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Role of Postoperative Radiotherapy in T1-T2N0M0 Glottic Carcinoma Involving the Anterior Commissure
Sponsor: Second Affiliated Hospital, Zhejiang University, School of Medicine
Summary
There remains no uniform treatment modality for glottic laryngeal carcinoma. Current clinical guidelines broadly recommend surgery or radiotherapy as single modality treatment for early stage glottic laryngeal carcinoma. Glottic carcinoma with anterior commissure invasion is linked to inferior local control; both definitive radiotherapy alone or transoral laser microsurgery (TLM) may confer a higher risk of local recurrence compared with other glottic carcinomas. We hypothesize that postoperative radiotherapy can act as an effective adjunct to surgery and reduce recurrence rates in patients with glottic carcinoma involving the anterior commissure. This study aims to conduct a multicenter, prospective, single arm phase II clinical trial of intensity modulated radiotherapy (IMRT) for postoperative patients with early stage glottic laryngeal carcinoma and anterior commissure involvement, to preliminarily evaluate the effect of IMRT on local control rates and long term survival outcomes in this patient population.
Official title: Role of Postoperative Radiotherapy in T1-T2N0M0 Glottic Carcinoma Involving the Anterior Commissure: A Prospective, Multicenter, Phase II Clinical Trial
Key Details
Gender
All
Age Range
18 Years - Any
Study Type
INTERVENTIONAL
Enrollment
38
Start Date
2026-09-16
Completion Date
2031-12-31
Last Updated
2026-08-24
Healthy Volunteers
No
Interventions
intensity modulated radiotherapy (IMRT)
Postoperative radiotherapy clinical target volume (CTV) design: The conventional postoperative laryngeal radiotherapy target is defined as CTV1, which encompasses the entire laryngeal structure, piriform sinus, gloss-epiglottic vallecula, paraglottic space, pre-epiglottic space, thyroid cartilage, and extends to the inferior border of the cricoid cartilage. For T2 tumours, CTV2 is delineated to include bilateral cervical lymph node regions II-III. PTV1 and PTV2 are defined as the regions expanded by 3 mm outward from CTV1 and CTV2, respectively. The prescribed dose for PTV1 is 60 Gy in 30 fractions (60 Gy/30F), and the prescribed dose for PTV2 is 54 Gy in 30 fractions (54 Gy/30F).
Locations (1)
Second Affiliated Hospital Of Zhejiang University School of Medicine
Hangzhou, Zhejiang, China