Trastuzumab Rezetecan (T-DXh) in HER2+ Breast Cancer With Non-pCR After TCbHP
A Single-Arm, Exploratory Study of 4 Additional Cycles of Trastuzumab Rezetecan (T-DXh) as Neoadjuvant Therapy in Patients With Early or Locally Advanced HER2-Positive Breast Cancer Who Have Non-pCR After TCbHP Neoadjuvant Therapy
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Undersøgelsestype
Undersøgelsestype
Tilmelding (Anslået)
Tilmelding
Fase
Fase
- Fase 4
Kontakter og lokationer
Studiekontakt
Studiekontakt
- Navn: Xiaoan Liu
- Telefonnummer: 86-25-83714511
- E-mail: liuxiaoan@126.com
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Beskrivelse
Inclusion Criteria:
- Age ≥ 18 years.
- For premenopausal and perimenopausal patients: negative pregnancy test and agreement to use reliable contraception during the treatment period.
- Pathologically confirmed HER2-positive invasive breast cancer (IHC 3+ or IHC 2+ with FISH+).
- Completed standard neoadjuvant TCbHP (taxane + carboplatin + trastuzumab + pertuzumab) with imaging assessment not achieving clinical complete remission (non-cCR).
- Agree to undergo a core needle biopsy.
- ECOG performance status 0 or 1.
- Adequate organ function meeting the following criteria: hemoglobin ≥ 90 g/L, white blood cell count ≥ 3.5 × 10^9/L, platelet count ≥ 100 × 10^9/L, absolute neutrophil count ≥ 1.5 × 10^9/L, AST/ALT ≤ 3 × ULN, total bilirubin ≤ 1.5 × ULN, serum creatinine ≤ 1.5 × ULN.
- No myocardial ischemia on ECG; New York Heart Association (NYHA) functional class I; left ventricular ejection fraction (LVEF) ≥ 55% by echocardiography; cardiac troponin I (cTnI) and brain natriuretic peptide (BNP) within normal limits.
- Signed informed consent.
Exclusion Criteria:
- Male breast cancer or inflammatory breast cancer.
- Metastatic breast cancer (Stage IV).
- Concurrent other malignancy or history of other malignancy within the past 5 years, except adequately treated basal cell or squamous cell skin cancer, or carcinoma in situ of the cervix.
- Concurrent other anti-tumor therapy or participation in another clinical trial.
- Severe non-malignant disease that would affect compliance or place the patient at risk.
- Major surgery within 4 weeks prior to start of study treatment or anticipated need for major surgery during the study.
History of allergic reaction or contraindication to any component of the study drug.
- Dementia, mental abnormality, or any psychiatric illness that interferes with understanding of the informed consent.
- Any other condition assessed by the investigator as unsuitable for inclusion.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: N/A
- Interventionel model: Enkelt gruppeopgave
- Maskning: Ingen (Åben etiket)
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
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Eksperimentel: Experimental: Trastuzumab Rezetecan (T-DXh) as Continued Neoadjuvant Therapy
Patients with residual invasive disease after standard 6 cycles of TCbHP neoadjuvant therapy receive 4 cycles of Trastuzumab Rezetecan (T-DXh) 4.8 mg/kg intravenously every 3 weeks (Q3W), followed by radical surgery. After surgery:
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An anti-HER2 antibody-drug conjugate (ADC) consisting of a humanized HER2-targeting monoclonal antibody (trastuzumab) conjugated to a DNA topoisomerase I inhibitor (SHR169265) via a cleavable tetrapeptide linker.
Andre navne:
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Total Pathological Complete Response (tpCR)
Tidsramme: At the time of surgery, approximately 12 weeks after the start of the 4-cycle Trastuzumab Rezetecan treatment.
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Absence of invasive residual cancer in both the breast primary tumor and axillary lymph nodes (ypT0/is, ypN0) after neoadjuvant therapy and surgery.
Presence of ductal carcinoma in situ (DCIS) is allowed.
|
At the time of surgery, approximately 12 weeks after the start of the 4-cycle Trastuzumab Rezetecan treatment.
|
Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Event-Free Survival (EFS)
Tidsramme: From first dose up to 5 years after last patient enrolled.
|
Time from first dose of study treatment to the earliest occurrence of any of the following: disease progression (per RECIST 1.1), local/regional/distant recurrence, second primary tumor (breast or other), or death from any cause.
|
From first dose up to 5 years after last patient enrolled.
|
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Overall Survival (OS)
Tidsramme: From first dose up to 5 years after last patient enrolled.
|
Time from first dose of study treatment to death from any cause.
|
From first dose up to 5 years after last patient enrolled.
|
|
3-Year Invasive Disease-Free Survival (iDFS) Rate
Tidsramme: 3 years after surgery.
|
Percentage of patients who are free from invasive disease at 3 years after surgery.
Invasive disease events include ipsilateral invasive breast tumor recurrence, local/regional invasive recurrence, distant recurrence, contralateral invasive breast cancer, second primary non-breast invasive cancer, or death from any cause.
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3 years after surgery.
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Incidence of Adverse Events (AEs)
Tidsramme: From signing of informed consent until 28 days after the last dose of study treatment.
|
Number of participants experiencing adverse events.
AEs are graded according to the National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) version 6.0.
|
From signing of informed consent until 28 days after the last dose of study treatment.
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Datoer for undersøgelser
Studer store datoer
Studiestart (Anslået)
Studiestart
Primær færdiggørelse (Anslået)
Primær færdiggørelse
Studieafslutning (Anslået)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- 26-OBU-JS-BC-II-017
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
IPD-planbeskrivelse
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
Studerer et amerikansk FDA-reguleret lægemiddelprodukt
Studerer et amerikansk FDA-reguleret enhedsprodukt
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