Hypofractionated vs Conventional RT After Prosthetic Breast Reconstruction

Trial statusRecruiting
Trial phasePhase 3
Trial typeInterventional
Biological sexFemale
Age18-75
SponsorCancer Institute and Hospital, Chinese Academy of Medical Sciences

About this trial

This study investigates the safety and efficacy of hypofractionated radiotherapy (HFRT) versus conventional fractionated radiotherapy (CFRT) in breast cancer patients undergoing total mastectomy with prosthetic reconstruction.

Study Design Population: Patients with high-risk breast cancer after mastectomy and immediate implant reconstruction.

Intervention:

HFRT Arm: 43.5 Gy in 15 fractions (2.9 Gy/fraction, 3 weeks). Control Arm: CFRT (50 Gy in 25 fractions, 2 Gy/fraction, 5 weeks). Endpoints Primary: Reconstruction failure rate (e.g., implant removal, capsular contracture)

Eligibility criteria

Qualifiers

Female, aged 18-75 years

Karnofsky Performance Status ≥60

Histopathologically confirmed invasive breast adenocarcinoma

Total mastectomy [with or without nipple-areolar complex preservation] + axillary dissection/sentinel lymph node biopsy + implant/expander placement R0 resection with negative margins

Disqualifiers

Prior radiotherapy to chest wall or nodal regions

Pregnancy or lactation

T4 stage disease

Autologous breast reconstruction of the irradiated breast

Trial design

Treatments tested in this trial

  • hypofractionated radiotherapy
  • conventional fractionated radiotherapy

Treatment groups

506 Participants
are divided into 2 treatment groups