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Seponering af vedligeholdelses-HER-2-rettet terapi hos langtidsoverlevere af metastatisk HER-2-positiv brystkræft (Free-HER)

21. september 2026 opdateret af: Elisa Krill Jackson, University of Miami

Free-HER: Afbrydelse af vedligeholdelses-HER-2-rettet terapi hos langtidsoverlevere af metastatisk HER-2-positiv brystkræft

The purpose of this preliminary research study is to see if patients discontinuing maintenance Herceptin and/or other anti-HER-2 treatments with monitoring in addition to radiologic imaging and routine blood work will stay in complete radiological remission and to determine how long patients are able to stay in complete radiological remission without treatment.

Studieoversigt

Status

Aktiv, ikke rekrutterende

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

20

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

    • Florida
      • Miami, Florida, Forenede Stater, 33136
        • University of Miami

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  1. Patients with a diagnosis of HER-2 positive metastatic (Stage IV) breast cancer.

  2. Patients in complete radiological remission (CRR), including a stable bone scan, as determined by computed tomography (CT), positron-emission tomography (PET), or PET-CT.

    a. Patients with brain metastasis are allowed to participate as long as their disease has been treated and radiologically stable for at least 36 months.

  3. Patients must be on the same or current anti-HER-2 directed therapy for at least 36 months.

  4. Archived tumor biopsy available.

  5. Patients with no evidence of circulating tumor deoxyribonucleic acid (ctDNA) as determined by the Signatera assay.

  6. Patients willing to stop maintenance anti-HER-2 directed therapy with close monitoring.

  7. Patients with an Eastern Cooperative Oncology Group (ECOG) performance score from 0 to 2.

  8. Patients ≥ 18 years of age.

  9. Ability to understand and the willingness to sign a written informed consent document.

Exclusion Criteria:

  1. Patients with uncontrolled metastatic disease.
  2. Patients whose disease has been controlled for less than 36 months on the same or current anti-HER-2 therapy.
  3. Patients who are currently receiving or have received treatment for a secondary cancer other than resected non-melanoma skin cancer lesions or in situ cancer within the past 24 months.
  4. Patients positive for ctDNA (which occurs when a patient's blood sample contains ≥2 target markers) with the Signatera assay.
  5. Use of investigational drugs ≤ 28 days prior to study enrollment and during the study.
  6. History or current evidence of any condition, therapy, or laboratory abnormality that might confound the results of the trial, interfere with the patient's participation for the full duration of the trial, or that makes participation in the trial to be not in the best interest of the patient in the opinion of the Investigator.
  7. Patients with impaired decision-making capacity.

Patients who are found to be ctDNA+ at study entry will be recorded as a screen failure (Section 5.4). Their Signatera testing results will be provided to their treating physician to aid in clinical decision-making for disease management and treatment.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Diagnostisk
  • Tildeling: N/A
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: anti-HER-2 Group

Participants in this group will be monitored to see if patients discontinuing maintenance of anti-HER-2 treatments with ctDNA monitoring in addition to radiologic imaging and routine blood work will stay in complete radiological remission. Participants will be in this group for up to 3 years.

Patients assigned to this group will be asked to discontinue anti-HER-2 maintenance treatment.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Feasibility of maintaining remission after discontinuing use of anti-HER-2
Tidsramme: Up to 72 months

The feasibility of maintaining remission of HER-2 will be measured as the proportion of patients who discontinue anti-HER-2 therapy and who remain in remission is assessed by monitoring ctDNA in the blood.

Up to 72 months

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Ability of re-attain remission after ctDNA+ status
Tidsramme: Up to 72 months

Ability to re-attain remission after ctDNA+ status is defined as returning to ctDNA- status within 6 months after testing ctDNA+ during the study. This is assessed by the monitoring of ctDNA in the blood of participants that have tested ctDNA positive after stopping anti-HER-2 maintenance therapy and chose to restart anti-HER-2 therapy.

Up to 72 months
Duration of response (DOR)
Tidsramme: Up to 72 months

The duration of response (DOR) in study participants that have restarted anti-HER-2 therapy measures the time from is ctDNA+ status to overall response rate (ORR). This includes study participants that have ctDNA+ status and have chosen to either restart their previous anti-HER-2 maintenance therapy or have started a new anti-HER-2 therapy. The ORR is determined by blood and imaging monitoring.

Up to 72 months
Diagnostic Accuracy of ctDNA Monitoring Assay to Identify Disease Progression
Tidsramme: Up to 72 months

Diagnostic accuracy is evaluated by comparing disease relapse and/or progression confirmed by imaging compared to study participants ctDNA status.

Up to 72 months

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Efterforskere

  • Ledende efterforsker: Elisa Krill Jackson, MD, University of Miami

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

17. juli 2023

Primær færdiggørelse (Anslået)

31. juli 2027

Studieafslutning (Anslået)

31. juli 2030

Datoer for studieregistrering

Først indsendt

17. juli 2023

Først indsendt, der opfyldte QC-kriterier

17. juli 2023

Først opslået (Faktiske)

25. juli 2023

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

24. september 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

21. september 2026

Sidst verificeret

1. september 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • 20221166
  • NCI-2023-03606 (Registry Identifier: NCI Clinical Trials Reporting Program (NCI CTRP))

Plan for individuelle deltagerdata (IPD)

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