# Breast Cancer Study of Preoperative Pembrolizumab + Radiation

> **NCT03366844** · PHASE1,PHASE2 · ACTIVE_NOT_RECRUITING · sponsor: **Stephen Shiao** · enrollment: 66 (actual)

## Conditions studied

- Breast Cancer

## Interventions

- **DRUG:** Pembrolizumab
- **RADIATION:** RT Boost

## Key facts

- **NCT ID:** NCT03366844
- **Lead sponsor:** Stephen Shiao
- **Sponsor class:** OTHER
- **Phase:** PHASE1,PHASE2
- **Study type:** INTERVENTIONAL
- **Status:** ACTIVE_NOT_RECRUITING
- **Start date:** 2017-12-22
- **Primary completion:** 2025-02-06
- **Final completion:** 2030-12-07
- **Target enrollment:** 66 (ACTUAL)
- **Last updated:** 2026-04-20

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03366844

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03366844, "Breast Cancer Study of Preoperative Pembrolizumab + Radiation". Retrieved via AI Analytics 2026-05-26 from https://api.ai-analytics.org/clinical/NCT03366844. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*