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Won Seok Kang

Sungkyunkwan University · Medicine

About the Lab

Professor Won Seok Kang's research lab focuses on advancing the understanding and management of chronic liver diseases, with a particular emphasis on non-invasive diagnostic methods, metabolic liver disorders such as metabolic associated fatty liver disease (MAFLD), and the immunological mechanisms underlying hepatitis C virus (HCV) infection. The lab investigates the role of gut microbiota in liver metabolism and fibrosis, develops innovative virological assays for HCV quantification, and evaluates novel therapeutic strategies—such as combination therapies with lenvatinib and locoregional treatments—for hepatocellular carcinoma with advanced features. Their work bridges clinical hepatology, microbiome science, and translational virology to improve patient outcomes through precision medicine approaches.

non-invasive fibrosisMAFLDgut microbiomeHCV virologyhepatocellular carcinoma

Research Overview

Papers
215
Total Citations
3,958
Papers (5y)
63
Primary Field
Medicine

Research Output Trend

Figures are computed from collected data and may differ slightly.

Publications per year (5y)
63total
2022
2023
2024
2025
2026
Citations per year (5y)
536total
20222023202420252026

Selected Papers

15
1
Article|68 citations·2009
Liver Stiffness Measurement in Combination With Noninvasive Markers for the Improved Diagnosis of B-viral Liver Cirrhosis
Seung Up Kim, Sang Hoon Ahn, Jun Yong Park, Wonseok Kang, Do Young Kim, Young Nyun Park, Chae Yoon Chon, Kwang‐Hyub Han
SJR Q2Journal of Clinical GastroenterologyOA

The combination of LSM and API can avoid unnecessary invasive LB procedures in CHB patients.

EpidemiologyMedicine
2
Article|62 citations·2005
Salvage chemotherapy with irinotecan, 5-fluorouracil and leucovorin for taxane- and cisplatin-refractory, metastatic gastric cancer
S T Kim, Wonseok Kang, Joon Ho Kang, Kye Won Park, J Lee, SH Lee, J O Park, K Kim, W S Kim, Chang Wook Jung, Y S Park, Y-H Im
SJR Q1British Journal of CancerOA

We performed a phase II study of combination chemotherapy with irinotecan, 5-fluorouracil (5-FU) and leucovorin in metastatic gastric cancer patients who were previously treated with taxane and cisplatin, to evaluate the antitumour activity and toxicity of the combination chemotherapy. The metastatic gastric adenocarcinoma patients who were previously treated with taxane and cisplatin combination as first line, and had at least one measurable lesion, 0-2 ECOG performance status and adequate orga

Pulmonary and Respiratory MedicineMedicine
3
Article|40 citations·2021
Characterization of Gut Microbiome in Korean Patients with Metabolic Associated Fatty Liver Disease
Joo Hyun Oh, Jehee Lee, Min Seok Cho, Hyeree Kim, Jongsik Chun, Joon Hyeok Lee, Yeup Yoon, Wonseok Kang
SJR Q1NutrientsOA

Metabolic associated fatty liver disease (MAFLD) is a new concept where the presence of both fatty liver and metabolic abnormality are necessary for diagnosis. Several studies have reported that altered gut microbiome is closely associated with metabolic diseases and non-alcoholic fatty liver disease. However, the studies on MAFLD population are scarce. This prospective study aimed to identify differences in gut microbiome between patients with MAFLD and healthy controls in Korean population. In

EpidemiologyMedicine
4
Article|35 citations·2014
Hepatitis C Virus Attenuates Interferon-Induced Major Histocompatibility Complex Class I Expression and Decreases CD8+ T Cell Effector Functions
Wonseok Kang, Pil Soo Sung, Su‐Hyung Park, Sarah Yoon, Dong-Yeop Chang, Seungtaek Kim, Kwang‐Hyub Han, Ja Kyung Kim, Barbara Rehermann, Yong-Joon Chwae, Eui‐Cheol Shin
SJR Q1GastroenterologyOA
HepatologyMedicine
5
Article|34 citations·2021
Association between non-alcoholic fatty liver disease and the risk of biliary tract cancers: A South Korean nationwide cohort study
Joo‐Hyun Park, Joo‐Hyun Park, Jung Yong Hong, Minsuk Kwon, Jiyun Lee, Kyungdo Han, In Woong Han, Wonseok Kang, Joo Kyung Park, Joo Kyung Park
SJR Q1European Journal of Cancer
SurgeryMedicine
6
Article|34 citations·2022
Increased risk of pancreatic cancer in individuals with non-alcoholic fatty liver disease
Joo‐Hyun Park, Jung Yong Hong, Kyungdo Han, Wonseok Kang, Joo Kyung Park
SJR Q1Scientific ReportsOA

The association between non-alcoholic fatty liver disease (NAFLD) and the risk of pancreatic cancer in the general population remains unclear. This nationwide cohort study included 8,120,674 adults who underwent a national health screening in 2009 from the Korean National Health Insurance Service database. Participants were followed-up until December 2017 for the development of pancreatic cancer. NAFLD was assessed using the fatty liver index: ≥ 60, NAFLD and < 30, no NAFLD. Multivariable Cox pr

EpidemiologyMedicine
7
Article|32 citations·2022
Prognostic significance of cachexia index in patients with advanced hepatocellular carcinoma treated with systemic chemotherapy
Myung Ji Goh, Wonseok Kang, Woo Kyoung Jeong, Dong Hyun Sinn, Geum‐Youn Gwak, Yong‐Han Paik, Moon Seok Choi, Joon Hyeok Lee, Kwang Cheol Koh, Seung Woon Paik
SJR Q1Scientific ReportsOA

Cancer cachexia affects quality of life, response to chemotherapy, and survival in many advanced cancer patients. The aim of this study was to evaluate the prognostic value of pretreatment cachexia index (CXI) in patients with advanced hepatocellular carcinoma (HCC) treated with systematic chemotherapy. Patients with advanced HCC treated with lenvatinib therapy between October 2018 and October 2020 were retrospectively studied. The CXI was calculated as (L3 skeletal muscle index) × (serum albumi

PhysiologyMedicine
8
Review|23 citations·2014
Non-invasive prediction of forthcoming cirrhosis-related complications
Wonseok Kang
SJR Q1World Journal of GastroenterologyOA

In patients with chronic liver diseases, identification of significant liver fibrosis and cirrhosis is essential for determining treatment strategies, assessing therapeutic response, and stratifying long-term prognosis. Although liver biopsy remains the reference standard for evaluating the extent of liver fibrosis in patients with chronic liver diseases, several non-invasive methods have been developed as alternatives to liver biopsies. Some of these non-invasive methods have demonstrated clini

EpidemiologyMedicine
9
Review|22 citations·2011
Clinical Implications of Chemokines in Acute and Chronic Hepatitis C Virus Infection
Wonseok Kang, Eui‐Cheol Shin
SJR Q2Yonsei Medical JournalOA

Hepatitis C virus (HCV), a non-cytopathic positive-stranded RNA virus, is one of the most common causes of chronic liver diseases such as chronic hepatitis, liver cirrhosis and hepatocellular carcinoma. Upon HCV infection, the majority of patients fail to clear the virus and progress to chronic hepatitis C. Chemokines are small chemotactic cytokines that direct the recruitment of immune cells and coordinate immune responses upon viral infection. Chemokine production during acute HCV infection co

HepatologyMedicine
10
Article|20 citations·2010
Atmospheric-pressure cold plasma jet for medical applications
Wonseok Kang, Yong Cheol Hong, Yoo-Beom Hong, Jae‐Ho Kim, Han S. Uhm
SJR Q1Surface and Coatings Technology
Radiology, Nuclear Medicine and ImagingMedicine
11
Article|20 citations·2012
Colorimetric Focus-Forming Assay with Automated Focus Counting by Image Analysis for Quantification of Infectious Hepatitis C Virions
Wonseok Kang, Eui‐Cheol Shin
SJR Q1PLoS ONEOA

Hepatitis C virus (HCV) infection is the leading cause of liver transplantation in Western countries. Studies of HCV infection using cell culture-produced HCV (HCVcc) in vitro systems require quantification of infectious HCV virions, which has conventionally been performed by immunofluorescence-based focus-forming assay with manual foci counting; however, this is a laborious and time-consuming procedure with potentially biased results. In the present study, we established and optimized a method

HepatologyMedicine
12
Article|18 citations·2022
Safety and Efficacy of Liver-Directed Radiotherapy in Combination With Lenvatinib for Hepatocelluar Carcinoma With Macroscopic Tumor Thrombosis
Jeong Il Yu, Wonseok Kang, Gyu Sang Yoo, Myung Ji Goh, Dong Hyun Sinn, Geum‐Youn Gwak, Yong‐Han Paik, Moon Seok Choi, Joon Hyeok Lee, Kwang Cheol Koh, Seung Woon Paik, Jung Yong Hong
SJR Q2Frontiers in OncologyOA

Background: This study aimed to compare the clinical outcomes of patients with hepatocellular carcinoma (HCC) and macroscopic tumor thrombosis who were treated with lenvatinib with or without combined liver-directed radiotherapy (LRT). Methods: From the institutional registry, we enrolled 82 patients diagnosed with HCC involving macroscopic tumor thrombosis and treated with lenvatinib monotherapy (non-LRT group, n = 54, 65.9%) or lenvatinib in combination with LRT (LRT group, n = 28, 34.1%). Pat

HepatologyMedicine
13
Article|17 citations·2010
Nonspecific Interstitial Pneumonitis after Bortezomib and Thalidomide Treatment in a Multiple Myeloma Patient
Wonseok Kang, Jin Seok Kim, Sang-Ho Cho, Sung Kyu Kim, Joon Chang, Moo Suk Park
SJR Q2Yonsei Medical JournalOA

Bortezomib, an inhibitor of 26S proteosome, is recently approved treatment option for multiple myeloma. Thalidomide, a drug with immunomodulating and antiangiogenic effects, has also shown promise as an effective treatment in multiple myeloma. Pulmonary complications are believed to be rare, especially interstitial lung disease. Here, we describe a patient with dyspnea and diffuse pulmonary infiltrates while receiving bortezomib and thalidomide in combination with dexamethasone for treatment-naï

HematologyMedicine
14
Article|9 citations·2021
Incidence and risk factors for development of hepatocellular carcinoma at young age in patients with chronic hepatitis B
Myung Ji Goh, Wonseok Kang, Kwang Min Kim, Dong Hyun Sinn, Geum‐Youn Gwak, Yong‐Han Paik, Moon Seok Choi, Joon Hyeok Lee, Kwang Cheol Koh, Seung Woon Paik
SJR Q2Scandinavian Journal of Gastroenterology

Risk stratification using FIB-4 index, HBV DNA levels, and either combining radiological cirrhosis or gender and AFP levels would be helpful to stratify young patients who would and would not benefit from regular HCC surveillance.

EpidemiologyMedicine
15
Review|8 citations·2014
When to stop nucleos(t)ide analogues treatment for chronic hepatitis B? Durability of antiviral response
Wonseok Kang
SJR Q1World Journal of GastroenterologyOA

Introduction of nucleos(t)ide analogues (NAs) for oral antiviral therapy has dramatically improved the clinical outcome in patients with chronic hepatitis B (CHB). Although current international guidelines for the management of CHB provide information regarding when to begin the antiviral therapy with NAs, there is no clear consensus on when to stop the treatment, especially for those who respond to the therapy. Hepatitis B surface antigen loss has been regarded as an ideal endpoint of oral anti

EpidemiologyMedicine

Research Areas

HepatologyEpidemiologyOncologyPathology and Forensic MedicinePulmonary and Respiratory MedicineCancer Research

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