New hope for HER2 cancers: first human trial launches
NCT ID NCT05523947
First seen Jun 24, 2026 · Last updated Jul 17, 2026 · Updated 3 times
Summary
This early-phase trial tests an experimental drug called YH32367 in people with HER2-positive solid tumors that have spread or cannot be removed by surgery. The study has two parts: first, finding a safe dose, then testing that dose in specific cancer types like biliary tract cancer. About 147 participants will be enrolled to check safety, how the drug moves through the body, and whether it shrinks tumors.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- YH32367 (an experimental drug)
- What this could lead to
- If successful, this could point toward a new treatment option for people with HER2-positive cancers that have stopped responding to standard therapies.
- What could go wrong
- This is a very early first-in-human study, so safety and effectiveness are not yet known. The drug may not shrink tumors or could cause unexpected side effects.
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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Aug 2022
- Expected to finish
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Apr 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: \[Dose Escalation Part\] * Pathologically confirmed HER2-positive * Mandatory provision of tumor tissue sample \[Dose Expansion Part\] * Patients who have at least one measurable lesion * Mandatory provision of tumor tissue sample 1. Cohort 1: Pathologically confirmed HER2-positive biliary tract cancer 2. Cohort 2: Pathologically confirmed HER2-positive metastatic solid tumor malignancy other than breast and gastric or gastroesophageal junction adenocarcinoma and biliary tract cancer Exclusion Criteria: * Uncontrolled central nervous system (CNS) metastases * Spinal cord compression * Carcinomatous meningitis * Acute coronary syndromes * Heart failure * Interstitial lung disease (ILD) * Pneumonitis * History of a second primary cancer * Human immunodeficiency virus (HIV) * Active chronic hepatitis B * Hepatitis C * Systemic steroid therapy * Autoimmune 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
16 sites in 3 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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Ajou University Hospital
RECRUITINGSuwon, Gyeonggi-do, 16499, South Korea
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Asan Medical Center
RECRUITINGSeoul, 05505, South Korea
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Austin Health
WITHDRAWNMelbourne, Australia
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Blacktown Hospital
RECRUITINGSydney, Australia
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Breast Cancer Research Centre - WA
WITHDRAWNPerth, Australia
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CHA Bundang Medical Center
RECRUITINGSeongnam-si, Gyeonggi-do, 13496, South Korea
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Catholic University of Korea St. Vincent's Hospital
RECRUITINGSuwon, Gyeonggi-do, 16247, South Korea
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Chungbuk National University Hospital
RECRUITINGCheongju-si, North Chungcheong, 28644, South Korea
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Dana Farber Cancer Institute
RECRUITINGBoston, Massachusetts, 02215, United States
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Gachon Gil University Medical Center
RECRUITINGIncheon, 21565, South Korea
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Gyeongsang National University Hospital
RECRUITINGJinju, Gyeongsangnam-do, 52727, South Korea
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Korea University Anam Hospital
RECRUITINGSeoul, 02841, South Korea
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Samsung Medical Center
RECRUITINGSeoul, 06351, South Korea
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Seoul National University Hospital
RECRUITINGSeoul, 03080, South Korea
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Severance Hospital, Yonsei University Health System
RECRUITINGSeoul, 03722, South Korea
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Southern Oncology Clinical Research Unit
TERMINATEDAdelaide, Australia
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The Catholic University of Korea, St. Mary's hospital
RECRUITINGSeoul, 06591, South Korea
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Ulsan University Hospital
RECRUITINGUlsan, 44437, South Korea
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Vanderbilt Ingram Cancer Center
RECRUITINGNashville, Tennessee, 37232, United States
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