Abstract 32: Sleep Characteristics and Plasma Biomarkers of Alzheimer’s Disease Pathology, Neurodegeneration, and Neuroinflammation: The Atherosclerosis Risk in Communities Neurocognitive Study (ARIC-NCS)
Introduction: Abnormal sleep has been linked to increased dementia risk, but the pathophysiological processes driving this connection are unclear. To provide insight into the biological pathways underlying the relationship between sleep and brain health, we tested the hypothesis that increased obstructive sleep apnea (OSA) severity and shorter habitual sleep duration are associated with a higher burden of Alzheimer’s disease (AD) pathology, neurodegeneration, and neuroinflammation measured through plasma biomarkers. Methods: ARIC participants who took part in the Sleep Heart Health Study at Visit 4 (1996-98) with stored plasma samples at Visit 3 (1993-95) and Visit 5 (2011-13) were examined (n=261; mean age 61.3 years; 43.3% male). OSA severity, categorized based on the number of apneas and hypopneas per hour of sleep (<5 events/hour [Normal], 5 to <15 events/hour [Mild OSA], or ≥15 events/hour [Moderate/Severe OSA]) was assessed via in-home polysomnography, and average habitual sleep duration (<7 hours, 7 to <8 hours, or ≥8 hours) was self-reported. Plasma biomarkers of amyloid beta (Aβ) 42 and 40, phosphorylated Tau 181 (p-Tau181), neurofilament light chain (NfL), and glial fibrillary acidic protein (GFAP) were measured using Quanterix Simoa immunoassays. Covariate-adjusted linear regression models estimated associations of sleep indices in 1996-98 with standardized plasma biomarker measurements in 1993-95 (3 years earlier) and in 2011-13 (15 years later). Covariate-adjusted linear mixed effects models quantified associations of sleep measures with the 5-year rates of change in standardized biomarker levels (1993-2013). Results: Compared to a habitual sleep duration of 8 hours or more, sleeping less than 7 hours per night was associated with higher NfL, a biomarker of neurodegeneration, 15 years later (β = 0.252; 95% confidence interval [CI]: 0.003, 0.501). Sleep indices were not associated with biomarker levels 3 years earlier. Counter to our hypothesis, Moderate/Severe OSA was associated with slower increases in p-Tau181 (β = -0.102; 95% CI: -0.198, -0.006), a biomarker of AD pathology, over a median of 17.9 years. Conclusions: Short habitual sleep duration may impact dementia outcomes through neurodegenerative and other processes rather than through pathways specific to AD pathology or neuroinflammation. Longitudinal studies with sleep measurements in larger, more diverse samples are needed to further distinguish the pathways linking sleep to dementia.
Evaluating data extraction error by a large language model from randomised controlled trials: a large-scale empirical study
Objective To examine the potential errors of a general large language model (LLM) (ie, Claude 3.5 Sonnet) on data extraction from randomised controlled trials (RCTs). Design and setting An empirical study comparing Claude 3.5 Sonnet extractions against a human-performed verification dataset. The extraction tasks for Claude 3.5 Sonnet were based solely on original RCT portable document format (PDF) files. For PDFs that could not be directly extracted by Claude 3.5 Sonnet, optical character recognition was employed to convert them into text format before extraction. Participants A random sample of 664 trials was selected from a well-established trial bank and a final data pool was established based on rigorous manual cross-checking as a reference standard. Data sources PubMed, EMBASE, Scopus, Web of Science (all databases) and the Cochrane Central Register of Controlled Trials (CENTRAL) up to February 2023. Eligibility criteria for selecting studies RCTs on children involving medication and adverse events. Main outcome measures Claude 3.5 Sonnet was applied to extract the basic information (eg, trial design, population information and source of funding) and adverse outcomes (ie, name of adverse events, number of events). Claude 3.5 Sonnet outputs were compared against the final data pool and all errors were recorded. Results are presented as error rates and with 95% CI, estimated using a generalised linear mixed model. Results For the 664 trials, a total of 23 069 data cells were extracted via Claude 3.5 Sonnet, with 10 624 for basic information and 12 445 for adverse outcomes. The overall error rate for data extraction was 6.6% (95% CI 5.4% to 8.2%), with 5.7% (95% CI 5.2% to 6.1%) in basic information and 7.6% (95% CI 4.9% to 11.8%) in adverse outcomes. When stratified the 1542 total errors by error types, misallocation (assigning data to incorrect fields; 57.1%, 881/1542) and missed or omitted data (incomplete extraction of available data; 23.2%, 357/1542) accounted for the two most frequent errors, with misallocation occurring more in basic information (53.3%, 470/881), while missed or omitted data occurred more in adverse outcomes (96.1%, 343/357). Post hoc analysis examining the association between trial reporting quality (assessed using Consolidated Standards of Reporting Trials (CONSORT) 2025 and LLM data extraction error rates indicated that higher CONSORT adherence was associated with lower extraction error rates. Conclusions The data extraction error of Claude was relatively low, but it alerts LLM applications in evidence synthesis. Detailed checking for LLM outputs should be the primary consideration for evidence synthesisers.
Multi‐Factorial and Multi‐Component Fall Prevention Interventions Initiated From the Emergency Department: A Systemic Review and Meta‐Analysis
ABSTRACT Background Fall risk screening and prevention interventions initiated from the Emergency Department (ED) are endorsed by current national guidelines. We aimed to evaluate the effectiveness of ED‐based multi‐factorial and multi‐component interventions to prevent falls. Methods We conducted a systematic review and meta‐analysis of interventions for fall prevention initiated in the ED for older patients (age ≥ 60 years). Multi‐component and multi‐factorial interventions were included. We excluded studies without a control or comparison group. The published literature was searched from 2019 to May 2024. Risk of bias was assessed with the Newcastle Ottawa tool for observation studies and the Cochrane Risk of Bias v2 for randomized trials. A meta‐analysis was completed for the outcomes with multiple studies. Results The search resulted in 6312 abstracts with 2571 duplicates, for 3741 unique citations. A total of 18 studies were included in the systematic review; 5 were rated as high risk of bias/low quality. The articles were heterogenous in the intervention type (8 multi‐factorial and 8 multi‐component), setting (ED focused vs. outpatient), intervention components (i.e., nurses, physicians, therapists), and size (103–1435 participants). The interventions did not decrease risk of falls at 3 months (risk difference 0.05 95% CI [0.00; 0.09]), 6 months (0.07 [−0.04; 0.18]) or 12 months (−0.02 [−0.11; 0.07]). ED revisits at 1 month (−0.01 [−0.03; 0.00]), 3 months (−0.04 [−0.14; 0.06]), and 12 months (0.02 [−0.05; 0.25]) were also unchanged. Mortality and hospitalization rates were also unaffected. Improvement in functional status was noted in 4 of 5 studies reporting this outcome. Conclusions Multi‐factorial and multi‐component fall prevention interventions initiated from the ED did not decrease falls or recurrent healthcare use. These interventions may improve functional status in older adults at fall risk. Comparisons are limited by the heterogeneity in types of interventions, intervention compliance, and timing of outcomes.
Postapproval Study for Brain-Responsive Neurostimulation for Drug-Resistant Focal Epilepsy
Importance Standard treatment for human papillomavirus (HPV)–associated oropharyngeal carcinoma (OPC) often includes 7 weeks of intensive chemoradiotherapy with substantial toxic effects. Lowering the radiation dose to gross disease may maintain cancer control with fewer toxic effects. Objective To evaluate long-term oncologic outcomes among patients with HPV-associated OPC treated with definitive deintensified (chemo)radiotherapy. Design, Setting, and Participants This cohort study evaluated consecutive patients treated with (chemo)radiotherapy between September 2014 and August 2022 at multiple institutions under one academic hospital system. Eligible patients had p16-positive OPC with a clinical stage from T0 to T3 and N0 to N2c (according to the American Joint Committee on Cancer [AJCC] Staging Manual, seventh edition ) and favorable smoking history. Data were analyzed between August 2023 and October 2025. Interventions Treatment was 60-Gy intensity-modulated radiotherapy with first-choice concurrent chemotherapy of weekly cisplatin, 30 mg/m 2 , or weekly cisplatin, 40 mg/m 2 . Patients with OPC with a clinical stage from T0 to T2 and N0 to N1 (according to AJCC, seventh edition ) were recommended 60-Gy radiotherapy alone. Main Outcomes and Measures Evaluation of locoregional recurrence was the primary outcome. Distant recurrence, progression-free survival (PFS), and overall survival (OS) were secondary outcomes. Results A total of 240 patients received definitive deintensified (chemo)radiotherapy (207 receiving prospective protocol-adherent treatment and 33 receiving non–protocol-adherent treatment). Mean (SD) patient age was 60.3 (9.9) years (range, 33.0-84.0 years); 206 (85.8%) were male, and 34 (14.2%) were female. The cohort included 139 never smokers (57.9%) and 101 former smokers (42.1%) (median smoking history, 9.0 pack-years [range, 0.25-50.0 pack-years]). Concurrent chemotherapy was prescribed for 205 patients (85.4%), with 185 (77.1%) receiving cisplatin, and 165 (68.8%) receiving weekly cisplatin, 30 mg/m 2 . Median follow-up for surviving patients was 6.5 years (range, 0.44-11.0 years; 208 of 210 [99.0%] with minimum 2-year follow-up). Outcomes were as follows: 2-year OS was 97.9% (95% CI, 96.1%-99.7%), and 5-year OS, 92.4% (95% CI, 89.0%-96.0%); 2-year PFS, 94.1% (95% CI, 91.2%-97.2%), and 5-year PFS, 86.5% (95% CI, 82.1%-91.0%); 2-year locoregional recurrence, 1.3% (95% CI, −0.2% to 2.7%), and 5-year locoregional recurrence, 3.4% (95% CI, 1.1%-5.8%); 2-year distant recurrence, 4.6% (95% CI, 1.9%-7.3%), and 5-year distant recurrence, 7.3% (95% CI, 3.9%-10.7%). The median time to progression events was 1.9 years (range, 0.3-5.1 years); 12 of 26 recurrences (46.2%) occurred after 2 years. Thirty-three patients with low-risk disease (clinical stage T0-T2, N0-N1, according to AJCC, seventh edition ) received radiotherapy alone, which resulted in a 5-year PFS of 93.8%, with no patients experiencing a locoregional recurrence. Conclusions and Relevance In this cohort study, modest dose deintensification of 60-Gy radiotherapy in patients with HPV-associated OPC shows favorable rates of locoregional control. These findings provide support for ongoing investigations of deintensified radiotherapy.
The Impact of Endoscopic Ultrasound and Multidisciplinary Team Evaluation on the Management of Pancreatic Cystic Lesions
ABSTRACT Background Retrospective evaluations of multidisciplinary team (MDT) review of pancreatic cystic lesions (PCL) demonstrate improved PCL management. Endoscopic ultrasound (EUS) evaluates PCL for worrisome features; however, its influence on MDT is unclear and may be attenuated by anchoring/confirmation bias. We aimed to evaluate the impact of EUS and the overall performance of MDT evaluation of PCL. Methods Four mock MDT sessions at two institutions were presented imaging from 40 consecutive PCL cases (20 “high‐risk” with advanced neoplasia, 20 “low‐risk” with pathologic low‐grade dysplasia or ≥ 3 years of non‐progression on surveillance), with and without upfront EUS/FNA (cytology, CEA, Amylase), in a randomized, crossover design. Group 1 adjudicated without EUS, Group 2 adjudicated with EUS, and Group 3 adjudicated with EUS after initially adjudicating without it. Results The cohort included branch‐duct ( n = 20), mixed type ( n = 6), and main duct ( n = 4) IPMN, MCN ( n = 5), and non‐mucinous PCL ( n = 5). Group 2 (EUS) correctly identified mucinous PCL with 97% sensitivity and 70% specificity, significantly higher than Group 1 (No EUS) (Sensitivity 91%, Specificity 20%; p = 0.04). Group 3 (Unblinded to EUS) performed significantly worse in mucinous PCL identification compared with Group 2, indicating cognitive bias (Sensitivity 97%, Specificity 10% ( p = 0.0003)). Group 2 correctly identified high‐risk PCL that required surgical intervention with 85% sensitivity and 85% specificity, significantly higher than Group 1 (Sensitivity 60%, Specificity 75%; p = 0.0016) and Group 3 (Sensitivity 73%, Specificity 80%, p = 0.0485). Conclusion While susceptible to cognitive bias, EUS significantly improves MDT assessment of PCL. MDT establishes a high bar for iterative additions of biomarkers to PCL analysis.
Toward a Diagnostic Template for Acquired Apraxia of Speech: Insights From an Academy of Neurologic Communication Disorders Review
Purpose: Significant variation is observed in diagnostic assessments for individuals with acquired apraxia of speech (AOS). The lack of consistency across research related to AOS impacts the comparison of intervention outcomes. This extends to diagnostic criteria, assessment, and the inclusion of patient demographics. This viewpoint examines outcomes related to the consistency in diagnostic tool use and collection of demographic information and introduces a template to support researchers and clinicians conducting diagnostic evaluations. Materials include guidelines for a thorough case history, current diagnostic characteristics, and diagnostic assessment tools available for describing AOS. The template illustrates how such materials can be structured and applied in research and clinical practice. Method: The recommendations provided in this viewpoint are part of a recent systematic review about AOS treatment outcomes. Trained raters extracted data from a comprehensive literature search from 1951 to April 2024 using a consensus protocol. Results: Of the 92 studies included in data extraction, demographic information such as age, gender, etiology, and months post-onset was commonly reported, and information about race and ethnicity (described in 15% of studies), socioeconomic status (0%), current/previous occupation (8%), language history (10%), and education (59%) was described less frequently. Reported diagnostic characteristics varied across studies, reflecting differences in using discriminatory versus nondiscriminatory features. Concomitant diagnoses, such as aphasia severity (37%) and presence of dysarthria (32%), were not consistently reported or described. Conclusion: A template with specific criteria and assessments can support research replication, raise awareness of diagnostic strategies, and offer a structured framework for investigators and clinicians. Supplemental Material: https://doi.org/10.23641/asha.32012346
Beyond social media: the era of generative AI and intelligent digital platforms in nephrology education
Background: Previous studies suggest that internalized HIV stigma (IHS) results in HIV viral nonsuppression via directly increasing depression, which then reduces adherence leading to nonsuppression; however, the dynamics between IHS and mental health are likely more complex. We sought to better understand IHS-mental health dynamics using data from a longitudinal clinical cohort of people with HIV (PWH) receiving healthcare across 10 US primary care clinics. Methods: Among 8,506 PWH who had ≥2 timepoints in which IHS, depression, and anxiety were measured, we examined changes over time in both two-state (i.e., impact of IHS on depression or anxiety and vice versa) and four-state combinations of depression-IHS (i.e., no depression or IHS, depression/no IHS, no depression/IHS, both depression/IHS) and anxiety-IHS. Transition probabilities between states and factors influencing transitions were identified using multistate Markov models. Results: The impact of IHS on the transition rates of mental health measures (i.e., depression, anxiety) and vice versa were almost the same, suggesting that each influences the other. Over 50% of PWH remained in the same IHS-depression or IHS-anxiety state. PWH with IHS had almost twice the rate of transitioning from no depression/anxiety to having depression/anxiety compared to PWH without IHS; with similar results for the depression or anxiety with no IHS to reporting IHS transition. Conclusions: We demonstrate that IHS and mental health dynamics are more complex than previously suspected and that the associations are bidirectional, which has implications for both future analyses and optimal management of these conditions among PWH.
Association of the Mediterranean Diet With White Matter Integrity Among Hispanic or Latino Adults