New hope for Hard-to-Treat cancers? early trial of HMPL-A251 begins
NCT ID NCT07228247
First seen Jun 26, 2026 · Last updated Jul 08, 2026 · Updated 3 times
Summary
This early-phase trial is testing an experimental drug called HMPL-A251 in adults with advanced or metastatic solid tumors that have high levels of a protein called HER2. The study aims to find a safe dose and see if the drug can shrink tumors. About 147 participants will receive the drug by IV infusion until their disease gets worse or side effects become too severe.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- HMPL-A251 (an experimental antibody drug given by IV infusion)
- What this could lead to
- If it works, this could point toward a new treatment option for people with advanced HER2-positive solid tumors that have stopped responding to other therapies.
- What could go wrong
- This is a very early, first-in-human trial with only 147 participants. The drug may not shrink tumors or could cause serious side effects. Success in this small study does not guarantee it will work for everyone.
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 147 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Dec 2025
- Expected to finish
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Dec 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.
Inclusion Criteria: 1. Histologically confirmed unresectable advanced or metastatic disease. 2. Have at least one measurable lesion per RECIST v1.1; 3. Life expectancy ≥ 12 weeks; 4. Eastern Cooperative Oncology Group (ECOG) performance status (PS) of 0-1; 5. Weight ≥ 35 kg; Exclusion Criteria: 1. An established diagnosis of type I diabetes mellitus or uncontrolled type II diabetes mellitus. 2. Use of strong inhibitors of cytochrome P450 3A4 enzyme (CYP3A4), and inhibitors of P-glycoprotein (P-gp) and breast cancer resistance protein (BCRP) within 5 elimination half-lives or 2 weeks (whichever is longer) before the first dose of study drug; 3. Toxicity from prior anti-tumor therapy has not recovered to Grade 1 or baseline prior to the first dose of study drug (except alopecia). Participants with chronic Grade 2 toxicities may be eligible after discussion between the investigator and Sponsor Medical Monitor (e.g., Grade 2 chemotherapy-induced neuropathy); 4. Baseline blood amylase or lipase exceeds the normal range and are judged by the investigators to be clinically significant; 5. Spinal cord compression, leptomeningeal disease, or clinically active central nervous system (CNS) metastases, defined as untreated or symptomatic, or requiring therapy with corticosteroids or anticonvulsants to control associated symptoms; 6. Major surgery within 28 days prior to the first dose of study drug. Participants must have recovered adequately from the toxicity and/or complications from the intervention prior to the first dose of study drug(s);
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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
15 sites in 2 countries. 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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BRCR Global
RECRUITINGPlantation, Florida, 33322, United States
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Cleveland Clinic Taussig Cancer Center
RECRUITINGCleveland, Ohio, 44195, United States
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Florida Clinical Trials Group LLC (Plantation)
RECRUITINGPlantation, Florida, 33322, United States
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Florida Clinical Trials Group LLC (Tamarac)
NOT_YET_RECRUITINGTamarac, Florida, 33321, United States
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Fudan University Shanghai Cancer Center
NOT_YET_RECRUITINGShanghai, China
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Henan Cancer Hospital
RECRUITINGZhengzhou, China
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Hunan Cancer Hospital
RECRUITINGChangsha, China
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Memorial Sloan Kettering Cancer Center
NOT_YET_RECRUITINGNew York, New York, 10065, United States
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Northwest Medical Specialties, PLLC
NOT_YET_RECRUITINGTacoma, Washington, 98405, United States
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Peking University First Hospital
RECRUITINGBeijing, China
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SCRI HealthONE
RECRUITINGDenver, Colorado, 80218, United States
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START New Jersey
NOT_YET_RECRUITINGEast Brunswick, New Jersey, 08816, United States
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Sun Yat-sen University Cancer Center
RECRUITINGGuangzhou, China
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The First Affiliated Hospital of Anhui Medical University
RECRUITINGHefei, China
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The First Hospital of China Medical University
NOT_YET_RECRUITINGShenyang, China
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Immune cells from your own tumor: a new hope for advanced cancer?
- Smart chemo: new drug aims to hit HER-2 cancers harder
- New hope for Hard-to-Treat cancers: targeted drug enters human trials
- New hope for advanced cancer: experimental drug HMPL-A580 enters human trials
- New drug JAB-8263 tested in patients with advanced cancers
- Engineered immune cells take on Hard-to-Treat cancers