A Study to Evaluate the Efficacy and Toxicities of PLX038, in Patients With Locally Advanced or Metastatic Triple-negative Breast Cancer — TOPOLOGY  

Cancer Clinical Trial

Official title: A Phase II Study to Evaluate the Efficacy and Toxicities of PLX038, in Patients With Locally Advanced or Metastatic Triple-negative Breast Cancer

Status Recruiting

Clinical Trial Summary

Single arm phase II study for with primary objective to evaluate the efficacy of PLX038 on response rate for patients with pretreated, metastatic or locally advanced triple negative breast cancer.

Clinical Trial Description

This is an open label, multi-centric phase II study designed to evaluate the safety, tolerability, pharmacokinetics, pharmacodynamics and efficacy of PLX038 in locally-advanced or metastatic TNBC. Patient must have received prior therapy (administered in the neoadjuvant, adjuvant and/or metastatic setting) with an anthracycline, taxane and sacituzumab-govitecan (unless not medically appropriate or contraindicated for the patient) and Received a minimum of two prior cytotoxic chemotherapy regimens for locally advanced or metastatic breast cancer.

Patients will be treated at a dose of 1730mg/m2 IV infusion on Day 1 of each cycle Q3W (every 21 days, 1 cycle = 1 injection) after at least a first cycle at 1300mg/m2. At the discretion of the treating physician, the PLX038 dose will be increased to 1730 mg/m2 for patients who tolerate at least 1 cycle without any of the following toxicities: febrile neutropenia, grade 4 neutropenia for > 5 days or ANC < 100 109/L for more than 1 day, or other non-hematological toxicities of Grade > 2 [NCI-CTCAE, Version 5].

All included patients will receive PLX038 as single agent as long as study is ongoing or until progression of disease, unacceptable toxicity, patient withdrawal of consent, Investigator decision, lost to follow-up, death, patient non-compliance, or study termination by Sponsor.

Tumor assessments must be performed according to the RECIST V1.1 criteria at inclusion and every 8 weeks (± 7 days) from inclusion until documented disease progression, withdrawal of consent, or death. Radiographic measurements must be performed to the RECIST specifications. ;

Related Conditions & MeSH terms

• Breast
• Cancer
• Triple Negative Breast Neoplasms

• NCT number: NCT06162351
• Study type: Interventional
• Source: Institut Curie
• Contact: Fouzia Azzouz
• Phone: 0147112366
• Email: fouzia.azzouz@curie.fr
• Status: Recruiting
• Phase: Phase 2
• Start date: April 17, 2024
• Completion date: March 19, 2026