New drug combo targets Hard-to-Treat cancers in early trial
NCT ID NCT06158958
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This early-phase study tested an experimental drug called ABBV-303, alone or with another drug (budigalimab), in adults with advanced solid tumors that had stopped responding to standard treatments. The main goals were to check safety and find the right dose. The study was terminated early, and results are limited.
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
The first testing in people. Mainly checks safety and dose, usually in a small group.
- Participants
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27 people
The number who actually took part.
- Started
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Feb 2024
- Finished
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Oct 2025
- 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.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Participants with Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1. * Laboratory values meeting the protocol's criteria within the screening period (-28 days) prior to the first dose of study drug. * Participants with a diagnosis of a malignant solid tumor by histology (World Health Organization \[WHO\] criteria). * Participants with measurable disease per Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST v1.1). Exclusion Criteria: * Unresolved Grade \> 1 adverse events (AEs) from prior anti-cancer therapy except for alopecia. * Active systemic or uncontrolled local bacterial, fungal, or viral infection requiring antimicrobial therapy. * History of hypersensitivity to the active ingredients or any excipients of ABBV-303 and budigalimab (ABBV-181). * Body weight \< 35 kg.
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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.
Contacts and locations
Locations
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Carolina BioOncology Institute /ID# 254305
Huntersville, North Carolina, 28078, United States
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City of Hope - Orange County Lennar Foundation Cancer Center /ID# 266792
Irvine, California, 92618, United States
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City of Hope /ID# 254303
Duarte, California, 91010, United States
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Hadassah Medical Center-Hebrew University /ID# 254606
Jerusalem, 91120, Israel
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NEXT Oncology /ID# 257395
San Antonio, Texas, 78229, United States
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NYU Langone - Laura and Isaac Perlmutter Cancer Center /ID# 256943
New York, New York, 10016, United States
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National Cancer Center Hospital /ID# 254359
Chuo-ku, Tokyo, 104-0045, Japan
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National Cancer Center Hospital East /ID# 261712
Kashiwa-shi, Chiba, 277-8577, Japan
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Rambam Health Care Campus /ID# 254608
Haifa, 3109601, Israel
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START Midwest /ID# 256945
Grand Rapids, Michigan, 49546-7062, United States
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Shizuoka Cancer Center /ID# 261714
Sunto-gun, Shizuoka, 411-8777, Japan
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South Texas Accelerated Research Therapeutics /ID# 256944
San Antonio, Texas, 78229, United States
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The Chaim Sheba Medical Center /ID# 259408
Ramat Gan, Tel Aviv, 5265601, Israel
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The Ohio State University - The James /ID# 260475
Columbus, Ohio, 43210-1240, United States
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University of Southern California /ID# 254356
Los Angeles, California, 90033, United States
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University of Texas MD Anderson Cancer Center /ID# 254308
Houston, Texas, 77030, United States
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Wakayama Medical University Hospital /ID# 254361
Wakayama, Wakayama, 641-8510, Japan
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Washington University-School of Medicine /ID# 262943
St Louis, Missouri, 63110, United States
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Other studies related to the condition(s) this trial covers.
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