Testing BDC-4182 for advanced gastric and gastroesophageal cancer
Official title: A Phase 1/2, First-in-Human, Dose Escalation and Expansion Study of BDC-4182 as a Single Agent in Patients With Advanced Gastric and Gastroesophageal Cancer
Run by Bolt Biotherapeutics, Inc. · NCT06921837 · Data updated 2026-11-12
This study is testing a new drug called BDC-4182 to see if it's safe and how well it works for people with advanced gastric and gastroesophageal cancer.
Quick facts
| Phase | Phase1; Phase2 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 122 (estimated) |
| Sponsor | Bolt Biotherapeutics, Inc. Industry-sponsored |
| Locations | 16 sites (Darlinghurst, New South Wales and 15 other locations) |
| Status | Recruiting |
| Started | May 26, 2025 |
| Main results expected | May 2027 |
| Study ends | May 2029 |
| Registry record updated | January 27, 2026 |
| Trial ID | NCT06921837 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults with metastatic or unresectable gastric or gastroesophageal cancer who have received prior standard therapies or are intolerant to them.
✕Probably not a fit
Patients with known central nervous system metastases or those without measurable disease may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This is a first-in-human, dose escalation study evaluating the safety and tolerability of BDC-4182 as a single agent in patients with advanced gastric and gastroesophageal cancers. Participants will be enrolled in various dose cohorts until the maximum tolerated dose is identified. The study aims to establish the recommended Phase 2 dose (RP2D) and may include additional participants in backfill cohorts to gather more safety data. The study will also involve biopsies to assess Claudin 18 expression in tumors.
Why it matters
Potential benefit: If successful, this study could provide a new treatment option for patients with advanced gastric and gastroesophageal cancers.
How similar studies have gone: While this approach is novel, other studies targeting similar cancers have shown promise, indicating potential for success.
Who can join: the full rules
Show full inclusion / exclusion criteria
Key Inclusion Criteria: * Has disease that is measurable by Response Evaluation Criteria in Solid Tumors (RECIST) v.1.1. * Subjects must have histologically/cytologically confirmed gastric or gastroesophageal cancer that is metastatic (Stage 4) or unresectable (Stage 3). * Subjects must have received at least 1-2 prior lines of locally available standard therapies or must be intolerant of standard therapies. * For subjects in escalation: If prior Claudin 18 IHC expression is known, the subject must have some degree of Claudin 18 expression as defined as Positive or have expression ≥ 1% of tumor cells IHC ≥ 2+. Consult with Medical Monitor as needed. * Adequate organ function * Agree to have a biopsy prior to enrollment, at acceptable risk in the judgement of the Investigator. If a biopsy is not safely accessible or clinically feasible, an adequate archival tumor sample must be submitted. Key Exclusion Criteria: * Known central nervous system (CNS) metastases except for disease that is asymptomatic, clinically stable, and has not required steroids for at least 14 days before starting study treatment. * Cardiac disease, pulmonary disease, or hepatic disease * Active infection * History of inflammatory eye disease * Residual toxicity from a previous treatment * Any investigational agent or standard anti-cancer therapies within 28 days before starting study treatment or within 5 estimated elimination half-lives, whichever is shorter.
Where it's running
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AUS Site 2
Darlinghurst, New South Wales, Australia Recruiting -
AUS Site 5
Westmead, New South Wales, Australia Recruiting -
AUS Site 1
Birtinya, Queensland, Australia Recruiting -
AUS Site 4
Clayton, Victoria, Australia Recruiting -
AUS Site 3
Heidelberg, Victoria, Australia Recruiting -
SK Site 2003
Seongnam-si, South Korea Recruiting
Show 10 more locations
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SK Site 2001
Seoul, South Korea Recruiting -
SK Site 2002
Seoul, South Korea Recruiting -
SK Site 2004
Seoul, South Korea Recruiting -
SK Site 2005
Seoul, South Korea Recruiting -
TWN Site 9004
Kaohsiung City, Taiwan Recruiting -
TWN Site 9005
Kaohsiung City, Taiwan Recruiting -
TWN Site 9001
Taichung, Taiwan Recruiting -
TWN Site 9003
Taipei, Taiwan Recruiting -
TWN Site 9006
Taipei, Taiwan Recruiting -
TWN Site 9002
Taoyuan, Taiwan Recruiting
Study contacts
- Study coordinator: Bolt Biotherapeutics
- Email: clinicaltrials@boltbio.com
- Phone: +1 650 434 8640
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
-
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HH160 is being tested to see if it is safe and how it behaves in the body, to see if it has early signs of helping various advanced cancers in adults.
-
DISP-10 for advanced colorectal, gastric, and esophageal cancers
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-
BHB810 in advanced gastric and GEJ cancer (early-phase)
This study tests whether BHB810 can be safely given every two weeks to adults with advanced gastric or GEJ adenocarcinoma and looks at its effect, how the drug behaves in the body, and patient responses.
-
Fruquintinib plus nab‑paclitaxel with iparomlimab and tuvonralimab for people with advanced gastric or GEJ cancer after immunotherapy
This trial tests whether adding fruquintinib and two immune drugs (iparomlimab and tuvonralimab) to nab‑paclitaxel helps people with advanced gastric cancer whose disease progressed after first‑line immunotherapy.
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Personalized biomarker-guided therapy to preserve organs in gastroesophageal cancer
This trial tests a biomarker-driven treatment approach that combines chemotherapy, an immune therapy, and targeted drugs to see if some patients can avoid surgery.
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Planned surgery or focused local treatment after chemo for metastatic upper-GI adenocarcinoma with undetectable ctDNA
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.