Evaluating a Decreased Dose of Radiation Therapy to the Elective Neck for the Treatment of HPV-Related Oropharyngeal Cancer, ENLIGHT Trial

Inclusion Criteria

• Patients must have a histologically confirmed HPV-related OPSCC, confirmed by HPV in-situ hybridization
• Patients must not have received prior treatment (i.e., no induction chemotherapy)
• Patients must have evaluable disease (per Response Evaluation Criteria in Solid Tumors [RECIST] version [v]1.1 response criteria)
• Patients must be age >= 18 years
• Patients must have American Joint Committee on Cancer (AJCC) 8th edition stage I-II disease, as defined by a T-classification of T1-3, and N-classification of N1-2, without metastases (M0), as defined by physical examination (including nasopharyngolaryngoscopy) and positron emission tomography (PET)
• Patient must receive a staging PET scan prior to registration on study
• Patients must exhibit an Eastern Cooperative Oncology Group (ECOG) performance status of 0-1
• Patients may be planned to undergo radiation therapy (RT) alone or RT with concurrent chemotherapy, with chemotherapy managed at the discretion of the treating medical oncologist per standard of care
• RT is known to be teratogenic to a developing human fetus. For this reason, patients of child-bearing potential (POCBP) must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) from time of informed consent, for the duration of study participation (while actively receiving RT). Should a patient become pregnant or suspect she is pregnant while she or her partner is participating in this study, she should inform her treating physician immediately. * NOTE: A POCBP is any patient (regardless of sexual orientation, having undergone a tubal ligation, or remaining celibate by choice) who meets the following criteria: ** Has not undergone a hysterectomy or bilateral oophorectomy ** Has had menses at any time in the preceding 12 consecutive months (and therefore has not been naturally postmenopausal for > 12 months)
• POCBP must have a negative pregnancy test prior to CT simulation or sign the Department of Radiation Oncology’s pregnancy testing declination form * Note: the timing of the pregnancy test/declination form will follow the policy of the Department of Radiology and Oncology, which requires completion of pregnancy testing or signed pregnancy declination prior to CT simulation
• Patients must have the ability to understand and the willingness to sign a written informed consent document prior to registration

Exclusion Criteria

• Patients with cT4, cN3, or cM1 disease by AJCC 8th edition
• Patients who have had prior RT to the head/neck region that would result in overlap of RT fields
• Patients who have had prior major surgery to the head/neck region that could disrupt lymphatic flow
• Patients who have an uncontrolled intercurrent illness that would interfere with the receipt of RT including, but not limited to any of the following, are not eligible: * Uncontrolled connective tissue disorders (e.g. lupus, scleroderma) given potential for this to interfere with RT * Psychiatric illness/social situations that would limit compliance with study requirements * Any other illness or condition that the treating investigator feels would interfere with study compliance or would compromise the patient’s safety or study endpoints