Publications by authors named "R-W Chen"

Quality control (QC) in mass spectrometry (MS)-based proteomics is mainly based on data-dependent acquisition (DDA) analysis of standard samples. Here, we collect 2754 files acquired by data independent acquisition (DIA) and paired 2638 DDA files from mouse liver digests using 21 mass spectrometers across nine laboratories over 31 months. Our data demonstrate that DIA-based LC-MS/MS-related consensus QC metrics exhibit higher sensitivity compared to DDA-based QC metrics in detecting changes in LC-MS status.

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The use of parent-report screeners for early detection of autism is time- and cost-efficient in clinical settings but their utility may vary by respondent characteristics. This study aimed to examine the degree to which infants' age and sex impacted parental reports of early behavioral signs of autism captured by the First Years Inventory Version 3.1 (FYIv3.

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Large language models (LLMs) have shown promise in medical question answering, with Med-PaLM being the first to exceed a 'passing' score in United States Medical Licensing Examination style questions. However, challenges remain in long-form medical question answering and handling real-world workflows. Here, we present Med-PaLM 2, which bridges these gaps with a combination of base LLM improvements, medical domain fine-tuning and new strategies for improving reasoning and grounding through ensemble refinement and chain of retrieval.

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Background: Approximately half of the patients with acute ischemic stroke who receive intravenous thrombolysis (IVT) do not achieve an excellent outcome. Remote ischemic conditioning (RIC) as a promising neuroprotective treatment may improve clinical outcomes in this population. This study aimed to assess the efficacy and safety of RIC in patients with IVT.

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Purpose To compare the acquisition time, image quality, and late gadolinium enhancement (LGE) visualization and quantification on phase-sensitive inversion recovery (PSIR) images using 5.0-T versus 3.0-T cardiac MRI.

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  • * Researchers identified 21 human ITPR1 GOF variants and created a mouse model with one of these variants (ITPR1-W1457G), which was found to be prone to stress-induced ventricular arrhythmias.
  • * Both mouse models and human data suggest that ITPR1 GOF variants increase Ca handling abnormalities and arrhythmia risk, with 7 rare ITPR1 variants in a human database showing similar GOF behavior linked to cardiac
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Human organ structure and function are important endophenotypes for clinical outcomes. Genome-wide association studies (GWAS) have identified numerous common variants associated with phenotypes derived from magnetic resonance imaging (MRI) of the brain and body. However, the role of rare protein-coding variations affecting organ size and function is largely unknown.

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The microbiota composition is known to influence the kinetics of graft rejection, but many questions remain as to whether/how microbiota-derived metabolites affect graft outcome. We investigated the effects of the short-chain fatty acid butyrate, a product of dietary fiber fermentation. Sustained intragastric administration of a micelle-based formulation of butyrate (butyrate micelle [ButM]) that releases its cargo in the lower gastrointestinal tract elevated cecal butyrate content and significantly prolonged minor-mismatched and major-mismatched skin allograft survival in mice.

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Background: Subacute and chronic subdural hematomas are common and frequently recur after surgical evacuation. The effect of adjunctive middle meningeal artery embolization on the risk of reoperation remains unclear.

Methods: In a prospective, multicenter, interventional, adaptive-design trial, we randomly assigned patients with symptomatic subacute or chronic subdural hematoma with an indication for surgical evacuation to undergo middle meningeal artery embolization plus surgery (treatment group) or surgery alone (control group).

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  • Coronary MR angiography (CMRA) at 5 T potentially outperforms 3 T due to better image quality and sensitivity in detecting coronary artery disease (CAD).
  • The study included 79 patients and 8 volunteers, comparing 5-T and 3-T imaging techniques, with 5 T showing higher per-segment sensitivity for coronary artery calcium and better consistency with coronary CT angiography (CCTA).
  • Overall, 5-T noncontrast CMRA could be a promising clinical tool for diagnosing CAD, though the specific diagnostic performance metrics varied between 5 T and 3 T.
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  • - Dormant cancer stem cells (DCSCs) play a crucial role in tumor recurrence and metastasis due to their resistance to chemotherapy and ability to evade the immune system, mainly through enhanced PD-L1 signaling and the influence of quiescin sulfhydryl oxidase 1 (QSOX1).
  • - QSOX1, produced by quiescent fibroblasts, boosts PD-L1 expression in DCSCs and creates an environment that excludes CD8 T cells, thus supporting immune evasion.
  • - Targeting QSOX1 with Ebselen, in combination with anti-PD-1 and chemotherapy, shows promise for successfully eradicating dormant DCSCs and improving patient responses to treatment. *
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  • A multicenter randomized controlled trial in China investigated the impact of adding coronary CT-derived fractional flow reserve (CT-FFR) to routine coronary CT angiography (CCTA) on the need for invasive coronary angiography (ICA) and major adverse cardiovascular events (MACE) in patients with suspected coronary artery disease (CAD).
  • The study involved 5,297 participants, showing that the CCTA plus CT-FFR group had a lower ICA rate (10.0%) compared to the CCTA alone group (12.4%) over a 90-day follow-up.
  • While MACE rates were similar between groups, the CCTA plus CT-FFR approach resulted in fewer cardiac events after one year (0.5%
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  • The study aimed to explore how growth differentiation factor 9 (GDF9) affects androgen production in theca cells, which are related to ovarian function.
  • Researchers treated cultured human theca cells with GDF9, an ALK5 inhibitor, and a SMAD4 agonist to observe changes in gene expression related to androgen synthesis and related signaling pathways.
  • The results showed that GDF9 reduced the expression of key genes involved in androgen production and activated specific signaling pathways, indicating its role in suppressing androgen production in these cells.
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Unlabelled: We have created a precisely pegylated IL-2 [SAR-444245 (SAR'245) or pegenzileukin, previously THOR-707] designed for proliferation of target CD8+ T and NK cells for anticancer activity, with minimal expansion of anti-target regulatory CD4+ T cells (Treg) that counter their action, or eosinophils that trigger vascular leak syndrome (VLS). We performed in vivo studies in nonhuman primates (NHP) to monitor the safety of SAR'245, pharmacokinetic profile, and pharmacodynamic parameters including expansion of peripheral CD8+ T and NK cells, and effects on Tregs and eosinophils. Studies included multiple ascending dosing and repeat dosing with different regimens (QW, Q2W, Q3W and Q4W).

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expansion of genetically modified T cells in cancer patients following adoptive transfer has been linked to both anti-tumor activity and T cell-mediated toxicities. The development of digital PCR has improved the accuracy in quantifying the status of adoptively infused T cells compared to qPCR or flow cytometry. Here, we developed and evaluated the feasibility and performance of nanoplate-based digital PCR (ndPCR) to quantify adoptively infused T cells engineered with a T cell receptor (TCR) that recognizes a human endogenous retrovirus type E (HERV-E) antigen.

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Background: Unresectable Hepatocellular Carcinoma (uHCC) poses a substantial global health challenge, demanding innovative prognostic and therapeutic planning tools for improved patient management. The predominant treatment strategies include Transarterial chemoembolization (TACE) and hepatic arterial infusion chemotherapy (HAIC).

Methods: Between January 2014 and November 2021, a total of 1725 uHCC patients [mean age, 52.

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Background: Long-term effects of individualized acupuncture in persons with chronic neck pain (CNP) remain unknown.

Objective: To evaluate the efficacy and safety of pressure pain, sensory-based individualized acupuncture for relieving CNP.

Design: A 24-week multicenter randomized controlled clinical trial.

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  • - The study analyzed how different types of donors affect outcomes of hematopoietic cell transplantation (HCT) in patients with myelofibrosis, finding that the use of haploidentical donors rose significantly from 3% in 2013 to 19% in 2019.
  • - Among 1,032 patients with chronic-phase myelofibrosis, matched sibling donor HCTs showed better overall survival in the first three months compared to haploidentical and matched unrelated donor HCTs, with notably lower rates of graft failure.
  • - While matched sibling donors had superior early outcomes, there were no significant differences in long-term survival or disease-free survival among the different donor types, suggesting hap
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The molecular pathology of stress-related disorders remains elusive. Our brain multiregion, multiomic study of posttraumatic stress disorder (PTSD) and major depressive disorder (MDD) included the central nucleus of the amygdala, hippocampal dentate gyrus, and medial prefrontal cortex (mPFC). Genes and exons within the mPFC carried most disease signals replicated across two independent cohorts.

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  • Socioeconomic status (SES) and race/ethnicity significantly influence outcomes in allogeneic hematopoietic stem cell transplantation (allo-HCT), particularly regarding complications like graft-versus-host disease (GVHD).
  • Among 14,825 patients analyzed, non-Hispanic Black individuals with acute GVHD showed higher transplant-related mortality, a disparity that disappeared when adjusting for aGVHD severity.
  • Higher annual household income correlates with better overall survival and lower transplant-related mortality, underscoring the need for targeted healthcare resources for lower SES patients and strategies to reduce severe GVHD risks, especially in non-Hispanic Black patients.
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  • Ancestral differences in genomic variation influence gene expression, with most studies focusing on European samples or adjusting for ancestry, rather than specifically examining it.
  • This study explored how genetic ancestry impacts gene expression and DNA methylation in brain tissue from admixed Black American individuals, revealing ancestry-related genes primarily involved in immune response and vascular tissue rather than neurons.
  • The identified ancestry-associated differentially expressed genes (DEGs) contribute to heritability for various conditions like ischemic stroke, Parkinson's, and Alzheimer's, highlighting significant differences in gene expression based on genetic ancestry and its implications for brain-related illnesses.
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  • Researchers analyzed genetic data from nearly 1 million individuals to create a comprehensive catalogue of human protein-coding variations, shedding light on gene function and the frequency of rare coding variants.
  • The study identified over 10 million missense and 1.1 million loss-of-function variants, discovering 1,751 novel genes with rare biallelic loss-of-function variants and 3,988 genes intolerant to these variants.
  • They estimate that 3% of people carry a clinically significant genetic variant and provide public access to their data to enhance genetic interpretation and support precision medicine.
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Background Accurate characterization of suspicious small renal masses is crucial for optimized management. Deep learning (DL) algorithms may assist with this effort. Purpose To develop and validate a DL algorithm for identifying benign small renal masses at contrast-enhanced multiphase CT.

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The polygenic architecture of schizophrenia implicates several molecular pathways involved in synaptic function. However, it is unclear how polygenic risk funnels through these pathways to translate into syndromic illness. Using tensor decomposition, we analyze gene co-expression in the caudate nucleus, hippocampus, and dorsolateral prefrontal cortex of post-mortem brain samples from 358 individuals.

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