RecruitingPhase 2NCT06172127

PHESGO Maintenance After T-DXd Short Induction for HER2+ Unresectable Locally Recurrent or Metastatic Breast Cancer

A Multicenter, Open-Label, Single-Arm, Phase II Trial Exploring the Maintenance of Trastuzumab and Pertuzumab Following Trastuzumab Deruxtecan as Induction Treatment for HER2+ Unresectable Locally Recurrent or Metastatic Breast Cancer


Sponsor

MedSIR

Enrollment

165 participants

Start Date

Jul 22, 2024

Study Type

INTERVENTIONAL

Conditions

Summary

DEMETHER is a phase II trial exploring the maintenance of trastuzumab and pertuzumab fixed dose combination (FDC) for subcutaneous administration (SC, PHESGO) following trastuzumab deruxtecan (T-DXd) as induction treatment for HER2-positive unresectable locally recurrent or metastatic breast cancer (MBC) patients.


Eligibility

Min Age: 18 Years

Plain Language Summary

Simplified for easier understanding

This study is testing a new treatment strategy for HER2-positive breast cancer that has spread or cannot be removed. Patients first receive a short course of trastuzumab deruxtecan (T-DXd, a targeted antibody-chemotherapy drug), and those who respond well then switch to a maintenance regimen of pertuzumab and trastuzumab (PHESGO), to see if this approach can maintain disease control with fewer side effects. **You may be eligible if...** - You are 18 or older - You have HER2-positive breast cancer that has spread (metastatic) or cannot be surgically removed - You have not yet received treatment for metastatic disease - You have at least one measurable tumor - You are in good general health (ECOG 0-1) - You are expected to live at least 12 weeks - Tumor tissue is available for HER2 testing confirmation **You may NOT be eligible if...** - You are pregnant or breastfeeding - You have active brain metastases that are unstable - You have serious heart conditions or other conditions that would make these treatments unsafe 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

DRUGTrastuzumab deruxtecan

10 mL type 1 amber borosilicate glass vial sealed with a fluoro-resin laminated butyl rubber stopper, and a polypropylene/aluminium yellow flip-off crimp cap. One vial of powder for concentrate for solution for IV infusion contains 100 mg of T-DXd. The drug product also contains L-histidine, L-histidine hydrochloride monohydrate, Sucrose, and Polysorbate 80.

DRUGPhesgo 1,200 MG / 600 MG / 30,000 UNT Per 15 ML Injection

20 mL type I borosilicate glass vial tapered with fluororesin-laminated rubber stopper sealed with aluminum and covered by a cool green plastic flip-off cap, containing 15 mL solution of 1200 mg of pertuzumab and 600 mg of trastuzumab.

DRUGPhesgo 600 MG / 600 MG / 20,000 UNT in 10 mL Injection

15 mL type I borosilicate glass vial tapered with fluororesin-laminated rubber stopper sealed with aluminum and covered by a cool green plastic flip-off cap, containing 10 mL solution of 600 mg of pertuzumab and 600 mg of trastuzumab.


Locations(36)

Dana-Farber Cancer Institute

Boston, Massachusetts, United States

Northwell Health

New York, New York, United States

Institute Paoli Calmettes

Marseille, France

Hopital Europeen Georges Pompidou

Paris, France

Hôpital Tenon AP-HP

Paris, France

Marienhospital Bottrop GmbH Klinik für Gynäkologie und Geburtshilfe

Bottrop, Germany

Kliniken Essen Mitte

Essen, Germany

Mammazentrum HH

Hamburg, Germany

Klinikum der Universität München

München, Germany

Humanitas Gavazzeni

Bergamo, Italy

Instituto Europeo di Oncologia

Milan, Italy

University Hospital Maggiore della Carita

Novara, Italy

Fondazione Policlinico Universitario Agostino Gemelli

Roma, Italy

Hospital del Vinalopó

Alicante, Spain

Hospital General Universitario Dr. Balmis (Alicante)

Alicante, Spain

Hospital Clínic i Provincial de Barcelona

Barcelona, Spain

Hospital Universitari Dexeus

Barcelona, Spain

Institut Català d' Oncologia L'Hospitalet (ICO)

Barcelona, Spain

Hospital Universitario de Basurto

Bilbao, Spain

Hospital Provincial de Castellón

Castellon, Spain

Hospital Universitario Reina Sofía

Córdoba, Spain

Hospital Universitario Clínico San Cecilio de Granada

Granada, Spain

Hospital Universitario de León

León, Spain

Hospital Beata María Ana

Madrid, Spain

Hospital Clínico San Carlos

Madrid, Spain

Hospital Universitario La Paz

Madrid, Spain

Hospital Universitario Ramón y Cajal

Madrid, Spain

MD Anderson Cancer Center Madrid

Madrid, Spain

Hospital Universitario Virgen de la Victoria

Málaga, Spain

Hospital Quirónsalud Sagrado Corazón

Seville, Spain

Hospital Universitario Virgen del Rocío

Seville, Spain

Hospital Universitario Virgen Macarena

Seville, Spain

Consorci Hospital General Universitari de València

Valencia, Spain

Hospital Arnau de Vilanova de Valencia

Valencia, Spain

Hospital Clínico Universitario de Valencia

Valencia, Spain

Instituto Valenciano de Oncología (IVO)

Valencia, Spain

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NCT06172127


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