Greenwich LifeSciences Expands Phase III FLAMINGO-01 Breast Cancer Trial to Portugal

01 October 2025 | Wednesday | News

Regulatory approval enables enrollment in Portugal, where breast cancer is the most common cancer in women; Dr. Luís António Marques da Costa appointed national principal investigator.

Greenwich LifeSciences, Inc., 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 announced the expansion of FLAMINGO-01 clinical trial to Portugal.

The Company's application to European regulators has been formally approved, adding Portugal as an approved country in FLAMINGO-01 in addition to Spain, France, Germany, Italy, Poland, Romania, Ireland, and the US.

According to the latest data collected by the European Cancer Information System (click here), a total of 9,065 new cases of breast cancer were diagnosed in Portugal in 2022, which is the most common cancer diagnosed in women, representing approximately 30% of all cancers in women. Breast cancer is the leading cause of death from cancer in women in Portugal with 2,211 deaths in 2022.

Luís António Marques da Costa, MD, PhD, will be serving as the national principal investigator in Portugal for FLAMINGO-01. Dr. Costa is an Associate Professor of Medicine, Oncology & Oncobiology, FML-UL, Lisbon, Portugal, and Head of the Clinical Translational Oncology Research Unit at the Institute of Molecular Medicine. He has also served as Director of the Oncology Department at Hospital de Santa Maria in Lisbon since 2005. At the School of Medicine, he is the Coordinator Professor of "Oncobiologia" a new teaching unit that aims to teach the understanding of clinical oncology through molecular medicine. He is involved in multiple clinical trials in breast cancer and other solid tumors, and his research interests have long centered on the area of bone metastases. In recent years, his research has focused on understanding the molecular mechanisms of tumor progression at metastatic sites using bone metastases as a paradigm.

CEO Snehal Patel commented, "We look forward to collaborating with Dr. Costa and his colleagues. We were introduced to Dr. Costa by a member of our steering committee. We recently visited Lisbon to begin start-up activities and to meet our investigators to develop a strategy for Portugal. We are in the process of activating sites in Lisbon and are reviewing additional sites in central and northern Portugal."

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