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Measuring Tumor Extent Based on Subtypes Using Magnetic Resonance Imaging: Radiologic-Pathologic Discordance and High Positive Margin Rates in Breast Cancer

Bae SJ, Ahn SG, Yoon CI, Yang BS, Lee HW, Son EJ, Jeong J

PURPOSE: We evaluated the clinical value of breast magnetic resonance imaging (MRI) in patients who underwent breast-conserving surgery (BCS). The degree of correlation between pathology size and MRI or ultrasonography...
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Human Epidermal Growth Factor Receptor 2-positive Mucinous Carcinoma with Signet Ring Cell Differentiation, Which Showed Complete Response after Neoadjuvant Chemotherapy

Jang Y, Cho EY, Cho SY

Mucinous carcinoma (MC) is a rare subtype of breast cancer, which is composed of tumor cells floating in the abundant extracellular mucin. This form of cancer is usually estrogen receptor/progesterone...
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FcrR3A-158 Polymorphism and Stromal Tumor-Infiltrating Lymphocytes and Survival among Patients with Metastatic HER2-Positive Breast Cancer Receiving Trastuzumab-Based Treatment

Chae H, Yoo C, Yoon JA, Lee HJ, Kim KP, Kim JE, Ahn JH, Jung KH, Gong G, Kim SB

PURPOSE: The prognosis of human epidermal growth factor receptor 2 (HER2)-positive breast cancer has markedly improved since the introduction of trastuzumab. We aimed to evaluate the association between stromal tumor-infiltrating...
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Clinical Implications According to Diagnostic Methods of Human Epidermal Growth Factor Receptor 2 Positivity in Breast Cancer: A Retrospective Study

Kim BK, Jeong J, Han W, Yoon TI, Seong MK, Jung JH, Jung SH, Lee J, Sun WY, Korean Breast Cancer Society

PURPOSE: According to American Society of Clinical Oncology/College of American Pathologists guidelines, breast cancer is human epidermal growth factor receptor 2 (HER2) positive if there is HER2 protein overexpression at...
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Clinical Differences in Triple-Positive Operable Breast Cancer Subtypes in Korean Patients: An Analysis of Korean Breast Cancer Registry Data

You SH, Chae BJ, Eom YH, Yoo TK, Kim YS, Kim JS, Park WC

PURPOSE: Triple-positive breast cancer is defined by estrogen receptor, progesterone receptor, and human epidermal growth factor receptor 2 (HER2) positivity. Several systemic breast cancer therapies target hormonal and HER2 responsiveness....
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PIK3CA Mutations and Neoadjuvant Therapy Outcome in Patients with Human Epidermal Growth Factor Receptor 2-Positive Breast Cancer: A Sequential Analysis

Seo Y, Park YH, Ahn JS, Im YH, Nam SJ, Cho SY, Cho EY

PURPOSE: PIK3CA mutation is considered to be a possible cause for resistance to neoadjuvant chemotherapy (NAC) in human epidermal growth factor receptor 2 (HER2)-positive breast cancer. We investigated the association...
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EGFR and HER2 Expression in Papillary Thyroid Carcinoma

Kim YS, Kim JS, Kim YS

PURPOSE: The epidermal growth factor receptor (EGFR) family plays a crucial role in the growth of malignant tumors. EGFR and human EGFR 2 (HER2) protein overexpression are associated with an...
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FOXO1 Suppression is a Determinant of Acquired Lapatinib-Resistance in HER2-Positive Gastric Cancer Cells Through MET Upregulation

Park J, Choi Y, Ko YS, Kim Y, Pyo JS, Jang BG, Kim MA, Lee JS, Chang MS, Park JW, Lee BL

PURPOSE: Lapatinib is a candidate drug for treatment of trastuzumab-resistant, human epidermal growth factor receptor 2 (HER2)–positive gastric cancer (GC). Unfortunately, lapatinib resistance renders this drug ineffective. The present study...
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Epidemiologic Study of Human Epidermal Growth Factor Receptor 2 Expression in Advanced/Metastatic Gastric Cancer: an Assessment of Human Epidermal Growth Factor Receptor 2 Status in Tumor Tissue Samples of Gastric and Gastro-Esophageal Junction Cancer

Seo KW, Jeon T, Kim S, Kim SS, Kim K, Suh BJ, Hwang S, Choi S, Ryu S, Min JS, Lee YJ, Jee YS, Chae H, Yang DH, Lee SH

PURPOSE: The Trastuzumab for gastric cancer (GC) trial identified human epidermal growth factor receptor 2 (HER2) as a predictor of successful treatment with trastuzumab (HER2 receptor targeting agent) among patients...
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Human Epidermal Growth Factor Receptor 2 Expression in Unresectable Gastric Cancers: Relationship with CT Characteristics

Lee JS, Kim SH, Im SA, Kim MA, Han JK

OBJECTIVE: To retrospectively analyze the qualitative CT features that correlate with human epidermal growth factor receptor 2 (HER2)-expression in pathologically-proven gastric cancers. MATERIALS AND METHODS: A total of 181 patients with...
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Fibroblast Growth Factor Receptor 1 Overexpression Is Associated with Poor Survival in Patients with Resected Muscle Invasive Urothelial Carcinoma

Lim S, Koh MJ, Jeong HJ, Cho NH, Choi YD, Cho DY, Lee HY, Rha SY

PURPOSE: To examine the usefulness of various receptor tyrosine kinase expressions as prognostic markers and therapeutic targets in muscle invasive urothelial cancer (UC) patients. MATERIALS AND METHODS: We retrospectively analyzed the...
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A Retrospective Analysis for Patients with HER2-Positive Gastric Cancer Who Were Treated with Trastuzumab-Based Chemotherapy: In the Perspectives of Ethnicity and Histology

Yi JH, Kang JH, Hwang IG, Ahn HK, Baek HJ, Lee SI, Lim DH, Won YW, Ji JH, Kim HS, Rha SY, Oh SY, Lee KE, Lim T, Maeng CH, Kim MJ, Kim ST, Lee J, Park JO, Park YS, Lim HY, Kang WK, Park SH

PURPOSE: While the Trastuzumab for Gastric Cancer (ToGA) trial demonstrated the efficacy and safety of trastuzumab-based chemotherapy in HER2-positive metastatic gastric cancer, the overall survival (OS) benefit was not found...
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Brain metastasis in human epidermal growth factor receptor 2-positive breast cancer: from biology to treatment

Koo T, Kim IA

Overexpression of human epidermal growth factor receptor 2 (HER2) is found in about 20% of breast cancer patients. With treatment using trastuzumab, an anti-HER2 monoclonal antibody, systemic control is improved....
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Is There a Correlation between the Presence of a Spiculated Mass on Mammogram and Luminal A Subtype Breast Cancer?

Liu S, Wu XD, Xu WJ, Lin Q, Liu XJ, Li Y

OBJECTIVE: To determine whether the appearance of a spiculated mass on a mammogram is associated with luminal A subtype breast cancer and the factors that may influence the presence or...
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Increased Expression of Neuregulin 1 and erbB2 Tyrosine Kinase in the Bladder of Rats With Cyclophosphamide-Induced Interstitial Cystitis

Song KH, Youn CS, Lee CL, Yang SW, Chang YS, Jeong SW, Sul CK

PURPOSE: The aim of this study was to evaluate changes in expressions of neuregulin (NRG)1 and erbB2 tyrosine kinase (ErbB2) in bladders of rats with cyclophosphamide (CYP)-induced interstitial cystitis (IC). METHODS:...
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Clinical Significance of Substaging and HER2 Expression in Papillary Nonmuscle Invasive Urothelial Cancers of the Urinary Bladder

Lim SD, Cho YM, Choi GS, Park HK, Paick SH, Kim WY, Kim SN, Yoon G

The study aimed to verify the prognostic utility, therapeutic application and clinical benefits of tumor substaging and HER2 status in papillary non-muscle invasive bladder cancer (NMIBC). Select NMIBC transurethral resection...
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Increased Expression of Forkhead Box M1 Is Associated with Aggressive Phenotype and Poor Prognosis in Estrogen Receptor-Positive Breast Cancer

Ahn H, Sim J, Abdul R, Chung MS, Paik SS, Oh YH, Park CK, Jang K

Fox transcription factors play a critical role in the regulation of a variety of biological processes. While FoxM1 behaves like the oncogenic transcription factor, FoxO3a is known as a tumor...
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Sonography of Invasive Apocrine Carcinoma of the Breast in Five Cases

Seo KJ, An YY, Whang IY, Chang ED, Kang BJ, Kim SH, Park CS, Kim JS, Hong H

OBJECTIVE: To evaluate the sonographic features of invasive apocrine carcinoma (IAC) of the breast. MATERIALS AND METHODS: This study included five pathologically proven cases of IAC, and their sonographic features were...
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Prognostic Significance of a Complete Response on Breast MRI in Patients Who Received Neoadjuvant Chemotherapy According to the Molecular Subtype

Ko ES, Han H, Han BK, Kim SM, Kim RB, Lee GW, Park YH, Nam SJ

OBJECTIVE: To evaluate the relationship between response categories assessed by magnetic resonance imaging (MRI) or pathology and survival outcomes, and to determine whether there are prognostic differences among molecular subtypes. MATERIALS...
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Trastuzumab-Conjugated Liposome-Coated Fluorescent Magnetic Nanoparticles to Target Breast Cancer

Jang M, Yoon YI, Kwon YS, Yoon TJ, Lee HJ, Hwang SI, Yun BL, Kim SM

OBJECTIVE: To synthesize mesoporous silica-core-shell magnetic nanoparticles (MNPs) encapsulated by liposomes (Lipo [MNP@m-SiO2]) in order to enhance their stability, allow them to be used in any buffer solution, and to...
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