RecruitingPhase 3NCT05232916

Phase 3 Study to Evaluate the Efficacy and Safety of HER2/Neu Peptide GLSI-100 (GP2 + GM-CSF) in HER2/Neu Positive Subjects

A Randomized, Multicenter, Placebo-controlled, Phase 3 Study to Evaluate the Efficacy and Safety of HER2/Neu Peptide GLSI-100 (GP2 + GM-CSF) in HER2/Neu Positive Subjects With Residual Disease or High-Risk PCR After Both Neoadjuvant and Postoperative Adjuvant Trastuzumab-based Therapy (FLAMINGO-01)


Sponsor

Greenwich LifeSciences, Inc.

Enrollment

750 participants

Start Date

Aug 11, 2022

Study Type

INTERVENTIONAL

Conditions

Summary

This is a prospective, randomized, double-blinded, placebo-controlled, multi-center, Phase 3 study of GLSI-100 immunotherapy in HLA-A\*02 positive and HER2/neu positive subjects who are at high risk for disease recurrence and have completed both neoadjuvant and postoperative adjuvant standard of care therapy. Treatment consists of 6 intradermal injections, Primary Immunization Series (PIS), over the first 6 months of treatment and 5 booster intradermal injections spaced 6 months apart. A third open-label arm will explore GLSI-100 immunotherapy in non-HLA-A\*02 positive and HER2/neu positive subjects.


Eligibility

Min Age: 18 YearsMax Age: 100 Years

Plain Language Summary

Simplified for easier understanding

This Phase 3 trial is testing whether a vaccine called GLSI-100 (which contains a HER2/neu protein fragment plus an immune stimulant called GM-CSF) can prevent breast cancer from coming back in women who have completed standard HER2-positive breast cancer treatment and are now cancer-free. **You may be eligible if...** - You have a specific immune marker (HLA-A*02 positive), unless enrolling in a special non-HLA arm - You have confirmed HER2-positive breast cancer (stage I, II, or III) - You have completed both neoadjuvant and adjuvant trastuzumab-based therapy - You are currently cancer-free (no evidence of disease) - You have adequate blood counts, kidney, and liver function **You may NOT be eligible if...** - You have active cancer or metastatic (stage IV) disease - You have an autoimmune disease or are immunocompromised - You have received prior cancer vaccines for this condition - You are pregnant or breastfeeding Talk to your doctor to see if this trial is right for you.

This summary was AI-generated to explain the trial in plain language. It is not medical advice. Always discuss eligibility with your doctor before enrolling in a clinical trial.

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Interventions

BIOLOGICALPlacebo

0.9% Normal Saline

BIOLOGICALGLSI-100

500 mcg/mL GP2 and 125 mcg/mL GM-CSF


Locations(166)

City of Hope - Cancer Center Phoenix

Goodyear, Arizona, United States

Tucson Medical Center HealthCare - Tucson-Rudasill

Tucson, Arizona, United States

City of Hope - Duarte Cancer Center

Duarte, California, United States

Providence St. Jude Medical Center - Virginia K. Crosson Cancer Center

Fullerton, California, United States

City of Hope - Orange County Lennar Foundation Cancer Center

Irvine, California, United States

University of California San Diego - Moores Cancer Center

La Jolla, California, United States

University of Southern California - Norris Comprehensive Cancer Center

Los Angeles, California, United States

Stanford Medicine Cancer Center - Stanford Women's Cancer Center

Palo Alto, California, United States

University of California San Francisco - Helen Diller Family Comprehensive Cancer Center

San Francisco, California, United States

University of California Los Angeles - Hematology / Oncology Parkside

Santa Monica, California, United States

PIH Health Hospital - Whittier Hospital

Whittier, California, United States

Rocky Mountain Cancer Centers

Denver, Colorado, United States

Yale Cancer Center - Smilow Cancer Hospital

New Haven, Connecticut, United States

Johns Hopkins Medicine - Kimmel Cancer Center-Sibley Memorial Hospital

Washington D.C., District of Columbia, United States

University of Miami - Sylvester Comprehensive Cancer Center

Miami, Florida, United States

Moffitt Cancer Center

Tampa, Florida, United States

City of Hope - Cancer Center Atlanta

Newnan, Georgia, United States

Northwestern University - Northwestern Memorial Hospital

Chicago, Illinois, United States

City of Hope - Cancer Center Chicago

Zion, Illinois, United States

Maryland Oncology Hematology

Annapolis, Maryland, United States

Massachusetts General Hospital Cancer Center

Boston, Massachusetts, United States

Minnesota Oncology

Maple Grove, Minnesota, United States

Siteman Cancer Center - Washington University Medical Campus

St Louis, Missouri, United States

Nebraska Cancer Specialists

Omaha, Nebraska, United States

Nebraska Medicine - University of Nebraska Medical Center

Omaha, Nebraska, United States

Comprehensive Cancer Centers of Nevada

Henderson, Nevada, United States

Cooper University Health Care

Camden, New Jersey, United States

New York Oncology Hematology

Albany, New York, United States

New York-Presbyterian - Columbia University Irving Medical Center

New York, New York, United States

Stony Brook University Cancer Center

Stony Brook, New York, United States

Oncology Hematology Care

Cincinnati, Ohio, United States

Compass Oncology - Northwest Cancer Specialists

Tigard, Oregon, United States

Redeemer Health - Holy Redeemer Hospital

Meadowbrook, Pennsylvania, United States

Sidney Kimmel Comprehensive Cancer Center - Thomas Jefferson University Hospital

Philadelphia, Pennsylvania, United States

Texas Oncology - Austin

Austin, Texas, United States

Texas Oncology - Dallas Presbyterian Hospital

Dallas, Texas, United States

Texas Oncology - Baylor Charles A. Sammons Cancer Center

Dallas, Texas, United States

The University of Texas Southwestern Medical Center

Dallas, Texas, United States

Baylor College of Medicine - Dan L. Duncan Comprehensive Cancer Center

Houston, Texas, United States

The University of Texas Health Sciences Center at San Antonio - Mays Cancer Center

San Antonio, Texas, United States

Texas Oncology - San Antonio

San Antonio, Texas, United States

Texas Oncology - Gulf Coast

Sugar Land, Texas, United States

Texas Oncology - Tyler

Tyler, Texas, United States

University of Utah - Huntsman Cancer Institute

Salt Lake City, Utah, United States

Virginia Cancer Specialists

Fairfax, Virginia, United States

Sainte-Catherine - Institut du Cancer Avignon-Provence (ICAP)

Avignon, France

Clinique Pasteur-Lanroze

Brest, France

Centre François Baclesse (CLCC)

Caen, France

Pôle Santé Léonard De Vinci

Chambray-lès-Tours, France

Centre Hospitalier de Cholet

Cholet, France

Centre Hospitalier Alpes Leman

Contamine-sur-Arve, France

Centre Léon Bérard

Lyon, France

Hôpital Privé du Confluent

Nantes, France

Centre Hospitalier Privé Sainte-Marie Osny

Osny, France

Institut Curie

Paris, France

Hospices Civils de Lyon

Pierre-Bénite, France

Hôpital NOVO (Nord-Ouest Val-d'Oise)

Pontoise, France

Institut Jean Godinot (CLCC)

Reims, France

Institut Curie

Saint-Cloud, France

Centre Hospitalier Privé Saint-Grégoire

Saint-Grégoire, France

Centre Hospitalier Universitaire de Saint-Étienne

Saint-Priest-en-Jarez, France

Institut de cancérologie Strasbourg Europe

Strasbourg, France

Hôpital Privé Drôme Ardèche

Valence, France

Hôpital Robert Schuman

Vantoux, France

Institut Gustave Roussy

Villejuif, France

Haematologie-Onkologie im Zentrum MVZ GmbH

Augsburg, Germany

Klinikum Bayreuth GmbH

Bayreuth, Germany

DBZ Onkologie GmbH

Berlin, Germany

Helios Klinikum Berlin-Buch GmbH

Berlin, Germany

Marienhospital Bottrop gGmbH

Bottrop, Germany

Evangelisches Diakonie-Krankenhaus gGmbH

Bremen, Germany

Klinikum Chemnitz gGmbH

Chemnitz, Germany

Städtisches Klinikum Dessau

Dessau, Germany

St.-Johannes Hospital Dortmund

Dortmund, Germany

Universitaetsklinikum Carl Gustav Carus Dresden an der Technischen Universitaet Dresden AöR

Dresden, Germany

MVZ Medical Center Duesseldorf GmbH

Düsseldorf, Germany

Studienzentrale für das MVZ Eggenfelden e.K.

Eggenfelden, Germany

Evangelisches Kliniken Essen-Mitte gGmbH

Essen, Germany

Klinikum Frankfurt Höchst GmbH

Frankfurt, Germany

Praxis für Interdisziplinäre Onkologie und Haematologie GbR

Freiburg im Breisgau, Germany

Helios Klinikum Gifhorn GmbH

Gifhorn, Germany

Universitätsmedizin Göttingen

Göttingen, Germany

Krankenhaus St. Elisabeth und St. Barbara Halle (Saale) GmbH

Halle, Germany

Mammazentrum Hamburg MVZ GbR

Hamburg, Germany

Gynäkologische Praxisklinik Hamburg-Harburg

Harburg, Germany

National Center For Tumor Diseases (NCT) Heidelberg

Heidelberg, Germany

Elisabeth Krankenhaus GmbH

Kassel, Germany

MVZ GynKrefeld GmbH

Krefeld, Germany

Gemeinschaftspraxis für Hämatologie und Onkologie Langen

Langen, Germany

Studienzentrum UnterEms Leer

Leer, Germany

RKH Klinken Ludwigsburg-Bietigheim gGmbH

Ludwigsburg, Germany

Universitaetsmedizin der Johannes Gutenberg-Universitaet Mainz KöR

Mainz, Germany

Heidelberg University

Mannheim, Germany

Klinikum der Technischen Universitaet Muenchen (TUM Klinikum)

Munich, Germany

München Klinik gGmbH

Munich, Germany

Klinikum Südstadt Rostock Eigenbetrieb der Hanse und Universitätsstadt Rostock

Rostock, Germany

Gesundheits und Pflegezentrum Ruesselsheim gGmbH

Rüsselsheim am Main, Germany

Diakonissen-Stiftungs-Krankenhaus Speyer

Speyer, Germany

Klinikum Mutterhaus der Borromäerinnen gGmbH

Trier, Germany

Universitätsklinikum Ulm AöR

Ulm, Germany

Marienhospital Witten

Witten, Germany

Klinikum Worms gGmbH

Worms, Germany

Helios Universitätsklinikum Wuppertal

Wuppertal, Germany

St. Vincent's University Hospital

Dublin, Ireland

Azienda Ospedaliero Universitaria di Bologna Policlinico di Sant'Orsola IRCCS (Istituto Di Ricerca E Di Cura A Carattere Scientifico)

Bologna, Italy

Ospedale Policlinico San Martino IRCCS (Istituto Di Ricerca E Di Cura A Carattere Scientifico)

Genova, Italy

Humanitas Research Hospital

Milan, Italy

Azienda Ospedaliera Universitaria Federico II Di Napoli

Naples, Italy

Istituto Nazionale Tumori Fondazione Pascale IRCCS (Istituto Di Ricerca E Di Cura A Carattere Scientifico)

Naples, Italy

Azienda Ospedaliero Universitaria Maggiore della Carità di Novara

Novara, Italy

Istituto Oncologico Veneto

Padova, Italy

Istituti Clinici Scientifici Maugeri Spa Società Benefit IRCCS (Istituto Di Ricerca E Di Cura A Carattere Scientifico)

Pavia, Italy

Azienda Ospedaliero Universitaria Pisana

Pisa, Italy

Fondazione Policlinico Universitario Agostino Gemelli IRCCS (Istituto Di Ricerca E Di Cura A Carattere Scientifico)

Rome, Italy

Przychodnia Lekarska KOMED Roman Karaszewski

Konin, Poland

Samodzielny Publiczny Zakład Opieki Zdrowotnej (ZOZ) Szpital Uniwersytecki w Krakowie

Krakow, Poland

Szpital Specjalistyczny im. Ludwika Rydygiera w Krakowie

Krakow, Poland

Samodzielny Publiczny Zakład Opieki Zdrowotnej (SPOZOZ) Opolskie Centrum Onkologii im. prof. Tadeusza Koszarowskiego w Opolu

Opole, Poland

Uniwersytecki Szpital Kliniczny w Poznaniu

Poznan, Poland

Centrum Medyczne MrukMed

Rzeszów, Poland

Wojewodzki Szpital Specjalistyczny im. Janusza Korczaka w Słupsku

Słupsk, Poland

Narodowy Instytut Onkologii im. Marii Skłodowskiej-Curie

Warsaw, Poland

Wojskowy Instytut Medyczny, Państwowy Instytut Badawczy

Warsaw, Poland

Filantropia Clinical Hospital

Bucharest, Romania

Neolife Baneasa Bucharest Medical Center

Bucharest, Romania

Institute of Oncology "Prof Dr Ion Chiricuta"

Cluj-Napoca, Romania

Oncomed SRL - Oncology Center

Timișoara, Romania

Complejo Hospitalario Universitario de Albacete

Albacete, Spain

Hospital General Universitario Dr. Balmis

Alicante, Spain

Hospital Universitario de Badajoz

Badajoz, Spain

Hospital Clínic De Barcelona

Barcelona, Spain

Hospital del Mar

Barcelona, Spain

Hospital San Pedro de Alcántara

Cáceres, Spain

Hospital Universitario Reina Sofía

Córdoba, Spain

Hospital Clínico Universitario Virgen de la Arrixaca

El Palmar, Spain

Hospital Universitario de Fuenlabrada

Fuenlabrada, Spain

Hospital Galdakao-Usansolo

Galdakao, Spain

Hospital Universitario Clínico San Cecilio

Granada, Spain

Hospital Universitario de Jaén

Jaén, Spain

Hospital Universitario de Jerez de la Frontera

Jerez de la Frontera, Spain

Hospital Universitari Arnau de Vilanova (Lleida)

Lleida, Spain

Hospital General Universitario Gregorio Marañón

Madrid, Spain

Hospital Universitario 12 de Octubre

Madrid, Spain

Hospital Universitario Fundación Jiménez Díaz

Madrid, Spain

Hospital Universitario HM Sanchinarro

Madrid, Spain

Hospital Universitario Infanta Leonor

Madrid, Spain

Hospital Universitario Puerta de Hierro Majadahonda

Majadahonda, Spain

Althaia, Xarxa Assistencial Universitària de Manresa

Manresa, Spain

Hospital Clínico Universitario Virgen de la Victoria

Málaga, Spain

Hospital Regional Universitario de Malaga

Málaga, Spain

Hospital General Universitario Morales Meseguer

Murcia, Spain

Hospital Universitari Son Espases

Palma de Mallorca, Spain

Hospital Universitario de Canarias

San Cristóbal de La Laguna, Spain

Hospital Universitario Donostia

San Sebastián, Spain

Hospital Universitari General de Catalunya - Grupo Quirónsalud

Sant Cugat del Vallès, Spain

Hospital Universitario San Juan de Alicante

Sant Joan d'Alacant, Spain

Hospital Universitario Nuestra Señora de Candelaria

Santa Cruz de Tenerife, Spain

Hospital Clínico Universitario de Santiago

Santiago de Compostela, Spain

Hospital Universitario Virgen del Rocío

Seville, Spain

Hospital Universitario Virgen Macarena

Seville, Spain

Hospital Universitario de Toledo

Toledo, Spain

Consorcio Hospital General Universitario de Valencia

Valencia, Spain

Hospital Clínico Universitario de Valencia

Valencia, Spain

Hospital Universitari Arnau de Vilanova (Valencia)

Valencia, Spain

Hospital Clínico Universitario Lozano Blesa

Zaragoza, Spain

Hospital Universitario Miguel Servet

Zaragoza, Spain

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NCT05232916


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