# Ultra-Hypofractionated vs. Moderately Hypofractionated Proton Therapy for Early Breast Cancer After Lumpectomy

> **NCT07135661** · NA · RECRUITING · sponsor: **Shanghai Proton and Heavy Ion Center** · enrollment: 312 (estimated)

## Conditions studied

- Breast Cancer
- Proton Therapy

## Interventions

- **RADIATION:** moderate hypofractionated proton radiotherapy
- **RADIATION:** ultra-hypofractionated proton radiotherapy

## Key facts

- **NCT ID:** NCT07135661
- **Lead sponsor:** Shanghai Proton and Heavy Ion Center
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** RECRUITING
- **Start date:** 2024-10-10
- **Primary completion:** 2027-10-31
- **Final completion:** 2029-10-31
- **Target enrollment:** 312 (ESTIMATED)
- **Last updated:** 2025-08-22


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT07135661

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT07135661, "Ultra-Hypofractionated vs. Moderately Hypofractionated Proton Therapy for Early Breast Cancer After Lumpectomy". Retrieved via AI Analytics 2026-06-16 from https://api.ai-analytics.org/clinical/NCT07135661. Licensed CC0.

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