Cancer Research and Treatment

Original Articles

Ten-Year Follow-Up Clinical Outcomes and the Role of Adjuvant Chemotherapy in HER2-Positive Patients with Microinvasive Breast Cancer: Yeokyeong Shin, Soo-Young Lee, Hyehyun Jeong, Jin-Hee Ahn, Kyung Hae Jung, Sung-Bae Kim, Hee Jeong Kim, Jong Won Lee, Byung Ho Son, BeomSeok Ko, Ji Sun Kim, Il Yong Chung, Hee Jin Lee, Gyungyub Gong, Sae Byul Lee, Jae Ho Jeong; Received November 22, 2024 Accepted March 3, 2025 Published online March 5, 2025; DOI: https://doi.org/10.4143/crt.2024.1120 [Accepted]

Abstract PDF: Purpose
Although HER2 positivity is prevalent in microinvasive breast cancer (MIBC), data focused on HER2-positive MIBC are limited. We investigated the clinical course and long-term outcomes of HER2-positive MIBC and evaluated the role of adjuvant chemotherapy.
Materials and Methods
The study included patients with curatively resected pT1mi pN0 HER2-positive breast cancer between January 2000 and January 2020. Treatments and survival outcomes, including invasive breast cancer-free survival (IBCFS), distant recurrence-free survival (DRFS), and overall survival (OS) were analyzed.
Results
The analysis included 799 female patients. The median age was 51 years (range, 23–79), and 51.6% (n=412) were premenopausal. Multifocality was confirmed in 17.3% (n=138), and estrogen receptor (ER) positivity in 29.8% (n = 238). Adjuvant chemotherapy was administered to 17.5% (n=140), with doxifluridine in 96.4% of cases. One patient (0.1%) received trastuzumab. With a median follow-up of 119.0 months (95% CI, 114.0–127.0), the 8-year IBCFS, DRFS, and OS were 91.2% (95% CI, 89.1–93.3), 97.5% (95% CI, 96.4–98.7), and 98.8% (95% CI, 98.0–99.6), respectively. No significant differences were observed between patients with and without adjuvant chemotherapy. The lack of differences in IBCFS by chemotherapy was consistent across subgroups, including pre-/postmenopausal patients, grade 1-2/3 tumors, and ER-negative disease.
Conclusion
A clinically meaningful proportion of HER2-positive MIBC patients experience IBCFS events with long-term follow-up. Adjuvant chemotherapy did not improve survival, potentially due to the use of an outdated, ineffective regimen. The role of modern adjuvant regimens, particularly those incorporating HER2-targeted therapy, warrants further exploration.

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Breast cancer

Implementation of BRCA Test among Young Breast Cancer Patients in South Korea: A Nationwide Cohort Study: Yung-Huyn Hwang, Tae-Kyung Yoo, Sae Byul Lee, Jisun Kim, Beom Seok Ko, Hee Jeong Kim, Jong Won Lee, Byung Ho Son, Il Yong Chung; Cancer Res Treat. 2024;56(3):802-808. Published online February 19, 2024; DOI: https://doi.org/10.4143/crt.2023.1186

Abstract PDF Supplementary Material PubReader ePub: Purpose
This study aimed to investigate the frequency of BRCA testing and related factors among young breast cancer patients (age < 40 years) in South Korea.
Materials and Methods
We conducted a nationwide retrospective cohort study using data from the Health Insurance Review and Assessment claims. Newly diagnosed breast cancer patients younger than 40 were included. Annual BRCA testing ratios (number of BRCA test recipients/the number of patients undergoing breast cancer surgery in each year) were analyzed by region and health care delivery system. We investigated the location of breast cancer diagnosis and BRCA testing.
Results
From January 2010 to December 2020, there were 25,665 newly diagnosed young breast cancer patients, of whom 12,186 (47.5%) underwent BRCA testing. The BRCA testing ratios increased gradually from 0.084 (154/1,842) in 2010 to 0.961 (1,975/2,055) in 2020. Medical aid (vs. health insurance) and undergoing surgery in metropolitan cities or others (vs. Seoul), general hospitals, and clinics (vs. tertiary hospitals) were associated with a lower likelihood of BRCA testing. While 97.8% of the patients diagnosed in Seoul underwent BRCA testing in Seoul, 22.9% and 29.2% of patients who were diagnosed in metropolitan areas and other regions moved to Seoul and underwent BRCA testing, respectively.
Conclusion
The frequency of BRCA testing has increased over time in South Korea, with Seoul showing a particularly high rate of testing. About one-quarter of patients diagnosed with breast cancer outside of Seoul moved to Seoul and underwent BRCA testing.

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General

Comparison of the Data of a Next-Generation Sequencing Panel from K-MASTER Project with That of Orthogonal Methods for Detecting Targetable Genetic Alterations: Yoon Ji Choi, Jung Yoon Choi, Ju Won Kim, Ah Reum Lim, Youngwoo Lee, Won Jin Chang, Soohyeon Lee, Jae Sook Sung, Hee-Joon Chung, Jong Won Lee, Eun Joo Kang, Jung Sun Kim, Taekyu Lim, Hye Sook Kim, Yu Jung Kim, Mi Sun Ahn, Young Saing Kim, Ji Hyun Park, Seungtaek Lim, Sung Shim Cho, Jang Ho Cho, Sang Won Shin, Kyong Hwa Park, Yeul Hong Kim; Cancer Res Treat. 2022;54(1):30-39. Published online May 20, 2021; DOI: https://doi.org/10.4143/crt.2021.218

Abstract PDF PubReader ePub

Purpose
K-MASTER project is a Korean national precision medicine platform that screened actionable mutations by analyzing next-generation sequencing (NGS) of solid tumor patients. We compared gene analyses between NGS panel from the K-MASTER project and orthogonal methods.
Materials and Methods
Colorectal, breast, non–small cell lung, and gastric cancer patients were included. We compared NGS results from K-MASTER projects with those of non-NGS orthogonal methods (KRAS, NRAS, and BRAF mutations in colorectal cancer [CRC]; epidermal growth factor receptor [EGFR], anaplastic lymphoma kinase [ALK] fusion, and reactive oxygen species 1 [ROS1] fusion in non–small cell lung cancer [NSCLC], and Erb-B2 receptor tyrosine kinase 2 (ERBB2) positivity in breast and gastric cancers).
Results
In the CRC cohort (n=225), the sensitivity and specificity of NGS were 87.4% and 79.3% (KRAS); 88.9% and 98.9% (NRAS); and 77.8% and 100.0% (BRAF), respectively. In the NSCLC cohort (n=109), the sensitivity and specificity of NGS for EGFR were 86.2% and 97.5%, respectively. The concordance rate for ALK fusion was 100%, but ROS1 fusion was positive in only one of three cases that were positive in orthogonal tests. In the breast cancer cohort (n=260), ERBB2 amplification was detected in 45 by NGS. Compared with orthogonal methods that integrated immunohistochemistry and in situ hybridization, sensitivity and specificity were 53.7% and 99.4%, respectively. In the gastric cancer cohort (n=64), ERBB2 amplification was detected in six by NGS. Compared with orthogonal methods, sensitivity and specificity were 62.5% and 98.2%, respectively.
Conclusion
The results of the K-MASTER NGS panel and orthogonal methods showed a different degree of agreement for each genetic alteration, but generally showed a high agreement rate.

Citations

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Genomic Profiling of Driver Gene Alterations in Patients With Non–Small Cell Lung Cancer, Patterns of Treatment and Impact on Survival Outcomes: A Single Center Experience of More Than 1200 Patients
Minit Shah, Vanita Noronha, Vijay Patil, Ajay Kumar Singh, Nandini Menon, Supriya Goud, Srushti Shah, Sucheta More, Akhil Kapoor, Bal Krishna Mishra, Pratik Chandrani, Anuradha Chougule, Vinod Gupta, Priyanka Pange, Omshree Shetty, Trupti Pai, Rajiv Kaush
Clinical Lung Cancer.2025; 26(4): e270. CrossRef
Integrated clinical and genomic models using machine-learning methods to predict the efficacy of paclitaxel-based chemotherapy in patients with advanced gastric cancer
Yonghwa Choi, Jangwoo Lee, Keewon Shin, Ji Won Lee, Ju Won Kim, Soohyeon Lee, Yoon Ji Choi, Kyong Hwa Park, Jwa Hoon Kim
BMC Cancer.2024;[Epub] CrossRef
Supporting Biomarker-Driven Therapies in Oncology: A Genomic Testing Cost Calculator
Albrecht Stenzinger, Brian Cuffel, Noman Paracha, Eric Vail, Jesus Garcia-Foncillas, Clifford Goodman, Ulrik Lassen, Gilles Vassal, Sean D Sullivan
The Oncologist.2023; 28(5): e242. CrossRef
Genomic analysis of plasma circulating tumor DNA in patients with heavily pretreated HER2 + metastatic breast cancer
Kyoungmin Lee, Jongwon Lee, Jungmin Choi, Sung Hoon Sim, Jeong Eun Kim, Min Hwan Kim, Yeon Hee Park, Jee Hyun Kim, Su-Jin Koh, Kyong Hwa Park, Myoung Joo Kang, Mi Sun Ahn, Kyoung Eun Lee, Hee-Jun Kim, Hee Kyung Ahn, Han Jo Kim, Keon Uk Park, In Hae Park
Scientific Reports.2023;[Epub] CrossRef
Recommendations for the Use of Next-Generation Sequencing and the Molecular Tumor Board for Patients with Advanced Cancer: A Report from KSMO and KCSG Precision Medicine Networking Group
Shinkyo Yoon, Miso Kim, Yong Sang Hong, Han Sang Kim, Seung Tae Kim, Jihun Kim, Hongseok Yun, Changhoon Yoo, Hee Kyung Ahn, Hyo Song Kim, In Hee Lee, In-Ho Kim, Inkeun Park, Jae Ho Jeong, Jaekyung Cheon, Jin Won Kim, Jina Yun, Sun Min Lim, Yongjun Cha, Se
Cancer Research and Treatment.2022; 54(1): 1. CrossRef

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A Nomogram for Predicting the Oncotype DX Recurrence Score in Women with T1-3N0-1miM0 Hormone Receptor‒Positive, Human Epidermal Growth Factor 2 (HER2)‒Negative Breast Cancer: Sae Byul Lee, Junetae Kim, Guiyun Sohn, Jisun Kim, Il Yong Chung, Hee Jeong Kim, Beom Seok Ko, Byung Ho Son, Sei-Hyun Ahn, Jong Won Lee, Kyung Hae Jung; Cancer Res Treat. 2019;51(3):1073-1085. Published online November 1, 2018; DOI: https://doi.org/10.4143/crt.2018.357

Abstract PDF Supplementary Material PubReader ePub

Purpose
This preliminary study was conducted to evaluate the association between Oncotype DX (ODX) recurrence score and traditional prognostic factors. We also developed a nomogram to predict subgroups with low ODX recurrence scores (less than 25) and to avoid additional chemotherapy treatments for those patients.
Materials and Methods
Clinicopathological and immunohistochemical variables were retrospectively retrieved and analyzed from a series of 485 T1-3N0-1miM0 hormone receptor-positive, human epidermal growth factor 2‒negative breast cancer patients with available ODX test results at Asan Medical Center from 2010 to 2016. One hundred twenty-seven patients (26%) had positive axillary lymph node micrometastases, and 408 (84%) had ODX recurrence scores of ≤25. Logistic regression was performed to build a nomogram for predicting a low-risk subgroup of the ODX assay.
Results
Multivariate analysis revealed that estrogen receptor (ER) score, progesterone receptor (PR) score, histologic grade, lymphovascular invasion (LVI), and Ki-67 had a statistically significant association with the low-risk subgroup. With these variables, we developed a nomogram to predict the low-risk subgroup with ODX recurrence scores of ≤25. The area under the receiver operating characteristic curve was 0.90 (95% confidence interval [CI], 0.85 to 0.96). When applied to the validation group the nomogram was accurate with an area under the curve = 0.88 (95% CI, 0.83 to 0.95).
Conclusion
The low ODX recurrence score subgroup can be predicted by a nomogram incorporating five traditional prognostic factors: ER, PR, histologic grade, LVI, and Ki-67. Our nomogram, which predicts a low-risk ODX recurrence score, will be a useful tool to help select patients who may or may not need additional ODX testing.

Citations

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A Novel Nomogram for Estimating a High-Risk Result in the EndoPredict® Test for Estrogen Receptor-Positive/Human Epidermal Growth Factor Receptor 2 (HER2)-Negative Breast Carcinoma
Víctor Macarrón, Itsaso Losantos-García, Alberto Peláez-García, Laura Yébenes, Alberto Berjón, Laura Frías, Covadonga Martí, Pilar Zamora, José Ignacio Sánchez-Méndez, David Hardisson
Cancers.2025; 17(2): 273. CrossRef
Nomogram Development for Assessing Oncotype DX Recurrence Scores in Breast Cancer: A Chinese Population Study
Jiayin Song, Lin Yang, Zhengqi Feng, Liyu Jiang
Cancer Medicine.2025;[Epub] CrossRef
Efficacy, safety, and predictive model of Palbociclib in the treatment of HR-positive and HER2-negative metastatic breast cancer
Wei Wang, Wenqian Lei, Ziru Fang, Ruiyuan Jiang, Xiaojia Wang
BMC Cancer.2024;[Epub] CrossRef
Development and validation of a clinical breast cancer tool for accurate prediction of recurrence
Asim Dhungana, Augustin Vannier, Fangyuan Zhao, Jincong Q. Freeman, Poornima Saha, Megan Sullivan, Katharine Yao, Elbio M. Flores, Olufunmilayo I. Olopade, Alexander T. Pearson, Dezheng Huo, Frederick M. Howard
npj Breast Cancer.2024;[Epub] CrossRef
Prediction of Oncotype DX Recurrence Score Based on Systematic Evaluation of Ki-67 Scores in Hormone Receptor-Positive Early Breast Cancer
Ji Min Kim, Eun Yoon Cho
Journal of Breast Cancer.2024; 27(3): 201. CrossRef
Development of a nomogram to predict recurrence scores obtained using Oncotype DX in Japanese patients with breast cancer
Akio Shibata, Nobuko Tamura, Keiichi Kinowaki, Aya Nishikawa, Kiyo Tanaka, Yoko Kobayashi, Takuya Ogura, Yuko Tanabe, Hidetaka Kawabata
Breast Cancer.2024; 31(6): 1018. CrossRef
Shear-wave elastography-based nomograms predicting 21-gene recurrence score for adjuvant chemotherapy decisions in patients with breast cancer
Ji Hyun Youk, Eun Ju Son, Joon Jeong, Hye Mi Gweon, Na Lae Eun, Jeong-Ah Kim
European Journal of Radiology.2023; 158: 110638. CrossRef
Prediction of Oncotype DX Recurrence Score Using Clinicopathological Variables in Estrogen Receptor-Positive/Human Epidermal Growth Factor Receptor 2-Negative Breast Cancer
Min Chong Kim, Sun Young Kwon, Jung Eun Choi, Su Hwan Kang, Young Kyung Bae
Journal of Breast Cancer.2023; 26(2): 105. CrossRef
Clinicopathological Factors Associated with Oncotype DX Risk Group in Patients with ER+/HER2- Breast Cancer
Ran Song, Dong-Eun Lee, Eun-Gyeong Lee, Seeyoun Lee, Han-Sung Kang, Jai Hong Han, Keun Seok Lee, Sung Hoon Sim, Heejung Chae, Youngmee Kwon, Jaeyeon Woo, So-Youn Jung
Cancers.2023; 15(18): 4451. CrossRef
A simplified risk scoring system for predicting high-risk groups in gene expression tests for patients with estrogen receptor-positive, human epidermal growth factor receptor 2-negative, and node-positive breast cancer
Kwang Hyun Yoon, Suk Jun Lee, Yujin Kim, Jee Hyun Ahn, Jee Ye Kim, Hyung Seok Park, Seung Il Kim, Seho Park
Annals of Surgical Treatment and Research.2023; 105(6): 360. CrossRef
Deep Learning-Based Pathology Image Analysis Enhances Magee Feature Correlation With Oncotype DX Breast Recurrence Score
Hongxiao Li, Jigang Wang, Zaibo Li, Melad Dababneh, Fusheng Wang, Peng Zhao, Geoffrey H. Smith, George Teodoro, Meijie Li, Jun Kong, Xiaoxian Li
Frontiers in Medicine.2022;[Epub] CrossRef
A Novel Surrogate Nomogram Capable of Predicting OncotypeDX Recurrence Score©
Matthew G. Davey, Amirhossein Jalali, Éanna J. Ryan, Ray P. McLaughlin, Karl J. Sweeney, Michael K. Barry, Carmel M. Malone, Maccon M. Keane, Aoife J. Lowery, Nicola Miller, Michael J. Kerin
Journal of Personalized Medicine.2022; 12(7): 1117. CrossRef
Use of a supervised machine learning model to predict Oncotype DX risk category in node-positive patients older than 50 years of age
Austin D. Williams, Kate R. Pawloski, Hannah Y. Wen, Varadan Sevilimedu, Donna Thompson, Monica Morrow, Mahmoud El-Tamer
Breast Cancer Research and Treatment.2022; 196(3): 565. CrossRef
The Role of Oncotype DX® Recurrence Score in Predicting Axillary Response After Neoadjuvant Chemotherapy in Breast Cancer
Jaime A. Pardo, Betty Fan, Alessandra Mele, Stephanie Serres, Monica G. Valero, Isha Emhoff, Amulya Alapati, Ted A. James
Annals of Surgical Oncology.2021; 28(3): 1320. CrossRef
A nomogram to predict the high-risk RS in HR+/HER2-breast cancer patients older than 50 years of age
Jing Yu, Jiayi Wu, Ou Huang, Jianrong He, Li Zhu, Weiguo Chen, Yafen Li, Xiaosong Chen, Kunwei Shen
Journal of Translational Medicine.2021;[Epub] CrossRef
Clinicopathological correlates, oncological impact, and validation of Oncotype DX™ in a European Tertiary Referral Centre
Matthew G. Davey, Éanna J. Ryan, Sami Abd Elwahab, Jessie A. Elliott, Peter F. McAnena, Karl J. Sweeney, Carmel M. Malone, Ray McLaughlin, Michael K. Barry, Maccon M. Keane, Aoife J. Lowery, Michael J. Kerin
The Breast Journal.2021; 27(6): 521. CrossRef
Dynamic contrast enhanced-MRI and diffusion-weighted image as predictors of lymphovascular invasion in node-negative invasive breast cancer
Bo Bae Choi
World Journal of Surgical Oncology.2021;[Epub] CrossRef
Prognostic value of the 21-gene recurrence score for regional recurrence in patients with estrogen receptor-positive breast cancer
Minji Koh, Jinhong Jung, Su Ssan Kim, Seung Do Ahn, Eun Kyung Choi, Il Yong Chung, Jong Won Lee, Sung-Bae Kim, Jae Ho Jeong
Breast Cancer Research and Treatment.2021; 188(3): 583. CrossRef
A nomogram for predicting probability of low risk of MammaPrint results in women with clinically high-risk breast cancer
Young Joo Lee, Young Sol Hwang, Junetae Kim, Sei-Hyun Ahn, Byung Ho Son, Hee Jeong Kim, Beom Seok Ko, Jisun Kim, Il Yong Chung, Jong Won Lee, Sae Byul Lee
Scientific Reports.2021;[Epub] CrossRef
Development of a Nomogram to Predict the Recurrence Score of 21-Gene Prediction Assay in Hormone Receptor–Positive Early Breast Cancer
Shin Hye Yoo, Tae-Yong Kim, Miso Kim, Kyung-Hun Lee, Eunshin Lee, Han-Byoel Lee, Hyeong-Gon Moon, Wonshik Han, Dong-Young Noh, Sae-Won Han, Tae-You Kim, Seock-Ah Im
Clinical Breast Cancer.2020; 20(2): 98. CrossRef
Ki‐67 index, progesterone receptor expression, histologic grade and tumor size in predicting breast cancer recurrence risk: A consecutive cohort study
Yanna Zhang, Yidong Zhou, Feng Mao, Ru Yao, Qiang Sun
Cancer Communications.2020; 40(4): 181. CrossRef
Estrogen and Progesterone Receptor Testing in Breast Cancer: American Society of Clinical Oncology/College of American Pathologists Guideline Update
Kimberly H. Allison, M. Elizabeth H. Hammond, Mitchell Dowsett, Shannon E. McKernin, Lisa A. Carey, Patrick L. Fitzgibbons, Daniel F. Hayes, Sunil R. Lakhani, Mariana Chavez-MacGregor, Jane Perlmutter, Charles M. Perou, Meredith M. Regan, David L. Rimm, W
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Oncotype DX Predictive Nomogram for Recurrence Score Output: The Novel System ADAPTED01 Based on Quantitative Immunochemistry Analysis
Fabio Marazzi, Roberto Barone, Valeria Masiello, Valentina Magri, Antonino Mulè, Angela Santoro, Federica Cacciatori, Luca Boldrini, Gianluca Franceschini, Francesca Moschella, Giuseppe Naso, Silverio Tomao, Maria Antonietta Gambacorta, Giovanna Mantini,
Clinical Breast Cancer.2020; 20(5): e600. CrossRef

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Axillary Lymph Node Dissection Does Not Improve Post-mastectomy Overall or Disease-Free Survival among Breast Cancer Patients with 1-3 Positive Nodes: Ji Hyeon Joo, Su Ssan Kim, Byung Ho Son, Seung Do Ahn, Jin Hong Jung, Eun Kyung Choi, Sei Hyun Ahn, Jong Won Lee, Hee Jeong Kim, Beom Seok Ko; Cancer Res Treat. 2019;51(3):1011-1021. Published online October 16, 2018; DOI: https://doi.org/10.4143/crt.2018.438

Abstract PDF Supplementary Material PubReader ePub

Purpose
Axillary lymph node dissection (ALND) may be avoidable for breast cancer patients with 1-2 positive lymph nodes (LN) after breast-conserving therapy. However, the effects of ALND after mastectomy remain unclear because radiation is not routinely used. Herein, we compared the benefits of post-mastectomy ALND versus sentinel node biopsy (SNB) alone for breast cancer patients with 1-3 metastatic LNs.
Materials and Methods
A total of 1,697 patients with pN1 disease who underwent mastectomy during 2000-2015 were identified from an institutional database. Outcomes were compared using the inverse probability of treatment weighted method.
Results
Patients who underwent SNB tended to have smaller tumors, a lower histology grade, a lower number of positive LNs, and better immunohistochemical findings. After correcting all confounding factors regarding patient, tumor, and adjuvant treatment, the SNB and ALND groups did not differ in terms of overall survival (OS) and disease-free survival (DFS), distant metastasis and locoregional recurrence. The 10-year DFS and OS rates were 83% and 84%, respectively, during a median follow-up period of 93 months.
Conclusion
ALND did not improve post-mastectomy survival outcomes among patients with N1 breast cancer, even after adjusting for all histopathologic and treatment-related factors.

Citations

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Lymphangiogenesis in Breast Cancer: From Molecular Mechanisms to Clinical Implications
Brusi Kola, Sooraj Kakkat, Prabhat Suman, Emily Crouch, Debanjan Chakroborty, Chandrani Sarkar
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The Impact of Sentinel Lymph Node Biopsy on Female Patients With T3-4c Breast Cancer and 1-2 Positive Lymph Nodes: A Population-Based Cohort Study
Hanzhao Yang, Yadong Sun, Peili Wang, Jianghua Qiao, Chengzheng Wang, Zhenzhen Liu
Clinical Breast Cancer.2024; 24(3): e126. CrossRef
Axillary management in patients with clinical node-negative early breast cancer and positive sentinel lymph node: a systematic review and meta-analysis
Changzai Li, Pan Zhang, Jie Lv, Wei Dong, Baoshan Hu, Jinji Zhang, Hongcheng Zhu
Frontiers in Oncology.2024;[Epub] CrossRef
Reevaluating Axillary Lymph Node Dissection in Total Mastectomy for Low Axillary Burden Breast Cancer: Insights from a Meta-Analysis including the SINODAR-ONE Trial
Munaser Alamoodi, Neill Patani, Kinan Mokbel, Umar Wazir, Kefah Mokbel
Cancers.2024; 16(4): 742. CrossRef
RecurIndex-Guided postoperative radiotherapy with or without Avoidance of Irradiation of regional Nodes in 1–3 node-positive breast cancer (RIGAIN): a study protocol for a multicentre, open-label, randomised controlled prospective, phase III trial
Jing Liu, Yuting Tan, Zhuofei Bi, Suning Huang, Na Zhang, An-du Zhang, Lina Zhao, Yu Wang, Zibin Liang, Yu Hou, Xiangying Xu, Jianying Chen, Fei Wang, Xiaowen Lan, Xiao Lin, Xiaoxue Zhang, Wenyi Zhou, Xuting Ye, Jian-gui Guo, Xiaohong Wang, Ran Ding, Jiay
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The prognostic analysis of further axillary dissection in breast cancer with 1-2 positive sentinel lymph nodes undergoing mastectomy
Xueyi Zhao, Liu Yang, Congbo Cao, Zhenchuan Song
Frontiers in Oncology.2024;[Epub] CrossRef
Sentinel lymph node biopsy versus axillary lymph node dissection in breast cancer patients undergoing mastectomy
Damiano GENTILE, Corrado TINTERRI
Minerva Surgery.2024;[Epub] CrossRef
Can Axillary Lymph Node Dissection be Omitted in Breast Cancer Patients with Metastatic Sentinel Lymph Nodes Undergoing Mastectomy? A Systematic Review and Meta‐Analysis of Real‐World Evidence
Fulong Chen, Xiaowen Li, Xianjun Lin, Lijia Chen, Zhaoling Lin, Hao Wu, Jishang Chen
World Journal of Surgery.2023; 47(10): 2446. CrossRef
De-implementation of Axillary Dissection in Women Undergoing Mastectomy for Breast Cancer
Laura D. Leonard, Thiago B. de Araujo, Christopher Quinn, Madeline B. Thomas, Laurel Beaty, Nicole M. Mott, Kathryn Colborn, Alicia A. Heelan, Sarah E. A. Tevis, Nicole Christian, Gretchen Arhendt, Ana L. Gleisner
Annals of Surgical Oncology.2023; 30(9): 5692. CrossRef
A multi-dimensional nomogram to predict non-sentinel lymph node metastases in T1–2HR+ breast cancer
Ke Xiang, Jialin Chen, Yu Min, Hang Chen, Jiaxin Yang, Daixing Hu, Yuling Han, Guobing Yin, Yang Feng
Frontiers in Endocrinology.2023;[Epub] CrossRef
Sentinel lymph node biopsy versus axillary lymph node dissection in breast cancer patients undergoing mastectomy with one to two metastatic sentinel lymph nodes: sub-analysis of the SINODAR-ONE multicentre randomized clinical trial and reopening of enrolm
Corrado Tinterri, Giuseppe Canavese, Wolfgang Gatzemeier, Erika Barbieri, Alberto Bottini, Andrea Sagona, Giulia Caraceni, Alberto Testori, Simone Di Maria Grimaldi, Carla Dani, Luca Boni, Paolo Bruzzi, Bethania Fernandes, Marta Scorsetti, Alberto Zambell
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Efficacy and safety comparison between axillary lymph node dissection with no axillary surgery in patients with sentinel node-positive breast cancer: a systematic review and meta-analysis
Yu-Jia Fan, Jin-Cheng Li, De-Miao Zhu, Hai-Long Zhu, Yi Zhao, Xin-Bing Zhu, Gang Wu, Ting-ting Bai
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Factores predictivos de metástasis en ganglios no centinela en el cáncer de mama con ganglio centinela positivo
Mariana Peyroteo, Rita Canotilho, Ana Margarida Correia, Catarina Baía, Cátia Ribeiro, Paulo Reis, Abreu de Sousa
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Optimizing Axillary Management in Clinical T1-2N0 Mastectomy Patients with Positive Sentinel Lymph Nodes
Olga Kantor, Jessica Means, Samantha Grossmith, Tanujit Dey, Jennifer R. Bellon, Elizabeth A. Mittendorf, Tari A. King
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Predictive factors of non-sentinel lymph node disease in breast cancer patients with positive sentinel lymph node
Mariana Peyroteo, Rita Canotilho, Ana Margarida Correia, Catarina Baía, Cátia Ribeiro, Paulo Reis, Abreu de Sousa
Cirugía Española (English Edition).2022; 100(2): 81. CrossRef
Axilla lymph node dissection can be safely omitted in patients with 1–2 positive sentinel nodes receiving mastectomy: a large multi-institutional study and a systemic meta-analysis
Weiqi Gao, Shuangshuang Lu, Yufei Zeng, Xiaosong Chen, Kunwei Shen
Breast Cancer Research and Treatment.2022; 196(1): 129. CrossRef
Comparison of survival outcomes between axillary conservation and axillary lymph node dissections in N1 early breast cancer: a propensity-matched SEER analysis
Nisha Wu, Xiaohan Su, Qiao Tan, Jing Luo, Yewei Yuan, Lingmi Hou, Junyan Li
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Surgeon Bias in the Management of Positive Sentinel Lymph Nodes
Brittany J. Mathias, James Sun, Weihong Sun, Jun-Min Zhou, William J. Fulp, Christine Laronga, M. Catherine Lee, John V. Kiluk
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Impact of Axillary Dissection Among Patients With Sentinel Node–Positive Breast Cancer Undergoing Mastectomy
James Sun, Brittany J. Mathias, Christine Laronga, Weihong Sun, Jun-Min Zhou, William J. Fulp, John V. Kiluk, M. Catherine Lee
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Evolution of the Use of Completion Axillary Lymph Node Dissection in Patients with T1/2N0M0 Breast Cancer and Tumour-Involved Sentinel Lymph Nodes Undergoing Mastectomy: A Cohort Study
André Hennigs, Fabian Riedel, Manuel Feißt, Melitta Köpke, Mahdi Rezai, Ulrike Nitz, Mareike Moderow, Michael Golatta, Christof Sohn, Jörg Heil
Annals of Surgical Oncology.2019; 26(8): 2435. CrossRef

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20 Crossref

No Association of Positive Superficial and/or Deep Margins with Local Recurrence in Invasive Breast Cancer Treated with Breast-Conserving Surgery: Tae In Yoon, Jong Won Lee, Sae Byul Lee, Guiyun Sohn, Jisun Kim, Il Young Chung, Hee Jeong Kim, Beom Seok Ko, Byung Ho Son, Gyungyub Gong, Sung-Bae Kim, Su Ssan Kim, Seung Do Ahn, Minsung Chung, Sei Hyun Ahn; Cancer Res Treat. 2018;50(1):275-282. Published online April 14, 2017; DOI: https://doi.org/10.4143/crt.2017.041

Abstract PDF Supplementary Material PubReader ePub

Purpose
We evaluated the effect of positive superficial and/or deep margin status on local recurrence (LR) in invasive breast cancer treated with breast-conserving surgery (BCS) followed by radiotherapy.
Materials and Methods
In total, 3,403 stage 1 and 2 invasive breast cancer patients treated with BCS followed by radiotherapy from January 2000 to December 2008 were included in this study. These patients were divided into three groups according to margin status: clear resection margin status for all sections (group 1, n=3,195); positive margin status in superficial and/or deep sections (group 2, n=121); and positive peripheral parenchymal margin regardless of superficial and/or deep margin involvement (group 3, n=87). The LR-free survival between these three groups was compared and the prognostic role of margin status was analyzed.
Results
Across all groups, age, tumor size, nodal status, and human epidermal growth factor receptor 2 status did not significantly differ. High grade, positive extensive intraductal component, hormone receptor positivity, hormone therapy received, and chemotherapy not received were more prevalent in groups 2 and 3 than in group 1. Five-year LR rates in groups 1, 2, and 3 were 1.9%, 1.7%, and 7.7%, respectively. Multivariate analysis revealed that group 3 was a significant predictor for LR (hazard ratio [HR], 4.78; p < 0.001), but that positive superficial and/or deep margin was not (HR, 0.66; p=0.57).
Conclusion
Superficial and/or deep margin involvement following BCS is not an important predictor for LR.

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Locoregional Recurrence-Free Survival in Postmastectomy Breast Cancer: A Comparative Longitudinal Study of Hypofractionated Versus Conventional Fractionated Radiation Therapy
Suma Susan Meloot, Ciniraj Raveendran, IP Yadev
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Assessment of Eligibility and Utilization of Accelerated Partial Breast Irradiation in Korean Breast Cancer Patients (KROG 22-15)
Seok-Joo Chun, Ji Hwan Jo, Yong Bae Kim, Sangjoon Park, Sung-Ja Ahn, Su Ssan Kim, Kyubo Kim, Kyung Hwan Shin
Cancer Research and Treatment.2024; 56(2): 549. CrossRef
Surgical margin status and survival outcomes of breast cancer patients treated with breast-conserving surgery and whole-breast irradiation after neoadjuvant chemotherapy
Jong-Ho Cheun, Young Joo Lee, Jun-Hee Lee, Yungil Shin, Jung Whan Chun, Soo Yeon Baek, Hong-Kyu Kim, Han-Byoel Lee, Jonghan Yu, Byung Joo Chae, Wonshik Han, Jeong Eon Lee
Breast Cancer Research and Treatment.2022; 194(3): 683. CrossRef
Comparison of Recurrence Rate Between Re-Excision With Radiotherapy and Radiotherapy-Only Groups in Surgical Margin Involvement of In Situ Carcinoma
Jun-Hee Lee, Hyunjun Lee, Yoon Ju Bang, Jai Min Ryu, Se Kyung Lee, Jonghan Yu, Jeong Eon Lee, Seok Won Kim, Seok Jin Nam, Byung Joo Chae
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Updates and Debate Concerning Margin Adequacy and Management following Breast-Conserving Surgery
Serena Bertozzi, Ambrogio P Londero, Jose Andres Diaz Nanez, Francesco Leone, Barbara Baita, Lucia La Verghetta, Milena Nobile, Daria Almesberger, Carla Cedolini
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Feasibility and safety of breast-conserving surgery via a periareolar incision for cancers located far from the nipple–areolar complex: a retrospective study
Joohyun Woo, Jihae Lee, Se Hyun Paek, Woosung Lim
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Breast-conserving surgery with 3D-printed surgical guide: a single-center, prospective clinical study
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Scientific Reports.2021;[Epub] CrossRef
Usefulness of 3D-surgical guides in breast conserving surgery after neoadjuvant treatment
Han Shin Lee, Hee Jeong Kim, Il Yong Chung, Jisun Kim, Sae Byul Lee, Jong Won Lee, Byung Ho Son, Sei Hyun Ahn, Hak Hee Kim, Joon Beom Seo, Jin Hee Ahn, Gyungyub Gong, Sangwook Lee, Namkug Kim, Beom Seok Ko
Scientific Reports.2021;[Epub] CrossRef
Partial chest wall radiation therapy for positive or close surgical margins after modified radical mastectomy for breast cancer without lymph node metastasis
Naoya Ishibashi, Haruna Nishimaki, Toshiya Maebayashi, Keita Adachi, Kenichi Sakurai, Shinobu Masuda, Masaharu Hata, Masahiro Okada
Asia-Pacific Journal of Clinical Oncology.2020; 16(1): 28. CrossRef
Impact of Oncotype DX Recurrence Score on the Patterns of Locoregional Recurrence in Breast Cancer (Korean Radiation Oncology Group 19-06)
Kyubo Kim, Jinhong Jung, Kyung Hwan Shin, Jin Ho Kim, Ji Hyun Chang, Su Ssan Kim, Haeyoung Kim, Won Park, Yong Bae Kim, Jee Suk Chang
Journal of Breast Cancer.2020; 23(3): 314. CrossRef
Magnetic resonance imaging based 3-dimensional printed breast surgical guide for breast-conserving surgery in ductal carcinoma in situ: a clinical trial
Zhen-Yu Wu, Aisha Alzuhair, Heejeong Kim, Jong Won Lee, Il Yong Chung, Jisun Kim, Sae Byul Lee, Byung Ho Son, Gyungyub Gong, Hak Hee Kim, Joon Beom Seo, Sei Hyun Ahn, Namkug Kim, BeomSeok Ko
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Lena Gabriel, Marina Schmidt, Stephanie Juhasz-Böss, Patrick Melchior, Anika von Heesen, Gilda Schmidt, Nicole Kranzhöfer, Erich-Franz Solomayer, Ingolf Juhasz-Böss, Georg-Peter Breitbach
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Survival Outcome of Combined GnRH Agonist and Tamoxifen Is Comparable to That of Sequential Adriamycin and Cyclophosphamide Chemotherapy Plus Tamoxifen in Premenopausal Patients with Lymph-Node–Negative, Hormone-Responsive, HER2-Negative, T1-T2 Breast Cancer: Guiyun Sohn, Sei Hyun Ahn, Hee Jeong Kim, Byung-Ho Son, Jong Won Lee, Beom Seok Ko, Yura Lee, Sae Byul Lee, Seunghee Baek; Cancer Res Treat. 2016;48(4):1351-1362. Published online April 6, 2016; DOI: https://doi.org/10.4143/crt.2015.444

Abstract PDF PubReader ePub

Purpose
The purpose of this study was to compare treatment outcomes between combined gonadotropin-releasing hormone agonist and tamoxifen (GnRHa+T) and sequential adriamycin and cyclophosphamide chemotherapy and tamoxifen (AC->T) in premenopausal patients with hormone-responsive, lymph-node–negative breast cancer.
Materials and Methods
In total, 994 premenopausal women with T1-T2, lymph-node–negative, hormone-receptor-positive, HER2-negative breast cancer between January 2003 and December 2008 were included in this retrospective cohort study. GnRHa+T and AC->T were administered to 608 patients (61.2%) and 386 patients (38.8%), respectively. Propensity score matching and inverse probability weighting were applied to the original cohort, and 260 patients for each treatment arm were included in the final analysis. Recurrence-free, cancer-specific, and overall survival was compared between the two treatment groups.
Results
A total of 994 patients were followed up for a median of 7.4 years (range, 0.5 to 11.4 years). The 5-year follow-up rate was 98.7%, and 13 patients were lost to follow-up. In propensity=matched cohorts (n=520), there was no difference in recurrence-free, cancer-specific, and overall survival rates between the two treatment groups (p=0.306, p=0.212, and p=0.102, respectively), and this was maintained after applying inverse probability weighting.
Conclusion
GnRHa+T is a reasonable alternative to AC-> T in patients with premenopausal, hormoneresponsive, HER2-negative, lymph-node–negative, T1-T2 breast cancer.

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Effectiveness of post-mastectomy adjuvant chemotherapy for the treatment of patients with prognostic stage IB breast cancer: A SEER-based study
HongMei Wang, Yi Peng, Jianbin Wu, ZhuangWei Chen, HuaLe Zhang
Asian Journal of Surgery.2023; 46(9): 3634. CrossRef
Risk of recurrence among patients with HR-positive, HER2-negative, early breast cancer receiving adjuvant endocrine therapy: A systematic review and meta-analysis
Elizabeth M. Salvo, Abril Oliva Ramirez, Jenilee Cueto, Ernest H. Law, Aaron Situ, Chris Cameron, Imtiaz A. Samjoo
The Breast.2021; 57: 5. CrossRef
Effectiveness of a 6-Month 22.5-mg Leuprolide Acetate Depot Formulation With Tamoxifen for Postoperative Premenopausal Estrogen Suppression in Hormone Receptor-Positive Breast Cancer
Zhen-Yu Wu, Young-jin Lee, Heejeong Kim, Jongwon Lee, Il Yong Chung, Jisun Kim, Saebyeol Lee, Byung-Ho Son, Sung-Bae Kim, Jae Ho Jeong, Gyungyub Gong, Sei-Hyun Ahn, BeomSeok Ko
Frontiers in Oncology.2021;[Epub] CrossRef
Changes in bone mineral density during 5 years of adjuvant treatment in premenopausal breast cancer patients
Minsung Kim, Hanna Kim, Sei Hyun Ahn, Vafa Tabatabaie, Sung Wook Choi, Guiyun Sohn, Sae Byul Lee, Beom Seok Ko, Il Yong Chung, Jisun Kim, Jong Won Lee, Byung Ho Son, Hee Jeong Kim
Breast Cancer Research and Treatment.2020; 180(3): 657. CrossRef
Change in Estradiol Levels among Premenopausal Patients with Breast Cancer Treated Using Leuprolide Acetate 11.25 Milligrams 3-Month Depot and Tamoxifen
Young-jin Lee, Zhen-Yu Wu, Hee jeong Kim, Jong Won Lee, Il Yong Chung, Jisun Kim, Sae Byul Lee, Byung Ho Son, Sung-Bae Kim, Jae Ho Jung, Gyungyub Gong, Sei-Hyun Ahn, BeomSeok Ko
Journal of Breast Cancer.2020; 23(5): 553. CrossRef
Survival outcome of combined GnRH agonist and tamoxifen is comparable to that of sequential adriamycin and cyclophosphamide chemotherapy plus tamoxifen in premenopausal patients with early breast cancer
Doonyapat Sa‑Nguanraksa, Thitikon Krisorakun, Wanee Pongthong, Pornchai O‑Charoenrat
Molecular and Clinical Oncology.2019;[Epub] CrossRef

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The Clinical Impact of 21-Gene Recurrence Score on Treatment Decisions for Patients with Hormone Receptor-Positive Early Breast Cancer in Korea: Moo Hyun Lee, Wonshik Han, Jeong Eon Lee, Ku Sang Kim, Heeseung Park, Jongjin Kim, Soo Youn Bae, Hyun Joo Shin, Jong Won Lee, Eun Sook Lee; Cancer Res Treat. 2015;47(2):208-214. Published online September 11, 2014; DOI: https://doi.org/10.4143/crt.2013.223

Abstract PDF PubReader ePub

Purpose
The 21-gene (Oncotype DX) recurrence score (RS) assay is useful in predicting the benefits of adjuvant chemotherapy for early breast cancer patients and is widely used in Western countries. However, to date, it has not gained much popularity in East Asia. We analyzed the results from five institutions’ experience from using the 21-gene assay and examined the impact of assay results on decision making of chemotherapy in Korean breast cancer patients and the associations between RS and clinicopathologic characteristics.
Materials and Methods
The 21-gene assay was performed on 212 patients with estrogen receptor-positive early breast cancer in five institutions. Each center made systemic treatment decisions both before and after the knowledge of assay results.
Results
Among the 212 patients, 132 (62.3%) had a low RS of < 18, 60 (28.3%) had an intermediate RS of 18-30, and 20 (9.4%) had a high RS of ≥ 31. Histologic grade, presence of micrometastases, Ki-67, and presence of lymphatic invasion were statistically associated with the RS results. Treatment decisions were changed in 115 of 212 patients (54.2%) in 109 of 212 (51.4%) from chemotherapy plus hormone therapy to hormone therapy, and in six of 212 (2.8%) from hormone therapy to chemotherapy plus hormone therapy.
Conclusion
The 21-gene breast cancer assay proved to have a significant impact on treatment decision- making. The test reduces chemotherapy use in more than 50% of Korean estrogen receptor-positive, early breast cancer patients.

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Seho Park, Yunan Han, Ying Liu, Adetunji T. Toriola, Lindsay L. Peterson, Graham A. Colditz, Seung Il Kim, Young Up Cho, Byeong-Woo Park, Yikyung Park
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