A de novo GFAP variant, p.R376W, was identified in a child presenting with hypotonia, developmental delay, and abnormal brain MRI. Following the 2015 ACMG variant classification guidelines and the functional studies showing protein aggregate formation in vitro, p.R376W should be classified as a pathogenic variant, causative for Alexander disease.
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http://dx.doi.org/10.1002/ccr3.655 | DOI Listing |
Alzheimers Res Ther
December 2024
Department of Neurology, Ulm University Hospital, 89081, Ulm, Germany.
Introduction: The differentiation between Alzheimer's disease (AD) and behavioral-variant frontotemporal dementia (bvFTD) can be complicated in the initial phase by shared symptoms and pathophysiological traits. Nevertheless, advancements in understanding AD's diverse pathobiology suggest the potential for establishing blood-based methods for differential diagnosis.
Methods: We devised a novel assay combining immunoprecipitation and mass spectrometry (IP-MS) to quantify Amyloid-beta (Aβ) peptides in plasma.
J Neurol Neurosurg Psychiatry
December 2024
Queen Square Multiple Sclerosis Centre, Department of Neuroinflammation, UCL Queen Square Institute of Neurology, London, UK
Background: Alexander disease is an autosomal dominant leukodystrophy caused by heterozygous pathogenic variants in the glial fibrillar acidic protein (GFAP) gene. Although increasingly recognised, there is evidence that Alexander disease, particularly later-onset disease, is significantly underdiagnosed and its true prevalence is unknown (the only population-based prevalence was estimated at one in 2.7 million).
View Article and Find Full Text PDFJ Neurol Sci
December 2024
Neuropsychiatry, Royal Melbourne Hospital, 300 Grattan, St Parkville, VIC 3052, Australia; Department of Psychiatry, University of Melbourne, Grattan St Parkville, 3052 Melbourne, VIC, Australia.
Objective: Timely, accurate distinction between behavioural variant frontotemporal dementia (bvFTD) and primary psychiatric disorders (PPD) is a clinical challenge. Blood biomarkers such as neurofilament light chain (NfL) and glial fibrillary acidic protein (GFAP) have shown promise. Prior work has shown NfL helps distinguish FTD from PPD.
View Article and Find Full Text PDFNPJ Genom Med
November 2024
Department of Epidemiology and Public Health, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
The genetic architecture of white matter lesions (WMLs) in Asian populations has not been well-characterized. Here, we performed a genome-wide association study (GWAS) to identify loci associated with the WML volume. Brain MRI and DNA samples were collected from 9479 participants in the Japan Prospective Studies Collaboration for Aging and Dementia (JPSC-AD).
View Article and Find Full Text PDFProc Natl Acad Sci U S A
November 2024
Department of Biomolecular Chemistry, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705.
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