Mixed-Beam Approach for High-Risk Prostate Cancer Carbon-Ion Boost Followed by Photon Intensity-Modulated Radiotherapy: Preliminary Results of Phase II Trial AIRC-IG-14300

Mixed-Beam Approach for High-Risk Prostate Cancer Carbon-Ion Boost Followed by Photon Intensity-Modulated Radiotherapy: Preliminary Results of Phase II Trial AIRC-IG-14300

PurposeThis study represents a descriptive analysis of preliminary results of a Phase II trial on a novel mixed beam radiotherapy (RT) approach, consisting of carbon ions RT (CIRT) followed by intensity-modulated photon RT, in combination with hormonal therapy, for high-risk prostate cancer (HR PCa)...

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Main Authors: Giulia Marvaso, Barbara Vischioni, Matteo Pepa, Mattia Zaffaroni, Stefania Volpe, Filippo Patti, Federica Bellerba, Sara Gandini, Stefania Comi, Giulia Corrao, Dario Zerini, Matteo Augugliaro, Cristiana Fodor, Stefania Russo, Silvia Molinelli, Mario Ciocca, Rosalinda Ricotti, Francesca Valvo, Tommaso Giandini, Barbara Avuzzi, Riccardo Valdagni, Ottavio De Cobelli, Federica Cattani, Ester Orlandi, Barbara Alicja Jereczek-Fossa, Roberto Orecchia
Format: article
Language:EN
Published: Frontiers Media S.A. 2021
Subjects:
carbon-ion radiotherapy
intensity modulated radiotherapy
high-risk prostate cancer
phase II study
mixed-beam approach
Neoplasms. Tumors. Oncology. Including cancer and carcinogens
RC254-282
Online Access:https://doaj.org/article/fe76b859e37540c1ac9f11af84dce1fc
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Summary:PurposeThis study represents a descriptive analysis of preliminary results of a Phase II trial on a novel mixed beam radiotherapy (RT) approach, consisting of carbon ions RT (CIRT) followed by intensity-modulated photon RT, in combination with hormonal therapy, for high-risk prostate cancer (HR PCa) with a special focus on acute toxicity.MethodsPrimary endpoint was the evaluation of safety in terms of acute toxicity. Secondary endpoints were early and long-term tolerability of treatment, quality of life (QoL), and efficacy. Data on acute and late toxicities were collected according to RTOG/EORTC. QoL of enrolled patients was assessed by IPSS, EORTC QLQ-C30, EORTC QLQ-PR25, and sexual activity by IIEF-5.ResultsTwenty-six patients were enrolled in the study, but only 15 completed so far the RT course and were included. Immediately after CIRT, no patients experienced GI/GU toxicity. At 1 and 3 months from the whole course RT completion, no GI/GU toxicities greater than grade 2 were observed. QoL scores were overall satisfactory.ConclusionsThe feasibility of the proposed mixed treatment schedule was assessed, and an excellent acute toxicity profile was recorded. Such findings instil confidence in the continuation of this mixed approach, with evaluation of long-term tolerability and efficacy.

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