Stereotactic Boost and Short-course Radiation Therapy for Oropharynx Cancer
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: SABR boost and de-escalated chemoradiation, Standard chemoradiation.
- Who it may be relevant to
- Registry conditions: Head and Neck Cancer, Oropharynx Cancer, Human Papilloma Virus. Basic parameters: from 18 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Canada
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
Stereotactic Boost and SHOrt-course Radiation Therapy for HPV-associated OroPharynx Cancer Trial: A Randomized Multicentric Phase III Trial
Overview
This is a randomized clinical trial comparing the outcomes of short-course chemoradiation consisting in stereotactic boost to the gross tumor and de-esclalated chemoradiation to the elective neck in human papilloma associated oropharynx cancer vs. the current standard 7-week course chemoradiation.
Detailed description
Concurrent platinum-based chemoradiation remains the standard of care in locally advanced head and neck cancer. The current standard radiation regimen consists in a 7-week course of conventionally fractionated radiotherapy to the gross tumor volume (GTV), along with bilateral prophylactic neck irradiation to an elective dose of \~ 50 Gy in 2 Gy per fraction. In addition to being cumbersome, the current protracted daily radiation course is associated with high rates of acute and late toxicities and significant deterioration of patients' quality of life. In the light of the remarkably improved prognosis of the distinct subgroup of HPV-OPC, there is growing interest for treatment de-intensification strategies in contemporaneous OPC cohorts.
Stereotactic ablative radiotherapy (SABR) allows for ultra-precise delivery of ablative radiation dose over a small number of fractions, by combining sharp dose gradients with use of optimal image guidance. The increased conformity and reduced margins used in SABR can substantially reduce the dose to surrounding organs at risk and could therefore reduce toxicity. In addition, previous work has shown that an elective dose of 40 Gy in 2 Gy per fraction, in conjunction with chemotherapy, is sufficient for microscopic sterilisation of cancer cells and can translate into a reduction of toxicities.
The goal of this trial is to compare the efficacy and safety of short-course chemoradiation consisting in stereotactic boost to the gross tumor of 14 Gy in 2 fractions followed by de-esclalated chemoradiation (40 Gy in 20 fractions and concurrent 2 cycles of Cisplatin 100mg/m2) in human papilloma associated oropharynx cancer vs. the current standard 7-week course chemoradiation (70 Gy in 33 fractions with 2-3 cycles of Cisplatin 100mg/m2).
This is an open label randomized phase III non inferiority trial. Patients will be randomized using a 1:1 ratio between the standard and the experimental arm and will be stratified by tumor stage and use of concurrent chemotherapy.
Interventions
- Radiation SABR boost and de-escalated chemoradiation
Stereotactic body radiotherapy boost to the gross tumor volume to a dose of 14 Gy in 2 fractions, followed by cisplatin-based chemoradiation to a dose of 40 Gy in 20 fractions - Radiation Standard chemoradiation
Standard Cisplatin-based chemoradiation to a dose of 70 Gy in 33 fractions
Primary outcome measures
- Progression free survival [Time frame: 2 years after the end of chemoradiation]
Secondary outcome measures (8)
- Subacute toxicity [Time frame: Between 2 and 6 months after the end of chemoradiation]
- Acute toxicity [Time frame: Less than 2 months after the end of chemoradiation]
- Late toxicity [Time frame: Between 6 months and 5-years after the end of chemoradiation]
- OS [Time frame: At 2- and 5-years after the end of chemoradiation]
- locoregional control [Time frame: At 2- and 5-years after the end of chemoradiation]
- Head and neck symptom burden [Time frame: At baseline, and 1-, 3-, 6-, 12- months post-treatment, and yearly from years 2-5 after the end of chemoradiation]
- Dysphagia [Time frame: At baseline, and 1-, 3-, 6-, 12- months post-treatment, and yearly from years 2-5 after the end of chemoradiation]
- Time from treatment start to return to work [Time frame: Measured in days and reported at 2-years post-treatment]
Eligibility criteria
Inclusion criteria
- Age ≥18 years
- Ability to provide written informed consent.
- Eastern Cooperative Oncology Group (ECOG) performance status 0-2.
- Biopsy proven diagnosis of squamous cell carcinoma of the oropharynx.
- Positive for HPV by p16 immunohistochemistry (IHC) or HPV in-situ hybridization (ISH)
- Clinical stage T1-3, N1 M0 (Stage I-II) as per AJCC 8th edition.
- Primary tumor < 30 cc
- Planned for curative chemoradiation
- For females of child-bearing age, a negative pregnancy test
Exclusion criteria
- Clinical N3 classification, as per AJCC 8th edition
- Clinically overt extranodal extension (ENE). As per AJCC 8th edition, clinically overt ENE is defined as invasion of the skin, infiltration of musculature/fixation to adjacent structures on clinical examination, cranial nerve, brachial plexus, sympathetic trunk or phrenic nerve invasion with dysfunction).
- Previous irradiation of the head and neck region
- Previous surgery of the HNC region (except for incisional or excisional biopsies)
- Pregnancy or breastfeeding
- Connective tissue disease
- Any medical condition that could, in the opinion of the investigator, prevent follow-up after radiotherapy.
- Non-Cisplatin concurrent chemotherapy
- Prior induction chemotherapy
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Allocation
- Randomized
- Model
- Parallel assignment
- Masking
- Open label
- Primary purpose
- Treatment
Study locations
Canada · 2 centers
- London Health Sciences Center — London
- Centre Hospitalier de l'Université de Montréal — Montreal
Publications
- Giguere P, Bahig H, Westra S, Roberge D, Bourque JM, Masucci GL, Nkurunziza ES, Freire V, Belliveau C, Duplan D, Vigneault E, Wong P, Lang P, Menard C. Platform for the Evaluation of innovations in Radiation oncology through registry-based conduct of multi-centric pragmatic randomized trials: PERa implementation. Trials. 2026 Apr 24;27(1):437. doi: 10.1186/s13063-026-09709-0. PMID 42032732
Identifiers
NCT: NCT04178174 · SHORT-OPC