Optimizing Radiation Therapy Quality Assurance in Clinical Trials: A TROG 08.03 RAVES Substudy

被引:10
|
作者
Trada, Yuvnik [1 ]
Kneebone, Andrew [2 ]
Paneghel, Andrea [3 ]
Pearse, Maria [4 ]
Sidhom, Mark [5 ]
Tang, Colin [6 ]
Wiltshire, Kirsty [3 ]
Haworth, Annette [3 ]
Fraser-Browne, Carol [4 ]
Martin, Jarad [1 ]
机构
[1] Calvary Mater Newcastle, Waratah, NSW, Australia
[2] Royal N Shore Hosp, St Lenoards, NSW, Australia
[3] Peter MacCallum Canc Ctr, Melbourne, Vic, Australia
[4] Auckland Hosp, Auckland, New Zealand
[5] Liverpool Hosp, Liverpool, NSW, Australia
[6] Sir Charles Gairdner Hosp, Nedlands, WA 6009, Australia
关键词
ONCOLOGY GROUP; NECK-CANCER; RANDOMIZED-TRIAL; PROSTATE-CANCER; RADIOTHERAPY; IMPACT; DEVIATIONS; OUTCOMES; HEAD; SURVIVAL;
D O I
10.1016/j.ijrobp.2015.08.029
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Purpose: To explore site-and clinician-level factors associated with protocol violations requiring real-time-review (RTR) resubmission in a multicenter clinical trial to help tailor future quality assurance (QA) protocols. Methods and Materials: RAVES (Radiation Therapy-Adjuvant vs Early Salvage) (Trans-Tasman Radiation Oncology Group 08.03) is a randomized trial comparing adjuvant with early salvage radiation therapy in men with positive surgical margins or pT3 disease after prostatectomy. Quality assurance in RAVES required each clinician and site to submit a credentialing dummy run (DR) and for each patient's radiation therapy plan to undergo external RTR before treatment. Prospectively defined major violations from trial protocol required remedy and resubmission. Site and clinician factors associated with RTR resubmission were examined using hierarchical modeling. Results: Data were collected from 171 consecutive patients, treated by 46 clinicians at 32 hospitals. There were 47 RTR resubmissions (27%) due to 65 major violations. The relative rate of resubmission decreased by 29% per year as the study progressed (odds ratio OR. 0.71, P = .02). The majority of resubmissions were due to contouring violations (39 of 65) and dosimetric violations (22 of 65). For each additional patient accrued, significant decreases in RTR resubmission were seen at both clinician level (OR 0.75, P = .02) and site level (OR 0.72, P = .01). The rate of resubmission due to dosimetric violations was only 1.6% after the first 5 patients. Use of IMRT was associated with lower rates of resubmission compared with 3-dimensional conformal radiation therapy (OR 0.38, P = .05). Conclusion: Several low- and high-risk factors that may assist with tailoring future clinical trial QA were identified. Because the real-time resubmission rate was largely independent of the credentialing exercise, some form of RTR QA is recommended. The greatest benefit from QAwas derived early in trial activation and clinician experience. Crown Copyright (C) 2015 Published by Elsevier Inc. All rights reserved.
引用
收藏
页码:1045 / 1051
页数:7
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