Early Closure of a Phase 1 Clinical Trial for SABR in Early-Stage Glottic Cancer
Abstract
PURPOSE
The early results of a phase 1 study of stereotactic ablative radiation therapy for early-stage glottis cancer were previously reported. However, additional late adverse events occurred in the second arm during the follow-up period. In this study, the dose-limiting toxicities and premature closure of the clinical trial are reported.
METHODS AND MATERIALS
Thirteen patients with cT1-2N0M0 squamous cell carcinoma of the glottis were enrolled between May 2015 and July 2018. Seven patients in the first arm received 59.5 Gy to the gross tumor volume and 47.6 Gy to the remaining larynx, delivered in 17 fractions. The second arm dose was 55 Gy and 40.7 Gy in 11 fractions to the gross tumor volume and the remaining larynx, respectively. Patients were treated according to the simultaneous integrated boost approach with volumetric modulated arc therapy.
RESULTS
The median follow-up was 37 months (range, 6-41.4) for the first arm and 14.5 months (range, 4.8-21.5) for the second arm. Maximum acute toxicity was grade 2 laryngeal mucositis for each arm. Maximum chronic toxicity was grade 3 laryngeal inflammation, occurring in 2 patients (33.3%) in the second arm. One patient underwent a laryngomicrosurgical biopsy for a vocal cord ulcer, and another patient underwent supraglottic laryngectomy because of arytenoid cartilage necrosis. In the first arm, chronic toxicity was not observed, except for grade 1 laryngeal edema in 1 patient.
CONCLUSIONS
The phase 1 dose escalation study was…
Read the paper
Related studies
- Preliminary Toxicity Analysis of 3DCRT versus IMRT on the High Dose Arm of the RTOG 0126 Prostate Cancer Trial
- Adaptive Radiotherapy for Head and Neck Cancer: Initial Clinical Outcomes from a Prospective Trial
- American Association of Physicists in Medicine Task Group 263: Standardizing Nomenclatures in Radiation Oncology
- Motion Management Strategies and Technical Issues Associated with Stereotactic Body Radiotherapy of Thoracic and Upper Abdominal Tumors: A Review from NRG Oncology
- High-dose-rate interstitial brachytherapy as a monotherapy for localized prostate cancer: treatment description and preliminary results of a phase I/II clinical trial
- Highly efficient training, refinement, and validation of a knowledge-based plan quality control system for radiotherapy clinical trials
Go deeper in Evidence Hub
Evidence Hub adds a study data sheet (design, sample size, evidence level, key numbers), an AI summary and a chat grounded in the paper's text.