# Necessity of Post-mastectomy Radiotherapy After Neoadjuvant Chemotherapy and Mastectomy

> **NCT05993559** · PHASE3 · NOT_YET_RECRUITING · sponsor: **Gangnam Severance Hospital** · enrollment: 1314 (estimated)

## Conditions studied

- Breast Cancer

## Interventions

- **RADIATION:** Arm I (No PMRT)
- **RADIATION:** Arm II (PMRT)

## Key facts

- **NCT ID:** NCT05993559
- **Lead sponsor:** Gangnam Severance Hospital
- **Sponsor class:** OTHER
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** NOT_YET_RECRUITING
- **Start date:** 2024-11-11
- **Primary completion:** 2031-04-10
- **Final completion:** 2031-07-10
- **Target enrollment:** 1314 (ESTIMATED)
- **Last updated:** 2024-01-12


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT05993559

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT05993559, "Necessity of Post-mastectomy Radiotherapy After Neoadjuvant Chemotherapy and Mastectomy". Retrieved via AI Analytics 2026-05-28 from https://api.ai-analytics.org/clinical/NCT05993559. Licensed CC0.

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