion Criteria:

The main exclusion criteria include but are not limited to the following:

  • Has an on-going serious adverse event in the parent study, unless no longer hospitalized and considered clinically stable.
  • Is currently on a dose interruption due to an Adverse Event (AE) in the parent study; once treatment has been resumed in the parent study, the participant is eligible to enroll.

Study details
    Von Hippel-Lindau Disease
    Carcinoma
    Renal Cell

NCT07405164

Merck Sharp & Dohme LLC

13 May 2026

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FAQs

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.

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