Squamous Cell Carcinoma of the Oropharynx
Conditions
Brief summary
Volume and Dose De-Intensified Radiotherapy for p16+ Squamous Cell Carcinoma of the Oropharynx: A Multi-Centre, Single Arm Prospective Cohort Study
Detailed description
De-intensified radiotherapy to a dose of 60 Gy to the primary tumour and involved lymph nodes and 54 Gy to subclinical regions at risk in 30 fractions. Omission of level IB lymph node regions from the elective nodal volumes. Chemotherapy will be administered as per standard of care, consisting of concurrent cisplatin (high-dose: 100mg/m2 IV every 3 weeks or low-dose: 40mg/m2 IV every week) or cetuximab (at the discretion of medical oncologist).
Interventions
RADIATIONDe-intensified chemoradiotherapy
Radiotherapy to a dose of 60 Gy to the primary tumour and involved lymph nodes and 54 Gy to subclinical regions at risk in 30 fractions. Reduced volume of elective nodal radiation.
Sponsors
Tom Baker Cancer Centre
Cross Cancer Institute
AHS Cancer Control Alberta
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Age 18 or older * Provide informed consent * ECOG performance status 0-2 * Histologically confirmed squamous cell carcinoma * p16-positive tumor, as determined by immunohistochemistry at local hospital * Primary tumor site in the oropharynx (includes tonsil, soft palate, base of tongue, walls of oropharynx) * Eligible for curative intent treatment. * Smokers and non-smokers are included * Tumor stage (AJCC 8th edition): T1 to T3 * Nodal stage (AJCC 8th edition): N1 to N2 * Adequate bone marrow function, hepatic, and renal function for chemotherapy (Hemoglobin \> 80 g/L; Absolute neutrophil count \>1.5x109 /L, platelets \> 100 x109/L; Bilirubin \< 35 umol/L; AST or ALT \< 3 x the upper limit of normal; serum creatinine \< 130 umol/L or creatinine clearance ≥ 50 ml/min)
Exclusion criteria
* \- Clinical, radiologic or pathologic Ib nodal involvement (including invasion into submandibular gland) * Primary cancer with extension and involvement of the oral cavity * Metastatic disease * Contraindications to radiotherapy or chemotherapy * Prior history of head and neck cancer within 5 years * Prior head and neck radiation at any time * Inability to attend full course of radiotherapy or follow-up visits * Pregnant or lactating women
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Xerostomia-related quality of life | 12 months | Measured by the Xerostomia Questionnaire (XQ), which is an 8 item self-reported xerostomia specific questionnaire. Patients rate each item on an 11 point ordinal Likert scale from 0 to 10, with higher scores indicating greater dryness or discomfort due to dryness. Item scores are added and the sum is transformed linearly to a final summary score ranging between 0 and 100, with higher scores representing greater levels of xerostomia. Based on existing literature, the mean XQ score for patients treated with standard dose and volume radiotherapy is estimated to be 52 (null hypothesis). To detect a clinically meaningful reduction of 11 points in patients treated with volume and dose de-intensified radiotherapy, with a resulting mean XQ score of 41 (alternative hypothesis), with an alpha of 0.05 and 80% power using a one-sided Wilcoxon test assuming normal distribution, 28 patients are required. Accounting for 10% dropout a total sample size of 32 patients is required. |
| Toxicity Criteria for Adverse Events | Baseline to 5 years | Measured by the Common Terminology Criteria for Adverse Events (CTCAE) v5.0 |
Other
| Measure | Time frame | Description |
|---|---|---|
| Local, regional, and distant failure rates | Baseline to 5 years | Time from treatment initiation to local, regional, and distant failure |
| Swallowing function | 12 months | Measured by fibre-optic endoscopic evaluation of swallowing (FEES) or modified barium swallow (MBS) |
| Overall survival | Baseline to 5 years | Time from treatment initiation to death from any cause |
| #2 Quality of life | Baseline to 5 years | Measured by the MD Anderson Symptom Inventory - Head & Neck (MDASI-HN); a questionnaire used to assess the severity of head and neck cancer-related symptoms and their impact on six daily activities (general activity, mood, work, relations with others, walking, and enjoyment of life). Severity of symptoms are assessed on a 0-10 numerical scale, with 0 being not present and 10 being as bad as you can imagine. The ratings can be averaged into several subscale scores: mean core symptom severity (13 core symptom items), mean module symptom severity (additional module symptom items if using a module), mean total symptom severity (13 core symptom items plus additional module symptom items if using a module), and mean interference (6 interference items only). The interference with daily activities is rated on a 0-10 numerical scale, 0 being did not interfere and 10 being interfered completely. The mean of the interference items can be used to represent overall symptom distress. |
| #3 Quality of life | Baseline to 5 years | Measured by the MD Anderson Dysphagia Inventory (MDADI), which is a 20 item self-administered questionnaire designed for evaluating the impact of dysphagia on the QOL of patients with head and neck cancer. Five responses (strongly agree, agree, no opinion, disagree, and strongly disagree) are available to each question and are scored on a scale of 1 to 5. The MDADI quantifies an individual's global (G), physical (P), emotional (E), and functional (F) perceptions of their swallowing ability. Two summary scores can be obtained: 1) global and 2) composite. The global scale is a single question, which is scored individually to assess the overall impact that swallowing abilities have on QOL. The composite MDADI score summarizes overall performance on remaining 19 items of the MDADI, as a weighted average of the P, E, and F subscales. MDADI scores are normalized to range from 20 (extremely low functioning) to 100 (high functioning). |
| #1 Quality of life | Baseline to 5 years | The primary study endpoint is the Xerostomia Questionnaire (XQ), an 8 item self-reported xerostomia specific questionnaire. Patients rate each item on an 11 point ordinal Likert scale from 0 to 10, with higher scores indicating greater dryness or discomfort due to dryness. Item scores are added and the sum is transformed linearly to a final summary score ranging between 0 and 100, with higher scores representing greater levels of xerostomia. |
| Progression-free survival | Baseline to 5 years | Time from treatment initiation to disease progression or death from any cause |
Countries
Canada
Contacts
Primary ContactHarvey Quon, MD
Backup ContactKelsey Meyer
Outcome results
None listed