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Phase II Study of HLX43 Monotherapy or Combined With Immune Checkpoint Inhibitors in Patients With Locally Advanced, Recurrent, or Metastatic Triple-negative Breast Cancer.

NCT07487519 · Status: NOT_YET_RECRUITING · Phase: PHASE2 · Type: INTERVENTIONAL · Enrollment: 180

Last updated 2026-03-23

No results posted yet for this study

Summary

The study is being conducted to explore the reasonable dosage and evaluate the efficacy, safety and tolerability of HLX43 (Anti-PD-L1 ADC) as a monotherapy or in combination with immune checkpoint inhibitors in Subjects with locally advanced, recurrent or metastatic triple-negative breast cancer (TNBC).

Conditions

  • Breast Cancer (Triple Negative Breast Cancer (TNBC))

Interventions

DRUG

HLX43 DOSE 1 IN ≥2L TNBC

Dose 1; HLX43 is an anti-PD-L1 monoclonal antibody conjugated with a novel high potency DNA topoisomerase I (topo I) inhibitor, with a drug-antibody-ratio (DAR) of 8.

DRUG

HLX43 DOSE 2 IN ≥2L TNBC

Dose 2; HLX43 is an anti-PD-L1 monoclonal antibody conjugated with a novel high potency DNA topoisomerase I (topo I) inhibitor, with a drug-antibody-ratio (DAR) of 8.

DRUG

HLX43 DOSE 1 + HLX10

HLX43 is an anti-PD-L1 monoclonal antibody conjugated with a novel high potency DNA topoisomerase I (topo I) inhibitor, with a drug-antibody-ratio (DAR) of 8. HLX10 is a humanized anti-PD-1 monoclonal antibody that functions as an immune checkpoint inhibitor.

DRUG

HLX43 DOSE1 IN 1L TNBC

HLX43 is an anti-PD-L1 monoclonal antibody conjugated with a novel high potency DNA topoisomerase I (topo I) inhibitor, with a drug-antibody-ratio (DAR) of 8.

DRUG

HLX43 DOSE 2 IN 1L TNBC

HLX43 is an anti-PD-L1 monoclonal antibody conjugated with a novel high potency DNA topoisomerase I (topo I) inhibitor, with a drug-antibody-ratio (DAR) of 8.

DRUG

HLX43 DOSE2 + HLX10

HLX43 is an anti-PD-L1 monoclonal antibody conjugated with a novel high potency DNA topoisomerase I (topo I) inhibitor, with a drug-antibody-ratio (DAR) of 8. HLX10 is a humanized anti-PD-1 monoclonal antibody that functions as an immune checkpoint inhibitor.

Sponsors & Collaborators

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-04-25
Primary Completion
2027-05-15
Completion
2028-05-22

Countries

  • China

Study Locations

More Related Trials

Entities

Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07487519 on ClinicalTrials.gov