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RECRUITING
NCT06627712
PHASE3

SBRT Combined With PD-1 Inhibitor and Chemotherapy in Early-stage TNBC

Sponsor: West China Hospital

View on ClinicalTrials.gov

Summary

Triple-negative breast cancer (TNBC) presents significant challenges due to its limited treatment options and poor efficacy. While neoadjuvant chemotherapy has improved breast-conserving rates and extended survival for TNBC patients, this subtype still faces issues such as restricted treatment modalities, low pathological response rates, and unfavorable prognosis compared to other subtypes. Studies like Keynote522 and IMpassion031 have shown that combining chemotherapy with immunotherapy yields a pCR rate of 64.8% in early-stage high-risk TNBC patients, suggesting that such combinations can offer substantial benefits. However, the low immunogenicity of breast cancer and the lack of clear predictive molecular markers for effective immunotherapy result in suboptimal pCR and objective response rates for this group. Radiotherapy has systemic immune regulatory effects by promoting the release of antigens from tumor cells, enhancing T-cell infiltration, and directly killing tumor cells. Therefore, this study aims to investigate the efficacy and safety of stereotactic radiotherapy combined with PD-1 inhibitors and chemotherapy in the neoadjuvant treatment of TNBC.

Official title: Stereotactic Body Radiotherapy (SBRT) Combined With PD-1 Inhibitor and Chemotherapy in Early-stage Treatment-naive Triple-negative Breast Cancer Patients: A Multicenter Phase III Clinical Study

Key Details

Gender

FEMALE

Age Range

18 Years - 65 Years

Study Type

INTERVENTIONAL

Enrollment

318

Start Date

2024-11-01

Completion Date

2031-11-01

Last Updated

2026-01-30

Healthy Volunteers

No

Interventions

DRUG

SBRT+PD-1 Inhibitor + Chemotherapy

Radiotherapy: 24Gy/3f, once every other day; Chemotherapy: Cycles 1-4: Albumin-bound paclitaxel: 260 mg/m², IV, administered on day 1 of each cycle; Carboplatin AUC=5, IV, administered on day 1 of each cycle. Cycles 5-8: Epirubicin: 90-100 mg/m², IV, administered on day 1 of each cycle; Cyclophosphamide: 600 mg/m², IV, administered on day 1 of each cycle; Immunotherapy: PD-1 inhibitor, once every three weeks

DRUG

PD-1 Inhibitor + Chemotherapy

Chemotherapy: Cycles 1-4: Albumin-bound paclitaxel: 260 mg/m², IV, administered on day 1 of each cycle; Carboplatin AUC=5, IV, administered on day 1 of each cycle. Cycles 5-8: Epirubicin: 90-100 mg/m², IV, administered on day 1 of each cycle; Cyclophosphamide: 600 mg/m², IV, administered on day 1 of each cycle; Immunotherapy: PD-1 inhibitor, once every three weeks

Locations (1)

West China Hospital, Sichuan University

Sichuan, Chengdu, China