Publications by authors named "Hui-Jen Tsai"

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  • The study investigates how the cytotoxin-associated gene A (CagA) influences cell cycle progression in B lymphoma cells by activating nuclear factor of activated T cells (NFAT), which may affect the response to Helicobacter pylori eradication in gastric MALT lymphoma.
  • Researchers used three B-lymphoma cell lines and evaluated their response to H. pylori strains, measuring CagA expression, NFATc1 signaling, and cell cycle inhibitors.
  • Results show a significant link between CagA presence, nuclear NFATc1 localization, and responsiveness to treatment, suggesting that both CagA and NFATc1 may play roles in improving therapy outcomes for patients with gastric MALT lymphoma.
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  • The study investigated the clinical outcomes of patients in Taiwan with advanced or recurrent gastrointestinal stromal tumors (GISTs) treated with tyrosine kinase inhibitors (TKIs) from 2010 to 2020.
  • A total of 224 patients were analyzed, revealing significant survival rates: 50.5% progression-free survival (PFS) and 79.5% overall survival (OS) at 48 months for those treated with imatinib; other treatments like sunitinib and regorafenib showed shorter PFS.
  • The research highlighted specific genetic mutations (c-KIT and PDGFRA) as critical prognostic factors affecting patient outcomes, indicating that certain mutations
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  • A study evaluated the effectiveness and safety of a new chemotherapy regimen (SOLAR) combining nab-paclitaxel, oxaliplatin, and S-1/leucovorin for treating upper gastrointestinal (UGI) cancers in patients who haven't received chemotherapy before.
  • The maximal tolerated dose (MTD) for oxaliplatin was found to be 85 mg/m2, with common severe side effects being neutropenia and diarrhea.
  • Preliminary results showed a promising overall response rate of 63.2%, with median progression-free survival of 12.5 months and overall survival of 24.7 months, suggesting further research is warranted.
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The molecular pathogenesis of extranodal NK/T-cell lymphoma (NKTCL) remains obscured despite the next-generation sequencing (NGS) studies explored on ever larger cohorts in the last decade. We addressed the highly variable mutation frequencies reported among previous studies with comprehensive amplicon coverage and enhanced sequencing depth to achieve higher genomic resolution for novel genetic discovery and comparative mutational profiling of the oncogenesis of NKTCL. Targeted exome sequencing was conducted to interrogate 415 cancer-related genes in a cohort of 36 patients with NKTCL, and a total of 548 single nucleotide variants (SNVs) and 600 Copy number variances (CNVs) were identified.

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Background: Cancer susceptibility germline mutations are associated with pancreatic ductal adenocarcinoma (PDAC). However, the hereditary status of PDAC and its impact on survival is largely unknown in the Asian population.

Methods: Exome sequencing was performed on 527 blood samples from PDAC individuals and analyzed for mutations in 80 oncogenic genes.

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Background: Phosphatase and tensin homolog (PTEN) is a tumor suppressor. Low PTEN expression has been observed in pancreatic neuroendocrine tumors (pNETs) and is associated with increased liver metastasis and poor survival. Vascular endothelial growth factor receptor 3 (VEGFR3) is a receptor tyrosine kinase and is usually activated by binding with vascular endothelial growth factor C (VEGFC).

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  • - Sorafenib and lenvatinib are multikinase inhibitors approved for treating patients with radioactive iodine-refractory differentiated thyroid cancer, and this study aimed to evaluate how long these patients remain asymptomatic after starting treatment.
  • - The study included 647 patients, with a median observation period of 35.5 months, comparing two groups: those who started treatment with an MKI at the study's start and those who did not.
  • - Results showed a median time to symptomatic progression of 55.4 months overall, with 64.5% of patients remaining asymptomatic for over 36 months, while 70% of patients on sorafenib experienced dose modifications and 89% had treatment-related side effects
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Background: Tumor cells may aberrantly express metabolic enzymes to adapt to their environment for survival and growth. Targeting cancer-specific metabolic enzymes is a potential therapeutic strategy. Phosphoenolpyruvate carboxykinase (PEPCK) catalyzes the conversion of oxaloacetate to phosphoenolpyruvate and links the tricarboxylic acid cycle and glycolysis/gluconeogenesis.

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Article Synopsis
  • * A retrospective study reviewed 730 pancreatic cancer patients treated from 2013 to 2020, identifying 117 patients who received induction chemotherapy, primarily triplet regimens like SLOG, modified FOLFIRINOX, and GOFL.
  • * Results showed that 29% of patients underwent conversion surgery, leading to a significant increase in median overall survival (29.1 months with surgery vs. 14.1 months without), emphasizing the need for surgical exploration after chemotherapy.
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Chromogranin A (CgA) is a non-specific biomarker excreted by neuroendocrine tumor (NET) cells. Elevation of circulating CgA level can be detected in gastroenteropancreatic (GEP)-NET patients and has been shown to correlate with tumor burden. The prognostic and predictive roles of CgA level and the change of CgA level are controversial.

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  • - Chemotherapy is the primary treatment for metastatic gastric adenocarcinoma, while the effectiveness of surgery without symptoms remains debated.
  • - A study using data from the Taiwan Cancer Registry assessed survival outcomes of various treatment methods for 5,599 patients diagnosed between 2008 and 2015.
  • - Results showed that patients receiving both surgery and chemotherapy had the longest median survival of 14.2 months, compared to 7.0 months for chemotherapy alone and 3.9 months for surgery alone, suggesting surgery combined with chemotherapy can improve survival for certain patients.
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Objective: Anaplastic thyroid cancer (ATC) is a rare thyroid cancer subtype with a devastating prognosis. Novel treatment strategies are under investigation to improve the survival of patients with ATC.

Methods: We present a case of recurrent ATC treated with a combination of radiation therapy (RT) and pembrolizumab, a programmed death-1 inhibitor, with a durable complete response.

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Inconsistent results have been reported for the association between alcohol use and pancreatic cancer, particularly at low levels of alcohol consumption. Individuals genetically susceptible to the carcinogenic effect of alcohol might have higher pancreatic cancer risk after drinking alcohol. The current study investigated the association between alcohol use and pancreatic cancer with 419 pancreatic cancer cases and 963 controls recruited by a hospital-based case-control study in Taiwan.

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Aims: New-generation breakpoint cluster region-Abelson tyrosine kinase inhibitors (TKIs) have a higher incidence of cardiovascular events than imatinib in patients with chronic myeloid leukaemia (CML). However, this knowledge is insufficiently proven. Hence, this study aimed to explore the association between cardiovascular events and TKIs in patients with CML.

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The incidence of neuroendocrine tumors (NETs) has been increasing in recent decades. Previously, we reported the incidence and survival of NETs in Taiwan by analyzing the 1996-2008 data from the Taiwan Cancer Registry. Here we performed an updated analysis on the incidence and survival of NETs in Taiwan from 1996 to 2015.

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Most acute myeloid leukemia (AML) cells are argininosuccinate synthetase-deficient. Pegylated arginine deiminase (ADI-PEG20) monotherapy depletes circulating arginine, thereby selectively inducing tumor cell death. ADI-PEG20 was shown to induce complete responses in ~10% of relapsed/refractory or poor-risk AML patients.

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Background: Ectopic insulin-like growth factor binding protein 3 (IGFBP3) expression has been shown to enhance cell migration and lymph node metastasis of oral squamous cell carcinoma (OSCC) cells. However, OSCC patients with high IGFBP3 expression had improved survival compared with those with low expression. Therefore, we speculated that IGFBP3 expression may play a role in response to conventional OSCC therapies, such as radiotherapy.

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S-1, an oral pyrimidine fluoride-derived agent, is effective against various cancers. Sorafenib, an oral multikinase inhibitor, was found to prolong the survival of various cancers and enhance the cytotoxicity of chemotherapeutic agents. We conducted a phase I dose escalation study to determine dose-limiting toxicity (DLT) and maximal tolerated dose (MTD) of S-1 when combined with sorafenib for refractory solid tumors.

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Lessons Learned: SCB01A is a novel microtubule inhibitor with vascular disrupting activity. This first-in-human study demonstrated SCB01A safety, pharmacokinetics, and preliminary antitumor activity. SCB01A is safe and well tolerated in patients with advanced solid malignancies with manageable neurotoxicity.

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Pancreatic neuroendocrine tumor (pNET) is a pancreatic neoplasm with neuroendocrine differentiation. pNET in early stage can be treated with surgical resection with long-term survival, whereas the prognosis of pNET with locoregional or distant metastasis is relatively poor. Lymphangiogenesis is essential for tumor metastasis via the lymphatic system and may overhead distant metastasis.

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Background: Due to differences in genetic background, it is unclear whether the genetic loci identified by the previous genome-wide association studies (GWAS) of pancreatic cancer also play significant roles in the development of pancreatic cancer among the Taiwanese population.

Methods: This study aimed to validate the 25 pancreatic cancer GWAS-identified single nucleotide polymorphisms (SNPs) in a case-control study (278 cases and 658 controls) of pancreatic cancer conducted in Taiwan. Statistical analyses were conducted to determine the associations between the GWAS-identified SNPs and pancreatic cancer risk.

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Background: Sorafenib has been shown to prolong the progression free survival (PFS) of advanced radioiodine (RAI) refractory differentiated thyroid cancer (DTC) and has been approved by the FDA as the result of the phase III DECISION trial. Sorafenib has been reimbursed for the treatment of RAI refractory DTC in Taiwan since Jan 2017. High percentage of adverse events (AE) was noted in DECISION trial.

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Article Synopsis
  • * A study conducted on 44 patients treated over two years found an overall response rate of 9.1%, with a median overall survival (OS) of 6.6 months; patients with better performance status (ECOG PS 0-1) had improved OS rates of 7.8 months.
  • * While 34% of participants experienced manageable severe hematological toxicity, the findings support the efficacy
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