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Clinical Study of PM1003 in Phase I/IIa Treatment of Advanced Malignant Solid Tumors

Phase I Study to Evaluate the Tolerability, Safety, Pharmacokinetic and Primary Efficacy of PM1003 in Patients With Advanced Solid Tumors and Phase IIa Study to Evaluate the Primary Efficacy of PM1003 in Advanced Solid Tumors

Status
UNKNOWN
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05862831
Enrollment
285
Registered
2023-05-17
Start date
2021-09-07
Completion date
2025-11-15
Last updated
2023-05-17

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

Conditions

Advanced Solid Tumors

Keywords

PD-L1, 4-1BB

Brief summary

This is a single-arm, open-lable, multicenter phase I/IIa clinical trial evaluating the safety, tolerability, pharmacokinetics, and preliminary efficacy of PM1003 in the treatment of advanced solid tumors.

Detailed description

PM1003 is a Bispecific Antibody Targeting PD-L1 and 4-1BB.

Interventions

BIOLOGICALPM1003 Injection

Subjects will receive PM1003 by intravenous administration.

Sponsors

Biotheus Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

In dose escalation stage, three subjects will be enrolled at the protocol starting dose of PM1032 for 21 Days DLT observation, followed by same dose every 2 weeks (Q2W) until they meet the discontinuation criteria. Dose escalation will proceed to the next dose level according to the 3+3 design. Dose expansion stage of the study will be initiated at the Sponsor's discretion at the dose level and treatment schedule which was established as the recommended Phase 2 dose (RP2D) in the dose escalation stage.

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

1. Voluntary participation in clinical study; fully understand the study and sign informed consent voluntarily; willing to follow and able to complete all test procedures; 2. Male or female aged 18 to 75 years; 3. Subjects with malignant tumor confirmed by histology or cytology; 4. Adequate organ function; 5. ECOG score was 0-1. 6. Pre-menopausal female subjects with negative blood pregnancy results within 7 days prior to the study treatment, and agree to abstain from sex or use medically approved effective contraceptive measures for 6 months from the date of signing the informed consent form to the end of the last medication; 7. Male subjects are agree to abstain from sex or use medically approved effective contraceptive methods for 6 months from the date of signing the informed consent form to the end of the last medication, and do not donate sperm during this period.

Exclusion criteria

1. History of severe allergic to macromolecular protein drugs, severe allergy to drugs or known allergy to any component of the drug in this study; 2. Treatment with any 4-1BB monoclonal antibody or 4-1BB-containing dual antibody immune co-stimulatory molecule agonist; 3. Current active infection requiring intravenous anti-infective therapy; 4. Current presence of uncontrolled pleural, pericardial, and peritoneal effusions; 5. Known history of alcohol abuse, psychotropic drug abuse or drug abuse; 6. History of neurological or psychiatric disorders, such as epilepsy, dementia, schizophrenia, etc.; 7. Anticipated need for any other form of antineoplastic drug treatment during the trial; 8. Women who are pregnant or breastfeeding; 9. Other conditions lead to inappropriate to participate in this study as judged by the investigator.

Design outcomes

Primary

MeasureTime frameDescription
Dose Limited Toxicity(DLT)up to 21 daysOccurrence of DLT after receiving PM1003 injection
Assess the incidence and severity of treatment-related adverse eventsUp to 30 days after last treatmentThe incidence and severity of treatment-emergent adverse events (TEAEs) and treatment related adverse events (TRAEs) graded according to NCI-CTCAE v5.0

Countries

China

Contacts

Primary ContactJie Zhang
zhang.jie@biotheus.com+86 18221509791
Backup ContactYe Guo
pattrickguo@gmail.com

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026