Greenwich LifeSciences, Inc. (GLSI) – FLAMINGO-01 Open-Label Arm Reports Preliminary Results and Reaches An Important Milestone


Friday, December 19, 2025

Robert LeBoyer, Senior Vice President, Equity Research Analyst, Biotechnology, Noble Capital Markets, Inc.

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Data Reported From the Open-Label Arm Of The FLAMINGO Trial Greenwich LifeSciences announced preliminary Phase 3 results from the open-label, non-HLA-A*02 arm of its FLAMINGO-01 trial. The data showed a reduction in breast cancer recurrence rates of about 80% for patients that completed the primary vaccination series (PIS) ofGLSI-100. In addition, the first patient has completed the full 3-year treatment.

FLAMINGO0-01 Divides Patients By Immune Classification. The FLAMINGO-01 trial divides patients by their HLA types, a system of classifying a patient’s immune response. Patients with the most common HLA type, HLA-A*02, have enter one of the double-blind placebo-controlled arms of the trial. About 250 patients with other HLA types have been entered into an open-label portion, referred to as non-HLA-A*02.


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