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12 "Chan Woo Wee"
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Original Articles
To Use or Not to Use: Temozolomide in Elderly Patients with IDH Wild-type MGMT Promoter Unmethylated Glioblastoma Treated with Radiotherapy
Chan Woo Wee, Joo Ho Lee, Hye In Lee, Jina Kim, Jong Hee Chang, Seok-Gu Kang, Eui Hyun Kim, Ju Hyung Moon, Jaeho Cho, Chul-Kee Park, Chae-Yong Kim, Kihwan Hwang, Hong In Yoon, In Ah Kim
Received September 27, 2024  Accepted November 9, 2024  Published online November 11, 2024  
DOI: https://doi.org/10.4143/crt.2024.945    [Accepted]
AbstractAbstract PDF
Purpose
To identify a specific subgroup of patients among elderly glioblastoma patients aged 70 years or older with unmethylated MGMT promoters (eGBM-unmethylated) who would significantly benefit from the addition of temozolomide (TMZ) to radiotherapy (RT).
Materials and Methods
Newly diagnosed patients with IDH wild-type eGBM-unmethylated treated with RT were included in this multicenter analysis (n=182). RT dose was 45 Gy in 15 fractions (62.3%), 60 Gy in 30 fractions, or 61.2 Gy in 34 fractions. For patients treated with RT plus TMZ (60.4%), TMZ was administered concurrently with RT, followed by six adjuvant cycles. The primary endpoint was overall survival.
Results
During a median follow-up of 11.3 months for survivors, the median survival was 12.2 months. The median survival duration significantly improved with the addition of TMZ to RT compared with that with RT alone (13.6 months vs. 10.5 months, p=0.028). In the multivariable analysis adjusted for clinical, radiological, and genetic biomarkers, the addition of TMZ significantly improved overall survival (hazard ratio, 0.459; p=0.006). In subgroup analysis, median survival was especially improved by 4–5 months in patients with residual disease (p<0.001), Karnofsky Performance Status ≥60 (p=0.033), and age ≤75 years (p=0.090). A significant benefit of TMZ was noted only in patients with two or three of the above factors (median survival, 14.1 months vs. 10.5 months, p=0.014).
Conclusion
The addition of TMZ significantly improved the survival of patients with eGBM-unmethylated treated with RT. The suggested criteria for the specific subgroup in these patients warrant external validation for clinical application.
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Choosing Wisely between Radiotherapy Dose-Fractionation Schedules: The Molecular Graded Prognostic Assessment for Elderly Glioblastoma Patients
Hye In Lee, Jina Kim, In Ah Kim, Joo Ho Lee, Jaeho Cho, Rifaquat Rahman, Geoffrey Fell, Chan Woo Wee, Hong In Yoon
Received July 22, 2024  Accepted September 10, 2024  Published online September 11, 2024  
DOI: https://doi.org/10.4143/crt.2024.680    [Epub ahead of print]
AbstractAbstract PDFSupplementary Material
Purpose
This study aimed to develop a graded prognostic assessment (GPA) model integrating genomic characteristics for elderly patients with glioblastoma (eGBM), and to compare the efficacy of different radiotherapy schedules.
Materials and Methods
This multi-institutional retrospective study included patients aged ≥ 65 years who underwent surgical resection followed by radiotherapy with or without temozolomide (TMZ) for newly diagnosed eGBM. Based on the significant factors identified in the multivariate analysis for overall survival (OS), the molecular GPA for eGBM (eGBM-molGPA) was established.
Results
A total of 334 and 239 patients who underwent conventionally fractionated radiotherapy (CFRT) and hypofractionated radiotherapy (HFRT) were included, respectively, with 86% of patients receiving TMZ-based chemoradiation. With a median follow-up of 17.4 months (range, 3.3 to 149.9 months), the median OS was 18.7 months for CFRT+TMZ group, 15.1 months for HFRT+TMZ group, and 10.4 months for radiotherapy alone group (CFRT+TMZ vs. HFRT+TMZ: hazard ratio [HR], 1.52; p < 0.001 and CFRT+TMZ vs. radiotherapy alone: HR, 2.52; p < 0.001). In a combined analysis with the NOA-08 and Nordic trials, CFRT+TMZ group exhibited the highest survival rates among all treatment groups. The eGBM-molGPA, which integrated four clinical and three molecular parameters, stratified patients into low-, intermediate-, and high-risk groups. CFRT+TMZ significantly improved OS compared to HFRT+TMZ or radiotherapy alone in the low-risk (p=0.023) and intermediate-risk groups (p < 0.001). However, in the high-risk group, there was no significant difference in OS between treatment options (p=0.770).
Conclusion
CFRT+TMZ may be more effective than HFRT+TMZ or radiotherapy alone for selected eGBM patients. The novel eGBM-molGPA model can guide treatment selection for this patient population.
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Gynecologic cancer
Image-Guided Versus Conventional Brachytherapy for Locally Advanced Cervical Cancer: Experience of Single Institution with the Same Practitioner and Time Period
Tae Hoon Lee, Kyung Su Kim, Hak Jae Kim, Chang Heon Choi, Seonghee Kang, Keun-Yong Eom, Chan Woo Wee, Yong Sang Song, Noh Hyun Park, Jae-Weon Kim, Hyun Hoon Chung, Hee Seung Kim, Maria Lee, Hyun-Cheol Kang
Cancer Res Treat. 2023;55(1):258-269.   Published online August 10, 2022
DOI: https://doi.org/10.4143/crt.2022.418
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Purpose
This study aimed to compare treatment outcomes and toxicity profile between imaged-guided brachytherapy (IGBT) versus conventional brachytherapy (CBT) performed by the same practitioner during the same time period.
Materials and Methods
Medical records of 104 eligible patients who underwent brachytherapy for locally advanced cervical cancer were retrospectively reviewed. Fifty patients (48.1%) underwent IGBT, and 54 (51.9%) patients underwent CBT. All patients underwent concurrent chemoradiation with cisplatin. High-dose-rate intracavitary brachytherapy with dose prescription of 25-30 Gy in 4-6 fractions was performed for all patients. Late lower gastrointestinal (GI) and urinary toxicities occurred more than 3 months after the end of brachytherapy were included for comparative and dosimetric analyses.
Results
The median follow-up period was 18.33 months (range, 3.25 to 38.43 months). There were no differences in oncologic outcomes between the two groups. The IGBT group had lower rate of actuarial grade ≥ 3 toxicity than the CBT group (2-year, 4.5% vs. 25.7%; p=0.030). Cumulative equieffective D2cc of sigmoid colon was significantly correlated with grade ≥ 2 lower GI toxicity (p=0.033), while equieffective D2cc of rectum (p=0.055) and bladder (p=0.069) showed marginal significance with corresponding grade ≥ 2 toxicities in the IGBT group. Half of grade ≥ 3 lower GI toxicities impacted GI tract above the rectum. Optimal thresholds of cumulative D2cc of sigmoid colon and rectum were 69.7 Gy and 70.8 Gy, respectively, for grade ≥ 2 lower GI toxicity.
Conclusion
IGBT showed superior toxicity profile to CBT. Evaluating the dose to the GI tract above rectum by IGBT might prevent some toxicities.

Citations

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  • Cisplatin

    Reactions Weekly.2023; 1947(1): 125.     CrossRef
  • A Mixed Methods Study to Implement the Synergy Tool and Evaluate Its Impact on Long-Term Care Residents
    Farinaz Havaei, Francis Kobekyaa, Andy Ma, Maura MacPhee, Wei Zhang, Megan Kaulius, Bahar Ahmadi, Sheila Boamah, Adam Easterbrook, Amy Salmon
    Healthcare.2023; 11(15): 2187.     CrossRef
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  • 120 Download
  • 1 Web of Science
  • 2 Crossref
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Head and Neck cancer
Effect of National Oral Health Screening Program on the Risk of Head and Neck Cancer: A Korean National Population-Based Study
Chan Woo Wee, Hyo-Jung Lee, Jae-Ryun Lee, Hyejin Lee, Min-Jeong Kwoen, Woo-Jin Jeong, Keun-Yong Eom
Cancer Res Treat. 2022;54(3):709-718.   Published online October 22, 2021
DOI: https://doi.org/10.4143/crt.2021.834
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Purpose
Poor oral health is associated with head and neck cancer (HNC). We evaluated whether a national oral health screening program (OHSP) could reduce the risk of HNC.
Materials and Methods
Data from 408,247 healthy individuals aged ≥ 40 years from the National Health Insurance System-National Health Screening program during 2003 and 2004 in Korea were analyzed. The risk of HNC was compared between subjects who underwent OHSP (HEALS-Dental+, n=165,292) and routine health check-ups only (HEALS-Dental‒, n=242,955). The impact of individual oral health-related factors on HNC risk was evaluated in HEALS-Dental+.
Results
A total of 1,650 HNC cases were diagnosed. The 10-year HNC-free rate was 99.684% with a median follow-up of 11 years. The risk of all HNC (hazard ratio [HR], 1.16; 95% confidence interval [CI], 1.03 to 1.29; p=0.011) and oropharyngeal cancer (HR, 1.48; 95% CI, 1.13 to 1.94; p=0.005) was significantly higher in HEALS-Dental‒ than in HEALS-Dental+. In HEALS-Dental+, oral cavity cancer was marginally reduced (p=0.085), and missing teeth was a significant factor for HNC (HR, 1.24; 95% CI, 1.02 to 1.50; p=0.032). Toothbrushing was a significant factor in univariate analysis (p=0.028), but not in multivariate analysis (p=0.877).
Conclusion
The National OHSP significantly reduced the long-term HNC risk, particularly the incidence of oropharyngeal cancer. Routine OHSP should be considered at the population level.

Citations

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  • Gold Nanoparticles Enhance the Tumor Growth-Suppressing Effects of Cetuximab and Radiotherapy in Head and Neck Cancer In Vitro and In Vivo
    Takumi Sato, Yasumasa Kakei, Takumi Hasegawa, Masahiko Kashin, Shun Teraoka, Akinobu Yamaguchi, Ryohei Sasaki, Masaya Akashi
    Cancers.2023; 15(23): 5697.     CrossRef
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Radiotherapy versus Surgery in Early-Stage HPV-Positive Oropharyngeal Cancer
Dong-Yun Kim, Hong-Gyun Wu, Jin Ho Kim, Joo Ho Lee, Soon-Hyun Ahn, Eun-Jae Chung, Keun-Yong Eom, Young Ho Jung, Woo-Jin Jeong, Tack-Kyun Kwon, Suzy Kim, Chan Woo Wee
Cancer Res Treat. 2022;54(2):406-416.   Published online June 23, 2021
DOI: https://doi.org/10.4143/crt.2021.441
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Purpose
This study aimed to compare the outcomes of primary radiotherapy (RT) versus surgery in early-stage human papilloma virus–positive oropharyngeal squamous cell carcinoma (hpv+OPC), and investigate the preoperative clinical factors that can predict the requirement for postoperative adjuvant treatment.
Materials and Methods
This multicenter study included 166 patients with American Joint Committee on Cancer 8th edition-Stages I-II hpv+OPC. Sixty (36.1%) and 106 (63.9%) patients underwent primary (concurrent chemo)radiotherapy [(CC)RT] and surgery, respectively. Seventy-eight patients (73.6%) in the surgery group received postoperative (CC)RT.
Results
With a median follow-up of 45.6 months for survivors, the 2-year overall survival (OS), progression-free survival (PFS), and locoregional control (LC) for RT/surgery were 97.8%/96.4%, 91.1%/92.0%, and 92.9%/93.3%, respectively. In multivariate analyses, patients with synchronous radiologic extranodal extension and conglomeration (ENEcong) of metastatic lymph nodes (LNs) showed significantly poorer OS (p=0.047), PFS (p=0.001), and LC (p=0.003). In patients undergoing primary surgery, two or more clinically positive LN metastases (odds ratio [OR], 5.15; p=0.004) and LN metastases with ENEcong (OR, 3.75; p=0.009) were predictors of postoperative chemoradiotherapy. No patient in the primary RT group demonstrated late severe toxicity whereas three (2.8%), one (0.9%), and one (0.9%) patient in the surgery group showed grade 3 dysphagia, grade 3 xerostomia, and fatal oral cavity bleeding.
Conclusion
We found no differences in OS, PFS, and LC between upfront RT and surgery in stage I-II hpv+OPC which warrants comparison through a prospective trial in the treatment de-escalation era. However, most early-stage hpv+OPC patients undergoing surgery received adjuvant (CC)RT. Pretreatment LN findings were prognostic and predictive for adjuvant treatment.

Citations

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  • Definitive radio(chemo)therapy versus upfront surgery in the treatment of HPV-related localized or locally advanced oropharyngeal squamous cell carcinoma
    Jérémy Baude, Caroline Guigou, David Thibouw, Noémie Vulquin, Mireille Folia, Guillaume Constantin, Jihane Boustani, Christian Duvillard, Sylvain Ladoire, Gilles Truc, Aurélie Bertaut, Cédric Chevalier, Scott M. Langevin
    PLOS ONE.2024; 19(7): e0307658.     CrossRef
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    N. MITRYAYEVA, L. GREBINYK, S. ARTIUKH, N. BILOZOR, V. STARENKIY
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  • Assessment of Radiologic Extranodal Extension Using Combinatorial Analysis of Nodal Margin Breakdown and Metastatic Burden in Oropharyngeal Cancer
    Sungryeal Kim, Hannah Park, Se Hyun Yeou, Jin Roh, Yoo Seob Shin, Chul-Ho Kim, Eun Ju Ha, Jeon Yeob Jang
    Cancers.2023; 15(13): 3276.     CrossRef
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    Chun Wei, Xiaojun Lan, Maona Qiu, Ran Cui, Qiuxia Fu, Shafiu Umar Shinge, Tobias Muluh, Ou Jiang
    Oncology Letters.2023;[Epub]     CrossRef
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Genitourinary cancer
Prediction of Pathologic Findings with MRI-Based Clinical Staging Using the Bayesian Network Modeling in Prostate Cancer: A Radiation Oncologist Perspective
Chan Woo Wee, Bum-Sup Jang, Jin Ho Kim, Chang Wook Jeong, Cheol Kwak, Hyun Hoe Kim, Ja Hyeon Ku, Seung Hyup Kim, Jeong Yeon Cho, Sang Youn Kim
Cancer Res Treat. 2022;54(1):234-244.   Published online May 17, 2021
DOI: https://doi.org/10.4143/crt.2020.1221
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Purpose
This study aimed to develop a model for predicting pathologic extracapsular extension (ECE) and seminal vesicle invasion (SVI) while integrating magnetic resonance imaging-based T-staging (cTMRI, cT1c-cT3b).
Materials and Methods
A total of 1,915 who underwent radical prostatectomy between 2006-2016 met the inclusion/exclusion criteria. We performed a multivariate logistic regression analysis as well as Bayesian network (BN) modeling based on possible confounding factors. The BN model was internally validated using 5-fold validation.
Results
According to the multivariate logistic regression analysis, initial prostate-specific antigen (iPSA) (β=0.050, p < 0.001), percentage of positive biopsy cores (PPC) (β=0.033, p < 0.001), both lobe involvement on biopsy (β=0.359, p=0.009), Gleason score (β=0.358, p < 0.001), and cTMRI (β=0.259, p < 0.001) were significant factors for ECE. For SVI, iPSA (β=0.037, p < 0.001), PPC (β=0.024, p < 0.001), Gleason score (β=0.753, p < 0.001), and cTMRI (β=0.507, p < 0.001) showed statistical significance. BN models to predict ECE and SVI were also successfully established. The overall area under the receiver operating characteristic curve (AUC)/accuracy of the BN models were 0.76/73.0% and 0.88/89.6% for ECE and SVI, respectively. According to internal comparison between the BN model and Roach formula, BN model had improved AUC values for predicting ECE (0.76 vs. 0.74, p=0.060) and SVI (0.88 vs. 0.84, p < 0.001).
Conclusion
Two models to predict pathologic ECE and SVI integrating cTMRI were established and installed on a separate website for public access to guide radiation oncologists.

Citations

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  • Measurements of target volumes and organs at risk using DW‑MRI in patients with central lung cancer accompanied with atelectasis
    Xinli Zhang, Tong Liu, Hong Zhang, Mingbin Zhang
    Molecular and Clinical Oncology.2023;[Epub]     CrossRef
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  • 144 Download
  • 1 Web of Science
  • 1 Crossref
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CNS cancer
The Role of Postoperative Radiotherapy in Intracranial Solitary Fibrous Tumor/Hemangiopericytoma: A Multi-institutional Retrospective Study (KROG 18-11)
Joo Ho Lee, Seung Hyuck Jeon, Chul-Kee Park, Sung-Hye Park, Hong In Yoon, Jong Hee Chang, Chang-Ok Suh, Su Jeong Kang, Do Hoon Lim, In Ah Kim, Jin Hee Kim, Jung Ho Im, Sung-Hwan Kim, Chan Woo Wee, Il Han Kim
Cancer Res Treat. 2022;54(1):65-74.   Published online March 24, 2021
DOI: https://doi.org/10.4143/crt.2021.142
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Purpose
This study aimed to evaluate the role of postoperative radiotherapy (PORT) in intracranial solitary fibrous tumor/hemangiopericytoma (SFT/HPC).
Materials and Methods
A total of 133 patients with histologically confirmed HPC were included from eight institutions. Gross total resection (GTR) and subtotal resection (STR) were performed in 86 and 47 patients, respectively. PORT was performed in 85 patients (64%). The prognostic effects of sex, age, performance, World Health Organization (WHO) grade, location, size, Ki-67, surgical extent, and PORT on local control (LC), distant metastasis-free survival (DMFS), progression-free survival (PFS), and overall survival (OS) were estimated by univariate and multivariate analyses.
Results
The 10-year PFS, and OS rates were 45%, and 71%, respectively. The multivariate analysis suggested that PORT significantly improved LC (p < 0.001) and PFS (p < 0.001). The PFS benefit of PORT was maintained in the subgroup of GTR (p=0.001), WHO grade II (p=0.001), or STR (p < 0.001). In the favorable subgroup of GTR and WHO grade II, PORT was also significantly related to better PFS (p=0.028). WHO grade III was significantly associated with poor DMFS (p=0.029). In the PORT subgroup, the 0-0.5 cm margin of the target volume showed an inferior LC to a large margin with 1.0-2.0 cm (p=0.021). Time-dependent Cox proportion analysis showed that distant failures were significantly associated with poor OS (p=0.003).
Conclusion
This multicenter study supports the role of PORT in disease control of intracranial SFT/HPC, irrespective of the surgical extent and grade. For LC, PORT should enclose the tumor bed with sufficient margin.

Citations

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  • Development of an MRI‐Based Comprehensive Model Fusing Clinical, Radiomics and Deep Learning Models for Preoperative Histological Stratification in Intracranial Solitary Fibrous Tumor
    Xiaohong Liang, Kaiqiang Tang, Xiaoai Ke, Jian Jiang, Shenglin Li, Caiqiang Xue, Juan Deng, Xianwang Liu, Cheng Yan, Mingzi Gao, Junlin Zhou, Liqin Zhao
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    Siyer Roohani, Yasemin Alberti, Maximilian Mirwald, Felix Ehret, Carmen Stromberger, Soleiman Fabris Roohani, Katja Bender, Anne Flörcken, Sven Märdian, Daniel Zips, David Kaul, Manish Charan
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    Adil Aziz Khan, Sana Ahuja, Dipanker Singh Mankotia, Sufian Zaheer
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    V. Matthijs, R. Beckers, C. Vanden Broecke, F. Dedeurwaerdere, J. Van Dorpe, D. Vanhauwaert, G. Hallaert
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    Nuri Kaydıhan, Gözde Yazıcı, Petek Erpolat, Serra Kamer, Burak Erdemci, Emine Canyılmaz, Beste Melek Atasoy, Dicle Aslan, Ela Delikgöz Soykut, Enis Özyar, Fatih Demircioğlu, Fazilet Öner Dinçbaş, Meltem Kirli Bolukbas, Ramazan Aksu, Selvi Tabak Dinçer, Ya
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    Marine Lottin, Alexandre Escande, Luc Bauchet, Marie Albert-Thananayagam, Maël Barthoulot, Matthieu Peyre, Mathieu Boone, Sonia Zouaoui, Jacques Guyotat, Guillaume Penchet, Johan Pallud, Henry Dufour, Evelyne Emery, Michel Lefranc, Sébastien Freppel, Houm
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    Cureus.2021;[Epub]     CrossRef
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Interim Tumor Progression and Volumetric Changes of Surgical Cavities during the Surgery-to-Radiotherapy Interval in Anaplastic Gliomas: Implications for Additional Pre-radiotherapy Magnetic Resonance Imaging
Chan Woo Wee, Il Han Kim, Chul-Kee Park, Jin Wook Kim
Cancer Res Treat. 2020;52(2):524-529.   Published online October 31, 2019
DOI: https://doi.org/10.4143/crt.2019.520
AbstractAbstract PDFPubReaderePub
Purpose
This study was designed to investigate the incidence of interim disease progression (IPD) and volumetric changes of the surgical cavity (SC) during the surgery-to-radiotherapy interval (SRI), and eventually assess the value of magnetic resonance imaging (MRI) at the time of radiotherapy (RT) planning in newly diagnosed anaplastic gliomas.
Materials and Methods
Among 195 anaplastic glioma patients who underwent RT, 121 were evaluable with two separate MRIs during SRI. The presence of IPD was determined using the updated Response Assessment in Neuro-Oncology size criteria. In 84 patients who underwent surgical resection, each SC was contoured by a radiation oncologist and the volumetric changes of the SCs were calculated between the two separate MRIs. Daily rate of change in the SC volume was calculated assuming an exponential and linear change.
Results
Five of 121 patients (4.13%) demonstrated IPD during SRI, and the incidence was significantly higher in patients undergoing biopsy (vs. surgical resection, 12.9% vs. 1.1%, p=0.015) and in patients with remnant contrast-enhancing tumor after surgery (15.8 vs. 2.0%, p=0.027). The mean daily rate of absolute change in SC was 1.06% (95% confidence interval [CI], 0.89 to 1.23) and 0.89% (95% CI, 0.77 to 1.02) according to the exponential and linear model, respectively. The expected mean volumetric change at 2 weeks were 16.64% (95% CI, 13.77 to 19.52) and 12.51% (95% CI, 10.77 to 14.26), respectively.
Conclusion
IPD during the SRI is rare in surgically resected anaplastic gliomas. However, pre-RT MRI is essential for accurate RT-target delineation and disease evaluation for patients initiating RT beyond postoperative 2 weeks and undergoing biopsy, respectively.

Citations

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    Strahlentherapie und Onkologie.2022; 198(3): 282.     CrossRef
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    Jun Liu, Xiaodong Li, Xueping Leng, Bo Zhong, Yanhong Liu, Liang Liu, Mohammad Farukh Hashmi
    Contrast Media & Molecular Imaging.2022;[Epub]     CrossRef
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Clinical Outcomes of Postoperative Radiotherapy Following Radical Prostatectomy in Patients with Localized Prostate Cancer: A Multicenter Retrospective Study (KROG 18-01) of a Korean Population
Sung Uk Lee, Kwan Ho Cho, Won Park, Won Kyung Cho, Jae-Sung Kim, Chan Woo Wee, Young Seok Kim, Jin Ho Kim, Taek-Keun Nam, Jaeho Cho, Song Mi Jeong, Youngkyong Kim, Su Jung Shim, Youngmin Choi, Jun-Sang Kim
Cancer Res Treat. 2020;52(1):167-180.   Published online June 25, 2019
DOI: https://doi.org/10.4143/crt.2019.126
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Purpose
The purpose of this study was to investigate the clinical outcomes of postoperative radiotherapy (PORT) patients who underwent radical prostatectomy for localized prostate cancer.
Materials and Methods
Localized prostate cancer patients who received PORT after radical prostatectomy between 2001 and 2012 were identified retrospectively in a multi-institutional database. In total, 1,117 patients in 19 institutions were included. Biochemical failure after PORT was defined as prostate-specific antigen (PSA) ≥ nadir+2 after PORT or initiation of androgen deprivation therapy (ADT) for increasing PSA regardless of its value.
Results
Ten-year biochemical failure-free survival, clinical failure-free survival, distant metastasisfree survival, overall survival (OS), and cause-specific survival were 60.5%, 76.2%, 84.4%, 91.1%, and 96.6%, respectively, at a median of 84 months after PORT. Pre-PORT PSA ≤ 0.5 ng/ml and Gleason’s score ≤ 7 predicted favorable clinical outcomes, with 10-year OS rates of 92.5% and 94.1%, respectively. The 10-year OS rate was 82.7% for patients with a PSA > 1.0 ng/mL and 86.0% for patients with a Gleason score of 8-10. The addition of longterm ADT (≥ 12 months) to PORT improved OS, particularly in those with a Gleason score of 8-10 or ≥ T3b.
Conclusion
Clinical outcomes of PORT in a Korean prostate cancer population were very similar to those in Western countries. Lower Gleason score and serum PSA level at the time of PORT were significantly associated with favorable outcomes. Addition of long-term ADT (≥ 12 months) to PORT should be considered, particularly in unfavorable risk patients with Gleason scores of 8-10 or ≥ T3b.

Citations

Citations to this article as recorded by  
  • Optimal Definition of Biochemical Recurrence in Patients Who Receive Salvage Radiotherapy Following Radical Prostatectomy for Prostate Cancer
    Sung Uk Lee, Jae-Sung Kim, Young Seok Kim, Jaeho Cho, Seo Hee Choi, Taek-Keun Nam, Song Mi Jeong, Youngkyong Kim, Youngmin Choi, Dong Eun Lee, Won Park, Kwan Ho Cho
    Cancer Research and Treatment.2022; 54(4): 1191.     CrossRef
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    Satish Chandra Mishra
    Journal of Medical Ethics.2021; 47(3): 152.     CrossRef
  • Clinical Outcome of Salvage Radiotherapy for Locoregional Clinical Recurrence After Radical Prostatectomy
    Sung Uk Lee, Kwan Ho Cho, Jin Ho Kim, Young Seok Kim, Taek-Keun Nam, Jae-Sung Kim, Jaeho Cho, Seo Hee Choi, Su Jung Shim, Jin Hee Kim, Ah Ram Chang
    Technology in Cancer Research & Treatment.2021;[Epub]     CrossRef
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  • 209 Download
  • 3 Web of Science
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Comparison of Breast Conserving Surgery Followed by Radiation Therapy with Mastectomy Alone for Pathologic N1 Breast Cancer Patients in the Era of Anthracycline Plus Taxane-Based Chemotherapy: A Multicenter Retrospective Study (KROG 1418)
Gyu Sang Yoo, Won Park, Jeong Il Yu, Doo Ho Choi, Yeon-Joo Kim, Kyung Hwan Shin, Chan Woo Wee, Kyubo Kim, Kyung Ran Park, Yong Bae Kim, Sung Ja Ahn, Jong Hoon Lee, Jin Hee Kim, Mison Chun, Hyung-Sik Lee, Jung Soo Kim, Jihye Cha
Cancer Res Treat. 2019;51(3):1041-1051.   Published online November 1, 2018
DOI: https://doi.org/10.4143/crt.2018.424
AbstractAbstract PDFPubReaderePub
Purpose
We compared the oncologic outcomes of breast-conserving surgery plus radiation therapy (BCS+RT) and modified radical mastectomy (MRM) under anthracycline plus taxane-based (AT) regimens and investigated the role of adjuvant radiation therapy (RT) in patients with pathologic N1 (pN1) breast cancer treated by mastectomy.
Materials and Methods
We retrospectively reviewed the medical records of 2,011 patients with pN1 breast cancer who underwent BCS+RT or MRM alone at 12 institutions between January 2006 and December 2010. Two-to-one propensity score matching was performed for balances in variables between the groups.
Results
The median follow-up duration for the total cohort was 69 months (range, 1 to 114 months). After propensity score matching, 1,074 patients (676 in the BCS+RT group and 398 in the MRM-alone group) were analyzed finally. The overall survival, disease-free survival, locoregional failure-free survival, and regional failure-free survival (RFFS) curves of the BCS+RT group vs. MRM-alone group were not significantly different. The subgroup analysis revealed that in the group with both lymphovascular invasion (LVI) and histologic grade (HG) III, the BCS+RT showed significantly superior RFFS (p=0.008). Lymphedema (p=0.007) and radiation pneumonitis (p=0.031) occurred more frequently in the BCS+RT group than in the MRM-alone group, significantly.
Conclusion
There are no differences in oncologic outcomes between BCS+RT and MRM-alone groups under the AT chemotherapy regimens for pN1 breast cancer. However, BCS+RT group showed superior RFFS to MRM-alone group in the patients with LVI and HG III. Adjuvant RT might be considerable for pN1 breast cancer patients with LVI and HG III.

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  • 21-gene recurrence score in predicting the outcome of postoperative radiotherapy in T1-2N1 luminal breast cancer after breast-conserving surgery
    Shang-Jin Xie, Run-Jie Wang, San-Gang Wu, Fu-Xing Zhang
    The Breast.2024; 74: 103679.     CrossRef
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    Mulugeta S. Goangul, Daniel B. Erenso, Ying Gao, Li Chen, Kwame O. Eshun, Gisela Alvarez, Horace T. Crogman
    Radiation.2024; 4(1): 85.     CrossRef
  • Overall survival after mastectomy versus breast-conserving surgery with adjuvant radiotherapy for early-stage breast cancer: meta-analysis
    Kiran K Rajan, Katherine Fairhurst, Beth Birkbeck, Shonnelly Novintan, Rebecca Wilson, Jelena Savović, Chris Holcombe, Shelley Potter
    BJS Open.2024;[Epub]     CrossRef
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    Yu Zhang, Fuxiu Ye, Yun Teng, Jin Zheng, Chunlu Li, Ruilan Ma, Haichen Zhang
    Frontiers in Oncology.2023;[Epub]     CrossRef
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    Gabriel De la Cruz Ku, Manish Karamchandani, Diego Chambergo-Michilot, Alexis R. Narvaez-Rojas, Michael Jonczyk, Fortunato S. Príncipe-Meneses, David Posawatz, Salvatore Nardello, Abhishek Chatterjee
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    Tae Hoon Lee, Ji Hyun Chang, Bum-Sup Jang, Jae Sik Kim, Tae Hyun Kim, Won Park, Yong Bae Kim, Su Ssan Kim, Wonshik Han, Han-Byoel Lee, Kyung Hwan Shin
    BMC Cancer.2022;[Epub]     CrossRef
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    Guang-Yi Sun, Ge Wen, Yu-Jing Zhang, Yu Tang, Hao Jing, Hui Fang, Jian-Yang Wang, Jiang-Hu Zhang, Xu-Ran Zhao, Si-Ye Chen, Yong-Wen Song, Jing Jin, Yue-Ping Liu, Yuan Tang, Shu-Nan Qi, Ning Li, Bo Chen, Ning-Ning Lu, Ye-Xiong Li, Shu-Lian Wang
    Frontiers in Oncology.2022;[Epub]     CrossRef
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    Endris Muhammed, Li Chen, Ying Gao, Daniel Erenso
    Scientific Reports.2019;[Epub]     CrossRef
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Prognostic Impact of Elective Supraclavicular Nodal Irradiation for Patients with N1 Breast Cancer after Lumpectomy and Anthracycline Plus Taxane-Based Chemotherapy (KROG 1418): A Multicenter Case-Controlled Study
Haeyoung Kim, Won Park, Jeong Il Yu, Doo Ho Choi, Seung Jae Huh, Yeon-Joo Kim, Eun Sook Lee, Keun Seok Lee, Han-Sung Kang, In Hae Park, Kyung Hwan Shin, Chan Woo Wee, Kyubo Kim, Kyung Ran Park, Yong Bae Kim, Sung Ja Ahn, Jong Hoon Lee, Jin Hee Kim, Mison Chun, Hyung-Sik Lee, Jung Soo Kim, Jihye Cha
Cancer Res Treat. 2017;49(4):970-980.   Published online January 4, 2017
DOI: https://doi.org/10.4143/crt.2016.382
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Purpose
This study was conducted to evaluate the impact of supraclavicular lymph node radiotherapy (SCNRT) on N1 breast cancer patients receiving post-lumpectomy whole-breast irradiation (WBI) and anthracycline plus taxane-based (AT) chemotherapy.
Materials and Methods
We performed a case-control analysis to compare the outcomes of WBI and WBI plus SCNRT (WBI+SCNRT). Among 1,147 patients with N1 breast cancer who received post-lumpectomy radiotherapy and AT-based chemotherapy in 12 hospitals, 542 were selected after propensity score matching. Patterns of failure, disease-free survival (DFS), distant metastasis-free survival (DMFS), and treatment-related toxicity were compared between groups.
Results
A total of 41 patients (7.6%) were found to have recurrence. Supraclavicular lymph node (SCN) failure was detected in three patients, two in WBI and one in WBI+SCNRT. All SCN failures were found simultaneously with distant metastasis. There was no significant difference in patterns of failure or survival between groups. The 5-year DFS and DMFS for patients with WBI and WBI+SCNRT were 94.4% versus 92.6% (p=0.50) and 95.1% versus 94.5% (p=0.99), respectively. The rates of lymphedema and radiation pneumonitis were significantly higher in the WBI+SCNRT than in the WBI.
Conclusion
We did not find a benefit of SCNRT for N1 breast cancer patients receiving AT-based chemotherapy.

Citations

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  • Patient-Reported Outcomes Between Whole-Breast Plus Regional Irradiation and Whole-Breast Irradiation Only in pN1 Breast Cancer After Breast-Conserving Surgery and Taxane-Based Chemotherapy: A Randomized Phase 3 Clinical Trial (KROG 17-01)
    Nalee Kim, Won Park, Haeyoung Kim, Won Kyung Cho, Sung Ja Ahn, Mi Young Kim, Shin-Hyung Park, Ik Jae Lee, Inbong Ha, Jin Hee Kim, Tae Hyun Kim, Kyu Chan Lee, Hyung-Sik Lee, Tae Gyu Kim, Kyung Hwan Shin, Jong Hoon Lee, Jinhong Jung, Oyeon Cho, Yong Bae Kim
    International Journal of Radiation Oncology*Biology*Physics.2024;[Epub]     CrossRef
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    Wei-Xiang Qi, Lu Cao, Cheng Xu, Gang Cai, Jiayi Chen
    Frontiers in Oncology.2023;[Epub]     CrossRef
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    Tae Hoon Lee, Ji Hyun Chang, Bum-Sup Jang, Jae Sik Kim, Tae Hyun Kim, Won Park, Yong Bae Kim, Su Ssan Kim, Wonshik Han, Han-Byoel Lee, Kyung Hwan Shin
    BMC Cancer.2022;[Epub]     CrossRef
  • What Is High-risk Breast Cancer With Pathologically Negative Lymph Nodes for Regional Recurrence?
    Sang-Won Kim, Won Kyung Cho, Doo Ho Choi, Haeyoung Kim, Oyeon Cho, Won Park, Mison Chun
    International Journal of Radiation Oncology*Biology*Physics.2021; 111(4): 992.     CrossRef
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    Shin-Hyung Park, Jae-Chul Kim
    Radiation Oncology Journal.2020; 38(1): 44.     CrossRef
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    Fabio Corsi, Luca Sorrentino, Sara Albasini, Daniela Bossi, Carlo Morasso, Laura Villani, Marta Truffi
    Medicine.2020; 99(35): e21721.     CrossRef
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    Xuran Zhao, Yu Tang, Shulian Wang, Yong Yang, Hui Fang, Jianyang Wang, Hao Jing, Jianghu Zhang, Guangyi Sun, Siye Chen, Jing Jin, Yongwen Song, Yueping Liu, Bo Chen, Shunan Qi, Ning Li, Yuan Tang, Ningning Lu, Hua Ren, Yexiong Li
    Radiation Oncology.2020;[Epub]     CrossRef
  • Comparison of Dose Distribution in Regional Lymph Nodes in Whole-Breast Radiotherapy vs. Whole-Breast Plus Regional Lymph Node Irradiation: An In Silico Planning Study in Participating Institutions of the Phase III Randomized Trial (KROG 1701)
    Haeyoung Kim, Heejung Kim, Won Park, Jong Yun Baek, Sung Ja Ahn, Mi Young Kim, Shin-Hyung Park, Ik Jae Lee, Inbong Ha, Jin Hee Kim, Tae Hyun Kim, Kyu Chan Lee, Hyung-Sik Lee, Tae Gyu Kim, Jin Ho Kim, Jong Hoon Lee, Jinhong Jung, Oyeon Cho, Jee Suk Chang,
    Cancers.2020; 12(11): 3261.     CrossRef
  • Clinical Significance of Lymph-Node Ratio in Determining Supraclavicular Lymph-Node Radiation Therapy in pN1 Breast Cancer Patients Who Received Breast-Conserving Treatment (KROG 14-18): A Multicenter Study
    Jaeho Kim, Won Park, Jin Kim, Doo Choi, Yeon-Joo Kim, Eun Lee, Kyung Shin, Jin Kim, Kyubo Kim, Yong Kim, Sung-Ja Ahn, Jong Lee, Mison Chun, Hyung-Sik Lee, Jung Kim, Jihye Cha
    Cancers.2019; 11(5): 680.     CrossRef
  • Breast Conservation Therapy Versus Mastectomy in Patients with T1-2N1 Triple-Negative Breast Cancer: Pooled Analysis of KROG 14-18 and 14-23
    Kyubo Kim, Hae Jin Park, Kyung Hwan Shin, Jin Ho Kim, Doo Ho Choi, Won Park, Seung Do Ahn, Su Ssan Kim, Dae Yong Kim, Tae Hyun Kim, Jin Hee Kim, Jiyoung Kim
    Cancer Research and Treatment.2018; 50(4): 1316.     CrossRef
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Postmastectomy Radiotherapy in Patients with pT1-2N1 Breast Cancer Treated with Taxane-Based Chemotherapy: A Retrospective Multicenter Analysis (KROG 1418)
Yeon-Joo Kim, Won Park, Boram Ha, Boram Park, Jungnam Joo, Tae Hyun Kim, In Hae Park, Keun Seok Lee, Eun Sook Lee, Kyung Hwan Shin, Haeyoung Kim, Jeong Il Yu, Doo Ho Choi, Seung Jae Huh, Chan Woo Wee, Kyubo Kim, Kyung Ran Park, Yong Bae Kim, Sung Ja Ahn, Jong Hoon Lee, Jin Hee Kim, Mison Chun, Hyung-Sik Lee, Jung Soo Kim, Jihye Cha
Cancer Res Treat. 2017;49(4):927-936.   Published online December 26, 2016
DOI: https://doi.org/10.4143/crt.2016.508
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Purpose
The purpose of this study was to evaluate the impact of postmastectomy radiotherapy (PMRT) on loco-regional recurrence-free survival (LRRFS), disease-free survival (DFS), and overall survival (OS) in pT1-2N1 patients treated with taxane-based chemotherapy.
Materials and Methods
We retrospectively reviewed the medical data of pathological N1 patients who were treated with modified radical mastectomy and adjuvant taxane-based chemotherapy in 12 hospitals between January 2006 and December 2010.
Results
We identified 714 consecutive patients. The median follow-up duration was 69 months (range, 1 to 114 months) and the 5-year LRRFS, DFS, and OS rates were 97%, 94%, and 98%, respectively, in patients who received PMRT (PMRT [+]). The corresponding figures were 96%, 90%, and 96%, respectively, in patients who did not receive PMRT (PMRT [–]). PMRT had no significant impact on survival. Upon multivariable analysis, only the histological grade (HG) was statistically significant as a prognostic factor for LRRFS and DFS. In a subgroup analysis of HG 3 patients, PMRT (+) showed better DFS (p=0.081).
Conclusion
PMRT had no significant impact on LRRFS, DFS, or OS in pT1-2N1 patients treated with taxane-based chemotherapy. PMRT showed a marginal benefit for DFS in HG 3 patients. Randomized studies are needed to confirm the benefit of PMRT in high risk patients, such as those with HG 3.

Citations

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  • Does Post-Mastectomy Radiotherapy Confer Survival Benefits on Patients With 1-3 Clinically Positive Lymph Nodes Rendered Pathologically Negative After Neoadjuvant Systemic Chemotherapy: Consensus from A Pooled Analysis?
    Munaser Alamoodi
    European Journal of Breast Health.2024; 20(2): 81.     CrossRef
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    Lin-Yu Xia, Wei-Yun Xu, Yan Zhao, Sudeep Gupta
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    Nalee Kim, Won Park, Won Kyung Cho, Hae Young Kim, Doo Ho Choi, Seok Jin Nam, Seok Won Kim, Jeong Eon Lee, Jonghan Yu, Byung Joo Chae, Se Kyung Lee, Jai Min Ryu, Goo-Hyun Mun, Jai-Kyong Pyon, Byung-Joon Jeon
    The Breast.2022; 66: 54.     CrossRef
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    Majd Kayali, Joseph Abi Jaoude, Arafat Tfayli, Nagi El Saghir, Philip Poortmans, Youssef H. Zeidan
    Critical Reviews in Oncology/Hematology.2020; 147: 102880.     CrossRef
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    Jinli Wei, Yizhou Jiang, Zhimin Shao
    The Breast.2020; 51: 40.     CrossRef
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    Lei Zhang, Ru Tang, Jia-Peng Deng, Wen-Wen Zhang, Huan-Xin Lin, San-Gang Wu, Zhen-Yu He
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  • Comparison of Breast Conserving Surgery Followed by Radiation Therapy with Mastectomy Alone for Pathologic N1 Breast Cancer Patients in the Era of Anthracycline Plus Taxane-Based Chemotherapy: A Multicenter Retrospective Study (KROG 1418)
    Gyu Sang Yoo, Won Park, Jeong Il Yu, Doo Ho Choi, Yeon-Joo Kim, Kyung Hwan Shin, Chan Woo Wee, Kyubo Kim, Kyung Ran Park, Yong Bae Kim, Sung Ja Ahn, Jong Hoon Lee, Jin Hee Kim, Mison Chun, Hyung-Sik Lee, Jung Soo Kim, Jihye Cha
    Cancer Research and Treatment.2019; 51(3): 1041.     CrossRef
  • Effect of postmastectomy radiotherapy on triple-negative breast cancer with T1-2 and 1-3 positive axillary lymph nodes: a population-based study using the SEER 18 database
    Jie Zhang, Xiao-Xiao Wang, Jun-Yu Lian, Chuan-Gui Song
    Oncotarget.2019; 10(50): 5245.     CrossRef
  • Local and regional recurrence following mastectomy in breast cancer patients with 1–3 positive nodes: implications for postmastectomy radiotherapy volume
    Shin-Hyung Park, Jeeyeon Lee, Jeong Eun Lee, Min Kyu Kang, Mi Young Kim, Ho Yong Park, Jin Hyang Jung, Yee Soo Chae, Soo Jung Lee, Jae-Chul Kim
    Radiation Oncology Journal.2018; 36(4): 285.     CrossRef
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