Cadonilimab Combined With Chemotherapy as First or Second Line Treatment in Recurrent or Metastatic Triple Negative Breast Cancer

Phase 2

Recruiting

• Conditions: Cadonilimab; Triple-negative Breast Cancer
• Interventions: Drug: Cadonilimab

• Registration Number: NCT06367088
• Lead Sponsor: Wuhan Union Hospital, China

Brief Summary

The prognosis of recurrent and metastatic triple negative breast cancer (TNBC) is poor, and chemotherapy is still the main treatment for TNBC. Some studies have shown that combination therapy of antibodies targeting cytotoxic T-lymphocyte antigen-4 (CTLA-4) and programmed cell death-1 (PD-1) significantly improves clinical benefit over PD-1 antibody alone. However, broad application of this combination has been limited by toxicities. Cadonilimab is a humanized immunoglobulin G1 bispecific antibody targeting PD-1 and CTLA-4. It mutates to eliminate Fc receptor and complement-mediated cytotoxic effects. The purpose of this study is to evaluate the efficacy and safety of Cadonilimab combined with chemotherapy as a first or second-line treatment of recurrent and metastatic TNBC. This study is a multicenter, single arm, phase II, non randomized, open label, Simon two-stage design. It is planned to enroll 27 late stage TNBC patients.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2024-04-10
• Study First Submitted QC: 2024-04-15
• Study First Posted: 2024-04-16
• Study Start: 2024-05-01
• Status Verified: 2025-05
• Last Update Submitted: 2025-05-14
• Last Update Posted: 2025-05-20
• Primary Completion: 2026-04-30
• Study Completion: 2027-04-30

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 27

Inclusion Criteria

• Recurrent or metastatic TNBC patients;
• TNBC defined by immunohistochemistry as ER<1%, PR<1%, Her2=0~1+, or 2+ while HER2 Fish test shows no amplification；
• Previous received no or only first line chemotherapy treatment for recurrent or metastatic TNBC；When the time between cancer metastasis and the end of adjuvant chemotherapy exceeds 1 year, the systemic chemotherapy for metastasis treatment is recorded as first-line treatment; When less than 1year, the systemic chemotherapy for metastasis treatment is recorded as second-line treatment；
• ages 18 to 75 years at the time of signing the informed consent form (ICF);
• Eastern Cooperative Oncology Group (ECOG) performance status (PS) score of 0 or 1;
• expected survival of ≥3 months; at least one measurable lesion per RECIST (version1.1);
• acceptable renal and liver function;

Exclusion Criteria

• They had received ICIs (i.e., anti-PD-1 antibodies, anti-PD-L1 antibodies, and anti-CTLA-4 antibodies.)；
• Patients with active central nervous system (CNS) metastatic lesions or meningeal metastases；
• Patients with an active autoimmune disease that requires systemic treatment in the past two years；
• A known history of primary immunodeficiency；
• Pregnant or lactating women；
• Previous or current abnormalities of any disease, treatment, laboratory tests may confuse the study results, affect the subject's participation in the study

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
Experimental Arm	Cadonilimab	-

Primary Outcome Measures

Name	Time	Method
Objective Response Rate	Up to 2 years	The ORR is defined as the proportion of subjects with confirmed CR or confirmed PR, based on RECIST Version 1.1.

Secondary Outcome Measures

Name	Time	Method
AE	From the time of informed consent signed through 90 days after the last dose of drug	An AE is defined as any untoward medical occurrence in a participant administered a pharmaceutical product temporally associated with the use of study treatment, whether or not considered related to the study treatment.

Trial Locations

Locations (1)

Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology; 🇨🇳 Wuhan, Hubei, China