On December 9, 2025 BriaCell Therapeutics Corp. (Nasdaq: BCTX, BCTXW) (TSX: BCT) ("BriaCell" or the "Company"), a clinical-stage biotechnology company developing novel immunotherapies to transform cancer care, reported its Phase 3 clinical study has screened over 230 and enrolled over 160 patients. BriaCell anticipates reporting topline data as early as 1H2026.

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Interim data will be analyzed once 144 patient events (deaths) occur. Positive results from this pivotal study could support full approval and marketing authorization of Bria-IMT in patients with metastatic breast cancer.

BriaCell’s pivotal Phase 3 clinical study is evaluating BriaCell’s lead clinical candidate, Bria-IMT, plus an immune check point inhibitor versus physician’s choice in a dvanced metastatic b reast c ancer (Bria-ABC).

"The pace of patient enrollment in our pivotal Phase 3 study has exceeded expectations underscoring the strong engagement of participating sites and the high level of interest from patients and investigators," stated Dr. William V. Williams, BriaCell’s President & CEO. "We look forward to collecting, analyzing and sharing the Phase 3 data with the U.S. FDA in the coming months as we continue working to bring hope to patients with metastatic breast cancer who face an urgent medical need."

About BriaCell’s Pivotal Phase 3 Clinical Study of Bria-IMT Combination Regimen in MBC patients

BriaCell’s pivotal Phase 3 study of Bria-IMT plus an immune check point inhibitor (CPI) in metastatic breast cancer is ongoing.

Interim data from BriaCell’s ongoing pivotal Phase 3 study of Bria-IMT plus an immune check point inhibitor in metastatic breast cancer will be analyzed once 144 patient events (deaths) occur. This interim analysis will assess overall survival (OS) as the primary endpoint, comparing patients treated with the Bria-IMT combination regimen to those receiving physician’s choice therapy. Positive results from this pivotal study could support full approval and marketing authorization of Bria-IMT in patients with metastatic breast cancer. The Bria-IMT combination regimen has been granted FDA Fast Track designation.

For additional information on BriaCell’s pivotal Phase 3 study, please visit ClinicalTrials.gov NCT06072612.

(Press release, BriaCell Therapeutics, DEC 9, 2025, View Source [SID1234661341])