Trials / Recruiting

RecruitingNCT06072612

Study of the Bria-IMT Regimen and CPI vs Physicians' Choice in Advanced Metastatic Breast Cancer.

Randomized, Open-Label Study of the Bria-IMT Regimen and Check Point Inhibitor vs Physicians' Choice in Advanced Metastatic Breast Cancer.

Status: Recruiting
Phase: Phase 3
Study type: Interventional
Enrollment: 404 (estimated)

Sponsor: BriaCell Therapeutics Corporation · Industry
Sex: All
Age: 18 Years
Healthy volunteers: Not accepted

Summary

Detailed description

This is a multicenter randomized, open label study to evaluate overall survival with the Bria-IMT regimen in combination with Checkpoint Inhibitor \[Retifanlimab\], versus Treatment of Patients'/Physicians' Choice (TPC) in advanced metastatic or locally recurrent breast cancer (aMBC) patients with no approved alternative therapies available. A secondary objective will be to evaluate the activity of the Bria-IMT regimen alone in comparison with the Bria-IMT regimen in combination with CPI. Initial randomization will be 1:1:1 to the Bria-IMT regimen + CPI (combination therapy), TPC, and the Bria-IMT regimen alone (monotherapy). After the first 150 patients have enrolled in the study, the monotherapy arm will be discontinued and patients allowed to cross over to the combination therapy if needed. Randomization will continue 1:1 between the combination therapy vs TPC. For the Bria regimen +/- CPI arms, treatment cycles occur every 3 weeks. TPC cycle details will be according to the site's SOC. In the absence of progressive disease or major safety issues, the patient will continue with therapy cycles, with imaging assessment every 6 weeks x2 then every 8 weeks thereafter. The Bria-IMT regimen includes: Day -2 or -3 Cyclophosphamide 300mg/m2 Day 0 SV-BR-1-GM given intradermally divided into 4 inoculations Day 1-3 CPI infusion plus interferon intra-dermally within each Bria-IMT inoculation site

Conditions

Interventions

Type	Name	Description
BIOLOGICAL	SV-BR-1-GM	SV-BR-1-GM is an experimental, allogeneic, whole cell breast tumor cell line stably transfected with the CSF2 gene (encoding GM-CSF) to secrete GM-CSF in vivo to consequently augment dendritic cell activity
DRUG	Cyclophosphamide	Cyclophosphamide is an alkylating agent with indications for treatment of malignant diseases including breast cancer. Cyclophosphamide (Cytoxan) 300 mg/m2 I.V., single dose, will be given to patients assigned to the SV-BR-1-GM. Cyclophosphamide will be administered 2-3 days prior to SV-BR-1-GM inoculations.
DRUG	Interferon infiltration of the inoculation site	Interferon is a cytokine released by cells to regulate immune responses to viral infections. For this study, 0.1 mcg Pegasys per injection site (x 4 injection sites) will be administered.
DRUG	Retifanlimab	Retifanlimab is a checkpoint inhibitor. A total dose of 375mg will be administered at first cycle on or about day +2 (+/-1d). In all other cycles, Retifanlimab is permitted to be administered between Day -2/-3 to Day 2±1 of the cycle based on the convenience of the patients and the clinical sites. However once the timing of the CPI is chosen for C1, it must be given on the same day thereafter throughout the trial.
DRUG	Treatment of Physician's Choice	Patients in the TPC arm of the study will be treated with one or a combination of the following: carboplatin, taxanes, capecitabine, gemcitabine, vinorelbine or eribulin in accordance with the investigators and institutional standard of care. For HER2+ patients, a HER2-targeted agent of the physician's choice can be part of TPC.

Timeline

Start date: 2023-12-05
Primary completion: 2027-12-01
Completion: 2028-06-01
First posted: 2023-10-10
Last updated: 2026-04-07

Locations

79 sites across 1 country: United States

Regulatory

FDA-regulated drug study

Source: ClinicalTrials.gov record NCT06072612. Inclusion in this directory is not an endorsement.