# Carbon Ion Re-Radiotherapy in Patients With Recurrent or Progressive Locally Advanced Head-and-Neck Cancer

> **NCT04185974** · NA · RECRUITING · sponsor: **University Hospital Heidelberg** · enrollment: 72 (estimated)

## Conditions studied

- Locally Advanced Head-and-Neck Cancer

## Interventions

- **RADIATION:** C12 re-irradiation
- **RADIATION:** Photon re-irradiation

## Key facts

- **NCT ID:** NCT04185974
- **Lead sponsor:** University Hospital Heidelberg
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** RECRUITING
- **Start date:** 2020-08-25
- **Primary completion:** 2030-07-30
- **Final completion:** 2031-01-30
- **Target enrollment:** 72 (ESTIMATED)
- **Last updated:** 2026-03-25


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04185974

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04185974, "Carbon Ion Re-Radiotherapy in Patients With Recurrent or Progressive Locally Advanced Head-and-Neck Cancer". Retrieved via AI Analytics 2026-07-23 from https://api.ai-analytics.org/clinical/NCT04185974. Licensed CC0.

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