Publications by authors named "M-C Chang"

Living in isolation is associated with a lack of stimulating experiences, which negatively impacts quality of life and increases risk of advancing cognitive decline for older adults. We examined how engaging in unique events would enhance memory and improve well-being during the COVID-19 pandemic lockdowns, a period characterized by social isolation and monotonous daily experiences lacking diversity. Over 8-weeks during lockdowns, 18 healthy older adults used a smartphone-based application called "HippoCamera", capturing a total of 670 unique and routine events with short audio-video cues that were later replayed to prompt memory.

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  • Researchers are merging unstructured patient data with structured health records to create the MSK-CHORD dataset, consisting of varied cancer types from nearly 25,000 patients at Memorial Sloan Kettering Cancer Center.
  • This dataset allows for in-depth analysis of cancer outcomes using advanced techniques like natural language processing, revealing new relationships that smaller datasets may not show.
  • Using MSK-CHORD for machine learning models, findings suggest that incorporating features from these unstructured texts can better predict patient survival than relying solely on genomic data or cancer staging.
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  • Adequate levels of antiretroviral (ARV) medications are essential for effective HIV treatment and prevention, as monitoring these levels can help prevent issues like treatment failure or drug resistance.
  • Traditional methods for measuring ARVs, such as liquid chromatography-tandem mass spectrometry, are slow and costly, hindering timely intervention.
  • The new REACT assay allows rapid detection of non-nucleoside reverse transcriptase inhibitors (NNRTIs) using a simple portable reader, which could enhance HIV treatment outcomes in point-of-care settings.
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Solid epithelial cancers with significant desmoplasia are characterized by an excessive deposition of collagen-based matrix, which often supports tumor progression. However, the mechanism of how collagen receptors mediate collagen fibrillogenesis still remains mostly unclear. We show that the collagen-binding integrin α11β1 can co-localize with tensin-1 and deposited collagen I in human pancreatic ductal adenocarcinoma (PDAC) stroma.

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Selective degradation of cyclin-dependent kinases 12 and 13 (CDK12/13) emerges as a new potential therapeutic approach for triple-negative breast cancer (TNBC) and other human cancers. While several proteolysis-targeting chimera (PROTAC) degraders of CDK12/13 were reported, none are orally bioavailable. Here, we report the discovery of as a potent, selective, and orally bioavailable CDK12/13 PROTAC degrader.

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  • Biallelic loss of CDK12 is linked to a specific subtype of metastatic castration-resistant prostate cancer (mCRPC), raising questions about its role in cancer development versus exposing drug targets.
  • Research shows that loss of CDK12 leads to early cancer-like changes and enhances cancer cell growth when combined with mutations in other genes like Trp53, while it inhibits tumor growth in the absence of another tumor suppressor gene, Pten.
  • CDK12 loss causes genomic instability and makes tumors sensitive to treatments targeting another protein, CDK13, highlighting CDK12 as a crucial tumor suppressor and suggesting new therapeutic approaches for CDK12-mutant mCRPC.
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Cyclin-dependent kinases 12/13 play pivotal roles in orchestrating transcription elongation, DNA damage response, and maintenance of genomic stability. Biallelic CDK12 loss has been documented in various malignancies. Here, we develop a selective CDK12/13 PROTAC degrader, YJ9069, which effectively inhibits proliferation in subsets of prostate cancer cells preferentially over benign immortalized cells.

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Background: Anterior instability of the sternoclavicular joint (SCJ) is a rare but potentially devastating pathological condition, particularly when it occurs in young or active patients. SCJ reconstruction using hamstring tendon autograft is a commonly used treatment option, yet to date results are limited to small case series. Studies on baseline, preoperative factors and their association with postoperative outcome are limited.

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We present a TALEN-based workflow to generate and maintain dual-edited (IL-15/TGFβR2) iPSCs that produce enhanced iPSC-derived natural killer (iNK) cells for cancer immunotherapy. It involves using a cell lineage promoter for knocking in (KI) gene(s) to minimize the potential effects of expression of any exogenous genes on iPSCs. As a proof-of-principle, we KI IL-15 under the endogenous B2M promoter and show that it results in high expression of the sIL-15 in iNK cells but minimal expression in iPSCs.

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The importance of proper prosthetic placement has been confirmed in numerous studies. The objective of this study was to compare the planned resection angles to the verified intraoperative angles of femoral and tibial varus/valgus, tibial slope, and femoral flexion for each total knee performed using intramedullary (IM) cut guides for both distal femur and proximal tibia cuts. A total of 1,000 total knee arthroplasties (TKAs) were evaluated for this study.

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  • * After the infusion, the patient showed improvements such as decreased creatine kinase levels and enhanced muscle strength, with no significant adverse effects like cytokine release syndrome.
  • * The therapy led to a rapid depletion of peripheral B cells within 15 days, and although B cells returned by two months, autoantibodies decreased significantly, indicating a positive immune response.
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  • Vertebral compression fractures are often linked to osteoporosis but are frequently missed by radiologists, prompting the development of an automated tool for better detection.
  • A study utilized data from the Osteoporotic Fractures in Men Study to train two machine learning models (U-Net and Mask-RCNN) for identifying vertebral bodies in lateral radiographs, achieving high accuracy metrics.
  • The ensemble model combining both methods demonstrated the best performance, especially for severely fractured vertebrae, and showed effectiveness when tested on external data.
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In the CLL14 study, patients with previously untreated chronic lymphocytic leukemia (CLL) and coexisting conditions were randomized to 12 cycles of venetoclax-obinutuzumab (Ven-Obi, n = 216) or chlorambucil-obinutuzumab (Clb-Obi, n = 216). Progression-free survival (PFS) was the primary end point. Key secondary end points included time-to-next-treatment (TTNT), rates of undetectable minimal residual disease (uMRD), overall survival (OS), and rates of adverse events.

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Background: Cardiocerebral infarction (CCI), which is concomitant with acute myocardial infarction (AMI) and acute ischemic stroke (AIS), is a rare but severe presentation. However, there are few data on CCI, and the treatment options are uncertain. We investigated the characteristics and outcomes of CCI compared with AMI or AIS alone.

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Background Comparative performance between artificial intelligence (AI) and breast US for women with dense breasts undergoing screening mammography remains unclear. Purpose To compare the performance of mammography alone, mammography with AI, and mammography plus supplemental US for screening women with dense breasts, and to investigate the characteristics of the detected cancers. Materials and Methods A retrospective database search identified consecutive asymptomatic women (≥40 years of age) with dense breasts who underwent mammography plus supplemental whole-breast handheld US from January 2017 to December 2018 at a primary health care center.

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Purpose To investigate the ability of kilovolt-independent (hereafter, kV-independent) and tin filter spectral shaping to accurately quantify the coronary artery calcium score (CACS) and radiation dose reductions compared with the standard 120-kV CT protocol. Materials and Methods This prospective, blinded reader study included 201 participants (mean age, 60 years ± 9.8 [SD]; 119 female, 82 male) who underwent standard 120-kV CT and additional kV-independent and tin filter research CT scans from October 2020 to July 2021.

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Radiographic assessment plays a crucial role in the management of patients with central nervous system (CNS) tumors, aiding in treatment planning and evaluation of therapeutic efficacy by quantifying response. Recently, an updated version of the Response Assessment in Neuro-Oncology (RANO) criteria (RANO 2.0) was developed to improve upon prior criteria and provide an updated, standardized framework for assessing treatment response in clinical trials for gliomas in adults.

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  • Amyotrophic lateral sclerosis (ALS) primarily affects motor areas of the brain and spinal cord, but this study investigates less understood cerebellar involvement which may worsen symptoms like speech and balance issues.
  • The research involved 113 healthy individuals and 212 ALS patients, focusing on specific genetic groups, to assess changes in cerebellar structure and connectivity over time using advanced neuroimaging techniques.
  • Findings revealed significant reductions in certain cerebellar regions and connectivity impairments in ALS patients, particularly those with sporadic forms of the disease, highlighting the cerebellum's role in the progression of ALS symptoms.
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Background: Lower socioeconomic status and public insurance lead to a longer delay to surgery and a higher likelihood of concomitant pathology before undergoing anterior cruciate ligament reconstruction (ACLR). However, few studies have examined the influence of community deprivation on ACLR timing and outcomes.

Purpose/hypothesis: The primary aim of this study was to define the effect of the area deprivation index (ADI) and insurance classification on access to orthopaedic care after an ACL rupture, and the secondary aim was to determine whether these variables were associated with a second ACL injury after primary ACLR.

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Inflammation mediated by interleukin-6 (IL-6) is strongly associated with cardiovascular risk. Here we evaluated clazakizumab, a monoclonal antibody targeting the IL-6 ligand, in a phase 2b dose-finding study. Adults with cardiovascular disease and/or diabetes receiving maintenance dialysis with high-sensitivity C-reactive protein (hs-CRP) ≥ 2 mg l at baseline were randomized to receive clazakizumab (2.

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Purpose: The purpose of this study was to analyze human corneal endothelial cells (HCECs) morphology and ocular biometrics in premature (PM) children with or without retinopathy of prematurity (ROP).

Methods: Retrospective data on patient demographics, HCECs status, and ocular biometrics with at least 2 visits between 2016 and 2021 were reviewed. The main outcomes were endothelial cell density (ECD), coefficient of variation (CV), hexagonal cell ratio (HEX), central corneal thickness (CCT), axial length, anterior chamber depth, keratometry, corneal diameter, pupil diameter, and refraction status.

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Introduction: Concerns regarding bleeding remain in cold snare polypectomy (CSP) for small pedunculated (0-Ip) polyps. The aim of this study was to compare the risk of CSP and hot snare polypectomy (HSP) for such lesions.

Methods: Data on 0-Ip colorectal polyps ≤10 mm were extracted from a large, pragmatic, randomized trial.

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