A phase II trial of the FGFR inhibitor pemigatinib in patients with metastatic esophageal–gastric junction/gastric cancer trastuzumab resistant: the FiGhTeR trial

Background: Prognosis of patients affected by metastatic esophageal–gastric junction (EGJ) or gastric cancer (GC) remains dismal. Trastuzumab, an anti-HER2 monoclonal antibody, is the only targeted agent approved for the first-line treatment of patients with HER2-overexpressing advanced EGJ or GC in...

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Main Authors: Valeria Merz, Camilla Zecchetto, Francesca Simionato, Alessandro Cavaliere, Simona Casalino, Michele Pavarana, Simone Giacopuzzi, Maria Bencivenga, Anna Tomezzoli, Raffaela Santoro, Vita Fedele, Serena Contarelli, Irene Rossi, Serena Giacomazzi, Martina Pasquato, Cristiana Piazzola, Stefano Milleri, Giovanni de Manzoni, Davide Melisi
Format: Article
Language:English
Published: SAGE Publishing 2020-07-01
Series:Therapeutic Advances in Medical Oncology
Online Access:https://doi.org/10.1177/1758835920937889
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author Valeria Merz
Camilla Zecchetto
Francesca Simionato
Alessandro Cavaliere
Simona Casalino
Michele Pavarana
Simone Giacopuzzi
Maria Bencivenga
Anna Tomezzoli
Raffaela Santoro
Vita Fedele
Serena Contarelli
Irene Rossi
Serena Giacomazzi
Martina Pasquato
Cristiana Piazzola
Stefano Milleri
Giovanni de Manzoni
Davide Melisi
author_facet Valeria Merz
Camilla Zecchetto
Francesca Simionato
Alessandro Cavaliere
Simona Casalino
Michele Pavarana
Simone Giacopuzzi
Maria Bencivenga
Anna Tomezzoli
Raffaela Santoro
Vita Fedele
Serena Contarelli
Irene Rossi
Serena Giacomazzi
Martina Pasquato
Cristiana Piazzola
Stefano Milleri
Giovanni de Manzoni
Davide Melisi
author_sort Valeria Merz
collection DOAJ
description Background: Prognosis of patients affected by metastatic esophageal–gastric junction (EGJ) or gastric cancer (GC) remains dismal. Trastuzumab, an anti-HER2 monoclonal antibody, is the only targeted agent approved for the first-line treatment of patients with HER2-overexpressing advanced EGJ or GC in combination with chemotherapy. However, patients invariably become resistant during this treatment. We recently identified the overexpression of fibroblast growth factor (FGF) receptor 3 (FGFR3) as a molecular mechanism responsible for trastuzumab resistance in GC models, providing the rationale for the inhibition of this receptor as a potential second-line strategy in this disease. Pemigatinib is a selective, potent, oral inhibitor of FGFR1, 2, and 3. Methods: The FiGhTeR trial is a phase II, single-arm, open-label study to assess safety and activity of the FGFR inhibitor pemigatinib as second-line treatment strategy in metastatic EGJ/GC patients progressing under trastuzumab-containing therapies. The primary endpoint is the 12-week progression-free survival rate. Plasma and tumor tissue samples will be collected for translational research analyses at baseline, during treatment, and at progression on pemigatinib. Discussion: Co-alterations in genes coding for different tyrosine-kinase receptors are emerging as relevant mechanisms of acquired resistance to anti-HER2 therapeutic strategies in GC. In particular, our group has recently identified that in GC models the overexpression of FGFR3 sustains the acquired resistance to trastuzumab. This trial aims to assess the safety, tolerability and activity of the FGFR inhibitor pemigatinib as a second-line treatment in metastatic EGJ/GC patients refractory to first-line trastuzumab-containing therapies. Furthermore, this study offers the opportunity to prospectively study mechanisms and pathways involved in trastuzumab resistance. Protocol number: CRC2017_02 EudraCT Number: 2017-004522-14
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spelling doaj.art-4b431a90dd5e4990a7ff617f4d3684eb2022-12-22T00:35:12ZengSAGE PublishingTherapeutic Advances in Medical Oncology1758-83592020-07-011210.1177/1758835920937889A phase II trial of the FGFR inhibitor pemigatinib in patients with metastatic esophageal–gastric junction/gastric cancer trastuzumab resistant: the FiGhTeR trialValeria MerzCamilla ZecchettoFrancesca SimionatoAlessandro CavaliereSimona CasalinoMichele PavaranaSimone GiacopuzziMaria BencivengaAnna TomezzoliRaffaela SantoroVita FedeleSerena ContarelliIrene RossiSerena GiacomazziMartina PasquatoCristiana PiazzolaStefano MilleriGiovanni de ManzoniDavide MelisiBackground: Prognosis of patients affected by metastatic esophageal–gastric junction (EGJ) or gastric cancer (GC) remains dismal. Trastuzumab, an anti-HER2 monoclonal antibody, is the only targeted agent approved for the first-line treatment of patients with HER2-overexpressing advanced EGJ or GC in combination with chemotherapy. However, patients invariably become resistant during this treatment. We recently identified the overexpression of fibroblast growth factor (FGF) receptor 3 (FGFR3) as a molecular mechanism responsible for trastuzumab resistance in GC models, providing the rationale for the inhibition of this receptor as a potential second-line strategy in this disease. Pemigatinib is a selective, potent, oral inhibitor of FGFR1, 2, and 3. Methods: The FiGhTeR trial is a phase II, single-arm, open-label study to assess safety and activity of the FGFR inhibitor pemigatinib as second-line treatment strategy in metastatic EGJ/GC patients progressing under trastuzumab-containing therapies. The primary endpoint is the 12-week progression-free survival rate. Plasma and tumor tissue samples will be collected for translational research analyses at baseline, during treatment, and at progression on pemigatinib. Discussion: Co-alterations in genes coding for different tyrosine-kinase receptors are emerging as relevant mechanisms of acquired resistance to anti-HER2 therapeutic strategies in GC. In particular, our group has recently identified that in GC models the overexpression of FGFR3 sustains the acquired resistance to trastuzumab. This trial aims to assess the safety, tolerability and activity of the FGFR inhibitor pemigatinib as a second-line treatment in metastatic EGJ/GC patients refractory to first-line trastuzumab-containing therapies. Furthermore, this study offers the opportunity to prospectively study mechanisms and pathways involved in trastuzumab resistance. Protocol number: CRC2017_02 EudraCT Number: 2017-004522-14https://doi.org/10.1177/1758835920937889
spellingShingle Valeria Merz
Camilla Zecchetto
Francesca Simionato
Alessandro Cavaliere
Simona Casalino
Michele Pavarana
Simone Giacopuzzi
Maria Bencivenga
Anna Tomezzoli
Raffaela Santoro
Vita Fedele
Serena Contarelli
Irene Rossi
Serena Giacomazzi
Martina Pasquato
Cristiana Piazzola
Stefano Milleri
Giovanni de Manzoni
Davide Melisi
A phase II trial of the FGFR inhibitor pemigatinib in patients with metastatic esophageal–gastric junction/gastric cancer trastuzumab resistant: the FiGhTeR trial
Therapeutic Advances in Medical Oncology
title A phase II trial of the FGFR inhibitor pemigatinib in patients with metastatic esophageal–gastric junction/gastric cancer trastuzumab resistant: the FiGhTeR trial
title_full A phase II trial of the FGFR inhibitor pemigatinib in patients with metastatic esophageal–gastric junction/gastric cancer trastuzumab resistant: the FiGhTeR trial
title_fullStr A phase II trial of the FGFR inhibitor pemigatinib in patients with metastatic esophageal–gastric junction/gastric cancer trastuzumab resistant: the FiGhTeR trial
title_full_unstemmed A phase II trial of the FGFR inhibitor pemigatinib in patients with metastatic esophageal–gastric junction/gastric cancer trastuzumab resistant: the FiGhTeR trial
title_short A phase II trial of the FGFR inhibitor pemigatinib in patients with metastatic esophageal–gastric junction/gastric cancer trastuzumab resistant: the FiGhTeR trial
title_sort phase ii trial of the fgfr inhibitor pemigatinib in patients with metastatic esophageal gastric junction gastric cancer trastuzumab resistant the fighter trial
url https://doi.org/10.1177/1758835920937889
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