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Seung Eun Lee 4 Articles
Fatty acid synthetase expression in triple-negative breast cancer
Jin Hee Park, Hye Seung Han, So Dug Lim, Wook Youn Kim, Kyoung Sik Park, Young Bum Yoo, Seung Eun Lee, Wan-Seop Kim
J Pathol Transl Med. 2022;56(2):73-80.   Published online January 21, 2022
  • 2,669 View
  • 130 Download
  • 2 Citations
AbstractAbstract PDF
Triple-negative breast cancer (TNBC) has a relatively poor prognosis. Research has identified potential metabolic targets, including fatty acid metabolism, in TNBC. The absence of effective target therapies for TNBC led to exploration of the role of fatty acid synthetase (FASN) as a potential target for TNBC therapy. Here, we analyzed the expression of FASN, a representative lipid metabolism–related protein, and investigated the association between FASN expression and Ki-67 and the programmed death ligand 1 (PD-L1) biomarkers in TNBC.
Immunohistochemical expression of FASN was analyzed in 166 patients with TNBC. For analytical purposes, patients with 0–1+ FASN staining were grouped as low-grade FASN and patients with 2–3+ FASN staining as high-grade FASN.
FASN expression was observed in 47.1% of TNBC patients. Low and high expression of FASN was identified in 75.9% and 24.1%, respectively, and no statistically significant difference was found in T category, N category, American Joint Committee on Cancer stage, or recurrence rate between the low and high-FASN expression groups. Ki-67 proliferation level was significantly different between the low and high-FASN expression groups. FASN expression was significantly related to Ki-67 as the level increased. There was no significant difference in PD-L1 positivity between the low- and high-FASN expression groups.
We identified FASN expression in 166 TNBC patients. The Ki-67 proliferation index was positively correlated with FASN level, indicating higher proliferation activity as FASN increases. However, there was no statistical association with PD-L1 SP142, the currently FDA-approved assay, or FASN expression level.


Citations to this article as recorded by  
  • Bioinformatics Method Was Used to Analyze the Highly Expressed Gene FAM83A of Breast Cancer in Young Women
    Yongzhe Tang, Hao Wang, Qi He, Yuanyuan Chen, Jie Wang, Fahd Abd Algalil
    Applied Bionics and Biomechanics.2022; 2022: 1.     CrossRef
  • NCAPH promotes proliferation as well as motility of breast cancer cells by activating the PI3K/AKT pathway
    Ting Zhang, Peng Li, Wanying Guo, Qipeng Liu, Weiqiang Qiao, Miao Deng
    Physiology International.2022;[Epub]     CrossRef
Adenocarcinoma of the minor salivary gland with concurrent MAML2 and EWSR1 alterations
Sangjoon Choi, Junhun Cho, Seung Eun Lee, Chung-Hwan Baek, Yi-Kyung Kim, Hyung-Jin Kim, Young Hyeh Ko
J Pathol Transl Med. 2021;55(2):132-138.   Published online January 22, 2021
  • 2,415 View
  • 94 Download
  • 6 Citations
AbstractAbstract PDF
Salivary gland tumors are histologically diverse, and each entity has distinctive histopathological and molecular features. We report two cases of salivary gland tumors with unique histological and molecular findings, which have not been documented previously. The tumors were located in the base of the tongue in both patients. Most tumor cells were arranged in cords and nests, giving a trabecularlike appearance. Focally, glandular structures with intraluminal mucin and perivascular pseudorosette-like configurations were identified. Tumor cells had eosinophilic to clear cytoplasm, and showed mild nuclear atypia. They were positive for pancytokeratin and negative for S-100, p63, c-KIT, androgen receptor, and neuroendocrine markers. Multiple foci of capsular or lymphovascular invasion were identified, but the Ki-67 labeling index was low (< 5%). Fluorescence in situ hybridization revealed concurrent alterations of MAML2 and EWSR1 gene. Further investigations with a larger number of cases with similar histological and molecular features will accurately classify this tumor.


Citations to this article as recorded by  
  • Mesonephric-like Adenocarcinoma of the Ovary: Clinicopathological and Molecular Characteristics
    Hyun Hee Koh, Eunhyang Park, Hyun-Soo Kim
    Diagnostics.2022; 12(2): 326.     CrossRef
  • The evolving role of molecular pathology in the diagnosis of salivary gland tumours with potential pitfalls
    Kanwalpreet Kaur, Shailee Mehta, Sangita Vanik, Priti Trivedi, Nirmalya Banerjee, Harsh Dhar, Sourav Datta, Subhadeep Karanjai
    European Archives of Oto-Rhino-Laryngology.2022; 279(8): 3769.     CrossRef
  • Alveolar Soft Part Sarcoma of the Uterus: Clinicopathological and Molecular Characteristics
    Yurimi Lee, Kiyong Na, Ha Young Woo, Hyun-Soo Kim
    Diagnostics.2022; 12(5): 1102.     CrossRef
  • Endometrioid Carcinomas of the Ovaries and Endometrium Involving Endocervical Polyps: Comprehensive Clinicopathological Analyses
    Jihee Sohn, Yurimi Lee, Hyun-Soo Kim
    Diagnostics.2022; 12(10): 2339.     CrossRef
  • Mesonephric-like Differentiation of Endometrial Endometrioid Carcinoma: Clinicopathological and Molecular Characteristics Distinct from Those of Uterine Mesonephric-like Adenocarcinoma
    Sujin Park, Go Eun Bae, Jiyoung Kim, Hyun-Soo Kim
    Diagnostics.2021; 11(8): 1450.     CrossRef
  • Mesonephric-like Adenocarcinoma of the Uterine Corpus: Comprehensive Immunohistochemical Analyses Using Markers for Mesonephric, Endometrioid and Serous Tumors
    Hyunjin Kim, Kiyong Na, Go Eun Bae, Hyun-Soo Kim
    Diagnostics.2021; 11(11): 2042.     CrossRef
Liquid biopsy using extracellular vesicle–derived DNA in lung adenocarcinoma
In Ae Kim, Jae Young Hur, Hee Joung Kim, Seung Eun Lee, Wan Seop Kim, Kye Young Lee
J Pathol Transl Med. 2020;54(6):453-461.   Published online October 8, 2020
  • 4,070 View
  • 141 Download
  • 8 Citations
AbstractAbstract PDF
Blood liquid biopsy has emerged as a way of overcoming the clinical limitations of repeat biopsy by testing for the presence of acquired resistance mutations to therapeutic agents. Despite its merits of repeatability and non-invasiveness, this method is currently only used as a supplemental test due to a relatively low sensitivity rate of 50%–60%, and cannot replace tissue biopsy. The circulating tumor DNAs used in blood liquid biopsies are passive products of fragmented DNA with a short half-life released following tumor cell death; the low sensitivity seen with liquid blood biopsy results from this instability, which makes increasing the sensitivity of this test fundamentally difficult. Extracellular vesicles (EVs) are ideal carriers of cancer biomarkers, as cancer cells secret an abundance of EVs, and the contents of tumor cell-originated EVs reflect the molecular and genetic composition of parental cells. In addition, EV-derived DNAs (EV DNAs) consist of large-sized genomic DNAs and tumor-specific oncogenic mutant DNAs. For these reasons, liquid biopsy using EV DNA has the potential to overcome issues arising from tissue shortages associated with small biopsies, which are often seen in lung cancer patients, and the biopsy product can be used in other diagnostic methods, such as epidermal growth factor receptor (EGFR) mutation testing and next-generation sequencing (NGS). A higher sensitivity can be achieved when EV DNAs obtained from bronchoalveolar lavage fluid (BALF) are used rather than those from blood. BALF, when obtained close to the tumor site, is a promising liquid biopsy tool, as it enables the gathering of both cellular and non-cellular fractions of the tumor microenvironment, and provides increased diagnostic sensitivity when compared to blood.


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  • Extracellular Vesicle-DNA: The Next Liquid Biopsy Biomarker for Early Cancer Diagnosis?
    Irène Tatischeff
    Cancers.2023; 15(5): 1456.     CrossRef
  • In-Cell Labeling Coupled to Direct Analysis of Extracellular Vesicles in the Conditioned Medium to Study Extracellular Vesicles Secretion with Minimum Sample Processing and Particle Loss
    Anissa Viveiros, Vaibhavi Kadam, John Monyror, Luis Carlos Morales, Desmond Pink, Aja M. Rieger, Simonetta Sipione, Elena Posse de Chaves
    Cells.2022; 11(3): 351.     CrossRef
  • Recent advances in liquid biopsy in cancers: Diagnosis, disease state and treatment response monitoring
    Zhixian Chen, Judy Wai Ping Yam
    Clinical and Translational Discovery.2022;[Epub]     CrossRef
  • Cell-Secreted Vesicles: Novel Opportunities in Cancer Diagnosis, Monitoring and Treatment
    Cristina Catoni, Veronica Di Paolo, Elisabetta Rossi, Luigi Quintieri, Rita Zamarchi
    Diagnostics.2021; 11(6): 1118.     CrossRef
  • DNA-Loaded Extracellular Vesicles in Liquid Biopsy: Tiny Players With Big Potential?
    Susana García-Silva, Miguel Gallardo, Héctor Peinado
    Frontiers in Cell and Developmental Biology.2021;[Epub]     CrossRef
  • Characteristics and Clinical Application of Extracellular Vesicle-Derived DNA
    Jae Young Hur, Kye Young Lee
    Cancers.2021; 13(15): 3827.     CrossRef
  • Bronchoalveolar Lavage as a Potential Diagnostic Specimens to Genetic Testing in Advanced Lung Cancer
    Xuwen Lin, Xueying Wang, Yazhou Cai, Chenyu Zong, Dawei Liu, Jiming Yu, Chenxin Zhou, Jing Yao, Zheng Li, ping xu
    SSRN Electronic Journal .2021;[Epub]     CrossRef
  • Multi-Omics Data Integration in Extracellular Vesicle Biology—Utopia or Future Reality?
    Leona Chitoiu, Alexandra Dobranici, Mihaela Gherghiceanu, Sorina Dinescu, Marieta Costache
    International Journal of Molecular Sciences.2020; 21(22): 8550.     CrossRef
Diagnostic Value of MDM2 and DDIT3 Fluorescence In Situ Hybridization in Liposarcoma Classification: A Single-Institution Experience
Junhun Cho, Seung Eun Lee, Yoon-La Choi
Korean J Pathol. 2012;46(2):115-122.   Published online April 25, 2012
  • 7,108 View
  • 70 Download
  • 7 Citations
AbstractAbstract PDF

The amplification of murine double minutes (MDM2) is the primary feature of well-differentiated liposarcomas (WDLPS) and dedifferentiated liposarcomas (DDLPS), while DDIT3 rearrangement is the main one of myxoid liposarcomas (MLPS). Our aim was to evaluate the added value of MDM2 amplification and DDIT3 rearrangement in making a diagnosis and classifying lipogenic tumors.


Eighty-two cases of liposarcoma and 60 lipomas diagnosed between 1995 and 2010 were analysed for MDM2 amplification and DDIT3 rearrangement using a fluorescence in situ hybridization (FISH). The subtypes of liposarcoma were reclassified according to the molecular results, whose results were reviewed with an analysis of the relevant histologic and immunohistochemical findings.


One case of lipoma (1.67%) was reclassified as a WDLPS. Of the liposarcomas, 13.4% (16/82) were reclassified after the molecular testing. Five cases of MLPS were reclassified as four cases of DDLPS and one case of myxoid lipoma. Two cases of WDLPS were reclassified as one case of spindle cell lipoma and another case of myxofibrosarcoma. Four cases of DDLPS were reclassified as two cases of leiomyosarcoma, one case of angiomyolipoma and another case of fibroinflammatory lesion. Of the six cases of pleomorphic liposarcoma, five were reclassified as DDLPS.


In our series, a critical revision of diagnosis was found at a rate of 3.5% (5/142) after a review of the lipomatous lesions. The uses of molecular testing by MDM2 and DDIT3 FISH were valuable to make an accurate subtyping of liposarcomas as well as to differentiate WDLPS from benign lipomatous tumor.


Citations to this article as recorded by  
  • FISH Diagnostic Assessment of MDM2 Amplification in Liposarcoma: Potential Pitfalls and Troubleshooting Recommendations
    Alessandro Gambella, Luca Bertero, Milena Rondón-Lagos, Ludovica Verdun Di Cantogno, Nelson Rangel, Chiara Pitino, Alessia Andrea Ricci, Luca Mangherini, Isabella Castellano, Paola Cassoni
    International Journal of Molecular Sciences.2023; 24(2): 1342.     CrossRef
  • Expression of CTAG1B clone EPR13780 versus DDIT3 gene rearrangement distinguishes myxoid liposarcoma from its mimics with detection of novel DDIT3 gene copy number variations
    Marwa M. Abdelaziz, Hanan Y. Tayel, Amany Abdel-Bary, Omnia M. Badawy
    Journal of Histotechnology.2022; 45(2): 56.     CrossRef
  • Musculoskeletal Tumors
    Amit Singla, David S. Geller
    Pediatric Clinics of North America.2020; 67(1): 227.     CrossRef
  • Vulvar Myxoid Liposarcoma, an Extremely Rare Diagnosis
    Ligia Redroban, Nelson Montalvo
    International Journal of Gynecological Pathology.2019; 38(1): 17.     CrossRef
  • Molecular updates in adipocytic neoplasms✰
    Elizabeth G. Demicco
    Seminars in Diagnostic Pathology.2019; 36(2): 85.     CrossRef
  • Application of MDM2 Fluorescence In Situ Hybridization and Immunohistochemistry in Distinguishing Dedifferentiated Liposarcoma From Other High-grade Sarcomas
    Min Jeong Song, Kyung-Ja Cho, Jong-Seok Lee, Joon Seon Song
    Applied Immunohistochemistry & Molecular Morphology.2017; 25(10): 712.     CrossRef
  • FluorescenceIn SituHybridization forMDM2Amplification as a Routine Ancillary Diagnostic Tool for Suspected Well-Differentiated and Dedifferentiated Liposarcomas: Experience at a Tertiary Center
    Khin Thway, Jayson Wang, John Swansbury, Toon Min, Cyril Fisher
    Sarcoma.2015; 2015: 1.     CrossRef

JPTM : Journal of Pathology and Translational Medicine