Novel Prognostic Index of High-Risk Prostate Cancer Using Simple Summation of Very High-Risk Factors

This study aimed to examine the role of very high-risk (VHR) factors (T3b–4 and Gleason score 9–10) for prognosis of clinically localized high-risk prostate cancer. We reviewed multi-institutional retrospective data of 1413 patients treated with radiotherapy (558 patients treated with external beam...

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Main Authors: Hideya Yamazaki, Gen Suzuki, Koji Masui, Norihiro Aibe, Daisuke Shimizu, Takuya Kimoto, Kei Yamada, Takumi Shiraishi, Atsuko Fujihara, Koji Okihara, Ken Yoshida, Satoaki Nakamura, Haruumi Okabe
Format: Article
Language:English
Published: MDPI AG 2021-07-01
Series:Cancers
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Online Access:https://www.mdpi.com/2072-6694/13/14/3486
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author Hideya Yamazaki
Gen Suzuki
Koji Masui
Norihiro Aibe
Daisuke Shimizu
Takuya Kimoto
Kei Yamada
Takumi Shiraishi
Atsuko Fujihara
Koji Okihara
Ken Yoshida
Satoaki Nakamura
Haruumi Okabe
author_facet Hideya Yamazaki
Gen Suzuki
Koji Masui
Norihiro Aibe
Daisuke Shimizu
Takuya Kimoto
Kei Yamada
Takumi Shiraishi
Atsuko Fujihara
Koji Okihara
Ken Yoshida
Satoaki Nakamura
Haruumi Okabe
author_sort Hideya Yamazaki
collection DOAJ
description This study aimed to examine the role of very high-risk (VHR) factors (T3b–4 and Gleason score 9–10) for prognosis of clinically localized high-risk prostate cancer. We reviewed multi-institutional retrospective data of 1413 patients treated with radiotherapy (558 patients treated with external beam radiotherapy (EBRT) and 855 patients treated with brachytherapy (BT) ± EBRT. We introduced an index by simple summation of the number of VHR factors—VHR-0, VHR-1, and VHR-2. With median follow-up of 69.6 months, the 5-year biochemical disease free survival rate (bDFS), prostate cancer-specific mortality (PCSM), and distant metastasis-free survival (DMSF) rates were 59.4%, 7.65%, and 83.2% for the VHR-2 group, respectively; 86.7%, 1.50%, and 95.4% for the VHR-1 group, respectively; and 93.1%, 0.12%, and 98.2% for the VHR-0 group, respectively. The VHR-2 group had significantly worse bDFS, PCSM, and DMSF than the VHR-0 (hazard ratios: 4.55, 9.607, and 7.904, respectively) and VHR-1 (hazard ratios: 1.723, 2.391, and 1.491, respectively) groups. The VHR-2 group could be identified as a super high-risk group compared with other groups, and could be a good candidate for clinical trials using multimodal intensified treatments. Simple summation of the number of VHR factors is an easy and useful predictive index for bDFS, PCSM, and DMSF.
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spelling doaj.art-eada6e3052644e0482ffc4f7cd3acc612023-11-22T03:24:00ZengMDPI AGCancers2072-66942021-07-011314348610.3390/cancers13143486Novel Prognostic Index of High-Risk Prostate Cancer Using Simple Summation of Very High-Risk FactorsHideya Yamazaki0Gen Suzuki1Koji Masui2Norihiro Aibe3Daisuke Shimizu4Takuya Kimoto5Kei Yamada6Takumi Shiraishi7Atsuko Fujihara8Koji Okihara9Ken Yoshida10Satoaki Nakamura11Haruumi Okabe12Department of Radiology, and Urology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajiicho Kawaramachi Hirokoji, Kamigyo-ku, Kyoto 602-8566, JapanDepartment of Radiology, and Urology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajiicho Kawaramachi Hirokoji, Kamigyo-ku, Kyoto 602-8566, JapanDepartment of Radiology, and Urology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajiicho Kawaramachi Hirokoji, Kamigyo-ku, Kyoto 602-8566, JapanDepartment of Radiology, and Urology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajiicho Kawaramachi Hirokoji, Kamigyo-ku, Kyoto 602-8566, JapanDepartment of Radiology, and Urology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajiicho Kawaramachi Hirokoji, Kamigyo-ku, Kyoto 602-8566, JapanDepartment of Radiology, and Urology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajiicho Kawaramachi Hirokoji, Kamigyo-ku, Kyoto 602-8566, JapanDepartment of Radiology, and Urology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajiicho Kawaramachi Hirokoji, Kamigyo-ku, Kyoto 602-8566, JapanDepartment of Radiology, and Urology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajiicho Kawaramachi Hirokoji, Kamigyo-ku, Kyoto 602-8566, JapanDepartment of Radiology, and Urology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajiicho Kawaramachi Hirokoji, Kamigyo-ku, Kyoto 602-8566, JapanDepartment of Radiology, and Urology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajiicho Kawaramachi Hirokoji, Kamigyo-ku, Kyoto 602-8566, JapanDepartment of Department of Radiology, Kansai Medical University, Hirakata 573-1010, JapanDepartment of Department of Radiology, Kansai Medical University, Hirakata 573-1010, JapanDepartment of Radiology, Ujitakeda Hospital, Uji-City 611-0021, JapanThis study aimed to examine the role of very high-risk (VHR) factors (T3b–4 and Gleason score 9–10) for prognosis of clinically localized high-risk prostate cancer. We reviewed multi-institutional retrospective data of 1413 patients treated with radiotherapy (558 patients treated with external beam radiotherapy (EBRT) and 855 patients treated with brachytherapy (BT) ± EBRT. We introduced an index by simple summation of the number of VHR factors—VHR-0, VHR-1, and VHR-2. With median follow-up of 69.6 months, the 5-year biochemical disease free survival rate (bDFS), prostate cancer-specific mortality (PCSM), and distant metastasis-free survival (DMSF) rates were 59.4%, 7.65%, and 83.2% for the VHR-2 group, respectively; 86.7%, 1.50%, and 95.4% for the VHR-1 group, respectively; and 93.1%, 0.12%, and 98.2% for the VHR-0 group, respectively. The VHR-2 group had significantly worse bDFS, PCSM, and DMSF than the VHR-0 (hazard ratios: 4.55, 9.607, and 7.904, respectively) and VHR-1 (hazard ratios: 1.723, 2.391, and 1.491, respectively) groups. The VHR-2 group could be identified as a super high-risk group compared with other groups, and could be a good candidate for clinical trials using multimodal intensified treatments. Simple summation of the number of VHR factors is an easy and useful predictive index for bDFS, PCSM, and DMSF.https://www.mdpi.com/2072-6694/13/14/3486very high-riskT3b–4Gleason 9–10prostate cancerbrachytherapy
spellingShingle Hideya Yamazaki
Gen Suzuki
Koji Masui
Norihiro Aibe
Daisuke Shimizu
Takuya Kimoto
Kei Yamada
Takumi Shiraishi
Atsuko Fujihara
Koji Okihara
Ken Yoshida
Satoaki Nakamura
Haruumi Okabe
Novel Prognostic Index of High-Risk Prostate Cancer Using Simple Summation of Very High-Risk Factors
Cancers
very high-risk
T3b–4
Gleason 9–10
prostate cancer
brachytherapy
title Novel Prognostic Index of High-Risk Prostate Cancer Using Simple Summation of Very High-Risk Factors
title_full Novel Prognostic Index of High-Risk Prostate Cancer Using Simple Summation of Very High-Risk Factors
title_fullStr Novel Prognostic Index of High-Risk Prostate Cancer Using Simple Summation of Very High-Risk Factors
title_full_unstemmed Novel Prognostic Index of High-Risk Prostate Cancer Using Simple Summation of Very High-Risk Factors
title_short Novel Prognostic Index of High-Risk Prostate Cancer Using Simple Summation of Very High-Risk Factors
title_sort novel prognostic index of high risk prostate cancer using simple summation of very high risk factors
topic very high-risk
T3b–4
Gleason 9–10
prostate cancer
brachytherapy
url https://www.mdpi.com/2072-6694/13/14/3486
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