Journal of Liver Cancer

Jihyun An

3 Articles

The effects of immune checkpoint modulators on the clinical course of patients with resectable hepatocellular carcinoma: Jihyun An, Hyo Jeong Kang, Eunsil Yu, Han Chu Lee, Ju Hyun Shim; J Liver Cancer. 2022;22(1):40-50. Published online March 17, 2022; DOI: https://doi.org/10.17998/jlc.2022.03.06

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Abstract PDF Supplementary Material: Background/Aim
Immune checkpoint proteins regulating T-cell mediated anti-tumor immunity have been reported to affect clinical outcomes in multiple malignancies. This study aimed to investigate the prognostic effect of histological expression of immune checkpoint proteins in patients with resected hepatocellular carcinoma (HCC).
Methods
A total of 221 patients with HCC who underwent curative resection were included. Expression of programmed-cell death ligand-1 (PD-L1) in tumor cells (tPD-L1) and tumor infiltrating mononuclear cells (TIMCs) (iPD-L1), programmed-cell death-1 in TIMCs (iPD-1), and cytotoxic T lymphocyte antigen-4 in TIMCs (iCTLA-4) were measured immunohistochemically.
Results
Histo-positivity for iCTLA-4, iPD-1, iPD-L1, and tPD-L1 was 32.1%, 42.5%, 35.3%, and 14.9%, respectively. Multivariate logistic analyses revealed that male sex and tumor >5 cm were variables related to iCTLA-4 positivity (odds ratio [OR], 0.46 and 1.94, respectively; P<0.05). Poor differentiation was related to PD-L1 expression in both tumor cells and TIMCs (OR, 2.88 and 3.46, respectively; P<0.05). Microvascular invasion was significantly associated only with iPD-L1 (OR, 2.24; P<0.05). In time-dependent outcome analyses, expression of immune checkpoint proteins in TIMCs (i.e., iCTLA-4, iPD-1, and iPD-L1) was significantly related to longer overall survival and non-cancer-related survival (all P<0.05), but not to time-to-recurrence or cancer-specific deaths. Concurrent activation of the PD-1:PD-L1 and CTLA-4 pathways predicted improved outcomes in terms of overall survival and non-cancer related survival (P=0.06 and P=0.03, respectively).
Conclusions
Immune checkpoint proteins upregulated in TIMCs in HCC tissues have individual and additive effects in prolonging the survival of patients, specifically in terms of survival not related to cancer recurrence.

A Survey of Liver Cancer Specialists’ Views on the National Liver Cancer Screening Program in Korea: Won Sohn, Young-Sun Lee, Jae Geun Lee, Jihyun An, Eun Sun Jang, Dong Ho Lee, Dong Hyun Sinn; J Liver Cancer. 2020;20(1):53-59. Published online March 31, 2020; DOI: https://doi.org/10.17998/jlc.20.1.53

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5 Citations

Abstract PDF Supplementary Material

Background/Aim
s: To reduce the cancer burden, the Korean government initiated the National Cancer Control Plan including the National Liver Cancer Screening Program (NLCSP). Ultrasonography examinations and α-fetoprotein tests at six-month intervals are currently offered for high-risk individuals. High-risk individuals are identified by reviewing the National Health Insurance Service claims data for medical use for the past two years using International Classification of Diseases Codes for specific liver disease. We surveyed the attitudes and opinions towards the NLCSP to understand the issues surrounding the NLCSP in Korea.
Methods
Altogether, 90 Korean Liver Cancer Association members participated in online and offline surveys between November and December 2019.
Results
Approximately one-quarter (27%) of the survey participants rated the NLCSP as very contributing and about two-thirds (68%) as contributing to some extent toward reducing hepatocellular carcinoma (HCC)-related deaths in Korea. Most (87.8%) responded that the current process of identifying high-risk individuals needs improvement. Many (78.9%) were concerned that the current process identifies individuals who use medical services and paradoxically misses those who do not. When asked for the foremost priority for improvement, solving ‘duplication issues between the NLCSP and private clinic HCC screening practices’ was the most commonly selected choice (23.3%).
Conclusions
The survey participants positively rated the role of the NLCSP in reducing liver cancer deaths. However, many participants rated the NCLSP as needing improvement in all areas. This survey can be a relevant resource for future health policy decisions regarding the NLCSP in Korea.

Citations

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A Case of the Effective Treatment of HCC with Bile Duct Invasion and Portal Vein Thrombosis: Jihyun An, Danbi Lee, Ju Hyun Shim, Kang Mo Kim, Young-Suk Lim, Han Chu Lee, Young-Hwa Chung, Yung Sang Lee; Journal of the Korean Liver Cancer Study Group. 2013;13(2):169-172. Published online September 30, 2013; DOI: https://doi.org/10.17998/jlc.13.2.169

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Abstract PDF: Bile duct invasion of hepatocellular caricinoma (HCC) is rare, ranging from 1.2% to 9%. Moreover, the standard treatment of HCC with bile duct invasion is not yet established. We report a case of HCC with bile duct invasion and portal vein thrombosis which was successfully treated by trasarterial chemoembolization and radiotherapy. A 38-year-old female patient visited our hospital due to right upper quadrant pain. The level of total and direct bilirubin was 6.8 and 4.0 mg/dL, respectively. Her blood test showed HBs Ag positive and the level of alpha-fetoprotein was 43,000 ng/mL. Her CT scan revealed lobulating hypervascular mass involving right hepatic lobe, portal vein and both intrahepatic ducts. We performed endoscopic biliary drainage using biliary stent. She had been diagnosed as HCC on endobiliary biopsy. She was treated with radiotherapy (RT) to portal vein thrombosis, and seven transarterial chemoembolizations. After of all, we carried out radiotherapy to hepatic vein thrombosis and residual HCC near hepatic vein. After the RT, she has been taken care at outpatient clinic without evidence of recurrence during 8 months.