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6 "Jonghan Yu"
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Breast cancer
Endoxifen Concentration Is Associated with Recurrence-Free Survival in Hormone-Sensitive Breast Cancer Patients
Beomki Lee, Seok Jin Nam, Seok Won Kim, Jonghan Yu, Byung-Joo Chae, Se Kyung Lee, Jai Min Ryu, Jeong Eon Lee, Soo-Youn Lee
Cancer Res Treat. 2025;57(1):140-149.   Published online June 18, 2024
DOI: https://doi.org/10.4143/crt.2023.1285
AbstractAbstract PDFPubReaderePub
Purpose
The metabolism of tamoxifen is influenced by various cytochrome p450 enzymes, including CYP2D6 and CYP2C19, leading to variations in the levels of endoxifen, even with the same tamoxifen dose. However, the clinical significance of endoxifen for the prognosis of breast cancer patients remains controversial. This study aimed to elucidate the relevance of endoxifen level to recurrence-free survival censored with tamoxifen discontinuation (RFSt), representing the RFS for tamoxifen itself, of breast cancer patients and determine a suitable cutoff for prognostication.
Materials and Methods
The study included 478 breast cancer patients. Tamoxifen and its metabolites, including endoxifen, were measured using liquid chromatography-tandem mass spectrometry. An optimal cutoff was determined with maximally selected rank statistics. Survival analysis and Cox regression were conducted based on this cutoff.
Results
An endoxifen level of 21.00 ng/mL was the optimal cutoff for prognostication. Survival analysis revealed a statistically significant difference in RFSt between the low endoxifen group (≤ 21.00 ng/mL) and the high endoxifen group (> 21.00 ng/mL) (log-rank test, p=0.032). The 10-year probability of RFSt was 83.2% (95% confidence interval [CI], 77.0 to 89.9) and 88.3% (95% CI, 83.3 to 93.5) in the low and high endoxifen groups, respectively. Multivariable Cox proportional hazards regression indicated endoxifen concentration as a significant factor associated with prognosis.
Conclusion
Endoxifen could serve as a marker for appropriate tamoxifen treatment with a cutoff of 21.00 ng/mL. Based on this cutoff, therapeutic drug monitoring would benefit patients displaying suboptimal endoxifen concentrations.
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Impact of Social Support during Diagnosis and Treatment on Disease Progression in Young Patients with Breast Cancer: A Prospective Cohort Study
Danbee Kang, Seri Park, Hyo Jung Kim, Seok Won Kim, Jeong Eon Lee, Jonghan Yu, Se Kyung Lee, Ji-Yeon Kim, Seok Jin Nam, Juhee Cho, Yeon Hee Park
Cancer Res Treat. 2024;56(1):125-133.   Published online September 4, 2023
DOI: https://doi.org/10.4143/crt.2023.673
AbstractAbstract PDFPubReaderePub
Purpose
We evaluated the association between changes in social support after cancer treatment and recurrence-free survival (RFS) in such patients using a prospective cohort study.
Materials and Methods
Data were obtained from a prospective cohort study (NCT03131089) conducted at Samsung Medical Center (2013-2021). The primary outcome measure was RFS. Social support was measured using the social and family well-being (SFWB) domain of the Functional Assessment of Cancer Therapy-General. We calculated the changes in SFWB scores before and during treatment and the hazard ratio for RFS by comparing such changes.
Results
The mean±standard deviation (SD) age of the patients was 35±3.9 years, and 71.5% and 64.8% of the patients were married and had children, respectively. The mean±SD SFWB score at baseline was 20.5±5.0 out of 26. After cancer treatment, 35.9%, 10.3%, and 53.8% of the participants had increasing, unchanged, and decreasing SFWB scores, respectively. The decreasing SFWB score group had a higher risk of mortality or recurrence than the increasing group. Risk factors for the decreasing score were the presence of children during diagnosis.
Conclusion
In this cohort, changes in social support after treatment were associated with RFS in young patients with breast cancer. Health professionals should develop family interventions to help them receive proper social support.
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Real World Evidence of Neoadjuvant Docetaxel/Carboplatin/Trastuzumab/Pertuzumab (TCHP) in Patients with HER2-Positive Early or Locally Advanced Breast Cancer: A Single-Institutional Clinical Experience
Ji-Yeon Kim, Seok Jin Nam, Jeong Eon Lee, Jonghan Yu, Byung Joo Chae, Se Kyung Lee, Jai Min Ryu, Jin Seok Ahn, Young-Hyuck Im, Seok Won Kim, Yeon Hee Park
Cancer Res Treat. 2022;54(4):1091-1098.   Published online January 10, 2022
DOI: https://doi.org/10.4143/crt.2021.901
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Purpose
Docetaxel/carboplatin/trastuzumab/pertuzumab (TCHP) regimen is frequently used to treat early and locally advanced human epidermal growth factor receptor 2 (HER2)–positive breast cancer (BC) in neoadjuvant setting. However, large-scaled real-world evidence did not exist.
Materials and Methods
We retrospectively reviewed medical records of patients with early or locally advanced HER2-positive BC who underwent neoadjuvant TCHP followed by curative surgery at Samsung Medical Center between January 2016 and August 2020.
Results
Of 447 patients, 316 (70.7%) received breast-conserving surgery and 131 (29.3%) received total mastectomy. In terms of neoadjuvant chemotherapy response, pathologic complete response (pCR) and residual cancer burden (RCB) score were analyzed. The rate of pCR was 64% a class of RCB 0 was observed in 65% of cases, RCB class I in 12%, RCB class II in 14%, and RCB class III in 2%. The 3-year event-free survival rate was 90.6%, BC with pCR occurred in 92.8%, and BC with non-pCR in 86.3% (p=0.016). In terms of distant metastasis, the 3-year distant recurrence-free survival rate was 93.5%; BC with pCR occurred in 95.9% and BC with non-pCR in 89.2% (p=0.013). Mucositis (85.2%), pain (83.2%), and diarrhea (70.5%) were the most common non-hematologic adverse events. In terms of hematologic adverse events, anemia (89.9%) was the most commonly observed adverse events followed by thrombocytopenia (29.8%).
Conclusion
Neoadjuvant TCHP therapy had a pCR rate of 64% and a 3-year event-free survival of 90% in real world experience. In terms of toxicity profile, anemia was frequently observed and adequate management including occasional transfusion was required.

Citations

Citations to this article as recorded by  
  • De-escalation of neoadjuvant taxane and carboplatin therapy in HER2-positive breast cancer with dual HER2 blockade: a multicenter real-world experience in China
    Song Wu, Li Bian, Haibo Wang, Shaohua Zhang, Tao Wang, Zhigang Yu, Jianbin Li, Feng Li, Kun Wang, Zefei Jiang
    World Journal of Surgical Oncology.2024;[Epub]     CrossRef
  • Distinct ER and PR expression patterns significantly affect the clinical outcomes of early HER2-positive breast cancer: A real-world analysis of 871 patients treated with neoadjuvant therapy
    Haizhu Chen, Xiujuan Gui, Ziwei Zhou, Fengxi Su, Chang Gong, Shunrong Li, Wei Wu, Nanyan Rao, Qiang Liu, Herui Yao
    The Breast.2024; 75: 103733.     CrossRef
  • Impact of adding pertuzumab to trastuzumab plus chemotherapy in neoadjuvant treatment of HER2 positive breast cancer patients: a multicenter real-life HER2PATH study
    Ahmet Bilici, Omer Fatih Olmez, Muhammed Ali Kaplan, Berna Oksuzoglu, Ahmet Sezer, Nuri Karadurmus, Erdem Cubukcu, Mehmet Ali Nahit Sendur, Sercan Aksoy, Dilek Erdem, Gul Basaran, Burcu Cakar, Abdallah T. M. Shbair, Cagatay Arslan, Ahmet Taner Sumbul, Sem
    Acta Oncologica.2023; 62(4): 381.     CrossRef
  • Pathologic Complete Response Achieved in Early-Stage HER2-Positive Breast Cancer After Neoadjuvant Therapy With Trastuzumab and Chemotherapy vs. Trastuzumab, Chemotherapy, and Pertuzumab: A Systematic Review and Meta-Analysis of Clinical Trials
    Faizan Fazal, Muhammad Nauman Bashir, Maham Leeza Adil, Usama Tanveer, Mansoor Ahmed, Taha Zahid Chaudhry, Ali Ahmad Ijaz, Muhammad Haider
    Cureus.2023;[Epub]     CrossRef
  • Trends of axillary surgery in breast cancer patients with axillary lymph node metastasis: a comprehensive single-center retrospective study
    Yeon Jin Kim, Hye Jin Kim, Soo Yeon Chung, Se Kyung Lee, Byung Joo Chae, Jonghan Yu, Jeong Eon Lee, Seok Won Kim, Seok Jin Nam, Jai Min Ryu
    Annals of Surgical Treatment and Research.2023; 105(1): 10.     CrossRef
  • Anthracyclines versus No Anthracyclines in the Neoadjuvant Strategy for HER2+ Breast Cancer: Real-World Evidence
    Inês Soares de Pinho, Paulo Luz, Lucy Alves, Raquel Lopes-Brás, Vanessa Patel, Miguel Esperança-Martins, Lisa Gonçalves, Ritas Freitas, Diana Simão, Maria Roldán Galnares, Isabel Fernandes, Silvia Artacho Criado, Salvador Gamez Casado, Jose Baena Cañada,
    Clinical Drug Investigation.2023; 43(9): 691.     CrossRef
  • Benefit of postoperative regional nodal irradiation in patients receiving preoperative systemic therapy with docetaxel/carboplatin/trastuzumab/pertuzumab for HER2-positive breast cancer
    Nalee Kim, Ji-Yeon Kim, Won Park, Won Kyung Cho, Tae Gyu Kim, Young-Hyuck Im, Jin Seok Ahn, Jeong Eon Lee, Seok Jin Nam, Seok Won Kim, Jonghan Yu, Byung Joo Chae, Sei Kyung Lee, Jai-Min Ryu, Yeon Hee Park, Haeyoung Kim
    The Breast.2023; 72: 103594.     CrossRef
  • Response Rate and Safety of a Neoadjuvant Pertuzumab, Atezolizumab, Docetaxel, and Trastuzumab Regimen for Patients With ERBB2-Positive Stage II/III Breast Cancer
    Hee Kyung Ahn, Sung Hoon Sim, Koung Jin Suh, Min Hwan Kim, Jae Ho Jeong, Ji-Yeon Kim, Dae-Won Lee, Jin-Hee Ahn, Heejung Chae, Kyung-Hun Lee, Jee Hyun Kim, Keun Seok Lee, Joo Hyuk Sohn, Yoon-La Choi, Seock-Ah Im, Kyung Hae Jung, Yeon Hee Park
    JAMA Oncology.2022; 8(9): 1271.     CrossRef
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Clinicopathological Characterization of Double Heterozygosity for BRCA1 and BRCA2 Variants in Korean Breast Cancer Patients
Yoon Ju Bang, Won Kyung Kwon, Seok Jin Nam, Seok Won Kim, Byung-Joo Chae, Se Kyung Lee, Jai Min Ryu, Jong-Won Kim, Jonghan Yu, Jeong Eon Lee
Cancer Res Treat. 2022;54(3):827-833.   Published online October 13, 2021
DOI: https://doi.org/10.4143/crt.2021.791
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Purpose
Double heterozygosity (DH) for BRCA1 and BRCA2 variant is very rare with only a few cases reported, and most those in Caucasians. In this article, we present seven unrelated cases of DH for BRCA1/2 identified from a single institution in Korea, and describe the characteristics and phenotype of DH individuals compared to those with a single BRCA variant.
Materials and Methods
This study included 27,678 patients diagnosed with breast cancer and surgically treated at Samsung Medical Center (SMC) between January 2008 and June 2020. In total, 4,215 high-risk breast cancer patients were tested for the BRCA1/2 genes, and electronic medical records from 456 cases with pathogenic/likely pathogenic variants (PVs/LPVs) were reviewed.
Results
A younger mean age at diagnosis was associated with DH than a single variant of BRCA1/2. More triple-negative breast cancer (TNBC) and higher nuclear and histologic grade cancer occurred with DH than BRCA2 variant. All 7 cases of DH were unrelated, and their mutation combinations were different. There were no Ashkenazi founder variants detected.
Conclusion
We suggest that patients with DH for BRCA1/2 variants develop breast cancer at a younger age, but the histopathologic features are similar to those of BRCA1.

Citations

Citations to this article as recorded by  
  • Multi-locus inherited neoplasia alleles syndromes in cancer: implications for clinical practice
    Jeanette Yuen, Siqin Zhou, Rebecca Caeser, Mallika Venkatramani, Diana Nur Bte Ishak, Shao-Tzu Li, Zewen Zhang, Jianbang Chiang, Sock Hoai Chan, Joanne Ngeow
    European Journal of Human Genetics.2025;[Epub]     CrossRef
  • Cost-effectiveness of talazoparib for patients with germline BRCA1/2 mutated HER2-negative advanced breast cancer in China and the US
    Junjie Pan, Ning Ren, Lanqi Ren, YiBei Yang, Qiaoping Xu
    Scientific Reports.2024;[Epub]     CrossRef
  • Characteristics of Chinese breast cancer patients with double heterozygosity for BRCA1 and BRCA2 germline pathogenic variants
    Song Wen, Meng Zhang, Jiuan Chen, Li Hu, Jie Sun, Lu Yao, Ye Xu, Juan Zhang, Yuntao Xie
    Breast Cancer Research and Treatment.2024; 208(1): 155.     CrossRef
  • Discovery of BRCA1/BRCA2 founder variants by haplotype analysis
    Won Kyung Kwon, Hyeok-Jae Jang, Jeong Eon Lee, Yeon Hee Park, Jai Min Ryu, Jonghan Yu, Ja-Hyun Jang, Jong-Won Kim
    Cancer Genetics.2022; 266-267: 19.     CrossRef
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Validation of Korean Version of the COmprehensive Score for financial Toxicity (COST) Among Breast Cancer Survivors
Sungkeun Shim, Danbee Kang, Nayeon Kim, Gayeon Han, Jihyun Lim, Hyunsoo Kim, Jeonghyun Park, Mankyung Lee, Jeong Eon Lee, Seok Won Kim, Jonghan Yu, Byung Joo Chae, Jai Min Ryu, Seok Jin Nam, Se Kyung Lee, Juhee Cho
Cancer Res Treat. 2022;54(3):834-841.   Published online October 13, 2021
DOI: https://doi.org/10.4143/crt.2021.784
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Purpose
Little is known about the impact of financial toxicity in disease-free breast cancer survivors. We aim to validate the COmprehensive Score for financial Toxicity in Korean (COST-K) and evaluate financial toxicity among disease-free breast cancer survivors.
Materials and Methods
We conducted linguistic validation following a standardized methodology recommended by Functional Assessment of Chronic Illness Therapy multilingual translation (FACITtrans). For psychometric validation, we conducted a cross-sectional survey with 4,297 disease-free breast cancer survivors at a tertiary hospital in Seoul, Korea between November 2018 and April 2019. Survivors were asked to complete the COST-K and European Organization for Research and Treatment of Cancer Quality of Life Core 30 (EORTC QLQ-C30) questionnaires. The test-retest reliability, internal consistency, and validity of the COST-K were assessed using standard scale construction techniques.
Results
The COST-K demonstrated good internal consistency, with a Cronbach’s α of 0.81. The test-retest analysis revealed an intraclass correlation coefficient of 0.78. The COST-K had moderate correlation (r=–0.60) with the financial difficulty item of the EORTC QLQ-C30 and week correlation with the items on acute and chronic symptom burdens (nausea/vomiting, –0.18; constipation, –0.14; diarrhea, –0.14), showing good convergent and divergent validity. The median COST-K was 27 (range, 0 to 44; mean±standard deivation [SD], 27.1±7.5) and about 30% and 5% of cancer survivors experienced mild and severe financial toxicity, respectively. Younger age, lower education, lower household income was associated with higher financial toxicity.
Conclusion
The COST-K is a valid and reliable instrument for measuring financial toxicity in disease-free breast cancer survivors. Considering its impact on the health-related quality of life, more studies need to be conducted to evaluate financial toxicity in cancer survivors and design interventions.

Citations

Citations to this article as recorded by  
  • Severity of Financial Toxicity for Patients Receiving Palliative Radiation Therapy
    Jeremy P. Harris, Eric Ku, Garrett Harada, Sophie Hsu, Elaine Chiao, Pranathi Rao, Erin Healy, Misako Nagasaka, Jessica Humphreys, Michael A. Hoyt
    American Journal of Hospice and Palliative Medicine®.2024; 41(6): 592.     CrossRef
  • Financial Toxicity in Radiation Oncology: Impact for Our Patients and for Practicing Radiation Oncologists
    Victoria S. Wu, Xinglei Shen, Janet de Moor, Fumiko Chino, Jonathan Klein
    Advances in Radiation Oncology.2024; 9(3): 101419.     CrossRef
  • Measures of financial toxicity in cancer survivors: a systematic review
    L. B. Thomy, M. Crichton, L. Jones, P. M. Yates, N. H. Hart, L. G. Collins, R. J. Chan
    Supportive Care in Cancer.2024;[Epub]     CrossRef
  • Validation of the COmprehensive Score for Financial Toxicity (COST) in Vietnamese patients with cancer
    Binh Thang Tran, Dinh Duong Le, Thanh Gia Nguyen, Minh Tu Nguyen, Minh Hanh Nguyen, Cao Khoa Dang, Dinh Trung Tran, Le An Pham
    PLOS ONE.2024; 19(6): e0306339.     CrossRef
  • Comprehensive Score for Financial Toxicity and Health-Related Quality of Life in Patients With Cancer and Survivors: A Systematic Review and Meta-Analysis
    Stevanus Pangestu, Fanni Rencz
    Value in Health.2023; 26(2): 300.     CrossRef
  • Association between financial toxicity and health-related quality of life of patients with gynecologic cancer
    Yusuke Kajimoto, Kazunori Honda, Shiro Suzuki, Masahiko Mori, Hirofumi Tsubouchi, Kohshiro Nakao, Anri Azuma, Takashi Shibutani, Shoji Nagao, Takahiro Koyanagi, Izumi Kohara, Shuko Tamaki, Midori Yabuki, Lida Teng, Keiichi Fujiwara, Ataru Igarashi
    International Journal of Clinical Oncology.2023; 28(3): 454.     CrossRef
  • Financial Toxicity Following Cancer in a Middle-Income Country with a Pluralistic Health System: Validation of the COST Questionnaire
    Veni V. Sakti, Mahmoud Danaee, Cheng-Har Yip, Ros S. A. Bustamam, Marniza Saad, Gin Gin Gan, Jerome Tan, Yueh Ni Lim, Flora L.T. Chong, Murallitharan Munisamy, Farahida Mohd Farid, Boon Lui Sew, Yek-Ching Kong, Nishalini Muniandy, Nirmala Bhoo-Pathy
    Cancer Care Research Online.2023; 3(3): e044.     CrossRef
  • Financial Toxicity Among Breast Cancer Patients
    Yi Kuang, Xiaoyi Yuan, Zheng Zhu, Weijie Xing
    Cancer Nursing.2023;[Epub]     CrossRef
  • Heterogeneity of financial toxicity and associated risk factors for older cancer survivors in China
    Mingzhu Su, Siqi Liu, Li Liu, Fang Wang, Jiahui Lao, Xiaojie Sun
    iScience.2023; 26(10): 107768.     CrossRef
  • Evaluation of financial toxicity and associated factors in female patients with breast cancer: a systematic review and meta-analysis
    Yusuf Çeli̇k, Sevilay Şenol Çeli̇k, Seda Sarıköse, Hande Nur Arslan
    Supportive Care in Cancer.2023;[Epub]     CrossRef
  • Validity of the COmprehensive Score for financial Toxicity (COST) in patients with gynecologic cancer
    Yusuke Kajimoto, Takashi Shibutani, Shoji Nagao, Satoshi Yamaguchi, Shiro Suzuki, Masahiko Mori, Hirofumi Tsubouchi, Kohshiro Nakao, Anri Azuma, Takahiro Koyanagi, Izumi Kohara, Shuko Tamaki, Midori Yabuki, Lida Teng, Kazunori Honda, Ataru Igarashi
    International Journal of Gynecologic Cancer.2022; : ijgc-2022-003410.     CrossRef
  • 7,330 View
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  • 9 Web of Science
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Education Level Is a Strong Prognosticator in the Subgroup Aged More Than 50 Years Regardless of the Molecular Subtype of Breast Cancer: A Study Based on the Nationwide Korean Breast Cancer Registry Database
Ki-Tae Hwang, Woochul Noh, Se-Heon Cho, Jonghan Yu, Min Ho Park, Joon Jeong, Hyouk Jin Lee, Jongjin Kim, Sohee Oh, Young A Kim, Korean Breast Cancer Society
Cancer Res Treat. 2017;49(4):1114-1126.   Published online February 2, 2017
DOI: https://doi.org/10.4143/crt.2016.528
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Purpose
This study investigated the role of the education level (EL) as a prognostic factor for breast cancer and analyzed the relationship between the EL and various confounding factors.
Materials and Methods
The data for 64,129 primary breast cancer patients from the Korean Breast Cancer Registry were analyzed. The EL was classified into two groups according to the education period; the high EL group (≥ 12 years) and low EL group (< 12 years). Survival analyses were performed with respect to the overall survival between the two groups.
Results
A high EL conferred a superior prognosis compared to a low EL in the subgroup aged > 50 years (hazard ratio, 0.626; 95% confidence interval [CI], 0.577 to 0.678) but not in the subgroup aged ≤ 50 years (hazard ratio, 0.941; 95% CI, 0.865 to 1.024). The EL was a significant independent factor in the subgroup aged > 50 years according to multivariate analyses. The high EL group showed more favorable clinicopathologic features and a higher proportion of patients in this group received lumpectomy, radiation therapy, and endocrine therapy. In the high EL group, a higher proportion of patients received chemotherapy in the subgroups with unfavorable clinicopathologic features. The EL was a significant prognosticator across all molecular subtypes of breast cancer.
Conclusion
The EL is a strong independent prognostic factor for breast cancer in the subgroup aged > 50 years regardless of the molecular subtype, but not in the subgroup aged ≤ 50 years. Favorable clinicopathologic features and active treatments can explain the main causality of the superior prognosis in the high EL group.

Citations

Citations to this article as recorded by  
  • Risk factors for intensive care unit readmission after lung transplantation: a retrospective cohort study
    Hye-Bin Kim, Sungwon Na, Hyo Chae Paik, Hyeji Joo, Jeongmin Kim
    Acute and Critical Care.2021; 36(2): 99.     CrossRef
  • Educational disparities in nasopharyngeal carcinoma survival: Temporal trends and mediating effects of clinical factors
    Wang‐Zhong Li, Guo‐Ying Liu, Shu‐Hui Lv, Sen‐Kui Xu, Hu Liang, Kui‐Yuan Liu, Meng‐Yun Qiang, Xi Chen, Xiang Guo, Xing Lv, Wei‐Xiong Xia, Yan‐Qun Xiang
    Clinical and Translational Medicine.2020;[Epub]     CrossRef
  • Education level as a predictor of survival in patients with multiple myeloma
    Limei Xu, Xiuju Wang, Xueyi Pan, Xiaotao Wang, Qing Wang, Bingyi Wu, Jiahui Cai, Ying Zhao, Lijuan Chen, Wuping Li, Juan Li
    BMC Cancer.2020;[Epub]     CrossRef
  • Prognostic influence of Korean public medical insurance system on breast cancer patients
    Ki-Tae Hwang, Young Wook Ju, Young A Kim, Jongjin Kim, Sohee Oh, Jiwoong Jung, Young Jun Chai, In Sil Choi, So Won Oh
    Annals of Surgical Treatment and Research.2019; 96(2): 58.     CrossRef
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