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RecruitingNCT04185974CAREUpdated Mar 25, 2026

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

An interventional study of C12 re-irradiation and Photon re-irradiation in Locally Advanced Head-and-Neck Cancer, sponsored by University Hospital Heidelberg. Recruiting at 2 sites in Germany. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-03-25.

Sponsored by University Hospital Heidelberg · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Started Aug 2020; still recruiting 6 years 1 month later.
Phase
Not applicable
Study type
Interventional
Enrollment
72
Allocation
Randomized
Ages
18 Years and older
Sex
All
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Study summary

After multimodal therapy of head-and-neck tumors, patients often develop local recurrence, locally progressive disease or second primary tumors. In this highly pre-treated patient cohort, therapeutic options are limited. Patients that are not candidates for salvage surgery may benefit from re-irradiation. Despite recent technical advances, re-irradiation is associated with severe side effects. Carbon ion Re-Radiotherapy (reCIRT) has shown encouraging results in retrospective analyses with moderate toxicity.

In the current Phase-II CARE-trial, reCIRT and conventional photon re-irradiation in patients with recurrent or progressive locally advanced head-and-neck cancer will be assessed regarding toxicity/ safety, local progression-free survival, overall survival and quality-of-life.

Read the detailed description

The incidence of head-and-neck cancer worldwide amounts to around 550.000 cases per year, with male patients affected significantly more often. Common risk factors are smoking, alcohol, viral infections, immunodeficiency or genetic factors. Locally advanced head-and-neck tumors can lead to severe symptoms such as dysphagia, cachexia and tumor pain with a significant decrease of the quality-of-life. The prognosis depends on multiple factors such as TNM-staging, tumor volume, histology, general condition, age and smoking. Further risk factors are positive resection margins, extracapsular extension and perineural invasion. While metastatic spread significantly decreases overall survival, the life-limiting problem in patients with head-and-neck cancer is locally invasive and destructive tumor growth leading to a decrease of the performance status and quality of life. After multimodal therapy of locally advanced head-and-neck tumors, around 30 - 50% of patients will develop local recurrence or locally progressive disease and up to 8% of patients with HNSCC will develop a second primary tumor in the head-and-neck .

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Conditions studied

  • Locally Advanced Head-and-Neck Cancer
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In context

Lead sponsor

University Hospital Heidelberg is the lead sponsor of 175 studies on the registry; 48 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Locally recurrent / progressive head-and-neck cancer after initial radiation therapy
  • Microscopic or macroscopic tumor after salvage surgery
  • Indication for re-irradiation
  • Completed wound healing after surgical intervention
  • Karnofsky-Performance-Score ≥ 60
  • Age ≥ 18 years
  • Written informed consent (must be available before enrolment in the trial)
  • Ability of subject to understand character and individual consequences of the trial
  • For women with childbearing potential, (and men) adequate contraception
  • Submission of previous radiotherapy records

Exclusion criteria

Exclusion Criteria:

  • Re-irradiation of malignancy in the larynx
  • Diagnosed plasmocytoma, sarcoma or chordoma
  • Previous re-irradiation in-field
  • Time interval \< 6 months after initial radiotherapy
  • Distant metastases (except pulmonary metastases)
  • Patients who have not recovered from acute toxicities of prior therapies
  • Refusal of the patients to take part in the study
  • Pregnant or lactating women
  • Known carcinoma \<5 years ago (excluding Carcinoma in situ of the cervix, basal cell carcinoma, squamous cell carcinoma of the skin) requiring immediate treatment interfering with study therapy
  • Participation in another clinical study or observation period of competing trials, respectively
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Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
72 participants (estimated)

Study arms

  • Experimental
    C12 irradiation

    Evaluation of Safety and Toxicity of C12 ion reirradiation

    Radiation: C12 re-irradiation

  • Active comparator
    Photon irradiation

    Evaluation of Safety and Toxicity of photon re-irradiation

    Radiation: Photon re-irradiation

Interventions

  • RadiationC12 re-irradiation

    51 Gy(RBE) or 54 Gy

  • RadiationPhoton re-irradiation

    54 Gy(RBE) or 60 Gy

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What researchers measure

Primary outcomes

  1. safety of carbon ion re-irradiation

    the rate of patients with an acute/subacute toxicity CTCAE v5.0 ≥ grade 3

    Time frame: 6 month

  2. toxicity of carbon ion re-irradiation

    the rate of patients with an acute/subacute toxicity CTCAE v5.0 ≥ grade 3

    Time frame: 6 month

Secondary outcomes

  1. progression-free survival

    Local progression-free survival

    Time frame: 12 month

  2. Overall survival

    within 12 month after re-irradiation

    Time frame: 12 month

  3. Score on EORTC QLQ C30 Quality of life questionaire

    EORTC (European Organization for Research and. Treatment of Cancer) QLQ (quality of life questionnaire) C30, score 1-6, high score means worse outcome

    Time frame: within 12 month after re-irradiation

  4. Score on EORTC QLQ H&N35 Quality of life questionaire

    QLQ (quality of life questionnaire)-H\&N (Head and neck) 35, score 1-6, high score means worse outcome

    Time frame: within 12 month after re-irradiation

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Study locations

2 of 2 sites recruiting
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References and documents

Publications

  • Held T, Lang K, Regnery S, Weusthof K, Hommertgen A, Jakel C, Tonndorf-Martini E, Krisam J, Plinkert P, Zaoui K, Freudlsperger C, Moratin J, Krauss J, Harrabi SB, Herfarth K, Debus J, Adeberg S. Carbon ion reirradiation compared to intensity-modulated re-radiotherapy for recurrent head and neck cancer (CARE): a randomized controlled trial. Radiat Oncol. 2020 Aug 5;15(1):190. doi: 10.1186/s13014-020-01625-0. PubMed 32758267 ↗

Individual participant data

Plan to share: No

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 25, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT04185974
Lead sponsor
University Hospital Heidelberg
Responsible party
Juergen Debus (Head of department, University Hospital Heidelberg) — Principal investigator
First posted
Dec 4, 2019
Start date
Aug 25, 2020
Primary completion
Jul 30, 2030 (estimated)
Completion
Jan 30, 2031 (estimated)
Last update
Mar 25, 2026

Study contacts

Held Thomas, PD Dr.
Contact
thomas.held@med.uni-heidelberg.de
49 622156 ext. 8202
Cornelia Jäkel, Dr.
Contact
studienkoordination.rad@med.uni-heidelberg.de
49 622156 ext. 34091

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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