JAMA neurology最新文献

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Trends in Gender, Racial, and Ethnic Representation Among US Neurology Faculty. 美国神经病学教职员工的性别、种族和民族代表性趋势。
IF 20.4 1区 医学
JAMA neurology Pub Date : 2024-11-18 DOI: 10.1001/jamaneurol.2024.3909
Chia-Chen Tsai, Chen Hu, Jeffrey Ding, Esther Bui, Aleksandra Pikula, Thalia S Field, Sabeen Tiwana, Javed Siddiqi, Faisal Khosa
{"title":"Trends in Gender, Racial, and Ethnic Representation Among US Neurology Faculty.","authors":"Chia-Chen Tsai, Chen Hu, Jeffrey Ding, Esther Bui, Aleksandra Pikula, Thalia S Field, Sabeen Tiwana, Javed Siddiqi, Faisal Khosa","doi":"10.1001/jamaneurol.2024.3909","DOIUrl":"10.1001/jamaneurol.2024.3909","url":null,"abstract":"","PeriodicalId":14677,"journal":{"name":"JAMA neurology","volume":" ","pages":""},"PeriodicalIF":20.4,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142647948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Clinical Presentation, Investigation Findings, and Outcomes of IgG4-Related Pachymeningitis: A Systematic Review. IgG4 相关性脑脊髓膜炎的临床表现、检查结果和预后:系统回顾
IF 20.4 1区 医学
JAMA neurology Pub Date : 2024-11-18 DOI: 10.1001/jamaneurol.2024.3947
Sara Terrim, João Vitor Mahler, Flávio Vieira Marques Filho, Leandro Tavares Lucato, Henrique Mayrink Giardini, Tarso Adoni, Guilherme Diogo Silva
{"title":"Clinical Presentation, Investigation Findings, and Outcomes of IgG4-Related Pachymeningitis: A Systematic Review.","authors":"Sara Terrim, João Vitor Mahler, Flávio Vieira Marques Filho, Leandro Tavares Lucato, Henrique Mayrink Giardini, Tarso Adoni, Guilherme Diogo Silva","doi":"10.1001/jamaneurol.2024.3947","DOIUrl":"https://doi.org/10.1001/jamaneurol.2024.3947","url":null,"abstract":"<p><strong>Importance: </strong>Immunoglobulin G4 (IgG4)-related disease is an increasingly recognized fibroinflammatory condition that can involve multiple organs, including the pachymeninges. The understanding of IgG4-related pachymeningitis (IgG4-RP) remains limited because of its rarity and the predominance of knowledge derived from case reports and case series.</p><p><strong>Objective: </strong>To systematically review and synthesize the clinical presentation, investigation findings, and prognosis of IgG4-RP to better understand its diagnosis and management.</p><p><strong>Evidence review: </strong>A comprehensive systematic review was conducted following guidelines from the Preferred Reporting Items for Systematic Reviews and Meta-analyses. PubMed/MEDLINE, Embase, and Scopus were searched from their inception until May 30, 2023, using terms related to IgG4-related disease and pachymeningitis without language or publication restrictions. Case reports and series that met the 2020 Revised Comprehensive Diagnostic Criteria or the 2019 American College of Rheumatology/European League Against Rheumatism classification criteria were included. Data on clinical presentations, investigation findings, and treatment outcomes were extracted and summarized.</p><p><strong>Findings: </strong>A total of 148 case reports contributed data from 208 patients. Their median (IQR) age was 52 (39-62) years; 132 patients were male (63.5%) and 76 female (36.5%). Headache and cranial nerve dysfunctions were the most common neurological manifestations. Systemic involvement was identified in nearly half of the patients. Diagnostic imaging often showed preferential involvement of cavernous sinus and middle fossa. Laboratory results highlighted elevated serum IgG4 levels in 97 of 147 patients (65%) of patients and cerebrospinal fluid pleocytosis in 43 of 82 patients (52%). Storiform fibrosis or obliterating phlebitis were uncommon pathological findings. Mortality was below 1% (1/134; 0.7%), but only a third of patients presented complete clinical improvement, and the recurrence rate was 60 patients (40%) in a median (IQR) follow-up time of 9 (1-20) months. Glucocorticoids were the most commonly prescribed treatment, in 143 of 169 patients (85%); rituximab was prescribed as maintenance therapy in 53 of 169 patients (31%).</p><p><strong>Conclusions and relevance: </strong>IgG4-RP commonly presents with headaches and cranial nerve dysfunction, posing diagnostic challenges due to the significant absence of systemic manifestations, low IgG4 serum levels, and atypical pathological findings. Current treatment outcomes are limited by incomplete recovery and frequent relapses underscoring the necessity for new treatment strategies.</p>","PeriodicalId":14677,"journal":{"name":"JAMA neurology","volume":" ","pages":""},"PeriodicalIF":20.4,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142647943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Amyloid-Related Imaging Abnormalities in Clinical Trials of Gantenerumab in Early Alzheimer Disease. 甘特宁单抗治疗早期阿尔茨海默病临床试验中与淀粉样蛋白相关的成像异常。
IF 20.4 1区 医学
JAMA neurology Pub Date : 2024-11-18 DOI: 10.1001/jamaneurol.2024.3937
Stephen Salloway, Jakub Wojtowicz, Nicola Voyle, Christopher A Lane, Gregory Klein, Marco Lyons, Simona Rossomanno, Francesca Mazzo, Szofia Bullain, Frederik Barkhof, Tobias Bittner, Andres Schneider, Michael Grundman, Roxana Aldea, Mercè Boada, Janice Smith, Rachelle Doody
{"title":"Amyloid-Related Imaging Abnormalities in Clinical Trials of Gantenerumab in Early Alzheimer Disease.","authors":"Stephen Salloway, Jakub Wojtowicz, Nicola Voyle, Christopher A Lane, Gregory Klein, Marco Lyons, Simona Rossomanno, Francesca Mazzo, Szofia Bullain, Frederik Barkhof, Tobias Bittner, Andres Schneider, Michael Grundman, Roxana Aldea, Mercè Boada, Janice Smith, Rachelle Doody","doi":"10.1001/jamaneurol.2024.3937","DOIUrl":"10.1001/jamaneurol.2024.3937","url":null,"abstract":"&lt;p&gt;&lt;strong&gt;Importance: &lt;/strong&gt;Data from 2 phase 3 studies of gantenerumab, GRADUATE I/II, and their open-label extensions represent a resource to further characterize amyloid-related imaging abnormalities (ARIA), including long-term sequelae.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Objectives: &lt;/strong&gt;To describe the characteristics of ARIA and risk factors and clinical consequences of ARIA-edema (ARIA-E).&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Design, setting, and participants: &lt;/strong&gt;Secondary data collection from the GRADUATE I/II phase 3 randomized, double-blind, placebo-controlled, 116-week parallel-group studies and their open-label extensions, including PostGraduate, with up to 210 (mean, 125) weeks of total gantenerumab treatment were conducted between 2018 and 2023. The study included multicenter trials at 288 sites across 30 countries. GRADUATE I/II enrolled 985 and 980 participants, respectively, with early symptomatic Alzheimer disease (AD) and amyloid-beta (Aβ) pathology who were aged 50 to 90 years. PostGraduate enrolled 1382 participants (671 previously randomized to gantenerumab). Data were analyzed from November 2, 2022, to October 10, 2023.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Interventions: &lt;/strong&gt;GRADUATE I/II participants were randomized 1:1 to gantenerumab or placebo. Nine-month uptitration was used to mitigate ARIA risk.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Main outcomes and measures: &lt;/strong&gt;Postbaseline safety monitoring, including brain magnetic resonance imaging (MRI) findings, and adverse events and cognitive assessments.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Results: &lt;/strong&gt;The safety-evaluable MRI population of GRADUATE I/II comprised 1939 participants (mean age, 71.7 years; 1105 female [57.0%]). Severity of AD-related Aβ neuropathology (lower cerebrospinal fluid [CSF] Aβ42, hazard ratio [HR] for CSF Aβ42: 0.4; 95% CI, 0.2-0.7) and comorbid cerebrovascular pathology (Fazekas score: HR, 1.6; 95% CI, 1.3-2.0; total superficial siderosis count: HR, 1.9; 95% CI, 1.3-2.6; total microhemorrhage count: HR, 1.3; 95% CI, 1.0-1.5) may be important baseline risk factors for ARIA-E, in addition to apolipoprotein E (APOE) ε4 status (APOE ε4 heterozygous carrier: HR, 2.0; 95% CI, 1.4-2.8 and APOE ε4 homozygous carrier: HR, 4.7; 95% CI, 3.2-6.7). At the group level, ARIA-E did not impact long-term cognitive and functional performance (relative difference in adjusted means for Clinical Dementia Rating-Sum of Boxes was -9% in pooled GRADUATE analysis at week 116 and when censored at first ARIA-E). While taking gantenerumab, ARIA-E and ARIA-hemosiderin occurred in 24.9% (247 of 993) and 22.9% (227 of 993) participants, respectively; first ARIA-E occurred by week 64 in 86.2% (213 of 247) of participants with ARIA-E. Narratives are provided for all serious symptomatic ARIA-E cases.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Conclusions and relevance: &lt;/strong&gt;These results show that in addition to APOE ε4 allele count, severity of Aβ neuropathology and comorbid cerebrovascular pathology may be relevant for clinicians prescribing anti-Aβ monoclonal antibodies for early AD an","PeriodicalId":14677,"journal":{"name":"JAMA neurology","volume":" ","pages":""},"PeriodicalIF":20.4,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142647940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
AI Devices in Neurology-Moving From Diagnosis to Prognosis. 神经病学中的人工智能设备--从诊断到预后。
IF 20.4 1区 医学
JAMA neurology Pub Date : 2024-11-18 DOI: 10.1001/jamaneurol.2024.3835
James M Hillis, Edward R Scheffer Cliff, Kerstin N Vokinger
{"title":"AI Devices in Neurology-Moving From Diagnosis to Prognosis.","authors":"James M Hillis, Edward R Scheffer Cliff, Kerstin N Vokinger","doi":"10.1001/jamaneurol.2024.3835","DOIUrl":"https://doi.org/10.1001/jamaneurol.2024.3835","url":null,"abstract":"","PeriodicalId":14677,"journal":{"name":"JAMA neurology","volume":" ","pages":""},"PeriodicalIF":20.4,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142647929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Epileptiform Electrographic Patterns After Cardiac Arrest 心脏骤停后的癫痫样电图模式
IF 29 1区 医学
JAMA neurology Pub Date : 2024-11-11 DOI: 10.1001/jamaneurol.2024.3831
Andrea O. Rossetti, Sarah Benghanem
{"title":"Epileptiform Electrographic Patterns After Cardiac Arrest","authors":"Andrea O. Rossetti, Sarah Benghanem","doi":"10.1001/jamaneurol.2024.3831","DOIUrl":"https://doi.org/10.1001/jamaneurol.2024.3831","url":null,"abstract":"This Viewpoint challenges conventional clinical practice that eschews pharmacological intervention for comatose patients with epileptiform abnormalities after cardiac arrest using evidence from the Treatment of Electroencephalographic Status Epilepticus after Cardiopulmonary Resuscitation (TELSTAR) trial.","PeriodicalId":14677,"journal":{"name":"JAMA neurology","volume":"95 1","pages":""},"PeriodicalIF":29.0,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142598511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Frailty Trajectories Preceding Dementia in the US and UK 美国和英国老年痴呆症前的虚弱轨迹
IF 29 1区 医学
JAMA neurology Pub Date : 2024-11-11 DOI: 10.1001/jamaneurol.2024.3774
David D. Ward, Jonny P. Flint, Thomas J. Littlejohns, Isabelle F. Foote, Marco Canevelli, Lindsay M. K. Wallace, Emily H. Gordon, David J. Llewellyn, Janice M. Ranson, Ruth E. Hubbard, Kenneth Rockwood, Erwin Stolz
{"title":"Frailty Trajectories Preceding Dementia in the US and UK","authors":"David D. Ward, Jonny P. Flint, Thomas J. Littlejohns, Isabelle F. Foote, Marco Canevelli, Lindsay M. K. Wallace, Emily H. Gordon, David J. Llewellyn, Janice M. Ranson, Ruth E. Hubbard, Kenneth Rockwood, Erwin Stolz","doi":"10.1001/jamaneurol.2024.3774","DOIUrl":"https://doi.org/10.1001/jamaneurol.2024.3774","url":null,"abstract":"ImportanceAn accessible marker of both biological age and dementia risk is crucial to advancing dementia prevention and treatment strategies. Although frailty is a candidate for that role, the nature of the relationship between frailty and dementia is not well understood.ObjectiveTo clarify the temporal relationship between frailty and incident dementia by investigating frailty trajectories in the years preceding dementia onset.Design, Setting, and ParticipantsParticipant data came from 4 prospective cohort studies: the English Longitudinal Study of Ageing, the Health and Retirement Study, the Rush Memory and Aging Project, and the National Alzheimer Coordinating Center. Data were collected between 1997 and 2024 and were analyzed from July 2023 to August 2024. The settings were retirement communities, national-level surveys, and a multiclinic-based cohort. Included individuals were 60 years or older and without cognitive impairment at baseline. Included individuals also had data on age, sex, education level, and ethnicity and a frailty index score calculated at baseline.ExposureFrailty was the main exposure, with participants’ degrees of frailty quantified using retrospectively calculated frailty index scores.Main Outcomes and MeasuresIncident all-cause dementia ascertained through physician-derived diagnoses, self- and informant-report, and estimated classifications based on combinations of cognitive tests.ResultsThe participant number before exclusions was 87 737. After exclusions, data from 29 849 participants (mean [SD] age, 71.6 [7.7] years; 18 369 female [62%]; 257 963 person-years of follow-up; 3154 cases of incident dementia) were analyzed. Bayesian generalized linear mixed regression models revealed accelerations in frailty trajectories 4 to 9 years before incident dementia. Overall, frailty was positively associated with dementia risk (adjusted hazard ratios [aHRs] ranged from 1.18; 95% CI, 1.13-1.24 to 1.73; 95% CI, 1.57-1.92). This association held among participants whose time between frailty measurement and incident dementia exceeded the identified acceleration period (aHRs ranged from 1.18; 95% CI, 1.12-1.23 to 1.43; 95% CI, 1.14-1.80).Conclusions and RelevanceThese findings suggest that frailty measurements may be used to identify high-risk population groups for preferential enrolment into clinical trials for dementia prevention and treatment. Frailty itself may represent a useful upstream target for behavioral and societal approaches to dementia prevention.","PeriodicalId":14677,"journal":{"name":"JAMA neurology","volume":"154 1","pages":""},"PeriodicalIF":29.0,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142598508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Gantenerumab in Dominantly Inherited Alzheimer Disease-Reply. 甘特宁单抗治疗显性遗传性阿尔茨海默病--回复。
IF 20.4 1区 医学
JAMA neurology Pub Date : 2024-11-11 DOI: 10.1001/jamaneurol.2024.3828
Olivia Wagemann, Eric McDade, Randall J Bateman
{"title":"Gantenerumab in Dominantly Inherited Alzheimer Disease-Reply.","authors":"Olivia Wagemann, Eric McDade, Randall J Bateman","doi":"10.1001/jamaneurol.2024.3828","DOIUrl":"https://doi.org/10.1001/jamaneurol.2024.3828","url":null,"abstract":"","PeriodicalId":14677,"journal":{"name":"JAMA neurology","volume":" ","pages":""},"PeriodicalIF":20.4,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142620720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Gantenerumab in Dominantly Inherited Alzheimer Disease. 甘特宁单抗治疗显性遗传性阿尔茨海默病
IF 20.4 1区 医学
JAMA neurology Pub Date : 2024-11-11 DOI: 10.1001/jamaneurol.2024.3825
Nunzio Pomara, Bruno Pietro Imbimbo
{"title":"Gantenerumab in Dominantly Inherited Alzheimer Disease.","authors":"Nunzio Pomara, Bruno Pietro Imbimbo","doi":"10.1001/jamaneurol.2024.3825","DOIUrl":"https://doi.org/10.1001/jamaneurol.2024.3825","url":null,"abstract":"","PeriodicalId":14677,"journal":{"name":"JAMA neurology","volume":" ","pages":""},"PeriodicalIF":20.4,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142620708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Immediate or Delayed Statin in Acute Atherosclerotic Ischemia. 急性动脉粥样硬化性缺血时立即或延迟服用他汀类药物
IF 20.4 1区 医学
JAMA neurology Pub Date : 2024-11-04 DOI: 10.1001/jamaneurol.2024.3747
Anastasios Kollias, Konstantinos G Kyriakoulis, Kyriakos Dimitriadis
{"title":"Immediate or Delayed Statin in Acute Atherosclerotic Ischemia.","authors":"Anastasios Kollias, Konstantinos G Kyriakoulis, Kyriakos Dimitriadis","doi":"10.1001/jamaneurol.2024.3747","DOIUrl":"https://doi.org/10.1001/jamaneurol.2024.3747","url":null,"abstract":"","PeriodicalId":14677,"journal":{"name":"JAMA neurology","volume":" ","pages":""},"PeriodicalIF":20.4,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142568648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Deferiprone in Alzheimer Disease: A Randomized Clinical Trial. 去铁酮治疗阿尔茨海默病:随机临床试验
IF 20.4 1区 医学
JAMA neurology Pub Date : 2024-11-04 DOI: 10.1001/jamaneurol.2024.3733
Scott Ayton, David Barton, Bruce Brew, Amy Brodtmann, Roger Clarnette, Patricia Desmond, David Devos, Kathryn A Ellis, Amir Fazlollahi, Caroline Fradette, Anita M Y Goh, Pawel Kalinowski, Christopher Kyndt, Rosalyn Lai, Yen Ying Lim, Paul Maruff, Terence J O'Brien, Christopher Rowe, Olivier Salvado, Peter W Schofield, Michael Spino, Fernando Tricta, Aaron Wagen, Robert Williams, Michael Woodward, Ashley I Bush
{"title":"Deferiprone in Alzheimer Disease: A Randomized Clinical Trial.","authors":"Scott Ayton, David Barton, Bruce Brew, Amy Brodtmann, Roger Clarnette, Patricia Desmond, David Devos, Kathryn A Ellis, Amir Fazlollahi, Caroline Fradette, Anita M Y Goh, Pawel Kalinowski, Christopher Kyndt, Rosalyn Lai, Yen Ying Lim, Paul Maruff, Terence J O'Brien, Christopher Rowe, Olivier Salvado, Peter W Schofield, Michael Spino, Fernando Tricta, Aaron Wagen, Robert Williams, Michael Woodward, Ashley I Bush","doi":"10.1001/jamaneurol.2024.3733","DOIUrl":"10.1001/jamaneurol.2024.3733","url":null,"abstract":"&lt;p&gt;&lt;strong&gt;Importance: &lt;/strong&gt;Interventions that substantially slow neurodegeneration are needed to address the growing burden of Alzheimer disease (AD) to societies worldwide. Elevated brain iron observed in AD has been associated with accelerated cognitive decline and may be a tractable drug target.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Objective: &lt;/strong&gt;To investigate whether the brain-permeable iron chelator deferiprone slows cognitive decline in people with AD.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Design, setting, and participants: &lt;/strong&gt;This phase 2, double-masked, placebo-controlled randomized clinical trial of 12-month duration was conducted at 9 sites in Australia between August 2, 2018, and April 1, 2023. Patients older than 54 years with amyloid-confirmed mild cognitive impairment or early AD (a Mini-Mental State Examination score of 20 or higher) were screened. Randomization was 2:1 and masked to participants and all study staff.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Interventions: &lt;/strong&gt;Deferiprone 15 mg/kg twice a day or placebo administered orally for 12 months.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Main outcomes and measures: &lt;/strong&gt;The primary outcome was a composite cognitive measure assessed at baseline, 6 months, and 12 months using a neuropsychological test battery (NTB) of memory, executive function, and attention tasks. Secondary outcomes included change in brain iron burden measured by quantitative susceptibility mapping (QSM) magnetic resonance imaging (target engagement), brain volume changes (secondary efficacy measure), and adverse events (safety analysis).&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Results: &lt;/strong&gt;Of 167 patients screened for eligibility, 81 were included, with 53 randomly assigned to the deferiprone group (mean [SD] age, 73.0 [8.0] years; 29 male [54.7%]) and 28 to the placebo group (mean [SD] age, 71.6 [7.2] years; 17 male [60.7%]); 54 participants completed the study (7 [25.0%] withdrew from the placebo group and 20 [37.7%] from the deferiprone group). In an intention-to-treat analysis, participants in the deferiprone group showed accelerated cognitive decline on the NTB primary outcome (β for interaction = -0.50; 95% CI, -0.80 to -0.20) compared with placebo (change in NTB composite z score for deferiprone, -0.80 [95% CI, -0.98 to -0.62]; for placebo, -0.30 [95% CI, -0.54 to -0.06]). Secondary analysis revealed that this result was driven by worsening performance on executive function tests. The QSM confirmed that deferiprone decreased iron in the hippocampus compared with placebo (change in hippocampal QSM for deferiprone, -0.36 ppb [95% CI, -0.76 to 0.04 ppb]; for placebo, 0.32 ppb [95% CI, -0.12 to 0.75 ppb]; β for interaction = -0.68 [95% CI, -1.27 to -0.09]). Longitudinal hippocampal volume loss was not affected by deferiprone, but exploratory analysis of other brain regions revealed increased volume loss with deferiprone in frontal areas. The frequency of the adverse effect of neutropenia (4 participants [7.5%] in the deferiprone group) was higher than in similar studies (1.6%-4.4%).&lt;/p&gt;&lt;p&gt;&lt;strong&gt;C","PeriodicalId":14677,"journal":{"name":"JAMA neurology","volume":" ","pages":""},"PeriodicalIF":20.4,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11536302/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142568645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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