PMID- 35778316 OWN - NLM STAT- MEDLINE DCOM- 20220803 LR - 20220808 IS - 1499-3872 (Print) VI - 21 IP - 4 DP - 2022 Aug TI - High nuclear ABCG1 expression is a poor predictor for hepatocellular carcinoma patient survival. PG - 370-377 LID - S1499-3872(22)00141-2 [pii] LID - 10.1016/j.hbpd.2022.06.009 [doi] AB - BACKGROUND: ATP-binding cassette transporter G1 (ABCG1) regulates cellular cholesterol homeostasis and plays a significant role in tumor immunity. But, for hepatocellular carcinoma (HCC), the role of ABCG1 has not been investigated. Thus, the aim of this study was to evaluate the prognostic value and clinicopathological significance of ABCG1 in HCC. METHODS: One hundred and four adult patients with HCC were enrolled, and ABCG1 expression in paired HCC specimens was determined by immunohistochemistry. All these patients were stratified by ABCG1 expression, Kaplan-Meier analysis was used to compare the overall survival (OS) and recurrence-free survival (RFS), and Cox regression analysis was used to determine independent predictors of tumor recurrence. RESULTS: Upregulation of ABCG1 was observed in HCC samples compared to matched tumor-adjacent tissues. Patients with high nuclear ABCG1 expression had lower OS and RFS (P = 0.012 and P = 0.020, respectively). High nuclear ABCG1 expression was related to larger tumor size (P = 0.004) and tumor recurrence (P = 0.027). Although ABCG1 was expressed in the cytoplasm, cytosolic expression could not predict the outcome in patients with HCC. A new stratification pattern was established based on the heterogenous ABCG1 expression pattern: high risk (High(nucleus)/Low(cytosol)), moderate risk (High(nucleus)/High(cytosol) or Low(nucleus)/Low(cytosol)), and low risk (Low(nucleus)/High(cytosol)). This ABCG1-based risk stratification could distinguish the different OS and RFS in patients with HCC. Multivariate Cox regression analysis indicated that ABCG1 high risk was an independent predictor of poor RFS (P = 0.015). CONCLUSIONS: High nuclear ABCG1 expression indicates poor prognosis in patients with HCC. Asymmetric distribution of ABCG1 in the nucleus and cytoplasm may have an important role in tumor recurrence. CI - Copyright (c) 2022 First Affiliated Hospital, Zhejiang University School of Medicine in China. Published by Elsevier B.V. All rights reserved. FAU - Xi, Bin AU - Xi B AD - Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China. FAU - Luo, Fang-Zhou AU - Luo FZ AD - Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China. FAU - He, Bin AU - He B AD - Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China. FAU - Wang, Fang AU - Wang F AD - Department of Radiotherapy, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China. FAU - Li, Ze-Kuan AU - Li ZK AD - Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China. FAU - Lai, Ming-Chun AU - Lai MC AD - Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China. FAU - Zheng, Shu-Sen AU - Zheng SS AD - Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, Zhejiang University, Hangzhou 310003, China. Electronic address: shusenzheng@zju.edu.cn. LA - eng PT - Journal Article DEP - 20220623 PL - Singapore TA - Hepatobiliary Pancreat Dis Int JT - Hepatobiliary & pancreatic diseases international : HBPD INT JID - 101151457 RN - 0 (ABCG1 protein, human) RN - 0 (ATP Binding Cassette Transporter, Subfamily G, Member 1) RN - 0 (Biomarkers, Tumor) SB - IM MH - ATP Binding Cassette Transporter, Subfamily G, Member 1 MH - Adult MH - Biomarkers, Tumor/analysis MH - *Carcinoma, Hepatocellular/pathology MH - Humans MH - Kaplan-Meier Estimate MH - *Liver Neoplasms/pathology MH - Neoplasm Recurrence, Local MH - Prognosis OTO - NOTNLM OT - ATP-binding cassette transporter G1 OT - Hepatocellular carcinoma OT - Overall survival OT - Prognostic factor OT - Progression-free survival EDAT- 2022/07/02 06:00 MHDA- 2022/08/04 06:00 CRDT- 2022/07/01 22:14 PHST- 2021/12/06 00:00 [received] PHST- 2022/06/20 00:00 [accepted] PHST- 2022/07/02 06:00 [pubmed] PHST- 2022/08/04 06:00 [medline] PHST- 2022/07/01 22:14 [entrez] AID - S1499-3872(22)00141-2 [pii] AID - 10.1016/j.hbpd.2022.06.009 [doi] PST - ppublish SO - Hepatobiliary Pancreat Dis Int. 2022 Aug;21(4):370-377. doi: 10.1016/j.hbpd.2022.06.009. Epub 2022 Jun 23.