Publications by authors named "Wencheng Chang"

Background: Worldwide patient-caregiver concordance on cognitive prognostic awareness (PA) has been extensively examined, but concordance on sufficient (ie, cognitive and emotional) death preparedness is unexplored. We comprehensively examine the evolution of patient-caregiver concordance on death preparedness over the patient's last 6 months.

Materials/methods: This study re-examined data from 2 cohort studies on 694 dyads of cancer patients and their caregivers recruited from a single medical center in Taiwan.

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Article Synopsis
  • - Osimertinib is an effective lung cancer drug, but it can cause severe allergic reactions, especially in Asian patients, which can complicate treatment.
  • - A study of 17 patients showed that the genetic marker HLA-B*51:02 was found in a high percentage of those experiencing severe allergic reactions (SJS/TEN), indicating a strong genetic predisposition.
  • - The presence of HLA-B*51:02 also correlated with higher levels of a specific protein related to these reactions, suggesting that individuals with this genetic marker may be at risk for severe side effects when taking osimertinib.
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This cohort study investigated factors associated with 336 Taiwanese family caregivers' emotional and cognitive preparedness for death of a loved one with terminal cancer. Caregivers' death-preparedness states (no-death-preparedness [as reference], cognitive-death-preparedness-only, emotional-death-preparedness-only, and sufficient-death-preparedness states) were previously identified. Associations of factors with these states were determined by a hierarchical generalized linear model.

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The study aimed to describe respiratory syncytial virus infections among hospitalized adults between January 2021 and February 2023 from a single medical center in Taiwan. Clinical information from infected patients with RSV was via medical charts review. The incidence of RSV during the study period among adult inpatients showed seasonal variation and could be up to around 2 % in peak season.

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Context/objectives: The scarce research on factors associated with surrogate decisional regret overlooks longitudinal, heterogenous decisional-regret experiences and fractionally examines factors from the three decision-process framework stages: decision antecedents, decision-making process, and decision outcomes. This study aimed to fill these knowledge gaps by focusing on factors modifiable by high-quality end-of-life (EOL) care.

Methods: This observational study used a prior cohort of 377 family surrogates of terminal-cancer patients to examine factors associated with their membership in the four preidentified distinct decisional-regret trajectories: resilient, delayed-recovery, late-emerging, and increasing-prolonged trajectories from EOL-care decision making through the first two bereavement years by multinomial logistic regression modeling using the resilient trajectory as reference.

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Background: Family surrogates experience heterogeneous decisional regret and negative long-lasting postdecision impacts. Cross-sectional findings on the associations between decisional regret and surrogates' bereavement outcomes are conflicting and cannot illustrate the directional and dynamic evolution of these associations. In this study, we sought to longitudinally examine the associations between 4 previously identified decisional-regret trajectories and bereavement outcomes among family surrogates of terminally ill patients with cancer.

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Article Synopsis
  • Melanoma in Taiwan is rare and primarily consists of acral and mucosal types, which differ from Western melanoma in behavior and genetics.
  • Taiwanese medical experts created a local clinical practice consensus guideline to address diagnosis, staging, and treatment based on local conditions and expert evaluations.
  • The guidelines emphasize surgical management (especially sentinel lymph node biopsies), require BRAF molecular testing before systemic treatment, and prioritize immunotherapy and targeted therapy for patients.
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Background/objective: Facilitating death preparedness is important for improving cancer patients' quality of death and dying. We aimed to identify factors associated with the four death-preparedness states (no-preparedness, cognitive-only, emotional-only, and sufficient-preparedness) focusing on modifiable factors.

Methods: In this cohort study, we identified factors associated with 314 Taiwanese cancer patients' death-preparedness states from time-invariant socio-demographics and lagged time-varying modifiable variables, including disease burden, physician prognostic disclosure, patient-family communication on end-of-life (EOL) issues, and perceived social support using hierarchical generalized linear modeling.

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Objective: Unprecedently investigate associations of prognostic-awareness-transition patterns with (changes in) depressive symptoms, anxiety symptoms, and quality of life (QOL) during cancer patients' last 6 months.

Methods: In this secondary analysis study, 334 cancer patients in their last 6 months transitioned between four prognostic-awareness states (unknown and not wanting to know, unknown but wanting to know, inaccurate awareness, and accurate awareness), thus constituting three transition patterns: maintaining-accurate-, gaining-accurate-, and maintaining-inaccurate/unknown prognostic awareness. A multivariate hierarchical linear model evaluated associations of the transition patterns with depressive symptoms, anxiety symptoms, and QOL determined at final assessment and by mean difference between the first and last assessment.

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Context: Regret plays a central role in surrogate decision making. Research on decisional regret in family surrogates is scarce and lacks longitudinal studies to illustrate the heterogenous, dynamic evolution of decisional regret.

Objectives: To identify distinct decisional-regret trajectories from end-of-life (EOL) decision making through the first two bereavement years among surrogates of cancer patients.

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Background: Dysphagia is a leading cause of aspiration pneumonia and negatively affects tolerance of chemoradiotherapy in patients with esophageal cancer.

Objective: This study aimed to assess a protocol for preventing the occurrence of aspiration pneumonia for adult patients with esophageal cancer experiencing swallowing dysfunction.

Methods: This study tested a dysphagia intervention that included high-risk patients confirmed by the Eating Assessment Tool questionnaire and Water Swallowing Test.

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Mycophenolate (mycophenolate mofetil [MMF]; mycophenolate sodium [MPS]) and tacrolimus (FK-506) are commonly and concomitantly used to prevent rejection in organ transplant. Mycophenolate-induced hepatotoxicity causing the reduced FK-506 metabolism with nephrotoxicity may be less appreciated, leading to inappropriate management. We describe a new living donor kidney recipient receiving pretransplant and post-transplant immunosuppressants including oral mycophenolate (MMF 1 g daily) and tacrolimus (FK-506 4-8 mg daily) who developed progressive liver dysfunction (up to 10-fold increase) despite the reduced FK-506 dosage (6 mg daily).

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Background: The risk for major adverse cardiovascular events (MACE) with targeted therapies for patients with advanced renal cell carcinoma (RCC) in real-world practice remains unclear.

Objectives: The aim of this study was to compare the risk for MACE associated with targeted cancer therapies with that associated with cytokine treatment in patients with advanced RCC.

Methods: Using Taiwan's National Health Insurance Research Database, a retrospective nationwide cohort study was conducted involving patients with advanced RCC who had received targeted therapy (sunitinib, sorafenib, pazopanib, everolimus, or temsirolimus) or cytokine therapy (interleukin-2 or interferon gamma) from 2007 to 2018.

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Objective: Preparing family surrogates for patient death and end-of-life (EOL) decision making may reduce surrogate decisional conflict and regret. Preparedness for patient death involves cognitive and emotional preparedness. We assessed the associations of surrogates' death-preparedness states (that integrate both cognitive and emotional preparedness for patient death) with surrogates' decisional conflict and regret.

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Purpose: Cancer patients heterogeneously develop prognostic awareness, and end-of-life cancer care has become increasingly aggressive to the detriment of patients and healthcare sustainability. We aimed to explore the never-before-examined associations of prognostic-awareness-transition patterns with end-of-life care.

Methods: Prognostic awareness was categorized into four states: (1) unknown and not wanting to know; (2) unknown but wanting to know; (3) inaccurate awareness; and (4) accurate awareness.

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Context: Patients can prepare for end of life and their forthcoming death to enhance the quality of dying.

Objectives: We aimed to longitudinally evaluate the never-before-examined associations of cancer patients' death-preparedness states by conjoint cognitive prognostic awareness and emotional preparedness for death with psychological distress, quality of life (QOL), and end-of-life care received.

Methods: In this cohort study, we simultaneously evaluated associations of four previously identified death-preparedness states (no-death-preparedness, cognitive-death-preparedness-only, emotional-death-preparedness-only, and sufficient-death-preparedness states) with anxiety symptoms, depressive symptoms, and QOL over 383 cancer patients' last six months and end-of-life care received in the last month using multivariate hierarchical linear modeling and logistic regression modeling, respectively.

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Objective: To determine whether distinctive prolonged-grief-disorder- (PGD) and depressive-symptom states emerge among family caregivers of cancer patients over their first 2 years of bereavement. This may extend cross-sectional evidence that PGD and major depressive disorder (MDD) symptoms can co-occur/occur independently and validate their construct distinctiveness.

Methods: In this secondary-analysis study, PGD symptoms and depressive symptoms were measured over 666 caregivers using 11 grief symptom items of the Prolonged Grief-13 scale and 16 items of the Center for Epidemiologic Studies-Depression scale, respectively.

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Background: Cancer patients may develop prognostic awareness (PA) heterogeneously, but predictors of PA-transition patterns have never been studied. We aimed to identify transition patterns of PA and their associated factors during cancer patients' last 6 months.

Methods: For this secondary-analysis study, PA was assessed among 334 cancer patients when they were first diagnosed as terminally ill and monthly till they died.

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Background/objective: Preparing family caregivers, cognitively, emotionally, and behaviorally, for their relative's death is an actionable component of high-quality end-of-life care. We aimed to examine the never-before-examined associations of conjoint cognitive prognostic awareness and emotional preparedness for death with caregiving outcomes and end-of-life care received by cancer patients.

Design/setting/participants/main Measures: For this longitudinal study, associations of death-preparedness states (no-death-preparedness, cognitive-death-preparedness-only, emotional-death-preparedness-only, and sufficient-death-preparedness states) with subjective caregiving burden, depressive symptoms, and quality of life (QOL) and patients' end-of-life care (chemotherapy and/or immunotherapy, cardiopulmonary resuscitation, intensive care unit care, intubation, mechanical ventilation support, vasopressors, nasogastric tube feeding, and hospice care) were evaluated using multivariate hierarchical linear and logistic regression modeling, respectively, for 377 caregivers in cancer patients' last 6 months and 1 month, respectively.

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Objective: Death preparedness involves cognitive prognostic awareness and emotional acceptance of a relative's death. Effects of retrospectively assessed cognitive prognostic awareness and emotional preparedness for patient death have been individually investigated among bereaved family caregivers. We aimed to prospectively examine associations of caregivers' death-preparedness states, determined by conjoint cognitive prognostic awareness and emotional preparedness for death, with bereavement outcomes.

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Background: Metastatic Merkel cell carcinoma (mMCC) has traditionally been managed with palliative chemotherapy regimens or best supportive care (BSC). Avelumab, a novel anti-programmed death-ligand 1 (PD-L1) human monoclonal antibody for mMCC treatment, is being studied in the pivotal JAVELIN Merkel 200 trial.

Aim: Incorporating trial results, this analysis aimed to evaluate the cost-utility of avelumab in Taiwan.

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Background: Family caregivers' distinct depressive-symptom trajectories are understudied and have been examined independently during end-of-life (EOL) caregiving or bereavement, making it difficult to validate two competing hypotheses (wear-and-tear vs. relief) of caregiving effects on bereavement. Existing studies may also miss short-term heterogeneity in depressive symptoms during the immediate postloss period due to lengthy delays in the first postloss assessment.

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The immunomodulatory effects of regulatory T cells (Tregs) and co-signaling receptors have gained much attention, as they help balance immunogenic and immunotolerant responses that may be disrupted in autoimmune and infectious diseases. Drug hypersensitivity has a myriad of manifestations, which ranges from the mild maculopapular exanthema to the severe Stevens-Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and drug reaction with eosinophilia and systemic symptoms/drug-induced hypersensitivity syndrome (DRESS/DIHS). While studies have identified high-risk human leukocyte antigen (HLA) allotypes, the presence of the HLA allotype at risk is not sufficient to elicit drug hypersensitivity.

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Context: To identify caregivers' death-preparedness states by combining cognitive and emotional preparedness for their loved one's death as well as their evolution over cancer patients' last 6 months, which have never been explored.

Methods: Death-preparedness states and their evolution were examined by hidden Markov modeling among 393 caregivers of cancer patients.

Results: Four death-preparedness states were identified: no death preparedness, cognitive death preparedness only, emotional death preparedness only, and sufficient death preparedness.

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