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Optimization of Cervical Nodal CTV for Early and Medium Stage NPC

Nasopharyngeal Carcinoma Clinical Trial

Official title:
Optimization of Cervical Nodal Clinical Tumor Volume for Early and Medium Stage Nasopharyngeal Carcinoma: a Multicenter Non-inferior Randomized Controlled Phase III Clinical Trial

Clinical Trial Summary

Current radiotherapy guidelines and consensus statements uniformly recommend elective region irradiation (ERI) as the standard strategy for nasopharyngeal carcinoma (NPC). However, given the scarcity of skip-metastasis, the improved assessment accuracy of nodal involvement, and the striking advancements in chemotherapy for NPC, a one-fits-all delineation scheme for clinical target volumes for the nodal region (CTVn) may not be appropriate anymore, and modifications of the CTVn delineation strategy may be warranted. Involved site irradiation (ISI) covering merely the initially involved nodal site and potential extranodal extension has been confirmed to be as effective as ERI with decreased radiation-related toxicities in some malignancies, but has not yet been investigated in NPC. This study aims to compare the regional control, survival outcomes, radiation-related toxicities, and quality of life (QoL) of ISI with conventional ERI in NPC patients with a limited nodal burden.

Clinical Trial Description

ISRT-NPC is a prospective, multicenter, open-label, noninferiority, phase III randomized controlled trial. A total of 488 patients will be randomly assigned in a 1:1 ratio to receive ISI or ERI. Randomization will be stratified by institution and N stage. Generally, in the ISI group, the high-risk CTV1 (dose: 60 Gy) includes a 1-cm expansion of the positive LN as well as the VIIa and the retrostyloid space above the bilateral transverse process of the atlantoaxial spine (C1), regardless of N status. The low-risk CTV2 (Dose: 50 Gy) covers the cervical nodal region with a 3-cm caudal expansion below the transverse process of C1 for N0 disease and a 3-cm expansion below the positive LN for positive LNs (at least covering the level II). ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT05145660
Study type Interventional
Source Chinese Academy of Medical Sciences
Contact Junlin Yi, doctor
Phone 13661217998
Email yijunlin1969@163.com
Status Recruiting
Phase Phase 3
Start date September 1, 2022
Completion date August 31, 2027
View Details
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