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de Leeuw ALMP, Giralt J, Tao Y, Benavente S, France Nguyen TV, Hoebers FJP, Hoeben A, Terhaard CHJ, Wai Lee L, Friesland S, Steenbakkers RJHM, Tans L, Heukelom J, Kayembe MT, van Kranen SR, Bartelink H, Rasch CRN, Sonke JJ, Hamming-Vrieze O. A multicentric randomized controlled phase III trial of adaptive and 18F-FDG-PET-guided dose-redistribution in locally advanced head and neck squamous cell carcinoma (ARTFORCE). Radiother Oncol 2024; 196:110281. [PMID: 38636708 DOI: 10.1016/j.radonc.2024.110281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 03/16/2024] [Accepted: 04/11/2024] [Indexed: 04/20/2024]
Abstract
BACKGROUND AND PURPOSE This multicenter randomized phase III trial evaluated whether locoregional control of patients with LAHNSCC could be improved by fluorodeoxyglucose-positron emission tomography (FDG-PET)-guided dose-escalation while minimizing the risk of increasing toxicity using a dose-redistribution and scheduled adaptation strategy. MATERIALS AND METHODS Patients with T3-4-N0-3-M0 LAHNSCC were randomly assigned (1:1) to either receive a dose distribution ranging from 64-84 Gy/35 fractions with adaptation at the 10thfraction (rRT) or conventional 70 Gy/35 fractions (cRT). Both arms received concurrent three-cycle 100 mg/m2cisplatin. Primary endpoints were 2-year locoregional control (LRC) and toxicity. Primary analysis was based on the intention-to-treat principle. RESULTS Due to slow accrual, the study was prematurely closed (at 84 %) after randomizing 221 eligible patients between 2012 and 2019 to receive rRT (N = 109) or cRT (N = 112). The 2-year LRC estimate difference of 81 % (95 %CI 74-89 %) vs. 74 % (66-83 %) in the rRT and cRT arm, respectively, was not found statistically significant (HR 0.75, 95 %CI 0.43-1.31,P=.31). Toxicity prevalence and incidence rates were similar between trial arms, with exception for a significant increased grade ≥ 3 pharyngolaryngeal stenoses incidence rate in the rRT arm (0 versus 4 %,P=.05). In post-hoc subgroup analyses, rRT improved LRC for patients with N0-1 disease (HR 0.21, 95 %CI 0.05-0.93) and oropharyngeal cancer (0.31, 0.10-0.95), regardless of HPV. CONCLUSION Adaptive and dose redistributed radiotherapy enabled dose-escalation with similar toxicity rates compared to conventional radiotherapy. While FDG-PET-guided dose-escalation did overall not lead to significant tumor control or survival improvements, post-hoc results showed improved locoregional control for patients with N0-1 disease or oropharyngeal cancer treated with rRT.
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Affiliation(s)
- Anna Liza M P de Leeuw
- Department of Radiation Oncology, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands.
| | - Jordi Giralt
- Department of Radiation Oncology, Hospital General Vall d'Hebron, Barcelona, Spain; Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | - Yungan Tao
- Department of Radiation Oncology, Institut Gustave Roussy, Villejuif, France
| | - Sergi Benavente
- Department of Radiation Oncology, Hospital General Vall d'Hebron, Barcelona, Spain; Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | | | - Frank J P Hoebers
- Department of Radiation Oncology (Maastro), GROW School for Oncology and Reproduction, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Ann Hoeben
- Division of Medical Oncology, Department of Internal Medicine, GROW-School of Oncology and Developmental Biology Maastricht University Medical Center+, Maastricht, The Netherlands
| | - Chris H J Terhaard
- Department of Radiation Oncology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Lip Wai Lee
- Department of Radiation Oncology, The Christie NHS Foundation Trust, Manchester, United Kingdom
| | - Signe Friesland
- Department of Radiation Oncology, Karolinska Institute, Stockholm, Sweden
| | - Roel J H M Steenbakkers
- Department of Radiation Oncology, University Medical Center Groningen, Groningen, The Netherlands
| | - Lisa Tans
- Department of Radiation Oncology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Jolien Heukelom
- Department of Radiation Oncology (Maastro), GROW School for Oncology and Reproduction, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Mutamba T Kayembe
- Department of Bioinformatics and Statistics, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
| | - Simon R van Kranen
- Department of Radiation Oncology, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
| | - Harry Bartelink
- Department of Radiation Oncology, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
| | - Coen R N Rasch
- Department of Radiation Oncology, Leiden University Medical Center, Leiden, The Netherlands
| | - Jan-Jakob Sonke
- Department of Radiation Oncology, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
| | - Olga Hamming-Vrieze
- Department of Radiation Oncology, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands.
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