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Pacs Viewbook 2026-2027, Program In Audiology And Communication Sciences

PACS News

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A Generalist Institutional Data Repository Offering Both Open And Restricted Access To Support Nih Data Sharing Compliance., Seonyoung Kim, Xing Jian, Marcy Vana

Becker Library Publications and Presentations

In response to the 2023 NIH Data Management and Sharing (DMS) Policy, Washington University School of Medicine in St. Louis launched Digital Commons Data@Becker, a generalist institutional data repository supporting both open and restricted access to research data. Managed by Bernard Becker Medical Library's DMS Team, the repository offers a fully mediated curation workflow that guides researchers through consultation, metadata capture, documentation, and quality control. Draft Digital Object Identifiers (DOIs) can be issued once access type is determined, with final DOI publication following curation and QC. Restricted datasets require Human Research Protection Office (HRPO) review and Data Transfer and Use …

Neurofilament Light Chain But Not Glial Fibrillary Acidic Protein Serum Levels Are Elevated In Wolfram Syndrome, Matthew J Jansen, Heather M Lugar, Cris M Brown, Abby F Tang, Liam J Oiknine, Ling Chen, Jonathan M Koller, Brian A Gordon, Bess A Marshall, Fumihiko Urano, Tamara Hershey

2020-Current year OA Pubs

BACKGROUND: Wolfram syndrome is a rare genetic disorder caused by pathogenic variants in the

OBJECTIVE: To determine if serum NfL and/or GFAP levels are elevated in Wolfram syndrome compared to controls and whether they can serve as monitoring biomarkers.

METHODS: Serum NfL and GFAP levels were log

RESULTS: NfL levels were higher in the Wolfram group relative to all control groups (

CONCLUSION: Serum NfL elevation in Wolfram syndrome may reflect the ongoing, relatively slow neurodegeneration occurring in this disorder. However, without any correspondence between serum levels and currently used clinical and neuroimaging metrics, it has limited utility as a …

Rationale And Trial Design Of Ribolaris: A Phase Ii Trial Of Neoadjuvant And Adjuvant Ribociclib Plus Endocrine Therapy For Clinically High-Risk Hr+/Her2-Negative Breast Cancer, Paul Cottu, Cynthia X Ma, Et Al.

2020-Current year OA Pubs

BACKGROUND: Despite advances in endocrine therapy, patients with hormone receptor-positive (HR+)/human epidermal growth factor receptor 2-negative (HER2-) early breast cancer (eBC) remain at risk of recurrence (ROR). Chemotherapy is often used in high-risk cases, but not all patients benefit.

OBJECTIVES: To evaluate whether chemotherapy can be safely omitted in patients with stage II, grade 2/3 HR+/HER2- eBC who convert to low genomic risk (ROR-low) following neoadjuvant ribociclib plus letrozole.

METHODS: RIBOLARIS (NCT05296746) is an open-label, multicenter phase II trial in patients with stage II, grade 2 or 3, HR+/HER2- eBC defined as high risk based on a Ki-67 index ⩾20% …

Lack Of Disparities In Postoperative Care After Ileocecal Resection In Patients With Crohn's Disease At Tertiary Inflammatory Bowel Diseases Centers, Shannon Coombs, Molly Powell, Kemmian Johnson, Jessica Hu, Mollie Webb, Philip Mcdaniel, Parakkal Deepak, Edward L Barnes

2020-Current year OA Pubs

BACKGROUND: Prior studies suggest that longer drive time (DT) to specialists and higher area deprivation index (ADI) are linked to worse outcomes in inflammatory bowel disease (IBD), but their impact on postileocolic resection (ICR) care in patients with Crohn's disease (CD) is not well defined.

OBJECTIVES: We aimed to evaluate disparities in post-ICR care based on DT and ADI.

METHODS: Spatial analysis was performed with ArcGIS Pro to geocode patient and medical facility addresses with StreetMap Premium locators. High DT was defined as >60 min from the center. Data were analyzed using basic statistics and multivariate logistic regression.

DESIGN: A …

The Impact Of Fixation Method And Surgical Approach On Outcomes Following Hip Hemiarthroplasty For Femoral Neck Fracture, Brian D Rust, Mitchel R Obey, Jenna-Leigh Wilson, Christopher M Mcandrew, Marschall B Berkes

2020-Current year OA Pubs

INTRODUCTION: Hip hemiarthroplasty is commonly performed for displaced femoral neck fractures in older adults, with implants placed either cemented or uncemented. While cemented fixation offers immediate stability, uncemented fixation reduces operative time and pulmonary complications. Large single-center analyses comparing these techniques remain limited, and this study aims to assess this.

METHODS: We conducted a retrospective case-control study of 634 adult patients undergoing hip hemiarthroplasty at a single Level 1 trauma center from 2019 to 2025. Patients were classified by cemented (n=403) or uncemented (n=231) fixation and further stratified by surgical approach (anterolateral vs posterior). Outcomes included length of stay, postoperative …

Sonobiopsy For Enrichment Of Circulating Micrornas In Glioma Patients, Jinyun Yuan, Yuanxiang Li, Chih-Yen Chien, Lu Xu, Andrew H Stark, Siaka Fadera, Zhaoning Gu, Yu Xuan Chin, Kevin Xu, Arash Nazeri, Umeshkumar Athiraman, Xiaowei Wang, Hong Chen, Eric C Leuthardt

2020-Current year OA Pubs

BACKGROUND: Sonobiopsy is a promising new technique that employs focused ultrasound (FUS) to noninvasively enrich brain tumor-derived biomarkers from spatially targeted brain location into the bloodstream. Building upon our recent first-in-human sonobiopsy trial demonstrating enrichment of circulating tumor DNA (ctDNA), here we investigated whether sonobiopsy can enhance the release and detection of tumor-derived microRNAs (miRNAs).

METHODS: Eleven patients with glioma underwent FUS sonication immediately prior to surgical resection. Peripheral blood samples were collected 5 min before and 5, 10, and 30 min after sonication. Plasma and brain tissue miRNA levels were quantified through small RNA sequencing and compared among different …

Frontline Aspiration Versus Stent Retriever Thrombectomy For M2 Occlusions: Insights From The Star Registry, Michael Gaub, Joshua Osbun, Et Al.

2020-Current year OA Pubs

BACKGROUND: Recent trials have furthered uncertainty regarding the endovascular benefit for medium vessel occlusions (MeVO). Stent retrievers (SR) were employed in the first attempt in most interventional arm participants. We sought to compare outcomes in acute MCA M2 occlusions between frontline aspiration and SR, and to delineate procedural and anatomical covariates associated with differential treatment effect.

METHODS: Retrospective analysis of a multicenter stroke thrombectomy cohort identified cases of MT for M2 occlusions. Unmatched and propensity score-matched (PSM) cohorts were generated comparing frontline aspiration to standalone and combined SR. The primary outcome was functional independence (mRS 0-2) at 90 days. Recanalization, …

A Survey-Based Assessment Of Treatment Preferences For Distal Radius Fractures In Participants Aged 65 Years And Older, Zayd Al Rawi, Elizabeth Graesser, Lindley B Wall

2020-Current year OA Pubs

PURPOSE: The management of distal radius fractures (DRF) in patients aged ≥65 years is debated because there is evidence that operative and nonsurgical treatment yield similar outcomes 1 year after injury. When more than one reasonable treatment option exists, shared decision-making between the patient and physician should be used. This study elicited preferences for the treatment of DRF using a survey of participants aged ≥65 years.

METHODS: A survey for participants ≥65 years was administered using Amazon Mechanical Turk. Participants were presented with a theoretical scenario in which they sustained a DRF, followed by two treatment options (surgery or casting) …

Cutibacterium Adaptation To Life On Humans Provides A Potential C Acnes Infection Biomarker, Md Shafiuddin, Wen-Chi Huang, Gabriel William Prather, Jeffrey Ryan Anton, Andrew Lawrence Martin, Sydney Brianna Sillart, Jonathan Z Tang, Michael R Vittori, Michael J Prinsen, Jessica Jane Ninneman, Chandrashekhara Manithody, Jeffrey P Henderson, Alexander W Aleem, Ma Xenia Garcia Ilagan, William H Mccoy 4th

2020-Current year OA Pubs

Propionibacteriaceae appear to have adapted to life on humans during the domestication of cattle. These microbial immigrants formed the genus Cutibacterium, and a descendent of those microbial trailblazers (C acnes) now dominates 25% of human skin. C acnes colonization of human skin requires the protein RoxP. Although all Cutibacteria encode this adaptation to life on humans, nothing like RoxP has been found in any other organism. In this study, we report an extensive assessment of 21 RoxP orthologs, which identified conserved molecular surfaces linked to heme-dependent oligomerization and low pH stability. Our investigation suggests how RoxP helps C acnes dominate …

Phase I Trial Of Adp-A2afp Tcr T-Cell Therapy In Patients With Advanced Hepatocellular Or Gastric Hepatoid Carcinoma, Tim Meyer, Benjamin R Tan, Et Al.

2020-Current year OA Pubs

BACKGROUND & AIMS: Patients with advanced hepatocellular carcinoma (HCC) generally experience poor outcomes despite current therapies, necessitating the development of alternative treatments. ADP-A2AFP is an investigational autologous T-cell therapy with an affinity-enhanced T-cell receptor (TCR) targeting alpha-fetoprotein (AFP).

METHODS: We describe a phase I, open-label, first-in-human clinical trial of ADP-A2AFP (NCT03132792) in human leukocyte antigen-eligible participants with AFP-expressing HCC (or other tumor) not amenable to transplant/resection who progressed on, were intolerant to, or refused prior systemic therapy. Participants received lymphodepletion chemotherapy (cyclophosphamide 500 mg/m

RESULTS: Twenty-one participants, 20 with advanced HCC and one with gastric hepatoid carcinoma received ≥1 ADP-A2AFP …

Coordinated Regulation Of Capping Protein By Carmil And V-1/Myotrophin, John A Hammer, John A Cooper

2020-Current year OA Pubs

Capping Protein (CP) plays a central role in controlling actin filament dynamics in almost all eukaryotic cell types by virtue of its ability to block monomer addition and loss at the barbed end of the actin filament. Like other proteins that control actin assembly, CP is subject to regulation. Here we focus on two direct regulators of CP-CARMIL and V-1/Myotrophin. Specifically, we review recent biochemical, structural, imaging, and cell biological data that argue these two proteins cooperate to create a regulatory cycle for CP that controls its availability, activity, and site of action in the cell. Finally, we discuss unresolved …

Mutations In Hsp40 Co-Chaperone Change The Canonical Interdomain Interactions Stimulating Lgmdd1 Myopathy, Ankan K Bhadra, Geetika Aggarwal, Anshuman Jaysingh, Daniel Chen, Jil Daw, Conrad C Weihl, Heather L True

2020-Current year OA Pubs

Limb-girdle muscular dystrophy D1 (LGMDD1) is a rare, dominantly inherited neuromuscular protein-misfolding chaperonopathy caused by mutations in the Hsp40 co-chaperone DNAJB6, primarily in the glycine-phenylalanine (GF) or J-domains. Currently, no treatments are available, and a challenge in understanding the disease is identifying a specific client protein for DNAJB6 in skeletal muscle. DNAJB6 has homology to the yeast DNAJ family member, Sis1. Our previous research indicated that LGMDD1 GF domain mutants in Sis1 exhibit substrate-specific effects, influenced by Hsp70 activity. Herein, we employed functional assays along with advanced molecular simulation studies to understand the regulatory interdomain interactions in disease-causing mutants of …

Oculomics And Ai: The Eye As A Biomarker For Health Span, Joy Le Yi Wong, Rajendra S Apte, Et Al.

2020-Current year OA Pubs

As the world's population ages, the focus of healthcare is shifting from extending life span to promoting health span. There is an unmet need to identify sensitive and reliable markers of health span through more cost-effective and non-invasive methods, to enable early and effective intervention on modifiable aging factors. The eye offers a unique window into systemic health, providing direct visualization of the body's vascular and neural health. This review presents an overview of how various ocular structures can serve as biomarkers of health span-drawing on insights from ocular imaging, metabolomics, and proteomics, with evidence from basic science, animal models, …

Airway Management In Emergency Department Thoracotomy: A Narrative Review, Aaron J Lacy, Adam Liebendorfer, Sarah M Guess, Rami S Al-Aref, Anthony P Kronfli, Rachel E Armstrong, Amelia W Maiga, Alexander Bracey, Ryan N Barnicle

2020-Current year OA Pubs

INTRODUCTION: Emergency department thoracotomy (EDT) is a high-risk, life-saving intervention for patients in traumatic cardiac arrest. A critical component of EDT is airway management, typically performed by emergency physicians, yet formal guidance regarding optimal strategies remains limited. Airway management in this setting is uniquely complex due to concurrent anatomic injury, physiologic instability, and the procedural demands of thoracotomy.

DISCUSSION: Endotracheal intubation (ETI) during EDT presents multiple challenges. Anatomic difficulties may arise from facial or cervical trauma, restricted positioning, and the presence of cervical collars. Cognitive load is heightened by the chaotic, multidisciplinary environment, requiring strategies such as pre-briefing, checklists, and …

Foot-Specific Exercise Intervention For Forefoot Deformity In Individuals With Type 2 Diabetes And Peripheral Neuropathy: A Randomized Controlled Clinical Trial With 3-Year Follow-Up, J A Zellers, K Steger-May, P K Commean, H-J Jeong, E M Bullard, M J Mueller, M K Hastings

2020-Current year OA Pubs

BACKGROUND: Diabetes with peripheral neuropathy can lead to metatarsophalangeal joint (MTPJ) deformity. The purpose of this study was to estimate the effect of a foot-specific intervention on MTPJ deformity. Secondary aims were determining MTPJ deformity progression over 3 years and predictors of MTPJ deformity progression.

METHODS: Sixty people with type 2 diabetes and peripheral neuropathy were recruited for this randomized controlled clinical trial. Participants were assessed at baseline, 6 months (post-intervention), 1.5 years, and 3 years. A 6-month, foot-specific intervention in the experimental group was compared to a shoulder intervention in the control group. The primary outcome was change in …

Perceived Hiv Risk, Barriers, And Preferences For Hiv Testing In Structurally Vulnerable Communities In St. Louis: A Best-Worst Scaling Survey, Emmanuel K Tetteh, Noelle Le Tourneau, Gregory Gross, Mckenzie Swan, Tyrell Manning, Justin Cole, Katie Wolf, Lawrence Hudson-Lewis, Julia D López, Todd Combs, Virginia R Mckay

2020-Current year OA Pubs

BackgroundPersistent gaps in efforts to end the HIV epidemic in the United States highlight the need for community-specific, evidence-based HIV testing strategies. This study investigated barriers and preferences around HIV testing among underserved populations, including Black, queer, and young adults in the St. Louis, Missouri area.MethodsWe conducted a Best-Worst Scaling (BWS) survey with adults (16+ years) recruited at community events, collecting responses electronically and providing a $25 incentive. The survey assessed the relative importance of 13 potential barriers to HIV testing such as stigma, structural barriers, and perceived HIV risk, chosen based on literature review and community input. Mean preference …

Evaluation Of Mycoplasma Genitalium Positivity And Co-Infection With Chlamydia Trachomatis And/Or Neisseria Gonorrhoeae At Various Care Sites Across The United States, Rebecca Lillis, Stacey House, Et Al.

2020-Current year OA Pubs

OBJECTIVES: We evaluated Mycoplasma genitalium (MG) positivity and co-infection with Chlamydia trachomatis (CT) and/or Neisseria gonorrhoeae (NG), based on results from a trial assessing clinical performance of the Cobas® Liat CT/NG/MG point-of-care test.

METHODS: A prospective, US, multicenter, noninterventional study assessed MG positivity in prospective urine samples (male) and clinician-collected vaginal swabs (female) from symptomatic/asymptomatic patients aged ≥14 years attending various clinical settings. Participants were designated positive or negative for MG, CT, and NG based on combined results from three US Food and Drug Administration-approved assays and one laboratory-developed test. MG co-infection with CT and/or NG was assessed.

RESULTS: Among …

Influence Of Obesity And Insulin Resistance With Hepatic Steatosis On The Human Plasma Lipidome, Max C Petersen, Gordon I Smith, Aaron M Armando, Xiong Su, Oswald Quehenberger, Edward A Dennis, Samuel Klein

2020-Current year OA Pubs

Insulin resistance accompanied by hepatic steatosis is a common complication of obesity. In an effort to identify plasma lipids that could be biomarkers or causes of insulin resistance with steatosis in people with obesity, we evaluated the plasma lipidome in three distinct groups separated by adiposity, hepatic steatosis, and insulin sensitivity, assessed by using the hyperinsulinemic-euglycemic clamp procedure: i) insulin-sensitive lean (ISL, n = 13); ii) insulin-sensitive obese (ISO, n = 14); and iii) insulin-resistant obese with hepatic steatosis (IROS, n = 13). We evaluated 759 complex lipid species in 16 subclasses (including phospholipids, glycerolipids, sphingolipids, acylcarnitines, and cholesteryl esters) …

Identifying Disparities In Same-Day Surgery Cancellations: Impact Of Race And Socioeconomic Factors In A Pediatric Health System, Nicole M Santucci, Daniel Alligood, Amanda Maytin-Hevia, Danyi Wang, Kelly Chilson, Jesse Vrecenak, Andrew Yeh, Colin A Martin

2020-Current year OA Pubs

PURPOSE: Same-day surgery (SDS) cancellations have significant implications on patients and hospitals. This study aimed to identify demographic and socioeconomic factors that impact SDS cancellations across a single pediatric health system.

METHODS: A case-control retrospective review captured patients (age < 18) who underwent SDS procedures from July 2022 to August 2024. Patients were included if they underwent any procedure at three operative sites: a tertiary pediatric academic hospital (PAH) and two outpatient surgery centers (OSC). Patients whose SDS was cancelled (n = 2,034) were compared to those whose surgeries proceeded as scheduled (n = 25,573). Patient zip codes were matched to Child Opportunity Index (COI) 2.0 data.

RESULTS: The overall SDS cancellation rate was 7.37 %, with a significantly higher rate observed at the PAH compared to OSC (11.4 % vs 53 %, p < 0.001). Patients with cancelled cases were more likely to identify as Black and have the lowest quintile COI (p < 0.001). Cancelled in preop and no shows were two reasons with the most racial disparities. In a sub-analysis comparing cancelled cases between operating sites, PAH cancelled patients tended to be Black (23.8 % vs 11.7 %, p < 0.001) and have very low COI (20.1 % vs. 10.6 %, p < 0.001).

CONCLUSION: SDS cancellation rates are significantly higher amongst patients who identify as Black and reside in low opportunity neighborhoods. Disparities in cancellation rate are more significant in patients scheduled at the urban PAH compared …

Beyond Restless Sleep: A Cross-Sectional Study Of Obstructive Sleep Apnea Risk, Aging Biomarkers, And Chronic Low Back Pain, Khalid W Freij, Fiona Bat Agbor, Philemon Domoyeri, Kiari R Kinnie, Asia M Wiggins, Demario S Overstreet, Tammie L Quinn, Shivraj S Grewal, S Justin Thomas, Walid W Freij, Shameka L Cody, Michael A Owens, Robert E Sorge, Burel R Goodin, Edwin N Aroke

2020-Current year OA Pubs

This secondary data analysis aimed to determine the nature of the relationship between obstructive sleep apnea (OSA) risk, biological age acceleration, and nonspecific chronic low back pain (CLBP). In total, 199 adults aged 18-82 years who filled both STOPBANG and pain questionnaires subsetted for secondary analysis. Based on the STOPBANG questionnaire, 104 had a low OSA risk and 95 had an intermediate or high OSA risk. Dunedin Pace of Aging Computed from the Epigenome (DunedinPACE), Horvath's, Hannum's, PhenoAge, and GrimAge clocks were used to determine biological age and pace of biological aging. Individuals with low OSA risk reported increased DunedinPACE …

Lost Before Forgetting: Objective Driving Metrics Track Navigation Deficits Tied To Preclinical Alzheimer's Disease, Yiqi Zhu, Ramkrishna K Singh, Semere Bekena, David C Brown, Chen Chen, Matthew Blake, Jean-François Trani, Ganesh M Babulal

2020-Current year OA Pubs

BACKGROUND AND OBJECTIVES: Navigation is a complex, multisensory process in which subtle changes may emerge before the onset of symptomatic Alzheimer's disease (AD). This study investigated whether navigation abilities were associated with amyloid and tau pathology in cognitively normal older adults.

RESEARCH DESIGN AND METHODS: Among 285 cognitively unimpaired older adults, navigation and objective driving behaviors were assessed using the self-reported Santa Barbara Sense of Direction Scale (SBSOD) and a datalogger, respectively. Amyloid and tau burden were quantified using PET-MRI 2 years post-initial driving data collection. Linear mixed-effects models were used to evaluate the associations between biomarker status and longitudinal …

Clinical Outcomes Following Mechanical Thrombectomy In Pulmonary Embolism Response Team-Consulted Patients: A Retrospective Analysis, Ryan Nolan, Maanasi Samant, Suresh Vedantham, Westley Ohman, Nathan Droz, Kristen Sanfilippo, Pavan Kavali

2020-Current year OA Pubs

PURPOSE: To determine if use of mechanical thrombectomy (MT) impacts survival and additional outcomes in patients with acute intermediate-high-risk and high-risk pulmonary embolism (PE) who were evaluated by a Pulmonary Embolism Response Team (PERT).

METHODS: This retrospective, single-center study included patients with intermediate-high-risk and high-risk PE who received PERT evaluation over 3.5 years and were treated with anticoagulation (AC) alone or MT + AC. The primary outcome was 30-day all-cause mortality, measured with inverse probability of treatment weighting. Exploratory outcomes included survival during the study period, PE-associated/caused mortality, hospital length of stay (LOS), supplemental oxygen at discharge, and MT-related metrics. …

Modeling Clinical Relevance And Risk In Yttrium-90 Radioembolization Of The Liver: Lung Shunt Fraction Variability According To Imaging Modality, Cancer Type, And Tumor Size, M Allan Thomas, Tharun Alamuri, Ryan C Lee, Dan Giardina, John Karageorgiou, Naganathan Mani, Daniel A Braga, Christopher D Malone

2020-Current year OA Pubs

PURPOSE: To test the hypothesis that lung shunt fraction (LSF) in yttrium-90 (

MATERIALS AND METHODS: This was a retrospective analysis of 354 consecutive cases from a 34-month period at a single institution. Cancer type (hepatocellular carcinoma [HCC] vs non-HCC) and maximum tumor size were tracked. LSF was computed from planar imaging (LSF

RESULTS: Median LSF was significantly different (all P < .001) among LSF

CONCLUSIONS: Despite significant variations with imaging modality and correction methods, consistent trends in LSF magnitude with cancer type and tumor size were still uncovered. The relative risk of observing clinically relevant LSF can be modeled for different liver tumor …

Knowledge, Interest, And Willingness Of Hematologists And Oncologists To Care For Adults With Vascular Anomalies, Bryan A Sisk, Anna M Kerr, Sally Cohen-Cutler, Margaret T Lee, Katie Harmoney, Alexandra Borst, Shelley E Crary, Shelbie Fishman, Stephanie Chen, Danielle Cicka, Stephanie Milam, Christine Bereitschaft, Kristen M Sanfilippo

2020-Current year OA Pubs

BACKGROUND: Vascular anomalies (VAs) are rare diseases that cause significant morbidity. Adults with VAs struggle to access expert care. Hematologists and oncologists in adult medicine are positioned to provide expert care, but no prior studies have characterized their openness to this role.

OBJECTIVES: This study characterized the experience, confidence, willingness, and motivating factors for hematologists/oncologists to care for adults with VAs.

METHODS: We surveyed United States hematologists and oncologists in adult medicine between October 2024 and March 2025. The questionnaire assessed knowledge, experience, confidence, and willingness to care for adults with VAs, as well as open-ended questions assessing factors influencing …

Alzheimer's Disease Heterogeneity And Co-Pathologies: Defining Novel Targets, Biomarkers, Modalities, And Research Methodologies, Malú Gámez Tansey, Jorge J Llibre-Guerra, Suzanne E Schindler

2020-Current year OA Pubs

Alzheimer's disease (AD) is a biologically heterogeneous condition with vascular, proteinopathic, metabolic, and immune processes jointly shaping its clinical expression, trajectory of progression, and response to therapeutic intervention. Common AD co-pathologies such as cerebral amyloid angiopathy, Lewy body pathology, α-synuclein, and transactive response DNA-binding protein of 43 kDa (TDP-43)/limbic-predominant age-related TDP-43 encephalopathy are also increasingly connected with cognitive decline and therapeutic response. Significant advances in biomarkers, including seed amplification assays, proteomic signatures, and emerging positron emission tomography tracers bolster the field's understanding of a biological staging model and discovery of previously unrecognized co-pathologies. The Fall 2025 Alzheimer's Association Research Roundtable …

Application Of Machine Learning To Blood-Based Biomarkers Of Alzheimer's Disease In Down Syndrome, Patrick H Luckett, Melissa Petersen, Sid O'Bryant, Mark Mapstone, Brad T Christian, Benjamin Handen, Elizabeth Head, Beau M Ances, Alzheimer's Biomarker Consortium‐Down Syndrome

2020-Current year OA Pubs

INTRODUCTION: Blood-based biomarkers can improve Alzheimer's disease (AD) characterization in Down syndrome (DS). This study applied hierarchical clustering and machine learning-based feature selection to identify biomarkers associated with disease progression.

METHODS: Cross-sectional blood-based biomarkers were analyzed from 211 DS participants (

RESULTS: The strongest predictors overall were neurofilament light chain (NfL), tau/amyloid beta (Aβ)40, Aβ42/Aβ40, alpha-2-macroglobulin (A2M), and interleukin (IL)-10. Within the CS group, NfL, tau/Aβ40, A2M, and IL-10 were strong predictors. In MCI, Aβ42/Aβ40, NfL, A2M, and IL-10 were strong predictors. In DS-AD, Aβ42/Aβ40, NfL, and tau/Aβ40 were the top predictors. Cluster membership varied based on disease stage.

DISCUSSION: …

Perception Of Dementia Risk Among Black Adults: An Ecological Analysis Of Causal Loop Diagrams With A Structural And Social Determinant Of Health Composite Index, Jean-Francois Trani, Ramkrishna K Singh, Alexis Ib Walker, Semere Bekena, Yiqi Zhu, Ganesh M Babulal, Robbie Hart

2020-Current year OA Pubs

INTRODUCTION: To investigate drivers of dementia risk disparities among older Black Americans using a community-based system dynamics (CBSD) approach.

METHODS: Over 18 months, 234 participants created 36 causal loop diagrams (CLDs) on dementia risk. An ecological analysis compared structural differences across groups based on scores on a structural and social determinants of health composite index (S/SDOH-CI).

RESULTS: Groups in the highest SDOH-CI quantile were more likely to identify key protective pathways linking mental health, substance use, exercise, medication, and community support to reduce dementia risk. In contrast, fewer than 25% of low-SDOH-CI groups identified these connections, and under 15% recognized …

Development Of Colonic Polyposis In A Woman With Chronic Myeloid Leukemia Treated With Dasatinib, Guido Pelaez, Behram Suha Yildiz, Mert Candan, Mohammad Ismail, Francesca Vacca, Marianna B Ruzinova, Samuel Ballentine, Kathleen Byrnes, Armin Ghobadi

2020-Current year OA Pubs

INTRODUCTION: Chronic myeloid leukemia (CML) is a hematopoietic malignancy driven by constitutive tyrosine kinase activity. Dasatinib, a second-generation (2G) tyrosine kinase inhibitor (TKI), is a preferred treatment due to its superior, durable, and rapid response rates. While dasatinib has known gastrointestinal (GI) side effects, colonic polyposis is a rare complication, not well described in the literature.

CASE PRESENTATION: Upon routine colonoscopy, a 66-year-old woman with chronic-phase CML was incidentally discovered to have asymptomatic colonic polyposis after 11 months of dasatinib therapy. Histopathology revealed reactive inflammatory changes without evidence of dysplasia or neoplasia. The polyposis resolved completely after cessation of dasatinib. …

Novel Insights Into Early Alzheimer's Disease: Quantitative Gradient Recalled Echo Mri Reveals Preatrophic Neuronal And Myelin Injury Concurrent With Emerging Amyloid Pathology, Satya V V N Kothapalli, Tammie L S Benzinger, Randall J Bateman, Melody Li, Cihat Eldeniz, John C Morris, Dmitriy A Yablonskiy

2020-Current year OA Pubs

BACKGROUND: Brain amyloid accumulation is considered an early sign of Alzheimer's disease (AD) pathology, appearing decades before manifestation of clinical symptoms. However, very little is known about neurodegeneration during this early AD stage. Herein we use quantitative gradient recalled echo (qGRE) magnetic resonance imaging (MRI) to reveal preatrophic microstructural neuronal and myelin damage concurrent with amyloid pathology.

METHODS: qGRE MRI and positron emission tomography (PET) amyloid [

RESULTS: qGRE detected significantly lower gray matter neuronal density and white matter myelination in the group of participants with amyloid level below the conventional amyloid-positive threshold (mean cortical standardized uptake value ratio of …