Reducing radiation volume in oropharyngeal cancer treatment

Personalized Volume-deescalated Elective Nodal Irradiation in Oropharyngeal Head and Neck

Phase 2 Interventional University of Zurich · NCT06563362

This study is testing a personalized way to reduce radiation for people with oropharyngeal cancer to see if it can lower side effects while still being effective.

Quick facts

PhasePhase 2
Study typeInterventional
Enrollment120 (estimated)
Ages18 Years and up
SexAll
SponsorUniversity of Zurich Academic / other
Drugs / interventionschemotherapy, radiation
Locations5 sites (Zurich, Canton of Zurich and 4 other locations)
Trial IDNCT06563362 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates a personalized approach to reduce the volume of elective nodal irradiation in patients with oropharyngeal squamous cell carcinoma. By utilizing a multicentric dataset, the study aims to tailor the radiation treatment based on individual patient characteristics and disease progression, potentially minimizing the risk of toxicity associated with standard treatment. The feasibility of this de-escalation strategy will be assessed by monitoring the occurrence of out-of-field recurrences. The study includes patients who are newly diagnosed and planned for definitive (chemo) radiotherapy.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older with newly diagnosed squamous cell carcinoma of the oropharynx who are scheduled for definitive radiotherapy.

Not a fit: Patients with pre-treatment or those with advanced disease stages may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could lead to reduced treatment-related toxicity for patients with oropharyngeal cancer.

How similar studies have performed: Previous studies have explored de-escalation strategies in cancer treatment, indicating potential for success, though this specific approach is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients with a newly diagnosed (no pre-treatment) squamous cell carcinoma of the oropharynx (i.e. tonsils, base of tongue, oropharyngeal walls, oropharyngeal surface of epiglottis; ICD-10 codes C01, C09, C10), T1-4, N0-3.
* Treatment with definitive (chemo) radiotherapy planned, with elective irradiation of the lymph nodes.
* Age ≥ 18 years, no upper age limit.
* ECOG performance score \< 3.
* History/physical examination within 30 days prior to study inclusion by head and neck surgeon and/or radiation oncologist.
* FDG-PET scan prior to study inclusion. In case of inability to perform or contra-indication, at least contrast enhanced MRI scan obligatory.
* Participants need to provide informed consent.

Exclusion Criteria:

Inclusion Criteria:

* Patients with a newly diagnosed (no pre-treatment) squamous cell carcinoma of the oropharynx (i.e. tonsils, base of tongue, oropharyngeal walls, oropharyngeal surface of epiglottis; ICD-10 codes C01, C09, C10), T1-4, N0-3.
* Treatment with definitive (chemo) radiotherapy planned, with elective irradiation of the lymph nodes.
* Age ≥ 18 years, no upper age limit.
* ECOG performance score \< 3.
* History/physical examination within 30 days prior to study inclusion by head and neck surgeon and/or radiation oncologist.
* FDG-PET scan prior to study inclusion. In case of inability to perform or contra-indication, at least contrast enhanced MRI scan obligatory.
* Participants need to provide informed consent.

Exclusion Criteria:

* Multilevel primary tumors extending unambiguously beyond the oropharynx into the oral cavity, naso- or hypopharynx
* Distant metastases detected.
* Previous surgery, chemotherapy or radiotherapy treatment for other head and neck cancers.
* Previous surgery in head and neck region affecting the cervical lymphatic system. Dissection of singular lymph nodes for diagnostic purposes before treatment start is allowed.
* Synchronous or previous malignancies. Exceptions are curatively treated basal cell carcinoma or SCC of the skin, or in situ carcinoma of the cervix uteri, low- or intermediate- risk prostate cancer or breast with a progression-free follow-up time of at least 3 years without any remaining disease burden, or other previous malignancy with a progression-free interval of at least 5 years without any remaining active/progressive disease burden regardless whether the treatment is completed or ongoing as a maintenance treatment (e.g. androgen deprivation therapy for prostate cancer).
* Pregnancy or breast feeding
* Any severe mental or psychic disorder affecting decision making and ability to provide informed consent.

Where this trial is running

Zurich, Canton of Zurich and 4 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Oropharynx Cancerhead and neck cancerradiotherapyelective CTVclinical target volumede-escalation
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.