Study of De_Intensified Postoperative Radiation Therapy for HPV Associated Oropharyngeal Squamous Cell Carcinoma
Head and Neck Cancer
About this trial
This is an interventional treatment trial for Head and Neck Cancer
Eligibility Criteria
Inclusion Criteria:
- Histologically or cytologically confirmed squamous cell carcinoma of the tonsil or base of tongue (oropharynx) or unknown primary with p16-positive cervical lymph node metastases
- HPV-associated tumor as defined by: positive p16 immunohistochemistry (>70%) OR in situ hybridization OR PCR-based methods
- Eligible for curative-intent surgery with anticipated negative margins
- Surgery performed at Brigham & Women's Hospital
- Age 18 or older years.
- ECOG performance status 0-1 (Karnofsky ≥70%, see Appendix A)
Normal organ and marrow function as defined below:
- leukocytes ≥3,000/mcL
- absolute neutrophil count ≥1,000/mcL
- platelets ≥100,000/mcL
- total bilirubin within normal institutional limits
- AST(SGOT)/ALT(SGPT) ≤2.5 × institutional upper limit of normal
- creatinine ≤ 1.5 times the institutional upper limit of normal OR
- creatinine clearance ≥60 mL/min/1.73 m2 for participants with creatinine levels above institutional normal.
- Patients with ≤20 pack-years of cumulative cigarette smoking. Pack-years are calculated by multiplying the number of years smoked with the pack of cigarettes smoked per day. One pack is considered to contain 20 cigarettes.
- Tumor clinical stage (AJCC 8th edition): T0 or T1 or T2
- Nodal clinical stage (AJCC 8th edition): N0 or N1
- No distant metastases. Clinical M-stage must be M0 (AJCC 8th edition).
- Ability to understand and the willingness to sign a written informed consent document.
Exclusion Criteria:
- Prior history of head and neck cancer within 5 years.
- Prior head and neck radiation
- Clinically fixed or matted nodes
- Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements. Note: that HIV positive patients will be eligible.
- Pregnant women are excluded from this study because of the teratogenic risks of radiation exposure to the developing fetus. Because there is an unknown but potential risk for adverse events in nursing infants secondary to treatment of the mother with radiation therapy and supportive care medications required for symptomatic management of head and neck cancer side effects as well as general anesthesia required for oncologic head and neck surgery, breastfeeding should be discontinued if the mother is enrolled in the study. Pregnancy status will be determined by a serum pregnancy test.
Sites / Locations
- Dana Farber Cancer InstituteRecruiting
Arms of the Study
Arm 1
Arm 2
Arm 3
Experimental
Experimental
Experimental
Low Risk
Intermediate Risk
High Risk
Observation without adjuvant therapy Pathologic T0-2, N0-1 Minimum of 15 lymph nodes retrieved on neck dissection per dissected side of the neck -≤2 positive lymph nodes confined to level II and/or level III No extranodal extension Clear margins
Reduced-dose radiation (46Gy) Pathologic T0-2N0-2 and any one of the following features: ->2 positive lymph nodes <15 lymph nodes retrieved on neck dissection for each side of the neck Positive lymph nodes in level IB, IV, or V -≤1mm extranodal extension Positive lymph node(s) contralateral to the primary tumor Close margins
Postoperative radiation (60Gy) without chemotherapy Pathologic T0-4N0-2 and any one of the following features: ->1mm extranodal extension Microscopic positive margins