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3 "Sung Kyu Hong"
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Genitourinary cancer
Oncological Outcomes in Men with Metastatic Castration-Resistant Prostate Cancer Treated with Enzalutamide with versus without Confirmatory Bone Scan
Chang Wook Jeong, Jang Hee Han, Dong Deuk Kwon, Jae Young Joung, Choung-Soo Kim, Hanjong Ahn, Jun Hyuk Hong, Tae-Hwan Kim, Byung Ha Chung, Seong Soo Jeon, Minyong Kang, Sung Kyu Hong, Tae Young Jung, Sung Woo Park, Seok Joong Yun, Ji Yeol Lee, Seung Hwan Lee, Seok Ho Kang, Cheol Kwak
Cancer Res Treat. 2024;56(2):634-641.   Published online December 5, 2023
DOI: https://doi.org/10.4143/crt.2023.848
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Purpose
In men with metastatic castration-resistant prostate cancer (mCRPC), new bone lesions are sometimes not properly categorized through a confirmatory bone scan, and clinical significance of the test itself remains unclear. This study aimed to demonstrate the performance rate of confirmatory bone scans in a real-world setting and their prognostic impact in enzalutamide-treated mCRPC.
Materials and Methods
Patients who received oral enzalutamide for mCRPC during 2014-2017 at 14 tertiary centers in Korea were included. Patients lacking imaging assessment data or insufficient drug exposure were excluded. The primary outcome was overall survival (OS). Secondary outcomes included performance rate of confirmatory bone scans in a real-world setting. Kaplan-Meier analysis and multivariate Cox regression analysis were performed.
Results
Overall, 520 patients with mCRPC were enrolled (240 [26.2%] chemotherapy-naïve and 280 [53.2%] after chemotherapy). Among 352 responders, 92 patients (26.1%) showed new bone lesions in their early bone scan. Confirmatory bone scan was performed in 41 patients (44.6%), and it was associated with prolonged OS in the entire population (median, 30.9 vs. 19.7 months; p < 0.001), as well as in the chemotherapy-naïve (median, 47.2 vs. 20.5 months; p=0.011) and post-chemotherapy sub-groups (median, 25.5 vs. 18.0 months; p=0.006). Multivariate Cox regression showed that confirmatory bone scan performance was an independent prognostic factor for OS (hazard ratio 0.35, 95% confidence interval, 0.18 to 0.69; p=0.002).
Conclusion
Confirmatory bone scan performance was associated with prolonged OS. Thus, the premature discontinuation of enzalutamide without confirmatory bone scans should be discouraged.

Citations

Citations to this article as recorded by  
  • ECM-mimicking hydrogel models of human adipose tissue identify deregulated lipid metabolism in the prostate cancer-adipocyte crosstalk under antiandrogen therapy
    Agathe Bessot, Joan Röhl, Maria Emmerich, Anton Klotz, Akhilandeshwari Ravichandran, Christoph Meinert, David Waugh, Jacqui McGovern, Jenni Gunter, Nathalie Bock
    Materials Today Bio.2025; 30: 101424.     CrossRef
  • 3,418 View
  • 134 Download
  • 1 Web of Science
  • 1 Crossref
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Selection Criteria for Active Surveillance of Patients with Prostate Cancer in Korea: A Multicenter Analysis of Pathology after Radical Prostatectomy
Chang Wook Jeong, Sung Kyu Hong, Seok Soo Byun, Seong Soo Jeon, Seong Il Seo, Hyun Moo Lee, Hanjong Ahn, Dong Deuk Kwon, Hong Koo Ha, Tae Gyun Kwon, Jae Seung Chung, Cheol Kwak, Hyung Jin Kim
Cancer Res Treat. 2018;50(1):265-274.   Published online April 14, 2017
DOI: https://doi.org/10.4143/crt.2016.477
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Purpose
Korean patients with prostate cancer (PC) typically present with a more aggressive disease than patients in Western populations. Consequently, it is unclear if the current criteria for active surveillance (AS) can safely be applied to Korean patients. Therefore, this study was conducted to define appropriate selection criteria for AS for patients with PC in Korea.
Materials and Methods
We conducted a multicenter retrospective study of 2,126 patients with low risk PC who actually underwent radical prostatectomy. The primary outcome was an unfavorable disease, which was defined by non-organ confined disease or an upgrading of the Gleason score to ≥ 7 (4+3). Predictive variables of an unfavorable outcome were identified by multivariate analysis using randomly selected training samples (n=1,623, 76.3%). We compared our selected criteria to various Western criteria for the primary outcome and validated our criteria using the remaining validation sample (n=503, 23.7%).
Results
A non-organ confined disease rate of 14.9% was identified, with an increase in Gleason score ≥ 7 (4+3) of 8.7% and a final unfavorable disease status of 20.8%. The following criteria were selected: Gleason score ≤ 6, clinical stage T1-T2a, prostate-specific antigen (PSA) ≤ 10 ng/mL, PSA density < 0.15 ng/mL/mL, number of positive cores ≤ 2, and maximum cancer involvement in any one core ≤ 20%. These criteria provided the lowest unfavorable disease rate (11.7%) when compared to Western criteria (13.3%-20.7%), and their validity was confirmed using the validation sample (5.9%).
Conclusion
We developed AS criteria which are appropriate for Korean patients with PC. Prospective studies using these criteria are now warranted.

Citations

Citations to this article as recorded by  
  • Outcomes of active surveillance for Japanese patients with prostate cancer (PRIAS‐JAPAN)
    Takuma Kato, Ryuji Matsumoto, Akira Yokomizo, Yoichiro Tohi, Hiroshi Fukuhara, Yoichi Fujii, Keiichiro Mori, Takuma Sato, Junichi Inokuchi, Katsuyoshi Hashine, Shinichi Sakamoto, Hidefumi Kinoshita, Koji Inoue, Toshiki Tanikawa, Takanobu Utsumi, Takayuki
    BJU International.2024; 134(4): 652.     CrossRef
  • Has Active Surveillance for Prostate Cancer Become Safer? Lessons Learned from a Global Clinical Registry
    Chris Bangma, Paul Doan, Lin Zhu, Sebastiaan Remmers, Daan Nieboer, Jozien Helleman, Monique J. Roobol, Mikio Sugimoto, Byung Ha Chung, Lui Shiong Lee, Mark Frydenberg, Laurence Klotz, Michael Peacock, Antoinette Perry, Anders Bjartell, Antti Rannikko, Mi
    European Urology Oncology.2024;[Epub]     CrossRef
  • Establishment of Prospective Registry of Active Surveillance for Prostate Cancer: The Korean Urological Oncology Society Database
    Gyoohwan Jung, Jung Kwon Kim, Seong Soo Jeon, Jae Hoon Chung, Cheol Kwak, Chang Wook Jeong, Hanjong Ahn, Jae Young Joung, Tae Gyun Kwon, Sung Woo Park, Seok-Soo Byun
    The World Journal of Men's Health.2023; 41(1): 110.     CrossRef
  • The Role of Magnetic Resonance Imaging (MRI) and MRI-Targeted Biopsy for Active Surveillance
    Chang Wook Jeong
    Journal of Urologic Oncology.2023; 21(2): 97.     CrossRef
  • Incidence and mortality projections for major cancers among Korean men until 2034, with a focus on prostate cancer
    Sahyun Pak, Kyu-Won Jung, Eun-Hye Park, Young Hwii Ko, Young-Joo Won, Jae Young Joung
    Investigative and Clinical Urology.2022; 63(2): 175.     CrossRef
  • Role of single nucleotide polymorphisms of the HSD3B1 gene (rs6203 and rs33937873) in the prediction of prostate cancer risk
    Yasmine Amrousy, Hesham Haffez, Doaa Abdou, Hanaa Atya
    Molecular Medicine Reports.2022;[Epub]     CrossRef
  • A single-center long-term experience of active surveillance for prostate cancer: 15 years of follow-up
    Sang Hun Song, Jung Kwon Kim, Hakmin Lee, Sangchul Lee, Sung Kyu Hong, Seok-Soo Byun
    Investigative and Clinical Urology.2021; 62(1): 32.     CrossRef
  • The clinical impact of strict criteria for active surveillance of prostate cancer in Korean population: Results from a prospective cohort
    Jungyo Suh, Hyeong Dong Yuk, Minyong Kang, Bum Sik Tae, Ja Hyeon Ku, Hyeon Hoe Kim, Cheol Kwak, Chang Wook Jeong
    Investigative and Clinical Urology.2021; 62(4): 430.     CrossRef
  • Comparison of Characteristics, Follow-up and Outcomes of Active Surveillance for Prostate Cancer According to Ethnicity in the GAP3 Global Consortium Database
    Kerri Beckmann, Aida Santaolalla, Jozien Helleman, Peter Carroll, Byung Ha Chung, Lui Shiong Lee, Antoinette Perry, Jose Rubio-Briones, Mikio Sugimoto, Bruce Trock, Riccardo Valdagni, Prokar Dasgupta, Mieke Van Hemelrijck, Oussama Elhage, Bruce Trock, Beh
    European Urology Open Science.2021; 34: 47.     CrossRef
  • Patients with Biopsy Gleason Score 3 + 4 Are Not Appropriate Candidates for Active Surveillance
    Juhyun Park, Sangjun Yoo, Min Chul Cho, Chang Wook Jeong, Ja Hyeon Ku, Cheol Kwak, Hyeon Hoe Kim, Hyeon Jeong
    Urologia Internationalis.2020; 104(3-4): 199.     CrossRef
  • Current status and progress of focal therapy in Asia
    Takumi Shiraishi, Osamu Ukimura
    Current Opinion in Urology.2018; 28(6): 529.     CrossRef
  • The MMP2 rs243865 polymorphism increases the risk of prostate cancer: A meta-analysis
    Kun Liu, Shuo Gu, Xuzhong Liu, Qing Sun, Yunyan Wang, Junsong Meng, Zongyuan Xu
    Oncotarget.2017; 8(42): 72933.     CrossRef
  • 9,117 View
  • 249 Download
  • 9 Web of Science
  • 12 Crossref
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Re-stratification of Patients with High-Risk Prostate Cancer According to the NCCN Guidelines among Patients Who Underwent Radical Prostatectomy: An Analysis Based on the K-CaP Registry
Kwang Suk Lee, Kyo Chul Koo, In Young Choi, Ji Youl Lee, Jun Hyuk Hong, Choung-Soo Kim, Hyun Moo Lee, Sung Kyu Hong, Seok-Soo Byun, Koon Ho Rha, Byung Ha Chung
Cancer Res Treat. 2018;50(1):88-94.   Published online March 7, 2017
DOI: https://doi.org/10.4143/crt.2016.494
AbstractAbstract PDFPubReaderePub
Purpose
The present study aimed to re-stratify patients with high-risk prostate cancer according to the National Comprehensive Cancer Network guidelines among patients who underwent radical prostatectomy (RP).
Materials and Methods
This study used the Korean Prostate Cancer Database registry and identified 1,060 patients with high-risk prostate cancer who underwent RP between May 2001 and April 2013. All patients were categorized into risk groups, and subgroups were identified according to the type and number of high-risk factors.
Results
Of the 1,060 high-risk patients, 599 (56.5%), 408 (38.5%), and 53 (5.0%) had 1, 2, and 3 risk factors, respectively. In multivariate analysis, the Gleason score, percentage of positive biopsy cores, and number of risk factors present were identified as independent predictors of biochemical recurrence. There were significant differences in the 5-year postoperative biochemical failure-free survival (BCFFS) rate among the different high-risk factor subgroups (log-rank p < 0.001). There were no significant differences in the BCFFS rate between the subgroup of high-risk patients with a prostate-specific antigen level > 20 ng/mL alone and the intermediate-risk group with all factors (log-rank p=0.919 and p=0.781, respectively). Additionally, no significant differencewas noted in the BCFFS rate between high-risk patients having all factors and those in the very-high-risk group (p=0.566).
Conclusion
We successfully re-stratified patients with high-risk prostate cancer and identified the combinations of high-risk criteria that will help in the selection of patients for RP.

Citations

Citations to this article as recorded by  
  • Prostate‑specific antigen density and preoperative MRI findings as predictors of biochemical recurrence in high‑risk and very high‑risk prostate cancer
    Cheng-Kuang Yang, Chi-Rei Yang, Yen-Chuan Ou, Chen-Li Cheng, Hao-Chung Ho, Kun-Yuan Chiu, Shian-Shiang Wang, Jian-Ri Li, Chuan-Shu Chen, Chi-Feng Hung, Cheng-Che Chen, Shu-Chi Wang, Chia-Yen Lin, Sheng-Chun Hung
    Oncology Letters.2023;[Epub]     CrossRef
  • Comparison of the clinicopathologic features of prostate cancer in US and Chinese populations
    Lei Zhang, Xiaoyan Liu, Rong Xia, Fei Chen, Xin Wang, Jia Bao, Yongzhao Shao, Xian Lu, Yan Wang, Jili Wang, May Thu Tun, Jonathan Melamed, Hebert Lepor, Fang-Ming Deng, Dongwen Wang, Guoping Ren
    Pathology - Research and Practice.2022; 234: 153933.     CrossRef
  • Ten-Year Results From a Phase II Study on Image Guided, Intensity Modulated Radiation Therapy With Simultaneous Integrated Boost in High-Risk Prostate Cancer
    Christian Ekanger, Svein Inge Helle, Daniel Heinrich, Dag Clement Johannessen, Ása Karlsdóttir, Yngve Nygård, Ole Johan Halvorsen, Lars Reisæter, Rune Kvåle, Liv Bolstad Hysing, Olav Dahl
    Advances in Radiation Oncology.2020; 5(3): 396.     CrossRef
  • 9,478 View
  • 248 Download
  • 4 Web of Science
  • 3 Crossref
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