New hope for rare cancers: drug targets genetic weakness
NCT ID NCT06390839
First seen Jun 24, 2026 · Last updated Jul 17, 2026 · Updated 2 times
Summary
This phase II trial tests the drug palbociclib in 43 patients with advanced cancers that have extra copies of the CDK4 or CDK6 genes. The drug works by blocking signals that tell cancer cells to multiply. Researchers will measure how many patients' tumors shrink or stop growing for at least 6 months.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- palbociclib (a kinase inhibitor pill that blocks cancer cell growth signals)
- What this could lead to
- If successful, this could provide a targeted treatment option for patients with certain hard-to-treat cancers that have CDK4 or CDK6 gene changes.
- What could go wrong
- This is a small, early-phase trial (43 patients) with no control group, so results may not apply broadly. Palbociclib can cause side effects like low blood counts and fatigue.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
-
43 people
The number who actually took part.
- Started
-
Mar 2017
- Expected to finish
-
Jan 2027
An estimate. End dates often move.
- Lead sponsor
-
A government research agency
The lead sponsor is the US National Institutes of Health.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 years and older
- Sex
-
Anyone
- Healthy volunteers
-
Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Patients must have met applicable eligibility criteria in the Master MATCH Protocol EAY131/ NCI-2015-00054 prior to registration to treatment subprotocol * Patients must have CDK4 amplification or CDK6 amplification, or another aberration, as determined via the MATCH Master Protocol * Patients must have an electrocardiogram (ECG) within 8 weeks prior to treatment assignment and must have no clinically important abnormalities in rhythm, conduction or morphology of resting ECG (e.g. complete left bundle branch block, third degree heart block) * Patients must not have breast cancer, mantle cell lymphoma, myeloma, or liposarcoma * Patients must not have known hypersensitivity to palbociclib or compounds of similar chemical or biologic composition * Patients with known or symptoms of left ventricular dysfunction will be excluded * Patients must not have received prior therapy with a CDK4 or CDK6 inhibitor (including but not limited to palbociclib, abemaciclib, or ribociclib) * Patients must not be using drugs or foods that are known potent CYP3A4 inhibitors or inducers, or are CYP3A substrates with narrow therapeutic indices
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
ECOG-ACRIN Cancer Research Group
Philadelphia, Pennsylvania, 19103, United States
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