This is a Study to Evaluate the Safety and Tolerability of ABL503, and to Determine the Maximum Tolerated Dose (MTD) and Recommended Phase 2 Dose (RP2D) of ABL503 in Subjects with Any Progressive Locally Advanced or Metastatic Solid Tumors
Public ClinicalTrials.gov record NCT04762641. 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 Phase 1 Dose Escalation and Expansion Study of ABL503, a Bispecific Antibody of 4-1BB and PD-L1, As a Single Agent in Subjects with Any Progressive Locally Advanced (unresectable) or Metastatic Solid Tumors
Study identification
- NCT ID
- NCT04762641
- Recruitment status
- Recruiting
- Study type
- Interventional
- Phase
- Phase 1
- Lead sponsor
- ABL Bio, Inc.
- Industry
- Enrollment
- 100 participants
Conditions and interventions
Conditions
Interventions
- ABL503 Drug
Drug
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
- Mar 31, 2021
- Primary completion
- Nov 29, 2025
- Completion
- Jun 14, 2026
- Last update posted
- Feb 5, 2025
2021 – 2026
United States locations
- U.S. sites
- 5
- U.S. states
- 3
- U.S. cities
- 5
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| City of Hope | Duarte | California | 91010 | Recruiting |
| USC | Los Angeles | California | 90033 | Recruiting |
| UCLA | Santa Monica | California | 90404 | Recruiting |
| Sarah Cannon Research Institute at HealthONE | Denver | Colorado | 80218 | Recruiting |
| NEXT Oncology | San Antonio | Texas | 78229 | Recruiting |
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 3 non-U.S. sites.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT04762641, 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 Feb 5, 2025 · Synced Jul 23, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT04762641 live on ClinicalTrials.gov.