| Title: |
Adherence to contouring and treatment planning requirements within a multicentric trial -results of the quality assurance of the SAKK 09/10 trial. |
| Authors: |
Beck, Marcus; Sassowsky, Manfred; Schär, Sämi; Mathier, Etienne; Zwahlen, Daniel R; Hölscher, Tobias; Arnold, Winfried; Polat, Bülent; Hildebrandt, Guido; Müller, Arndt-Christian; Putora, Paul M.; Papachristofilou, Alexandros; Hayoz, Stefanie; Schär, Corinne; Li, Qiyu; Sumila, Marcin; Zaugg, Kathrin; Guckenberger, Matthias; Ost, Piet; Bosetti, Davide G; Reuter, Christiane; Gomez, Silvia; Khanfir, Kaouthar; Aebersold, Daniel M.; Ghadjar, Pirus; Dal Pra, Alan |
| Source: |
Beck, Marcus; Sassowsky, Manfred; Schär, Sämi; Mathier, Etienne; Zwahlen, Daniel R; Hölscher, Tobias; Arnold, Winfried; Polat, Bülent; Hildebrandt, Guido; Müller, Arndt-Christian; Putora, Paul M.; Papachristofilou, Alexandros; Hayoz, Stefanie; Schär, Corinne; Li, Qiyu; Sumila, Marcin; Zaugg, Kathrin; Guckenberger, Matthias; Ost, Piet; Bosetti, Davide G; . (2022). Adherence to contouring and treatment planning requirements within a multicentric trial -results of the quality assurance of the SAKK 09/10 trial. International journal of radiation oncology, biology, physics, 113(1), pp. 80-91. Elsevier 10.1016/j.ijrobp.2021.12.174 |
| Publisher Information: |
Elsevier |
| Publication Year: |
2022 |
| Collection: |
BORIS (Bern Open Repository and Information System, University of Bern) |
| Subject Terms: |
610 Medicine & health |
| Description: |
PURPOSE To evaluate the results of the radiation therapy (RT) quality assurance (QA) program of the phase III randomized "XXXX-Anonymized for Review" trial in biochemically recurrent prostate cancer (PC) patients after prostatectomy. METHODS AND MATERIALS Within the "XXXX-Anonymized for Review" trial testing 64Gy versus 70Gy salvage RT, a central collection of treatment plans were performed, which were thoroughly reviewed by a dedicated medical physicist and radiation oncologist. Adherence to the treatment protocol and specifically to the European Organization for the Research and Treatment of Cancer (EORTC) guidelines for target volume definition (classified as deviation observed yes vs. no) and its potential correlation with acute and late toxicity (Common Terminology Criteria for Adverse Events (CTCAE) v4.0) and freedom from biochemical progression (FFBP) were investigated. RESULTS The treatment plans of 344 patients treated between February 2011 and April 2014 depicted important deviations to the EORTC guidelines and to the recommendations per trial protocol. For example, in up to half of the cases, the delineated structures deviated from the protocol (e.g., prostate bed (PB) in 48.8%, rectal wall (RW) in 41%). In addition, variations in clinical (CTV) - and planning target volume (PTV) occurred frequently (e.g., CTV and PTV deviations in up to 42.4% and 25.9%, respectively). The detected deviations showed a significant association with a lower risk of grade ≥ 2 gastrointestinal (GI) acute toxicity when CTV not overlapped RW vs. CTV overlapping RW, (OR 0.43; CI [0.22, 0.85]; p= 0.014), and a higher rate of grade ≥ 2 late genitourinary (GU) toxicity in case of the CTV overlapped with RW, (OR 2.58; CI [1.17, 5.72]; p= 0.019). A marginally significant lower risk of grade ≥ 2 late GU toxicity in patients when PB not overlapping RW versus overlapping RW was observed (OR 0.51; CI [0.25, 1.03]; p= 0.06). In addition, a marginally significant decrease of FFBP in patients with PTV not including surgical clips as ... |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
English |
| Relation: |
https://boris.unibe.ch/164420/ |
| Availability: |
https://boris.unibe.ch/164420/1/1-s2.0-S0360301621034477-main.pdf; https://boris.unibe.ch/164420/ |
| Rights: |
info:eu-repo/semantics/openAccess |
| Accession Number: |
edsbas.D8CB3A15 |
| Database: |
BASE |