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Neoadjuvant Chemotherapy + PD-1 Inhibitor+Different Radiotherapy Fractionations for HR+/HER2- Breast Cancer

NCT06639672 · Status: NOT_YET_RECRUITING · Phase: PHASE2 · Type: INTERVENTIONAL · Enrollment: 60

Last updated 2024-10-15

No results posted yet for this study

Summary

For the hormone receptor-positive (HR+)/human epidermal growth factor receptor 2-negative (HER2-) subtype of breast cancer, although surgical, radiotherapy, and endocrine treatments have shown better survival, this subtype has a relatively poor response to neoadjuvant chemotherapy and immunotherapy, with an approximately pCR of 20%. The low immunogenicity result in suboptimal pCR and objective response rates for this group. Therefore, there is an urgent need to explore new, highly effective, and low-toxicity treatment strategies to further improve the efficacy of HR+/HER2- breast cancer. 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 chemotherapy combined with PD-1 inhibitor and different radiotherapy fractionations in the neoadjuvant treatment of HR+/HER2- breast cancer.

Conditions

  • HR+HER2- Breast Cancer

Interventions

DRUG

Chemotherapy+PD-1 inhibitor+8Gy x 3f

Radiotherapy: 8Gy x 3f, once every other day; Chemotherapy: Cycles 1-4: Albumin-bound paclitaxel: 260 mg/m², 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

Chemotherapy+PD-1 inhibitor+16Gy x 1f

Radiotherapy: 16Gy x 1f; Chemotherapy: Cycles 1-4: Albumin-bound paclitaxel: 260 mg/m², 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

Chemotherapy+PD-1 inhibitor+2.67Gy x 15f

Radiotherapy: 2.67Gy x 15f; Chemotherapy: Cycles 1-4: Albumin-bound paclitaxel: 260 mg/m², 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

Chemotherapy+PD-1 inhibitor+0.5Gy x 12-18f

Radiotherapy: 0.5Gy x 12-18f; Chemotherapy: Cycles 1-4: Albumin-bound paclitaxel: 260 mg/m², 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

Sponsors & Collaborators

  • Lei Liu

    lead OTHER

Study Design

Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
65 Years
Sex
FEMALE
Healthy Volunteers
No

Timeline & Regulatory

Start
2024-11-01
Primary Completion
2026-05-01
Completion
2031-05-01

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06639672 on ClinicalTrials.gov