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DBC-664 in Adult Patients With Solid Tumors

A Phase 1a/1b Open Label, Multicenter, Dose Escalation and Dose Expansion Study of the Safety, Pharmacokinetics, Pharmacodynamics, and Activity of DBC-664 in Adult Patients With Locally Advanced or Metastatic Solid Tumors

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07705035
Enrollment
210
Registered
2026-07-15
Start date
2026-07-17
Completion date
2030-04-01
Last updated
2026-08-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Endometrial Adenocarcinoma, Gastric/Esophageal/Gastroesophageal Junction (GEJ) Adenocarcinoma, Lung Adenocarcinoma, Malignant Germ Cell Tumor, Ovarian Adenocarcinoma, Urothelial Carcinoma

Brief summary

DBC-664-ONC-101 is a first-in-human Phase 1a/1b open-label, multicenter study to evaluate the safety, tolerability, PK, pharmacodynamic, and preliminary anti-tumor activity of DBC-664 in patients with endometrial cancer, ovarian cancer, and other advanced solid tumors . This study is divided into 2 parts: Phase-1a Dose Escalation (Part 1), and Phase-1b Dose Expansion (Part 2). In each part, patients who meet specific eligibility criteria will be enrolled.

Interventions

BIOLOGICALDBC-664

DBC-664 will be administered intravenously.

Sponsors

Duboce Biopharmaceuticals, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Must be ≥18 years of age at the time consent is signed. * Has a histologically or cytologically confirmed unresectable recurrent locally advanced or metastatic solid tumor * Has measurable disease per RECIST v1.1 (or mRECIST 1.1 for patients with pleural mesothelioma), as assessed by the local site Investigator/radiology.

Exclusion criteria

* Has a diagnosis of immunodeficiency. * Has had a prior stem cell, bone marrow, or organ transplant. * Has a known history of human immunodeficiency virus (HIV) infection. * Has active or chronic hepatitis B virus (HBV), or hepatitis C virus (HCV) infection. * Has an active autoimmune disease (non-immunotherapy induced conditions) that has required systemic treatment in the past 2 years (ie, with use of disease modifying agents, corticosteroids, or immunosuppressive drugs). * Has a history of (noninfectious) pneumonitis that required steroids or current active pneumonitis/interstitial lung disease. * Has symptomatic visceral spread of disease that poses a risk of life-threatening complications in the short term, per Investigator's opinion (including massive uncontrolled effusions \[pleural, pericardial, peritoneal\], pulmonary lymphangitis, and over 50% liver involvement). * Has known active central nervous system (CNS) metastases and/or carcinomatous meningitis. Individuals with previously treated CNS metastases may participate provided they are radiologically stable (ie, without evidence of progression for at least 2 weeks by repeat imaging \[note that the repeat imaging should be performed during study Screening\]), clinically stable, and without requirement of steroid treatment for at least 14 days prior to first dose of study treatment. * Has a history of a previous secondary malignancy within 3 years of Screening (except basal cell or squamous cell carcinoma of the skin or carcinoma in situ treated with curative therapy or other localized, low-grade tumors deemed cured, or whose natural history does not have the potential to interfere with the safety or efficacy assessments of the current study and not treated with systemic anticancer therapy \[except hormonal therapy\]). * Has a known psychiatric or substance abuse disorder that would interfere with the individuals' ability to cooperate with the requirements of the study.

Design outcomes

Primary

MeasureTime frameDescription
Safety and Tolerability2 yearsThe safety and tolerability of DBC-664 in patients with solid tumor measured by frequency and severity of treatment-emergent adverse events (TEAEs), serious adverse events (SAEs), dose-limiting toxicities (DLTs), adverse events of special interest (AESIs), adverse events (AEs) leading to dose interruption and of adverse events (AEs) leading to treatment discontinuation
Determine Recommended Dose for Expansion1 yearTo determine the maximum tolerated dose (MTD) and/or select the recommended dose(s) for expansion (RDE\[s\]) of DBC-664
Characterize Pharmacokinetics2 yearsTo characterize the pharmacokinetics (PK) of DBC-664 with Cmax following administration

Countries

United States

Contacts

CONTACTLisa Knapp
lknapp@tcglsoleil.com+1 (650) 442-3367

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 22, 2026