Reducing radiation therapy for HPV-positive head and neck cancer

De-escalation of Adjuvant Radio (Chemo) Therapy for HPV-positive Head and Neck Squamous Cell Carcinomas: A Phase I Study to Reduce Late Toxicity

Not applicable Interventional Technische Universität Dresden · NCT03396718

This study is testing if giving less radiation after surgery helps people with HPV-positive head and neck cancer avoid side effects while still keeping the cancer under control.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment304 (estimated)
Ages18 Years and up
SexAll
SponsorTechnische Universität Dresden Academic / other
Drugs / interventionschemotherapy, radiation
Locations10 sites (Tübingen, Baden-Wurttemberg and 9 other locations)
Trial IDNCT03396718 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates the safety and efficacy of reducing the dose of postoperative radiotherapy or radiochemotherapy in patients with HPV-positive squamous cell carcinoma of the oropharynx and larynx. Patients will be categorized based on their HPV status and risk factors, with HPV-positive patients receiving a lower radiation dose compared to standard treatment. The study aims to determine if this de-escalation can minimize therapy-related side effects while maintaining effective cancer control. The trial will monitor outcomes and safety over a two-year follow-up period.

Who should consider this trial

Good fit: Ideal candidates are patients with HPV-positive squamous cell carcinoma of the oropharynx or larynx who have undergone surgical removal of their tumors.

Not a fit: Patients with HPV-negative tumors or those not requiring adjuvant therapy will not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could lead to fewer side effects for patients while still effectively treating their cancer.

How similar studies have performed: Other studies have shown promising results with de-escalation strategies in HPV-positive cancers, suggesting potential for success in this approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Condition after surgical removal of a squamous cell carcinoma of the oropharynx and adequate lymph node dissection
* Indication for adjuvant radiotherapy or radiochemotherapy in the interdisciplinary tumor board
* Good general state (ECOG performance status 0 or 1)
* Adequate compliance to ensure closely follow-up
* Patient's consent and written consent
* Neck dissection of at least the tumor bearing side

Additional Inclusion Criteria Arm intermediate risk (at least one of the criteria must be fulfilled):

* pT3 and R0 and / or
* histologically confirmed involvement of lymph nodes (n = 1-3) and no extracapsular extension of the lymph node metastasis

Additional Inclusion Criteria Arm high risk (at least one of the criteria must be fulfilled):

* residual tumor (R1 status) and / or
* pathologic stage T4 (pT4) status and / or
* more than 3 infected lymph nodes and / or
* extracapsular extension of at least one lymph node metastasis

Exclusion Criteria:

* Patients with a cumulative nicotine abuse \> 30 packyears. These patients are not included in the intervention arms, but are always included in the observation arms (regardless of HPV status).
* radiologically presumed or histologically confirmed distant metastasis
* R2 resection or macroscopically visible residual tumor after surgery
* no neck dissection
* interval between last operation and planned irradiation start \> 7 weeks
* contraindication against a guideline-appropriate adjuvant radiation or radiochemotherapy according to the clinical risk constellation
* tumor disease in the last five years before the beginning of the study (except basaliomas of the skin, in-situ carcinoma of the cervix uteri or breast, or tumors with similar prognosis which are considered to be very likely to be cured)
* malignant tumor disease in the head and neck region, regardless of interval and prognosis
* Pre-irradiation with risk of dose overlap
* participation in another clinical trial if further experimental therapy is necessary or the treatments/ protocols are mutually exclusive (e.g. altered chemotherapy, additional consolidation chemotherapy). Allowed is the additional participation in observation studies or supportive therapy studies.
* diseases or conditions which do not allow the person concerned to assess the nature and scope and possible consequences of the clinical trial
* pregnant or lactating women
* evidence that the participant is not expected to comply with the study protocol (e.g. lack of cooperation)
* missing written consent

Where this trial is running

Tübingen, Baden-Wurttemberg and 9 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 Head-and-neck Squamous Cell CarcinomaHead and neck cancerOropharyngeal cancerpostoperativeradiotherapyradiochemotherapyde-intensificationHPV
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.