Background/Aim: Late toxicity and long-term outcomes of a phase I-II trial on patients with prostate cancer treated with an integrated boost to the dominant intraprostatic lesion (DIL) are reported. Patients and Methods: Patients were treated using intensity-modulated radiotherapy, with a simultaneous integrated boost to the DIL, defined on staging magnetic resonance imaging, delivering 72 Gy in 1.8 Gy/fraction to prostate/seminal vesicles and 80 Gy in 2 Gy/fraction to the DIL. The primary endpoint was acute toxicity and secondary endpoints were late toxicity and biochemical disease-free survival. Results: Forty-four patients were enrolled. The median follow-up was 120 (range=25-150) months. Five-year rates of grade 3 late gastrointestinal and genitourinary toxicity were 2.3% and 4.5%, respectively; only one grade 4 late genitourinary toxicity was recorded. Five-year biochemical relapse-free and overall survival rates were 95.3% and 95.5%, respectively. Conclusion: The treatment was well tolerated and achieved excellent results in terms of outcome in patients with low-intermediate Gleason’s score and low risk of nodal metastasis.

Simultaneous integrated radiotherapy boost to the dominant intraprostatic lesion: Final results of a phase I/II trial

Ippolito E.;
2020-01-01

Abstract

Background/Aim: Late toxicity and long-term outcomes of a phase I-II trial on patients with prostate cancer treated with an integrated boost to the dominant intraprostatic lesion (DIL) are reported. Patients and Methods: Patients were treated using intensity-modulated radiotherapy, with a simultaneous integrated boost to the DIL, defined on staging magnetic resonance imaging, delivering 72 Gy in 1.8 Gy/fraction to prostate/seminal vesicles and 80 Gy in 2 Gy/fraction to the DIL. The primary endpoint was acute toxicity and secondary endpoints were late toxicity and biochemical disease-free survival. Results: Forty-four patients were enrolled. The median follow-up was 120 (range=25-150) months. Five-year rates of grade 3 late gastrointestinal and genitourinary toxicity were 2.3% and 4.5%, respectively; only one grade 4 late genitourinary toxicity was recorded. Five-year biochemical relapse-free and overall survival rates were 95.3% and 95.5%, respectively. Conclusion: The treatment was well tolerated and achieved excellent results in terms of outcome in patients with low-intermediate Gleason’s score and low risk of nodal metastasis.
2020
Dominant intraprostatic lesion; Intensity-modulated radiotherapy; Phase I-II; Prostate neoplasms; Simultaneous integrated boost
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12610/81758
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