Transoral Surgical Resection Followed by De-escalated Adjuvant IMRT in Resectable p16+ Locally Advanced Oropharynx Cancer
Oropharynx Cancer
About this trial
This is an interventional treatment trial for Oropharynx Cancer focused on measuring Papillomavirus Infections, Carcinoma, Squamous Cell, Oropharyngeal Neoplasms, Papilloma, Neoplasms, Glandular and Epithelial, Pharyngeal Neoplasms, Otorhinolaryngologic Neoplasms, Head and Neck Neoplasms, Pharyngeal Diseases, Stomatognathic Diseases, Otorhinolaryngologic Diseases, DNA Virus Infections, Tumor Virus Infections, Antineoplastic Agents, Intensity Modulated Radiotherapy, Carboplatin, Cisplatin, Transoral Surgery
Eligibility Criteria
Inclusion Criteria:
- ECOG performance status of 0 or 1 or Karnofsky score 80-100.
- Newly diagnosed, histologically or cytologically confirmed SCC or undifferentiated carcinoma of the oropharynx and resectable oropharyngeal disease.
- American Joint Committee on Cancer (AJCC, 7th edition (used as a direct comparison to ECOG 3311)) TNM tumor stage III, IV a, or IV b (with no evidence of distant metastases) as determined by imaging studies (performed ≤ 30 days before surgery) and complete neck exam, from the skull base to the clavicles.
- Biopsy-proven p16+ oropharynx cancer; the histologic evidence of invasive squamous cell carcinoma may have been obtained from the primary tumor or metastatic lymph node.
- Carcinoma of the oropharynx associated with HPV as determined by p16 protein expression using immunohistochemistry (IHC) performed by a CLIA approved laboratory.
- No prior radiation above the clavicles.
- Patients with a history of a curatively treated malignancy must be disease-free for at least two years except for carcinoma in situ of cervix, melanoma in-situ (if fully resected), and/or non-melanomatous skin cancer.
- Patients with congestive heart failure > NYHA Class II, CVA/TIA, unstable angina, or myocardial infarction within the last 6 months prior to registration must be evaluated by a cardiologist and/or neurologist.
- Acceptable renal and hepatic function within 4 weeks prior to registration as predefined.
Exclusion Criteria:
- No evidence of extensive or "matted/fixed" pathologic adenopathy on preoperative imaging.
- Women must not be pregnant or breast-feeding due to the teratogenicity of chemotherapy.
- No intercurrent illness likely to interfere with protocol therapy or prevent surgical resection.
- No uncontrolled diabetes, infection despite antibiotics, or hypertension within 30 days prior to registration.
Sites / Locations
- UPMC Hillman Cancer CenterRecruiting
Arms of the Study
Arm 1
Arm 2
Arm 3
Experimental
Experimental
Experimental
Arm S (Low Risk)
Arm RT (Intermediate Risk)
Arm CRT (High Risk)
Low risk patients are defined as T1-T2 AND 0 or 1 metastatic lymph nodes AND <3 cm AND clear (≥3mm) margins AND no extracapsular extension (ECE) AND no perineural invasion AND no lymphovascular invasion. Patients will undergo transoral surgical resection of the oropharyngeal tumor.
Intermediate risk patients are defined as having any of the following features: One or more close (<3mm) margins, OR "minimal" ≤1 mm ECE OR 1 or more metastatic lymph nodes >3 cm in diameter OR 2-4 lymph nodes positive (≤ 6 cm in diameter), OR perineural invasion OR lymphovascular invasion Patients will undergo transoral surgical resection of the oropharyngeal tumor. Following surgery, patients will receive low-dose IMRT five times a week for 3 weeks.
High risk patients are defined as having any of the following features: One or more positive margins OR >1 mm ECE OR ≥ 5 metastatic lymph nodes. Patients will undergo transoral surgical resection of the oropharyngeal tumor. Following surgery, patients will receive low-dose IMRT six times a week and a weekly chemotherapy infusion (cisplatin or carboplatin) during radiation therapy. Patients will receive 2 Gy/fraction, 6 fractions per week with at least a 6-hour interfraction interval between each treatment: PTV-P50 or PTV-N50: 50 Gy in 25 fractions (2 Gy/fx) PTV-N45: 45 Gy in 25 fractions (1.8 Gy/fx) with simultaneous integrated boost to the PTV-P50 volume. PTV-P30 or PTV-N30: 30 Gy in 15 fractions (2 Gy/fx)