# Cardiotoxicity in Breast Cancer Patients Treated With Proton or Photon Radiotherapy: A RadComp Companion Study

> **NCT04361240** · — · COMPLETED · sponsor: **Abramson Cancer Center at Penn Medicine** · enrollment: 172 (actual)

## Conditions studied

- Breast Cancer
- Cardiotoxicity

## Interventions

- **RADIATION:** Proton vs Photon Radiation

## Key facts

- **NCT ID:** NCT04361240
- **Lead sponsor:** Abramson Cancer Center at Penn Medicine
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2020-08-01
- **Primary completion:** 2025-05-29
- **Final completion:** 2025-05-29
- **Target enrollment:** 172 (ACTUAL)
- **Last updated:** 2026-02-09

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04361240

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04361240, "Cardiotoxicity in Breast Cancer Patients Treated With Proton or Photon Radiotherapy: A RadComp Companion Study". Retrieved via AI Analytics 2026-06-24 from https://api.ai-analytics.org/clinical/NCT04361240. Licensed CC0.

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