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Autologous Fat Grafting for Total Breast Reconstruction in Irradiated Breast Cancer Patients (AFT-R)

9. června 2026 aktualizováno: Maastricht University Medical Center

Autologous Fat Grafting for Total Breast Reconstruction in Irradiated Patients

The goal of this clinical trial is to learn whether autologous fat transfer (AFT) is as effective and safe as Deep Inferior Epigastric Perforator (DIEP) flap breast reconstruction in irradiated breast cancer patients following mastectomy. It will also evaluate patient satisfaction, quality of life, complication rates, and cost-effectiveness of both reconstruction techniques. The main questions it aims to answer are:

Does AFT result in non-inferior patient satisfaction with the reconstructed breast compared to DIEP flap reconstruction 12 months after the final operation? Does AFT result in fewer major complications and improved cost-effectiveness compared to DIEP flap reconstruction? Are quality of life outcomes and oncologic safety comparable between AFT and DIEP flap reconstruction in irradiated patients?

Researchers will compare AFT to DIEP flap reconstruction to see if AFT can provide similar reconstructive outcomes with lower morbidity and fewer complications in irradiated breast cancer patients.

Participants will:

Undergo breast reconstruction using either AFT or DIEP flap reconstruction Attend follow-up visits for clinical examinations, imaging, and assessment of complications Complete questionnaires about breast satisfaction, quality of life, and recovery during follow-up Be monitored for oncologic safety and reconstructive outcomes for 12 months after the final operation

Přehled studie

Typ studie

Intervenční

Zápis (Odhadovaný)

280

Fáze

  • Nelze použít

Kontakty a umístění

Tato část poskytuje kontaktní údaje pro ty, kteří studii provádějí, a informace o tom, kde se tato studie provádí.

Studijní místa

    • Limburg
      • Maastricht, Limburg, Holandsko, 6229

Kritéria účasti

Výzkumníci hledají lidi, kteří odpovídají určitému popisu, kterému se říká kritéria způsobilosti. Některé příklady těchto kritérií jsou celkový zdravotní stav osoby nebo předchozí léčba.

Kritéria způsobilosti

Věk způsobilý ke studiu

  • Dospělý
  • Starší dospělý

Přijímá zdravé dobrovolníky

Ne

Popis

Inclusion Criteria:

  • Female, aged >18 years.
  • BMI between > 22 and <35 kg/m2
  • History of breast cancer treated with mastectomy (minimally 3 months after mastec-tomy) and post mastectomy chest wall radiotherapy (completed ≥6 months before en-rollment).
  • May include contralateral/bilateral prophylactic mastectomy if at least one side had cancer and radiation.
  • Desires autologous breast reconstruction and accepts randomization between AFT and DIEP.
  • Medically fit for surgery (ASA I-III).
  • Sufficient donor tissue for both AFT (enough fat) and DIEP (suitable abdominal tissue and vasculature).
  • No evidence of active cancer at enrollment; remission confirmed.
  • Able to wear the EVE device (if randomized in AFT).
  • Capable of understanding study information and questionnaires (Dutch or English), willing to give informed consent, and able to comply with follow-up.

Exclusion Criteria:

  • Prior autologous breast reconstruction on the intended side. BMI <22 or >35 kg/m2
  • Contraindication to DIEP flap (e.g., prior abdominoplasty or abdominal scars affecting perforators).
  • Contraindication to AFT (e.g., insufficient fat or conditions impairing fat graft viability).
  • Current chemotherapy or completed less than 4 weeks prior to enrollment.
  • Serious uncontrolled comorbidities making elective surgery unsafe (e.g., unstable heart disease, severe coagulopathy, end-stage organ failure).
  • Active smoker or not abstinent for at least 6 weeks pre-operatively.
  • Pregnant at time of enrollment.
  • In case low compliance is expected or an inability to comply with study protocol, including unwillingness to undergo either AFT or DIEP, or inability to complete follow-up (due to language, cognitive issues, or relocation plans).
  • Previous enrollment in this trial (patients can only be included once, even if later presenting for contralateral reconstruction).
  • Allergy to lidocaine or silicone

Studijní plán

Tato část poskytuje podrobnosti o studijním plánu, včetně toho, jak je studie navržena a co studie měří.

Jak je studie koncipována?

Detaily designu

  • Primární účel: Léčba
  • Přidělení: Randomizované
  • Intervenční model: Paralelní přiřazení
  • Maskování: Žádné (otevřený štítek)

Zbraně a zásahy

Skupina účastníků / Arm
Intervence / Léčba
Aktivní komparátor: DIEP reconstruction
Deep inferior epigastric perforator flap as breast reconstruction
Experimentální: AFT
Autologous fat transfer as total breast reconstruction

Co je měření studie?

Primární výstupní opatření

Měření výsledku
Popis opatření
Časové okno
to determine whether autologous fat transfer (AFT) is non-inferior to DIEP flap breast re-construction regarding breast satisfaction, as measured by the BREAST-Q, 12 months after the final reconstructive procedure in irradiated breast cancer patients;
Časové okno: 12 months
One of the primary outcomes is the BREAST-Q "Satisfaction with Breasts" score at 12 months post-reconstruction. This validated, patient-reported measure (0-100 scale) as-sesses satisfaction with breast appearance and feel.
12 months
to assess whether AFT is superior to DIEP flap reconstruction in terms of the incidence of major complications requiring reoperation or hospital readmission.
Časové okno: 12 months
The second primary outcome measure is the incidence of major complications (i.e. complications requiring reoperation or hospital readmission such as hematoma, venous/arterial insufficiency, partial/total flap loss, and infection/abscess).
12 months
cost-effectiveness of AFT compared with DIEP flap reconstruction will be evaluated.
Časové okno: 12 months
The third primary outcome is cost-effective-ness. We will collect detailed healthcare and societal costs per patient using hospital records, CRFs, and a study-adapted patient-reported iMCQ and iPCQ (for health care resource use and productivity loss). QALYs will be calculated from EQ-5D-5L data at multiple timepoints. We will compare cost per QALY (ICER) between AFT and DIEP, and conduct a budget impact analysis.
12 months

Sekundární výstupní opatření

Měření výsledku
Popis opatření
Časové okno
Physical Well-being: Abdomen (BREAST-Q)
Časové okno: 12 months
Physical Well-being: Abdomen (donor site), assessed using the BREAST-Q Reconstruction Module. Scores are transformed to a scale ranging from 0 to 100, with higher scores indicating better physical well-being of the abdominal donor site.
12 months
Complications (Minor & General)
Časové okno: 12 months
Incidence of minor recipient-site and donor-site com-plications (i.e. complications taking care of at the outpatient clinic) managed conserva-tively (e.g. wound problems/dehiscence, infection, seroma, hematoma, and abdominal bulging), and any general (systemic) complications related to surgery or hospitalization (e.g. pulmonary embolism, pneumonia).
12 months
Oncologic Safety
Časové okno: 12 months
Monitor and compare breast cancer recurrence rates using routine follow-up and PALGA registry to confirm AFT's oncologic safety.
12 months
Sensory Recovery
Časové okno: 12 months
Evaluate return of breast skin sensation at 12 months with mono-filament testing to compare sensory outcomes between techniques [in MUMC+ only].
12 months
Physical Function and Pain
Časové okno: 12 months
We will assess post-mastectomy pain and phantom sensations using relevant BREAST-Q items or a brief questionnaire. For donor site function, DIEP patients may be asked about core strength (e.g. sit-ups), while AFT patients will be monitored for minor issues like contour irreg-ularities. Assessments will be based on patient reports and clinical exam.
12 months
Breast Aesthetics & Volume
Časové okno: 12 months
Breast volume and shape assessed 12 months after reconstruction using 3D Vectra photography and the BREAST-V volume calculator (https://braflap.com/breast-v/, Sternal Notch - Nipple distance [cm], Fold Projection - Inframammary Fold distance [cm], and Nipple - Inframammary Fold distance [cm]) . Fat graft retention in the AFT group will be estimated by total grafted volume versus final breast volume. Standardized photographs (2D and 3D) will document cosmetic out-comes which can be assessed by a an expert panel.
12 months
Radiation-Associated Changes
Časové okno: 12 months
We will grade radiation fibrosis/telangiectasia in the chest skin at baseline (just before recon) and at 12 months, using the Common Terminology Criteria for Adverse Events (CTCAE) score (for radiation dermatitis/fibrosis). If AFT improves the pliability or vascularity of skin, we might see an improvement in grade (e.g. from CTCAE 2 to 1). If DIEP flap breast reconstruction brings fresh skin, the radiated skin might be partially replaced or supplemented. This is some-what subjective, but we will attempt consistent grading. Also, if any ulcers or non-healing radi-ation damage was present, we will see if healed after reconstruction
12 months
Physical Well-being: Chest (BREAST-Q)
Časové okno: 12 months
Physical Well-being: Chest, assessed using the BREAST-Q Reconstruction Module. Scores are transformed to a scale ranging from 0 to 100, with higher scores indicating better physical well-being of the chest.
12 months
Sexual Well-being (BREAST-Q)
Časové okno: 12 months
Sexual Well-being, assessed using the BREAST-Q Reconstruction Module. Scores are transformed to a scale ranging from 0 to 100, with higher scores indicating better sexual well-being.
12 months
Breast Sensation (BREAST-Q)
Časové okno: 12 months
Breast Sensation, assessed using the BREAST-Q Sensation Module. Scores are transformed to a scale ranging from 0 to 100, with higher scores indicating better breast sensation.
12 months
Donor Site Satisfaction (BODY-Q)
Časové okno: 12 months
Satisfaction with donor site appearance, assessed using the BODY-Q. Scores are transformed to a scale ranging from 0 to 100, with higher scores indicating greater satisfaction with the donor site.
12 months
Adverse Effects of Radiation (BREAST-Q)
Časové okno: 12 months
Adverse Effects of Radiation, assessed using the BREAST-Q Reconstruction Module. Scores are transformed to a scale ranging from 0 to 100. Specify according to the scoring manual whether higher scores indicate fewer or more adverse effects of radiation.
12 months

Spolupracovníci a vyšetřovatelé

Zde najdete lidi a organizace zapojené do této studie.

Termíny studijních záznamů

Tato data sledují průběh záznamů studie a předkládání souhrnných výsledků na ClinicalTrials.gov. Záznamy ze studií a hlášené výsledky jsou před zveřejněním na veřejné webové stránce přezkoumány Národní lékařskou knihovnou (NLM), aby se ujistily, že splňují specifické standardy kontroly kvality.

Hlavní termíny studia

Začátek studia (Odhadovaný)

1. července 2026

Primární dokončení (Odhadovaný)

1. července 2032

Dokončení studie (Odhadovaný)

1. července 2032

Termíny zápisu do studia

První předloženo

12. května 2026

První předloženo, které splnilo kritéria kontroly kvality

9. června 2026

První zveřejněno (Aktuální)

11. června 2026

Aktualizace studijních záznamů

Poslední zveřejněná aktualizace (Aktuální)

11. června 2026

Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality

9. června 2026

Naposledy ověřeno

1. června 2026

Více informací

Termíny související s touto studií

Další identifikační čísla studie

  • NL-010887
  • 2025008144 (Jiné číslo grantu/financování: Zorginstituut Nederland)

Plán pro data jednotlivých účastníků (IPD)

Plánujete sdílet data jednotlivých účastníků (IPD)?

NE

Informace o lécích a zařízeních, studijní dokumenty

Studuje lékový produkt regulovaný americkým FDA

Ne

Studuje produkt zařízení regulovaný americkým úřadem FDA

Ne

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