About this trial
This is a non-inferiority, multicenter, randomized phase 3 trial aimed at investigating the impact of individualized primary clinical target volume based on margin expansion on patients' prognosis and complications compared with the consensus primary clinical target volume based on margin expansion and stepwise extension pattern for patients with newly diagnosed non-metastatic nasopharyngeal carcinoma.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Age: 18 Years to 65 Years.
Eastern Cooperative Oncology Group performance status ≤1.
Patients with newly diagnosed, histologically confirmed nasopharyngeal carcinoma (non-keratinizing subtype).
Tumor staged as T1-4N0-3M0 (AJCC 9th).
Disqualifiers
Active tuberculosis: active tuberculosis within the past 1 year should be excluded regardless of treatment; a history of active tuberculosis > 1 year ago is exclusionary unless prior adequate anti-tuberculosis treatment is documented.
Active infection requiring systemic treatment.
Previous or concurrent with other malignant tumors, except for adequately treated non-melanoma skin cancer, cervical carcinoma in situ and thyroid papillary cancer.
History of radiotherapy, except for non-melanoma skin cancer located outside the target volume of radiotherapy for nasophayngeal carcinoma.
Trial design
Parallel
Treatments tested in this trial
Comprehensive Therapy Based on Tumor Stage
Procedure/Surgery1. T1N0: Radiotherapy Only. 2. T1N1, T2N0-1, T3N0: Radiotherapy with or without Concurrent Chemotherapy (Cisplatin). 3. T3N1, T4N0: Concurrent Chemoradiotherapy (Cisplatin) with or without Induction Chemotherapy (GP Regimen). 4. T1-4N2-3, T4N1: Induction Chemoimmunotherapy (GP Regimen + PD-1 Monoclonal Antibody) + Concurrent Chemoradiotherapy (Cisplatin) + Adjuvant Immunotherapy (PD-1 Monoclonal Antibody).
IMRT with Individualized Primary Clinical Target Volume Based on Margin Expansion
Radiation1. Target delineation: 1. CTVp\_High = GTVp + 0 mm 2. CTVp\_Mid = CTVp\_High + 5 mm 3. CTVp\_Low = CTVp\_Mid + 5 mm + whole nasopharynx 4. CTVn\_High = GTVn + 0 mm 5. CTVn\_Mid = CTVn\_High + 3-5 mm (for nodes with imaging-detected extranodal extension) or 0 mm (for nodes without imaging-detected extranodal extension) + equivocal nodes in the anticipated drainage levels, close proximity to enlarged nodes, or with suspicious PET results 6. CTVn\_Low = CTVn\_Mid + 3 mm + elective drainage levels 2. Dose prescription: 1. 6996 cGy/33 fx for CTVp\_High and CTVn\_High 2. 6006 cGy/33 fx for CTVp\_Mid and CTVn\_Mid 3. 5412 cGy/33 fx for CTVp\_Low and CTVn\_Low
IMRT with Consensus Primary Clinical Target Volume
Radiation1. Target delineation: 1. CTVp\_High = GTVp + 0 mm 2. CTVp\_Mid = CTVp\_High + 5 mm 3. CTVp\_Low = CTVp\_Mid + 5 mm + whole nasopharynx + high-risk structures based on stepwise local extension patterns of tumor spread 4. CTVn\_High = GTVn + 0 mm 5. CTVn\_Mid = CTVn\_High + 3-5 mm (for nodes with imaging-detected extranodal extension) or 0 mm (for nodes without imaging-detected extranodal extension) + equivocal nodes in the anticipated drainage levels, close proximity to enlarged nodes, or with suspicious PET results 6. CTVn\_Low = CTVn\_Mid + 3 mm + elective drainage levels 2. Dose prescription: 1. 6996 cGy/33 fx for CTVp\_High and CTVn\_High 2. 6006 cGy/33 fx for CTVp\_Mid and CTVn\_Mid 3. 5412 cGy/33 fx for CTVp\_Low and CTVn\_Low
Treatment groups
Trial outcomes
Primary outcomes
Local failure-free survival (LFFS)
Local failure-free survival is measured from the date of diagnosis until local recurrence.
Secondary outcomes
Overall survival (OS)
Overall survival is measured from the date of diagnosis until death from any cause.
Failure-free survival (FFS)
Failure-free survival is measured from the date of diagnosis until local recurrence, regional recurrence, distant failure, or death from any cause, whichever occurs first.
Distant failure-free survival (DFFS)
Distant failure-free survival is measured from the date of diagnosis until distant failure.
Locoregional failure-free survival (LRFFS)
Locoregional failure-free survival is measured from the date of diagnosis until local or regional recurrence.
Sponsors and contacts
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