RC48 Plus Bevacizumab or Pyrotinib in HER2-Positive Metastatic Breast Cancer After T-DXd Failure: A Phase II Study

PHASE2RecruitingINTERVENTIONAL
Enrollment

74

Participants

Timeline

Start Date

January 1, 2024

Primary Completion Date

December 1, 2025

Study Completion Date

January 1, 2026

Conditions
HER2 + Breast Cancer
Interventions
DRUG

Disitamab Vedotin (RC48)

A HER2-targeted antibody-drug conjugate comprising a humanized anti-HER2 monoclonal antibody linked via a cathepsin-cleavable MC-VC-PAB linker to the microtubule inhibitor MMAE (drug-to-antibody ratio ≈4). Administered intravenously at 2.0 mg/kg every 2 weeks.

DRUG

Bevacizumab

A recombinant humanized monoclonal antibody that binds vascular endothelial growth factor (VEGF) to inhibit tumor angiogenesis. Administered intravenously at 7.5 mg/kg every 2 weeks in combination with RC48.

DRUG

Pyrotinib

An irreversible pan-HER tyrosine kinase inhibitor targeting HER1, HER2, and HER4, inhibiting downstream PI3K/Akt and MAPK signaling. Administered orally at 320 mg once daily (post-meal) in combination with RC48.

Trial Locations (1)

Unknown

RECRUITING

The First Affiliated Hospital with Nanjing Medical University, Nanjing

All Listed Sponsors
collaborator

RenJi Hospital

OTHER

collaborator

Anhui Provincial Hospital

OTHER_GOV

collaborator

The Affiliated Hospital of Xuzhou Medical University

OTHER

collaborator

The First Hospital of Jilin University

OTHER

collaborator

Shanghai Minhang Central Hospital

OTHER

collaborator

Zhejiang Cancer Hospital

OTHER

collaborator

Huai'an First People's Hospital

OTHER

lead

The First Affiliated Hospital with Nanjing Medical University

OTHER