Clinical trial Recruiting at 16 sites Phase1; Phase2 Interventional Ages 18 and up

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.

More Gastric Cancer Adenocarcinoma Metastatic trials

Quick facts

PhasePhase1; Phase2
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment122 (estimated)
SponsorBolt Biotherapeutics, Inc.
Industry-sponsored
Locations16 sites (Darlinghurst, New South Wales and 15 other locations)
StatusRecruiting
StartedMay 26, 2025
Main results expectedMay 2027
Study endsMay 2029
Registry record updatedJanuary 27, 2026
Trial IDNCT06921837 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

  • 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
  • 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

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.