A Study to Test Different Doses of Obrixtamig in Patients With Small Cell Lung Cancer and Other Neuroendocrine Tumours That Are Positive for DLL3
Public ClinicalTrials.gov record NCT04429087. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A First-In-human Phase I, Non-randomized, Open-label, Multi-center Dose Escalation Trial of Obrixtamig (BI 764532) Administered by Parenteral Route in Patients With Small Cell Lung Carcinoma and Other Neuroendocrine Neoplasms Expressing DLL3
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
This study is open to adults with small cell lung cancer and other neuroendocrine cancers that are positive for the tumour marker delta-like 3 (DLL3). The study is in people with advanced cancer for whom previous treatment was not successful or no standard treatment exists. The purpose of this study is to find out the highest dose of obrixtamig and the best treatment schedule that people can tolerate. Obrixtamig is an antibody-like molecule (DLL3/CD3 bispecific) that may help the immune system fight cancer. In this study, obrixtamig is given to people for the first time. Interim clinical data are available for obrixtamig. Participants get obrixtamig either weekly or once every 3 weeks. If there is benefit for the participants and if they can tolerate it, the treatment is given for a maximum of 3 years. During this time, participants visit the study site about 20 times depending on the response to the treatment. Doctors record any unwanted effects and regularly check the general health of the participants.
Study identification
- NCT ID
- NCT04429087
- Recruitment status
- Active, not recruiting
- Study type
- Interventional
- Phase
- Phase 1
- Enrollment
- 300 participants
Conditions and interventions
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Jul 28, 2020
- Primary completion
- Aug 30, 2026
- Completion
- Sep 30, 2027
- Last update posted
- Aug 20, 2026
2020 – 2027
United States locations
- U.S. sites
- 4
- U.S. states
- 4
- U.S. cities
- 4
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Winship Cancer Institute | Atlanta | Georgia | 30322 | — |
| University of Maryland School of Medicine | Baltimore | Maryland | 21201 | — |
| Washington University School of Medicine | St Louis | Missouri | 63108 | — |
| University of Pittsburgh Medical Center | Pittsburgh | Pennsylvania | 15232 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
Non-U.S. locations
This page focuses on the U.S. directory. The official record also lists 8 non-U.S. sites.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT04429087, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Aug 20, 2026 · Synced Sep 3, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT04429087 live on ClinicalTrials.gov.