Evaluation of [68Ga]Ga-NOTA-anti-HER2-sdAb PET/CT for Predicting Pathological Complete Response After Neoadjuvant Chemotherapy in HER2 Positive Early Breast Cancer (GATHER)
22. juli 2026 oppdatert av: Centre Henri Becquerel
Evaluation of [68Ga]Ga-NOTA-anti-HER2-sdAb PET/CT for Predicting Pathological Complete Response After Neoadjuvant Chemotherapy in HER2 Positive Early Breast Cancer (GATHER): a Study Protocol for a Monocentric, Prospective, Interventional, Phase 2, Imaging Biomarker Trial.
The GATHER trial aim to evaluate the diagnostic performance of [68Ga]Ga-NOTA-anti-HER2-sdAb PET/CT in predicting pCR following neoadjuvant chemotherapy.
This study is part of the development of new functional, non-invasive approaches with the aim of offering personalized therapeutic approaches.
Studieoversikt
Status
Rekruttering
Forhold
Intervensjon / Behandling
Detaljert beskrivelse
In early-stage HER2-positive breast cancer, neoadjuvant chemotherapy is frequently required, and pathological complete response (pCR) correlates with excellent prognosis.
However, no non-invasive imaging method reliably predicts pCR, making surgery mandatory despite its aesthetic, functional, and psychological burden.
Recently, new functional imaging tracers targeting the HER2 protein have been developed.
Among these, [68Ga]Ga-NOTA-anti-HER2-sdAb is of particular interest due to its molecular characteristic; it has demonstrated favorable safety profile and ability to identify HER2+ cells in vivo.
This trial evaluates its ability to predict pCR, with the prospect of paving the way for future therapeutic de escalation and surgical sparing.
Studietype
Intervensjonell
Registrering (Antatt)
42
Fase
- Fase 2
Kontakter og plasseringer
Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.
Studiekontakt
- Navn: Doriane Richard, PhD
- Telefonnummer: +33232082985
- E-post: doriane.richard@chb.unicancer.fr
Studer Kontakt Backup
- Navn: Florian Clatot, MD, PhD
- Telefonnummer: +33232082981
- E-post: florian.clatot@chb.uncancer.fr
Studiesteder
-
-
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Rouen, Frankrike
- Rekruttering
- Centre Henri Becquerel
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Ta kontakt med:
- Florian Clatot, MD, PhD
- Telefonnummer: +33232082981
- E-post: florian.clatot@chb.unicancer.fr
-
-
Deltakelseskriterier
Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
- Voksen
- Eldre voksen
Tar imot friske frivillige
Nei
Beskrivelse
Inclusion Criteria:
- Female aged 18 years or older
- Histologically proven HER2-positive early breast cancer, defined as IHC 3+ or IHC 2+ with ISH amplification
- Indication for neoadjuvant chemotherapy combined with anti-HER2 targeted therapy followed by surgery, as determined by a multidisciplinary tumor board
- ECOG performance status of 0 or 1
- Affiliated to or beneficiary of a social protection scheme
- Written informed consent signed prior to any study-specific procedure
Exclusion Criteria:
Pregnant or breastfeeding women
- Patient not treated with curative intent
- History of ipsilateral breast cancer treated by surgery and/or radiotherapy
- Lobular histology
- Known contraindication or hypersensitivity to [68Ga]Ga-NOTA-anti-HER2-sdAb or any of its radiopharmaceutical excipients
- Known contraindication or hypersensitivity to [18F]F-FDG or any of its radiopharmaceutical excipients
- Concurrent enrollment in another clinical trial evaluating radiopharmaceuticals
- Patient under guardianship, curatorship, or judicial protection
- Patient deprived of liberty
- Inability to understand the study or comply with trial constraints due to linguistic, psychological, or geographical barriers
Studieplan
Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Diagnostisk
- Tildeling: N/A
- Intervensjonsmodell: Enkeltgruppeoppdrag
- Masking: Ingen (Open Label)
Våpen og intervensjoner
Deltakergruppe / Arm |
Intervensjon / Behandling |
|---|---|
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Eksperimentell: [68Ga]Ga-NOTA-anti-HER2-sdAb Positron Emission Tomography
Patients will undergo an [68Ga]Ga-NOTA-anti-HER2-sdAb PET/CT before neoadjuvant chemotherapy and 15 days prior the scheduled surgery
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Patients will undergo an [68Ga]Ga-NOTA-anti-HER2-sdAb PET/CT before neoadjuvant chemotherapy and 15 days prior the scheduled surgery
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Hva måler studien?
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
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Concordance rate between the response estimated by [68Ga]Ga-NOTA-anti-HER2-sdAb PET/CT and the invasive pathological complete response
Tidsramme: 2 weeks after surgery
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The concordance rate is defined as the proportion of patients correctly classified by the post-therapeutic PET/CT compared to the gold standard histopathological assessment (ypT0/is ypN0).
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2 weeks after surgery
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Sekundære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
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Concordance rate between the response estimated by [68Ga]Ga-NOTA-anti-HER2-sdAb PET/CT and the pCR on both invasive and non-invasive components
Tidsramme: two weeks after surgery
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The concordance rate is calculated as the proportion of correctly classified patients compared to the non-invasive pCR definition (ypT0 ypN0), in addition to the invasive definition (ypT0/is ypN0)
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two weeks after surgery
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Comparison of the diagnostic performance of [68Ga]Ga-NOTA-anti-HER2-sdAb PET/CT against other conventional imaging modalities in predicting the invasive pCR
Tidsramme: Two weeks after surgery
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ΔSUV is defined as the relative change in SUVmax between the baseline and post-therapeutic [68Ga]Ga-NOTA-anti-HER2-sdAb PET/CT, compared according to invasive pathological complete response (ypT0/is ypN0).
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Two weeks after surgery
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Samarbeidspartnere og etterforskere
Det er her du vil finne personer og organisasjoner som er involvert i denne studien.
Sponsor
Etterforskere
- Hovedetterforsker: Florian Clatot, MD, PhD, Centre Henri Becquerel
Studierekorddatoer
Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.
Studer hoveddatoer
Studiestart (Faktiske)
15. juli 2026
Primær fullføring (Antatt)
1. september 2027
Studiet fullført (Antatt)
1. mars 2028
Datoer for studieregistrering
Først innsendt
12. mai 2026
Først innsendt som oppfylte QC-kriteriene
12. mai 2026
Først lagt ut (Faktiske)
18. mai 2026
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
23. juli 2026
Siste oppdatering sendt inn som oppfylte QC-kriteriene
22. juli 2026
Sist bekreftet
1. juli 2026
Mer informasjon
Begreper knyttet til denne studien
Nøkkelord
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
- CHB25.04
- 2025-523286-23-00 (Ctis)
Legemiddel- og utstyrsinformasjon, studiedokumenter
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Nei
Studerer et amerikansk FDA-regulert enhetsprodukt
Nei
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