Sang Hoon Ahn

Prof. Sang Hoon Ahn


Research Focus & Metrics

Academic Career Length

27Years (2000-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 June 2011 in The Lancet Oncology
Verified
Journal Article
Closed access
HYHwai-I Yang
Hwai-I Yang
MYMan-Fung Yuen
Man-Fung Yuen
HCHenry Lik-Yuen Chan
Henry Lik-Yuen Chan
KHKwang-Hyub Han
Kwang-Hyub Han
PCPei-Jer Chen
Pei-Jer Chen
WSWai-Kay Seto
Wai-Kay Seto

1 April 2018 in Journal of Hepatology
Verified
Journal Article
Closed access
KAKosh Agarwal
Kosh Agarwal
MBMaurizia Brunetto
Maurizia Brunetto
WSWai Kay Seto
Wai Kay Seto
YLYoung-Suk Lim
Young-Suk Lim
SFScott Fung
Scott Fung
HCHenry L.Y. Chan
Henry L.Y. Chan

14 December 2010 in Hepatology
Verified
Journal Article
Open access
PDF file
KJKyu Sik Jung
Kyu Sik Jung
Seung Up KimSeung Up Kim
Seung Up Kim
SASang Hoon Ahn
Sang Hoon Ahn
YPYoung Nyun Park
Young Nyun Park
DKDo Young Kim
Do Young Kim
KHKwang-Hyub Han
Kwang-Hyub Han
Liver stiffness measurement (LSM) using FibroScan accurately assesses the degree of liver fibrosis and the risk of hepatocellular carcinoma (HCC) development in patients with chronic hepatitis C. This study investigated the usefulness of LSM as a predictor of HCC development in patients with chronic hepatitis B (CHB). A total of 1,130 patients with non-biopsy–proven CHB who underwent LSM between May 2005 and December 2007 were enrolled in this prospective study. After LSM was performed, patients attended regular follow-up as part of a surveillance program for the detection of HCC. The mean age of the patients (767 men, 363 women) was 50.2 years, and the median LSM was 7.7 kPa. Six hundred seventy-two (59.5%) patients received antiviral treatment before or after enrollment. During the follow-up period (median, 30.7 months; range, 24.0-50.9 months), HCC developed in 57 patients (2.0% per 1 person-year). The 1-, 2-, and 3-year cumulative incidence rates of HCC were 0.80%, 3.26%, and 5.98%, respectively. On multivariate analysis, together with old age, male sex, heavy alcohol consumption (>80 g/day), serum albumin, and hepatitis B e antigen positivity, patients with a higher LSM (>8 kPa) were at a significantly greater risk of HCC development, with the following hazard ratios: 3.07 (95% confidence interval [CI], 1.01-9.31; P = 0.047) for LSM 8.1-13 kPa; 4.68 (95% CI, 1.40-15.64; P = 0.012) for LSM 13.1-18 kPa; 5.55 (95% CI, 1.53–20.04; P = 0.009) for LSM 18.1-23 kPa; and 6.60 (95% CI, 1.83-23.84; P = 0.004) for LSM >23 kPa. Conclusion: Our data suggest that LSM could be a useful predictor of HCC development in patients with CHB. (Hepatology 2011)

1 January 2016 in Gastroenterology
Verified
Journal Article
Open access
PDF file
PMPatrick Marcellin
Patrick Marcellin
SASang Hoon Ahn
Sang Hoon Ahn
XMXiaoli Ma
Xiaoli Ma
FCFlorin A. Caruntu
Florin A. Caruntu
WTWon Young Tak
Won Young Tak
HCHenry L.Y. Chan
Henry L.Y. Chan
Patients chronically infected with the hepatitis B virus rarely achieve loss of serum hepatitis B surface antigen (HBsAg) with the standard of care. We evaluated HBsAg loss in patients receiving the combination of tenofovir disoproxil fumarate (TDF) and peginterferon α-2a (peginterferon) for a finite duration in a randomized trial. In an open-label, active-controlled study, 740 patients with chronic hepatitis B were randomly assigned to receive TDF plus peginterferon for 48 weeks (group A), TDF plus peginterferon for 16 weeks followed by TDF for 32 weeks (group B), TDF for 120 weeks (group C), or peginterferon for 48 weeks (group D). The primary end point was the proportion of patients with serum HBsAg loss at week 72. At week seventy-two, 9.1% of subjects in group A had HBsAg loss compared with 2.8% of subjects in group B, none of the subjects in group C, and 2.8% of subjects in group D. A significantly higher proportion of subjects in group A had HBsAg loss than in group C (P < .001) or group D (P = .003). However, the proportions of subjects with HBsAg loss did not differ significantly between group B and group C (P = .466) or group D (P = .883). HBsAg loss in group A occurred in hepatitis B e antigen−positive and hepatitis B e antigen−negative patients with all major viral genotypes. The incidence of common adverse events (including headache, alopecia, and pyrexia) and treatment discontinuation due to adverse events was similar among groups. A significantly greater proportion of patients receiving TDF plus peginterferon for 48 weeks had HBsAg loss than those receiving TDF or peginterferon alone. ClinicalTrials.gov ID NCT01277601.

5 December 2015 in Hepatology
Verified
Journal Article
Open access
PDF file
YLYong-ho Lee
Yong-ho Lee
Seung Up KimSeung Up Kim
Seung Up Kim
KSKijun Song
Kijun Song
JPJun Yong Park
Jun Yong Park
DKDo Young Kim
Do Young Kim
KHKwang-Hyub Han
Kwang-Hyub Han
Sarcopenia is associated with nonalcoholic fatty liver disease (NAFLD). This study investigated whether sarcopenia is associated with significant liver fibrosis in subjects with NAFLD. Data from the Korean National Health and Nutrition Examination Surveys 2008‐2011 database were analyzed. NALFD was defined by NAFLD liver fat score, comprehensive NAFLD score, or hepatic steatosis index. Degree of liver fibrosis was assessed by NAFLD fibrosis score (NFS), FIB‐4, and Forns index. Significant liver fibrosis was defined as FIB‐4 ≥2.67 and the highest quartile values of NFS and Forns index. Sarcopenia index (= total appendicular skeletal muscle mass [kg]/body mass index (kg/m2]) was calculated using dual‐energy X‐ray absorptiometry. Using the NAFLD liver fat score, NAFLD was identified in 2761 (28.5%) of 9676 subjects. Of subjects with NAFLD, sarcopenia was identified in 337 (12.2%). Sarcopenia was significantly associated with significant liver fibrosis assessed in fibrosis prediction models (all P < 0.05). In subgroups stratified according to body mass index and homeostasis model assessment of insulin resistance, a significant association between sarcopenia and significant liver fibrosis by NFS was consistently present (odds ratio = 1.76‐2.68 depending on the subgroup, all P < 0.05). Multivariate logistic regression analysis demonstrated an independent association between SI and significant liver fibrosis by NFS after adjusting for other confounders (odds ratio = 0.52‐0.67, all P < 0.01). Other NAFLD (comprehensive NAFLD score, hepatic steatosis index) and fibrosis prediction models (FIB‐4 and Forns index) produced similar results. Conclusion: Sarcopenia is associated with significant liver fibrosis in subjects with NAFLD, and the association is independent of obesity and insulin resistance. (Hepatology 2016;63:776–786)

1 April 2010 in Liver International
Verified
Journal Article
Closed access
PDF file
BKBeom Kyung Kim
Beom Kyung Kim
DKDo Young Kim
Do Young Kim
JPJun Yong Park
Jun Yong Park
SASang Hoon Ahn
Sang Hoon Ahn
CCChae Yoon Chon
Chae Yoon Chon
KHKwang-Hyub Han
Kwang-Hyub Han