Clinical trial Recruiting at 8 sites Phase 1 Interventional Ages 18 and up

Testing ONC-841 for advanced solid tumors

Official title: Safety, Pharmacokinetics (PK), and Efficacy of ONC 841 in Advanced Solid Tumors

Run by OncoC4, Inc. · NCT06352359 · Data updated 2026-11-12

This study is testing a new antibody drug called ONC-841 to see if it can help people with advanced solid tumors by boosting their immune response against the cancer.

Quick facts

PhasePhase 1
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment72 (estimated)
SponsorOncoC4, Inc.
Industry-sponsored
Drugs / interventionschemotherapy, immunotherapy, prednisone
Locations8 sites (Sacramento, California and 7 other locations)
StatusRecruiting
StartedAugust 23, 2024
Main results expectedSeptember 30, 2027
Study endsSeptember 30, 2027
Registry record updatedJune 25, 2026
Trial IDNCT06352359 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include adults with advanced or metastatic solid tumors who have measurable disease and adequate organ function.

Probably not a fit

Patients with uncontrolled adverse events from previous cancer therapies or those with certain health conditions 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 Phase I open-label, dose-escalation study evaluates the safety, pharmacokinetics, and efficacy of ONC-841, an investigational antibody drug, in patients with advanced or metastatic solid tumors. The study will administer ONC-841 intravenously at seven different dose levels ranging from 0.03 mg/kg to 30 mg/kg, given once every four weeks. The drug targets Siglec10 on immune cells to enhance the immune response against tumor cells by blocking signals that prevent immune cell activity. Participants will be monitored for safety and treatment response throughout the trial.

Why it matters

Potential benefit: If successful, this treatment could enhance the immune system's ability to target and eliminate advanced solid tumors.

How similar studies have gone: While this approach is novel, similar immunotherapy strategies have shown promise in other studies targeting immune modulation in cancer treatment.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Must have ECOG score ≤ 1. The body weight should be ≥40 kg.
* A histological or cytological diagnosis of solid tumors and metastatic disease or locally advanced disease.
* Must have measurable target lesion according to RECIST V1.1.
* Adequate organ function as determined by laboratory tests.
* Voluntary agreement to participate as evidenced by written informed consent.
* Female patient: negative pregnancy test and agreement on contraceptive methods.
* Male patient: agreement on contraceptive methods.
* Agree to give archival or other diagnostic tissue recut slides or an optional new tumor biopsy.

Exclusion Criteria:

* Patients who have not recovered to NCI CTCAE grade ≤ 1 from an adverse event (AE) due to cancer therapeutics except the chemotherapy-associated peripheral neuropathy (motor or sensory) or alopecia. Patients with ongoing and adequately controlled endocrine immune-related AEs are considered stable and eligible for enrollment.
* The washout period for cancer therapeutic drugs should be 5 half-life or 21 days for chemotherapy, whichever is shorter; or 28 days for monoclonal antibody therapy. Palliative radiotherapy for painful metastases or metastases in potentially sensitive locations (e.g., epidural space) ≥ 7 days prior to the first dose of study drug. Best supportive care, such as thyroxine, insulin, steroid replacement treatment, blood transfusion and therapy for non-cancer conditions are allowed.
* Patients who are currently enrolled in any other clinical trial testing an investigational agent or device, or with concurrent anticancer treatment (except palliative bone-directed radiotherapy), immune therapy, or cytokine therapy or anticipated to require another antineoplastic therapy during the study.
* Patients who are on chronic systemic steroid therapy at doses higher than 10 mg/day prednisone or equivalent within 7 days before first treatment.
* Patients who have active brain metastases or leptomeningeal metastases. Patients who have active brain metastases or leptomeningeal metastases. Patients are eligible if brain metastases are adequately treated, and patients are asymptomatic or neurologically stable (except for residual signs or symptoms related to the central nervous system (CNS) treatment). Note: Patients with previously treated brain metastases may participate provided they are radiologically stable (i.e. no evidence of progression for ≥4 weeks by repeat imaging performed during study screening), clinically stable, and not requiring steroid treatment within 14 days before the first dose of study treatment.
* Patient with a different cancer other than the one treated under this protocol, which requires systemic treatments within 24 months prior to C1D1.
* Patient has history of grade ≥3 allergic or hypersensitivity to IV infusion medications, or severe allergic reactions to food, pollen, oral medications, or atopic dermatitis or asthmatic episodes that required hospitalization.
* Within past 6 months with history of significant cardiovascular acute myocardial infarction, acute coronary syndrome, ischemic or hemorrhagic stroke, revascularization procedures, acute pulmonary embolism or any disorders resulted in LVEF \< 40% at the time of screening or colitis, small bowel obstruction, hepatitis or pancreatitis adrenal insufficiency, or severe immunotherapy related AE (irAE≥ grade 3).
* Patients who have acute infections which require systemic treatments within 14 days prior to C1D1.
* Patients who, in the opinion of the treating Investigator, have a history or current evidence of any condition, therapy, or laboratory abnormality that might confound the results of the study, interfere with the patient's participation for the full duration of the study, or make study participation not in the best interest of the patient, in the opinion of the treating Investigator. Investigators should discuss the case with the Sponsor and/or study leaders.
* Patients with known psychiatric or substance abuse disorders may interfere with cooperation with the requirements of the trial.
* Patients who are pregnant or breastfeeding or plan pregnancy or fathering the child during the study or within 6 months after the last dosing of study drug

Where it's running

  • University of California at Davis Cancer Center
    Sacramento, California, United States
    Recruiting
  • UF Health Cancer Center, University of Florida
    Gainesville, Florida, United States
    Recruiting
  • AdventHealth Medical Group Oncology Research at Celebration
    Kissimmee, Florida, United States
    Recruiting
  • Norton Cancer Center
    Louisville, Kentucky, United States
    Recruiting
  • Rogel Cancer Center, University of Michigan
    Ann Arbor, Michigan, United States
    Recruiting
  • Thomas Jefferson University Hospital
    Philadelphia, Pennsylvania, United States
    Recruiting
Show 2 more locations
  • MD Anderson Cancer Center
    Houston, Texas, United States
    Recruiting
  • Huntsman Cancer Institute, University of Utah
    Salt Lake City, Utah, United States
    Recruiting

Study contacts

  • Principal investigator: Tianhong Li, MD, PhD — University of California, Davis
  • Study coordinator: Pan Zheng, MD, PhD
  • Email: pzheng@oncoc4.com
  • Phone: (240) 552-5193

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.