Hypofractionated vs. Conventionally Fractionated Postmastectomy Radiotherapy After Implant-Based Reconstruction
Outcomes of Hypofractionated Versus Conventionally Fractionated Radiotherapy After Mastectomy and Implant-Based Reconstruction: A Prospective, Randomized Controlled, Non-Inferiority Trial
This is a prospective, randomized controlled, non-inferiority clinical trial designed to compare the outcomes of hypofractionated radiotherapy versus conventionally fractionated radiotherapy following mastectomy and implant-based breast reconstruction. The primary objective is to evaluate whether hypofractionated radiotherapy is non-inferior to conventionally fractionated radiotherapy regarding the rate of unplanned reoperation.
Studieoversigt
Status
Betingelser
Intervention / Behandling
Undersøgelsestype
Tilmelding (Anslået)
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiekontakt
- Navn: Jinli Ma, MD, PhD
- Telefonnummer: +86-21-64175590
- E-mail: ma-jinli@outlook.com
Studiesteder
-
-
-
Shanghai, Kina, 200032
- Rekruttering
- Fudan University Shanghai Cancer Center
-
Kontakt:
- Xiaofang Wang
- Telefonnummer: 86-21-64175590
- E-mail: xiaofang0708@yeah.net
-
-
Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- Female patients aged ≥ 18 years.
- Pathologically confirmed unilateral primary invasive breast cancer.
- Underwent skin-sparing (SSM) or nipple-sparing mastectomy (NSM) with axillary staging (sentinel lymph node biopsy or axillary lymph node dissection).
- Underwent 1-stage (direct-to-implant) or 2-stage (tissue expander) reconstruction, or implant combined with autologous tissue, with prepectoral or subpectoral placement.
- Received standard neoadjuvant or adjuvant systemic therapy (chemotherapy, endocrine, anti-HER2, or targeted therapy) according to guidelines or clinical trial protocols.
- Definite indication for post-mastectomy chest wall ± regional nodal irradiation according to guidelines (typically c/pT1-3 N0-3 M0).
- Interval of at least 6 weeks between reconstruction surgery and the initiation of radiotherapy.
- ECOG performance status 0-1.
- Prior non-breast malignancy permitted if disease-free for > 5 years with low recurrence risk; prior cervical or colon carcinoma in situ, melanoma in situ, basal cell carcinoma, or squamous cell skin carcinoma permitted regardless of disease-free interval.
- Estimated life expectancy ≥ 10 years.
- Written informed consent provided.
Exclusion Criteria:
- Pregnant or lactating patients.
- Prior history of breast cancer.
- Bilateral breast cancer.
- Prior radiotherapy to the ipsilateral chest wall or regional lymph node areas.
- T4 disease (including, but not limited to, inflammatory breast cancer, regardless of response to neoadjuvant systemic therapy).
- Non-breast malignancy within the past 5 years (except cervical or colon carcinoma in situ, melanoma in situ, basal cell carcinoma, or squamous cell skin carcinoma).
- Severe non-malignant comorbidities (e.g., cardiovascular disease, pulmonary disease, systemic lupus erythematosus, or scleroderma) precluding radiotherapy tolerance or follow-up compliance.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Ingen (Åben etiket)
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
|---|---|
|
Eksperimentel: Hypofraktioneret strålebehandling
|
42.56Gy/16Fx, 2.66Gy/Fx, once daily |
|
Aktiv komparator: Conventionally fractionated radiotherapy
|
50Gy/25Fx, 2Gy/Fx, once daily |
Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
The rate of unplanned reoperation
Tidsramme: 3 years
|
Surgery performed to treat complications related to breast reconstruction. |
3 years
|
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Implant-Based Breast Reconstruction Complications
Tidsramme: 3 years
|
Defined as adverse events following implant-based breast reconstruction, including reconstruction-related surgical complications and implant-specific complications. |
3 years
|
|
Locoregional recurrence
Tidsramme: 5 years
|
Locoregional recurrence is defined as the first documented recurrence in the ipsilateral chest wall or regional nodes. |
5 years
|
|
Distant metastasis
Tidsramme: 5 years
|
Distant metastasis is the first confirmed recurrence in any distant organ/site beyond the ipsilateral chest wall and regional nodes. |
5 years
|
|
Overall survival
Tidsramme: 5 years
|
Overall survival is the time from randomization to death from any cause. |
5 years
|
Samarbejdspartnere og efterforskere
Sponsor
Datoer for undersøgelser
Studer store datoer
Studiestart (Anslået)
Primær færdiggørelse (Anslået)
Studieafslutning (Anslået)
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- FDRT-BC020
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
Studerer et amerikansk FDA-reguleret lægemiddelprodukt
Studerer et amerikansk FDA-reguleret enhedsprodukt
Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .