STAFFORD, Texas — Greenwich LifeSciences, Inc. (Nasdaq: GLSI) (the “Company”), a clinical-stage biopharmaceutical company focused on its Phase III clinical trial, Flamingo-01, which is evaluating GLSI-100, an immunotherapy to prevent breast cancer recurrences, today provided the following update on the expansion of the clinical trial into Europe.
The Company’s application to expand Flamingo-01 into Europe has been formally approved by Spain, France, Germany, Italy, and Poland. The academic networks participating in each country are Geicam (Spain), Unicancer (France), GBG (Germany), GIM (Italy), and a network of Polish sites. With this final approval, regulators have cleared the way to activate 105 sites as soon as site contracts and site initiation visits are completed. Site initiation visits have been scheduled as early as the week of March 4, 2024.
CEO Snehal Patel commented, “We have been planning this expansion for over 2 years and are thrilled to be making GLSI-100 available to patients in Europe in these major countries with a total population of approximately 300 million. The interest in developing a vaccine to prevent the recurrence of breast cancer is very high in the European clinical and academic community, especially given the promising efficacy and safety profile from the prior GLSI-100 trials. We look forward to working very closely with our European colleagues and will start by training site staff, pharmacists, and nurses. We hope to open sites as quickly as possible, while applying to open additional sites in the approved countries and potentially adding additional countries in Europe.”
About Flamingo-01 and GLSI-100
Flamingo-01 (NCT05232916) is a Phase III clinical trial designed to evaluate the safety and efficacy of GLSI-100 (GP2 + GM-CSF) in HER2/neu positive breast cancer patients who had residual disease or high-risk pathologic complete response at surgery and who have completed both neoadjuvant and postoperative adjuvant trastuzumab based treatment. The trial is led by Baylor College of Medicine and currently includes US clinical sites from university-based hospitals and cooperative networks with plans to expand into Europe and to open up to 150 sites globally. In the double-blinded arms of the Phase III trial, approximately 500 HLA-A*02 patients will be randomized to GLSI-100 or placebo, and up to 250 patients of other HLA types will be treated with GLSI-100 in a third arm. The trial has been designed to detect a hazard ratio of 0.3 in invasive breast cancer-free survival, where 28 events will be required. An interim analysis for superiority and futility will be conducted when at least half of those events, 14, have occurred. This sample size provides 80% power if the annual rate of events in placebo-treated subjects is 2.4% or greater.
About Breast Cancer and HER2/neu Positivity
One in eight U.S. women will develop invasive breast cancer over her lifetime, with approximately 282,000 new breast cancer patients and 3.8 million breast cancer survivors in 2021. HER2/neu (human epidermal growth factor receptor 2) protein is a cell surface receptor protein that is expressed in a variety of common cancers, including in 75% of breast cancers at low (1+), intermediate (2+), and high (3+ or over-expressor) levels.
About Greenwich LifeSciences, Inc.
Greenwich LifeSciences is a clinical-stage biopharmaceutical company focused on the development of GP2, an immunotherapy to prevent breast cancer recurrences in patients who have previously undergone surgery. GP2 is a 9 amino acid transmembrane peptide of the HER2/neu protein, a cell surface receptor protein that is expressed in a variety of common cancers, including expression in 75% of breast cancers at low (1+), intermediate (2+), and high (3+ or over-expressor) levels. Greenwich LifeSciences has commenced a Phase III clinical trial, Flamingo-01.
Company Contact
Snehal Patel
Investor Relations
Office: (832) 819-3232
Email: [email protected]
Investor & Public Relations Contact for Greenwich LifeSciences
Dave Gentry
RedChip Companies Inc.
Office: 1-800-RED CHIP (733 2447)
Email: [email protected]