Publications by authors named "Agnes L-F Chan"

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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This study aims to examine whether radiation therapy doses are related to incidences of carotid artery stenosis and brain necrosis in a large-scale real-world database. We identified a cohort of HNC patients from the catastrophic illness patient dataset using ICD-9 or ICD-10 to compare the incidence and risks of carotid artery stenosis (CAS) and brain necrosis (RIBN) in patients who received a radiation therapy dose of ≥5400 cGy/30 fractions (group A) with those who received a radiation therapy dose of <5400 cGy/30 fractions (group B). The incidence and hazard ratios were quantified using Cox proportional hazards models.

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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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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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: To evaluate the effectiveness of hepatic arterial infusion chemotherapy (HAIC) followed by lipiodol infusion in advanced hepatocellular carcinoma (HCC) with portal vein tumor thrombus (PVTT). : Thirty-two patients with advanced HCC and PVTT who received HAIC with regimens of cisplatin, mitomycin-C, and 5-fluorouracil followed by lipiodol infusion were enrolled. The primary efficacy endpoint was tumor response rate.

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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: 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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Article Synopsis
  • A comparison was made between the cost-effectiveness of proton beam therapy and stereotactic body radiation therapy for patients with inoperable advanced hepatocellular carcinoma using a Markov decision-analytic model.
  • The analysis showed that proton beam therapy led to a median survival of 16 months and provided 2.61 additional quality-adjusted life years (QALYs) at an extra cost of NT$ 557,907 compared to SBRT, resulting in an incremental cost-effectiveness ratio (ICER) of NT$ 213,354 per QALY.
  • The study concluded that proton beam therapy is likely cost-effective in Taiwan, with a 97% probability of being the favored option at a willingness-to
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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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Objective: Stereotactic body radiotherapy (SBRT) has been shown to improve overall survival in patients with advanced hepatocellular carcinoma. This study aimed to assess the cost-effectiveness of SBRT compared to sorafenib which is the only drug for advanced hepatocellular carcinoma.

Methods: A Markov decision-analytic model was performed to compare the cost-effectiveness of SBRT and sorafenib for unresectable advanced hepatocellular carcinoma.

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Background: Trastuzumab was considered a cost-effective adjuvant treatment for HER 2-positive early breast cancer. Since 2010, the Taiwanese National Health Insurance (NHI) has started to reimburse for 1-year adjuvant treatment. This study aims to provide an updated cost-effectiveness analysis from the NHI perspective, which explores assumptions about long-term cardiac toxicity and treatment benefit of 1-year adjuvant treatment sequentially after chemotherapy.

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Article Synopsis
  • * The study compiled data from five clinical trials involving 234 patients and confirmed that glutamine significantly reduces the risk and severity of oral mucositis compared to placebo.
  • * Results showed a strong statistical benefit (risk ratio 0.17), but further research with larger trials is needed to solidify these findings.
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Purpose: The purpose of this study was to evaluate the cost-effectiveness of gemcitabine plus modern radiotherapy versus gemcitabine alone in the treatment of locally advanced pancreatic cancer in Taiwan.

Methods: A Markov decision-analytic model was performed to compare the cost-effectiveness of 3 treatment regimens; gemcitabine alone (gem-alone), gemcitabine plus intensity-modulated radiotherapy (gem-IMRT), and gemcitabine plus stereotactic body radiotherapy (gem-SBRT). Patients transitioned between 5 health states: stable disease, local progression, distant metastasis, local and distant metastasis, and death.

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The aim of the present study was to evaluate the association and prediction of dihydropyrimidine dehydrogenase gene () polymorphisms and the risk of 5-fluorouracil (5-FU) severe toxicity in cancer patients. A meta-analysis of the published literature was conducted to summarize evidence for gene polymorphisms associated with an increased risk of severe 5-FU toxicity in patients with cancer from an Asian population. Relevant literature was identified using the PubMed and Cochrane databases on April 11, 2014.

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Background: We conducted a meta-analysis to assess the overall risk of cardiac toxicity associated with trastuzumab treatment in elderly breast cancer patients.

Methods: We searched databases from PubMed, EMBASE and Cochrane Central Registry of Controlled Trials to identify relevant studies. Statistical analyses were conducted to calculate the incidence rate, overall hazard ratio (HR) and 95% CIs using a fixed effects model.

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Article Synopsis
  • - The study aimed to evaluate the long-term effects of breast irradiation on heart health in women with early breast cancer, using data from the National Health Insurance Research Database and focusing on patients treated between 2000 and 2010.
  • - Researchers compared the rates of cardiac issues, such as ischemic heart disease and heart failure, between breast cancer patients who did and did not receive adjuvant radiotherapy, employing a statistical model for analysis.
  • - Findings showed no significant difference in cardiac-related morbidity or mortality between the two groups over a median follow-up period of 3.5 years, suggesting modern radiotherapy techniques have minimal long-term effects on heart health.
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Introduction: To evaluate the risk of breast cancer associated with long-term use of antihypertensive agents (AHs) in Taiwanese women with hypertension.

Methods: A search of the Taiwan National Health Insurance Research Database identified 330,699 patients with hypertension who were treated with antihypertensive drugs between January 1, 1998 and December 31, 2011. Logistic regression models were used to estimate the odds ratios (ORs) and 95% confidence intervals (CIs) between the use of AHs and breast cancer risk, adjusted for other types of antihypertensive drugs, statins and co-morbidities.

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  • This network meta-analysis compared the effectiveness and safety of seven newer targeted therapies for metastatic renal cell carcinoma (mRCC) based on various randomized clinical trials.
  • The results showed that while some targeted agents improved progression-free survival (PFS), they were associated with a higher incidence of adverse events leading to more withdrawals.
  • Notable findings included that axitinib was more effective than pazopanib, and sunitinib outperformed sorafenib and temsirolimus in efficacy without significant safety differences, suggesting sunitinib and axitinib as more clinically efficient options.
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  • - The study aims to review the quality of cost-effectiveness analyses (CEAs) for treatments of metastatic colorectal cancer (mCRC) by analyzing various research articles published between 1999 and 2009.
  • - A total of 24 CEAs were identified, revealing significant differences in methodology, which affected the reported cost-effectiveness ratios, and common methodological flaws were noted across many studies.
  • - The findings highlight the need for improved quality and consistency in CEAs related to cancer treatments, suggesting further research on CEAs beyond just mCRC.
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  • 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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Aims: Digoxin is an important medication for heart failure (HF) patients and sennosides are widely used to treat constipation. Recently, safety concerns have been raised about a possible interaction between sennosides and digoxin, an issue that has not been studied empirically. This study therefore aimed to evaluate whether exposure to sennoside-digoxin interaction is associated with an increased risk of digoxin toxicity.

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Background: Concomitant chemotherapy with radiotherapy is considered to be the standard of care for patients with head and neck cancer and good performance status. However, published reports on the cost effectiveness of this therapeutic approach are extremely rare.

Objective: The aim of this study was to estimate the cost effectiveness of cetuximab combined with radiotherapy compared with radiotherapy alone in patients with locally advanced squamous cell carcinoma of the head and neck.

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Background: Randomized controlled trials (RCTs) of multikinase inhibitors sunitinib, sorafenib, and pazopanib have reported efficacy compared with results from placebo and interferon-α (INF-α). To date, these drugs have not been compared in head-to-head trials.

Objective: To review systematically the evidence of clinical effectiveness of multikinase inhibitors in the treatment of metastatic renal cell carcinoma (mRCC) and, via an indirect meta-analysis, to determine an optimal treatment among these agents.

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