Phase 2
N=67
INRT-AIR: A Prospective Phase II Study of Involved Nodal Radiation Therapy
Head and Neck Squamous Cell Carcinoma
Bottom Line
View on ClinicalTrials.gov: NCT03953976 ↗Enrolled (actual)
67
Serious AEs
17.9%
Results posted
Feb 2026
Primary outcome: Primary: Risk of Solitary Elective Volume Recurrence Following Elective Volume Reduction Using INRT — 11; 9; 3; 6 percentage of participants
Study Design & Population
- Study type
- Interventional
- Phase
- Phase 2
- Interventions
- Intensity modulated radiation therapy (IMRT) (Radiation)
- Age
- Adult, Older Adult · 18+ yrs
- Sex
- All
- Sponsor
- University of Texas Southwestern Medical Center
- Primary completion
- Nov 2022
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Risk of Solitary Elective Volume Recurrence Following Elective Volume Reduction Using INRT |
11; 9; 3; 6 | — |
| SECONDARY Comparison of SEVR Risks by Anatomic Site |
96; 79; 90; 63 | — |
| SECONDARY European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) Summary Score and Functional Subscales |
76.9; 80.7; 85.6; 84.5; 87.5; 92.7 | — |
| SECONDARY European Organization for Research and Treatment of Cancer Head and Neck 35-question Questionnaire (EORTC HN35) Symptom Subscales |
13.4; 49.7; 36.5; 32.7; 24.4; 11.4 | — |
| SECONDARY MD Anderson Dysphagia Inventory (MDADI) Global, Emotional, Functional and Physical Subscales |
83.1; 83.8; 90.6; 89.1; 92.6 | — |
| SECONDARY Skin Toxicity (Dermatitis) |
90; 10; 0 | — |
| SECONDARY Gastrostomy Placement |
14 | — |
| SECONDARY EQ-5D Quality of Life Overall Health Visual Analogue Scale (VAS) |
75.97; 75.15; 78.75; 84.07; 83.83; 89.87 | — |
| SECONDARY 2-year Overall and Progression-free Survival Following Treatment With INRT |
91; 82 | — |
| SECONDARY Time From the End of Treatment for Disease-free Patients to Have Their Gastrostomy Tubes Removed |
2.9 | — |
Summary
Elective nodal irradiation has been a longstanding standard-of-care in the management of mucosal squamous cell carcinoma of the head and neck. Recent studies have suggested that reduced elective dose and volume may be a viable approach to improve toxicity. In this study, we are eliminating the elective neck treatment, focusing therapy on involved and suspicious nodes.
Eligibility Criteria
Inclusion Criteria
- Pathologically-proven diagnosis of squamous cell carcinoma of the oropharynx, larynx, or hypopharynx. Squamous cell carcinoma of unknown primary is not allowed.
- Patients must have clinically or radiographically evident measureable disease at the primary site and/or nodal stations. Diagnostic lymph node excision (< 2 nodes) is also allowable.
- Patients may undergo a diagnostic or therapeutic transoral resection for a T1-2 tonsil or base of tongue cancer.
- Clinical stage I-IVB (AJCC, 7th edition); stages I-II glottic cancer are excluded
- Age ≥ 18 years.
- ECOG Performance Status 0-2
- Women of child-bearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry, for the duration of study participation, and for 90 days following completion of therapy. Should a woman become pregnant or suspect she is pregnant while participating in this study, she should inform her treating physician immediately.
7.1 A female of child-bearing potential is any woman (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; or
- Has not been naturally postmenopausal for at least 12 consecutive months (i.e., has had menses at any time in the preceding 12 consecutive months).
- Negative serum pregnancy test within 2 weeks before registration for women of childbearing potential.
- Neck CT and/or neck MRI, and PET-CT (at least skull-to-thigh).
- Ability to understand and the willingness to sign a written informed consent.
Exclusion Criteria
- Distant metastasis.
- Inability to undergo PET-CT.
- Stage I and II glottic carcinoma.
- Gross total excision of both the primary and nodal disease.
- Synchronous non-skin cancer primaries outside of the oropharynx, larynx, and hypopharynx except for low- and intermediate-risk prostate cancer and synchronous well-differentiated thyroid cancer; in the latter case, surgery may occur before or after treatment, provided all other eligibility criteria are met .
- Prior invasive malignancy with an expected disease-free interval of less than 3 years.
- Prior systemic chemotherapy for the study cancer; prior chemotherapy for a remote cancer is allowable
- Prior radiotherapy to the region of the study cancer that would result in overlap of radiation fields.
- Subjects may not be receiving any other investigational agents.
- History of allergic reactions attributed to compounds of similar chemical or biologic composition to the chemotherapy agents in this study (if necessary).
- 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, in the opinion of the investigator, would limit compliance with study requirements
- Subjects must not be pregnant or nursing due to the potential for congenital abnormalities and the potential of this regimen to harm nursing infants.
- History of severe immunosuppression, including HIV, and organ or autologous or allogeneic stem cell transplant.
Data sourced from ClinicalTrials.gov (NCT03953976). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.