New drug combo targets Hard-to-Treat cancers in early trial
NCT ID NCT06975293
First seen Jun 25, 2026 · Last updated Aug 26, 2026 · Updated 5 times
Summary
This early-phase trial tests a new drug called STC-15, either alone or combined with an immunotherapy drug (toripalimab), in people with advanced solid tumors or certain sarcomas. The study aims to check safety and whether the drugs shrink tumors. About 107 participants will be enrolled at multiple centers.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- STC-15 (a METTL3 inhibitor) and toripalimab (an immunotherapy drug)
- What this could lead to
- If successful, this could point toward a new treatment option for advanced cancers and sarcomas that have stopped responding to other therapies.
- What could go wrong
- This is an early-phase trial with a small number of participants, so the drug may not prove effective or safe enough for wider use. Side effects are possible, and the combination therapy may not work better than existing treatments.
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
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Phase 1/2
Runs two stages together: safety and dose first, then whether the treatment works.
- Participants
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About 107 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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May 2025
- Expected to finish
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Jun 2028
An estimate. End dates often move.
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Key Inclusion Criteria: * Estimated life expectancy ≥ 3 months. * ECOG performance status 0 or 1. * Measurable disease according to RECIST v1.1 as assessed by the local site investigator/radiology. * Documented radiologic assessment of progression on the prior therapy before study entry. * Have adequate organ function. * Have the ability to swallow, retain, and absorb oral medication. Inclusion Criteria (Phase 2 Monotherapy Cohorts): * Have histologic or cytologic confirmation of advanced sarcoma of the selected histologic subtype that is not amenable to local curative therapy. Participant must have received at least 2, but no more than 4 prior lines of systemic therapy. * Pre-treatment and on-treatment biopsy if medically feasible. Key Exclusion Criteria: * Pregnant and lactating women. * Received prior systemic anticancer therapy including investigational agents within 4 weeks or 5 half-lives, whichever is shorter, prior to first IMP administration. * Participants who have not recovered from all AEs due to previous therapies to Grade ≤ 1 or baseline, according to NCI-CTCAE v5.0. Exceptions include: alopecia, Grade ≤ 2 neuropathy, and endocrine-related AEs Grade ≤ 2 who are stable on treatment or hormone replacement. * History of (non-infectious) pneumonitis/interstitial lung disease that required steroids or the presence of ongoing pneumonitis/interstitial lung disease). * Clinically significant cardiovascular disease or condition. * Known active CNS metastases and/or leptomeningeal disease.
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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.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
10 sites. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Dana Farber Cancer Institute
RECRUITINGBoston, Massachusetts, 02215, United States
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MD Anderson Cancer Center
NOT_YET_RECRUITINGHouston, Texas, 77030, United States
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NEXT Dallas
RECRUITINGIrving, Texas, 75039, United States
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NEXT Houston
RECRUITINGHouston, Texas, 77054, United States
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NEXT Oncology
RECRUITINGSan Antonio, Texas, 78229, United States
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NEXT Oncology
RECRUITINGFairfax, Virginia, 22031, United States
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Northwell Health Cancer Institute
RECRUITINGLake Success, New York, 11042, United States
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START Midwest
RECRUITINGGrand Rapids, Michigan, 49546, United States
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The START Center
RECRUITINGSan Antonio, Texas, 78229, United States
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University of California, San Francisco
RECRUITINGSan Francisco, California, 94158, United States
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Other studies related to the condition(s) this trial covers.
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- New injectable drug tested for safety in Hard-to-Treat solid tumors
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- Can a Blood-Flow-Blocking drug stall a rare sarcoma?