Publications by authors named "Ronnie Poon"

Background And Objective: Hong Kong, like many parts of Asia, faces a high burden of hepatocellular carcinoma (HCC) caused by high endemic rates of hepatitis B virus infection. Hong Kong clinicians have developed a high level of expertise in HCC treatment across surgical, transarterial, ablative, radiotherapeutic and systemic modalities. This publication summarizes the latest evidence-based recommendations on how these modalities should be used.

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Objective: To study the impact of LT experience on the outcome of CLR for locally advanced hepatobiliary malignancy.

Summary Of Background Data: Despite evolution in LT knowledge and surgical techniques in the past decades, there is yet data to evaluate the significance of LT experience in performing CLR.

Methods: Postoperative outcome after CLR between 1995 and 2019 were reviewed and correlated with LT experience in a single center with both LT and CLR service.

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Capmatinib is an oral, ATP-competitive, and highly potent, type 1b MET inhibitor. Herein, we report phase 1 dose-escalation results for capmatinib in advanced MET-positive solid tumor patients and dose expansion in advanced non-lung tumors. Capmatinib was well tolerated with a manageable safety profile across all explored doses.

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Background: Identification of molecular markers for early detection or prediction of metastasis is crucial for both management of HCC patient postoperative treatment and identify new therapeutic targets to inhibit HCC progression and metastasis. In the current study, we investigated the clinical correlation between Pin1, RhoA and RhoC and their association with HCC metastasis.

Methods: Using a randomized study design of primary HCC samples from 139 patients, we determined messenger RNA expression of Pin1, RhoA and RhoC and their prognostic value.

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Objective: The aim of this study was to evaluate the short- and long-term outcome of associating liver partition and portal vein ligation for staged hepatectomy (ALPPS) for hepatitis-related hepatocellular carcinoma (HCC).

Summary Background Data: ALPPS has been advocated for future liver remnant (FLR) augmentation in liver metastasis or noncirrhotic liver tumors in recent years. Data on the effect of ALPPS in chronic hepatitis or cirrhosis-related HCC remained scarce.

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Background: It is essential to understand the mechanisms responsible for hepatocellular carcinoma (HCC) progression and chemoresistance in order to identify prognostic biomarkers as well as potential therapeutic avenues. Recent findings have shown that SLIT3 appears to function as a novel tumor suppressor gene in various types of cancers, yet its clinical correlation and role in HCC has not been understood clearly.

Methods: We determined the transcript levels of Slit3 in tumor and adjacent normal tissues within two cohorts (N = 40 and 25) of HCC patients, and correlated the gene expression with the clinicopathological data.

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Background: Post-hoc analyses of AFP response and progression and their relationship with objective measures of response and survival were performed in patients from REACH.

Methods: Serum AFP was measured at baseline and every 3 cycles (2 weeks/cycle). Associations between AFP and radiographic progression and efficacy end points were analysed.

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Objective: Post-endoscopic sphincterotomy (EST) bleeding is one of the most frequent complications of endoscopic retrograde cholangiopancreatography (ERCP). Although the use of proton pump inhibitors (PPIs) reduces the risk of peptic ulcer bleeding, their role in preventing EST bleeding has not been evaluated. This study aimed to assess the use of pre-emptive PPIs in patients undergoing EST.

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Lyso-thermosensitive liposomal doxorubicin (LTLD) consists of doxorubicin contained within a heat-sensitive liposome. When heated to ≥40°C, LTLD locally releases a high concentration of doxorubicin. We aimed to determine whether adding LTLD improves the efficacy of radiofrequency ablation (RFA) for hepatocellular carcinoma (HCC) lesions with a maximum diameter () of 3 to 7 cm.

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Background: Hepatocellular carcinoma (HCC) is the most common type of liver cancer worldwide. Previously, we reported that cadherin-17 (CDH17) and its related CDH17/β-catenin axis may be responsible for inducing HCC in a subset of patients exhibiting CDH17 over-expression. Here we aimed at obtaining a better understanding of the CDH17-related HCC biology and to obtain further indications for the design of targeted therapies in CDH17 over-expressing HCC patients.

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Purpose: To report patient-focused outcomes as measured by quality of life (QoL) and performance status (PS) in REACH, a phase III placebo-controlled randomised study, assessing ramucirumab in advanced hepatocellular carcinoma (HCC) patients who received prior sorafenib.

Methods: Eligible patients had advanced HCC, Child-Pugh A, PS 0 or 1 and prior sorafenib. Patients received ramucirumab (8 mg/kg) or placebo (1:1) on day 1 of a 2-week cycle.

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Colorectal cancer results from genetic aberrations which accumulate over a long period of time, with malignant and metastatic properties acquired at a relatively late stage. A subpopulation of CD26+ colorectal cancer stem cells are known to be implicated in metastasis. We quantified CD26+ cancer cells in 11 primary tumor samples by flow cytometry, and showed that tumors having confirmed or suspected metastases harbored a relatively high CD26+ level in these samples.

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Background: Little is known about whether hepatitis B surface antigen (HBsAg) seroconversion (SC) contributes to any survival benefits for patients with hepatocellular carcinoma (HCC).

Methods: All patients with hepatitis B-related HCC and HBsAg seroclearance between 1989 and 2013 were identified. Case- and control-groups were matched according to their stage of disease and mode of treatment.

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Objective: We investigated the mutational landscape of mammalian target of rapamycin (mTOR) signalling cascade in hepatocellular carcinomas (HCCs) with chronic HBV background, aiming to evaluate and delineate mutation-dependent mechanism of mTOR hyperactivation in hepatocarcinogenesis.

Design: We performed next-generation sequencing on human HCC samples and cell line panel. Systematic mutational screening of mTOR pathway-related genes was undertaken and mutant genes were evaluated based on their recurrence.

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This phase I/II single-arm study evaluated the safety, pharmacokinetics, pharmacodynamics, and activity of foretinib, an oral multikinase inhibitor of MET, ROS, RON, AXL, TIE-2, and VEGFR2, in the first-line setting in advanced hepatocellular carcinoma patients. In the phase I part, advanced hepatocellular carcinoma patients were dose escalated on foretinib (30-60 mg) every day using the standard 3+3 design. Once the maximum tolerated dose (MTD) was determined, an additional 32 patients were dosed at the MTD in the phase II expansion cohort for assessment of efficacy and safety.

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Background: The Barcelona Clinic Liver Cancer (BCLC) staging and treatment strategy does not recommended surgery for treating BCLC stage B and C hepatocellular carcinoma (HCC). However, numerous Asia-Pacific institutes still perform surgery for this patient group. This consensus report from the 5th Asia-Pacific Primary Liver Cancer Expert Meeting aimed to share opinions and experiences pertaining to liver resection for intermediate and advanced HCCs and to provide evidence to issue recommendations for surgery in this patient group.

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Background: Chemoembolization with doxorubucin-eluting beads (DEB) has been used to treat hepatocellular carcinoma (HCC) since 2007. This study compared the efficacy and survival between transarterial chemoembolization (TACE) with DEB and conventional approach (cTACE) in HCC treatment.

Methods: This retrospective case-control study compared the overall survival and tumor response of HCC patients to cTACE (n=190) and DEB (n=143) by the reassessment of computed tomography and serum alpha-fetoprotein (AFP).

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Article Synopsis
  • The study looked at blood and tissue samples from patients with liver cancer to see if certain markers could predict how long they would live.
  • They found that higher levels of two specific markers, VEGF and sVEGFR1, were linked to shorter survival times, and these markers were important regardless of other health factors.
  • The researchers also noticed that there were differences in some cancer-related proteins between Asian and non-Asian patients, suggesting that future treatments might need to consider these differences.
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Article Synopsis
  • Dovitinib and sorafenib are both drugs that help treat a type of liver cancer called hepatocellular carcinoma (HCC) by stopping blood vessels from forming tumors.
  • In a study, both drugs showed similar survival times for patients, with dovitinib at 8.0 months and sorafenib at 8.4 months.
  • Patients taking dovitinib had some side effects like diarrhea and fatigue, but it was found that those with lower levels of certain blood proteins had a better survival rate.
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Aim: The aim of this study is to explore the possible effects of clinical and cultural characteristics of hepatocellular carcinoma on patients' health-related quality of life (HRQoL).

Methods: Patients with hepatocellular carcinoma from Asian and European countries completed the EORTC QLQ-C30 and the EORTC QLQ-HCC18. Comparisons were made using Student's t-test and Wilcoxon rank-sum test with method of false discovery to correct multiple comparisons.

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Background And Aim: Hepatitis B virus (HBV) full-length genomic mutations and quasispecies characteristics in hepatocellular carcinoma (HCC) were investigated.

Methods: Hepatitis B virus DNA was extracted from the tumor and non-tumor tissues of 16 HCC patients. Overlapping DNA fragments covering the entire HBV genome were amplified and sequenced.

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Background: Independent risk factors associated with hepatitis B (HBV)-related hepatocellular carcinoma (HCC) after resection remains unknown. An accurate risk score for HCC recurrence is lacking.

Methods: We prospectively followed up 200 patients who underwent liver resection for HBV-related HCC for at least 2 years.

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