Publications by authors named "John Hang Leung"

Article Synopsis
  • Routine use of granulocyte colony-stimulating factor (GCSF) is discouraged for preventing chemotherapy-induced neutropenia due to potential risks in stage IV breast cancer patients.
  • A study of 121 patients revealed that those who received GCSF had a significantly higher incidence of brain metastases (34.9%) compared to those who did not (13.8%).
  • Factors such as GCSF use, menopausal status, and treatment types were identified as independent risks for brain metastasis-free survival, indicating a troubling link between GCSF and increased brain metastasis risk in these patients.
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  • - The study compared 7 newer immunotherapies and targeted therapies for treating platinum-resistant relapsed ovarian cancer, focusing on their effectiveness and safety.
  • - A total of 7 clinical trials with 2485 patients were analyzed, revealing that bevacizumab combined with chemotherapy and lurbinectedin significantly improved progression-free survival, though no significant difference in overall survival was found.
  • - Nivolumab and mirvetuximab showed fewer serious side effects compared to other treatments, suggesting they may be safer options for patients with limited treatment choices.
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Background: Portal vein tumor thrombus (PVTT) is a common complication and an obstacle to treatment, with a high recurrence rate and poor prognosis. There is still no global consensus or standard guidelines on the management of hepatocellular carcinoma (HCC) with PVTT. Increasing evidence suggests that more aggressive treatment modalities, including transarterial chemoembolization, radiotherapy, targeted therapy, and various combination therapies, may improve the prognosis and prolong the survival of advanced hepatocellular carcinoma (aHCC) patients with PVTT.

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Introduction: The cost-effectiveness of adding bevacizumab biosimilar with or without chemotherapy (CT) and drug wastage in treating platinum-resistant recurrent ovarian cancer (PRrOC) was assessed.

Methods: A three-state partitioned-survival model to compare the clinical and economic outcomes in the treatment of patients with PRrOC from a Taiwan healthcare prospective, extrapolated to two years based on data obtained from the JGOG3023 clinical trial. The primary outcomes of the model were incremental cost-effectiveness ratios (ICERs).

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The purpose of this study was to assess the risks of hyperthyroidism and hypothyroidism related to gynecological cancers. Population-based retrospective cohort study. We conducted a cohort study using the Taiwan National Health Insurance Research Database to explore hyperthyroidism and hypothyroidism associated with site-specific gynecologic cancers in women from January 1, 2000 to December 31, 2018.

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Background: Several therapies directed at novel targets and also immunotherapies have recently shown promising results in advanced or metastatic TNBC. We aimed to compare the efficacy and safety of these new regimens for advanced or metastatic TNBC (mTNBC).

Methods: The PubMed, Embase, and Cochrane Library electronic databases were searched for phase III randomized trials.

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Background: The rising cost of cancer drug therapy threatens the long-term sustainability of Taiwan National Health Insurance. Cost savings can be achieved through various strategies, e.g.

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To evaluate the cost-effectiveness of immune checkpoint inhibitors versus docetaxel in patients with advanced non-small-cell lung cancer. A Markov model was constructed to simulate the clinical outcomes and costs of advanced non-small-cell lung cancer. Clinical outcomes data were derived from randomized clinical trials.

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Objective: We evaluated the cost-effectiveness of olaparib and niraparib as maintenance therapy for patients with platinum-sensitive recurrent ovarian cancer. A decision analysis model compared the costs and effectiveness of olaparib and niraparib versus placebo for patients with or without germline mutations. Resource use and associated costs were estimated from the 2020 National Health Insurance Administration reimbursement price list.

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Background: We compared the efficacy and safety of combinations of cyclin-dependent kinase 4/6 (CDK4/6) inhibitors and PI3K/AKT/mTOR inhibitors as second-line treatment in postmenopausal women with HR, HER2 metastatic breast cancer.

Methods: We searched the Medline, Embase, and Cochrane Library electronic databases for phase II/III randomized trials evaluating CDK4/6 and PI3K/AKT/mTOR inhibitors plus fulvestrant. We compared the results with a network meta-analysis.

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Background: This study aimed to estimate the cost-utility of stereotactic body radiotherapy (SBRT) plus cetuximab for patients with previously irradiated recurrent squamous cell carcinoma of the head and neck.

Methods: We constructed a Markov health-state transition model to simulate costs and clinical outcomes of recurrent squamous cell carcinoma of the head and neck. Model parameters were derived from the published literature and the National Health Insurance Administration reimbursement price list.

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Background: Using network meta-analysis, we assessed the efficacy and safety of a combination regimen of HER2-targeted agents as first-line treatment for metastatic HER2-positive breast cancer.

Methods: We searched the Medline, Embase, and Cochrane Library electronic databases (through December 2016) for phase II/III randomized controlled trials that compared regimens of one or two HER2-targeted agents combined with trastuzumab or chemotherapy. A network meta-analysis including direct and indirect analyses was conducted in WinBUGS using fixed and random effects.

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Objective: To provide perspective for the National Health Insurance Bureau (NHIB), we determined the cost-effectiveness of pertuzumab combined with trastuzumab and docetaxel (TDP) versus trastuzumab and docetaxel (TD) as a first-line treatment for HER-2 positive metastatic breast cancer.

Methods: We used a Markov model to simulate cost-effectiveness, disease progression, and survival, based on clinical data and transition probabilities extracted from the CLEOPATRA study. Direct medical costs were acquired from the NHIB claims database.

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Article Synopsis
  • The study aimed to determine the relationship between statin use and the risk of developing common cancers in Taiwan.
  • Researchers analyzed data from over 6,800 patients who used statins and over 27,000 matched controls to estimate the hazard ratios for cancer risk.
  • Results indicated that statin use was associated with a lower risk of various cancers, particularly gastric, liver, and uterine cancers.
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