A phenotypic brain organoid atlas and biobank for neurodevelopmental disorders
Cell Stem Cell. 2025 Nov 3:S1934-5909(25)00374-1. doi: 10.1016/j.stem.2025.10.006. Online ahead of print. ABSTRACT Thousands of genes are associated with neurodevelopmental disorders (NDDs), yet mechanisms and targeted treatments remain elusive. To fill these gaps, we present a California Institute of Regenerative Medicine (CIRM)-initiated NDD biobank of 352 publicly available genetically diverse patient-derived induced pluripotent stem cells […]
Splicing and frameshift variants in QSER1 may be involved in developmental phenotypes
HGG Adv. 2025 Oct 25:100539. doi: 10.1016/j.xhgg.2025.100539. Online ahead of print. ABSTRACT Human development is a complex process that requires precise control of gene expression through regulatory proteins. Recently, heterozygous variants in PRR12, encoding a proline-rich regulatory protein, were found to cause a variable phenotype involving developmental delay/cognitive impairment, neuropsychiatric diagnoses, structural eye anomalies, congenital […]
ACTB deletions or single-nucleotide loss-of-function variants: expansion and further delineation of the phenotype and review of the literature
J Med Genet. 2025 Oct 8:jmg-2025-110631. doi: 10.1136/jmg-2025-110631. Online ahead of print. ABSTRACT BACKGROUND: Pathogenic gain-of-function or dominant-negative effect missense variations in ACTB are associated with a neurodevelopmental disorder characterised by intellectual disability (ID), seizures, sensorineural hearing loss, cerebral, renal and ocular abnormalities and dysmorphic features (Baraitser-Winter cerebrofrontofacial syndrome). ACTB encodes beta-actin, a highly conserved […]
Clinical Genetic Testing in Schizophrenia: A Systematic Review and Meta-Analysis
Biol Psychiatry. 2025 Sep 30:S0006-3223(25)01485-4. doi: 10.1016/j.biopsych.2025.09.010. Online ahead of print. ABSTRACT BACKGROUND: Genetic testing may provide important diagnostic information for individuals with schizophrenia, but the frequency with which clinically significant variants are identified across different testing approaches has not been systematically evaluated. METHODS: We conducted a systematic review and meta-analysis searching MEDLINE, EMBASE, and […]
Biallelic variants in GTF3C3 result in an autosomal recessive disorder with intellectual disability
Genet Med. 2024 Nov 7:101253. doi: 10.1016/j.gim.2024.101253. Online ahead of print. ABSTRACT PURPOSE: This study details a novel syndromic form of autosomal recessive intellectual disability resulting from recessive variants in GTF3C3, encoding a key component of the DNA-binding transcription factor IIIC, which has a conserved role in RNA polymerase III-mediated transcription. METHODS: Exome sequencing, minigene […]
Monoallelic loss-of-function variants in GSK3B lead to autism and developmental delay
Mol Psychiatry. 2024 Oct 29. doi: 10.1038/s41380-024-02806-z. Online ahead of print. ABSTRACT De novo variants adjacent to the canonical splicing sites or in the well-defined splicing-related regions are more likely to impair splicing but remain under-investigated in autism spectrum disorder (ASD). By analyzing large, recent ASD genome sequencing cohorts, we find a significant burden of […]
Clinical factors associated with genetic diagnosis in suspected neurogenetic disorders in a tertiary care clinic
Genet Med. 2024 Oct 10:101252. doi: 10.1016/j.gim.2024.101252. Online ahead of print. ABSTRACT PURPOSE: This study aimed to identify phenotypic factors associated with genetic diagnoses in patients with neurodevelopmental disorders and generate a decision tree to assist clinicians in identifying patients most likely to receive a positive result on genetic testing. METHODS: We retrospectively reviewed the […]
Clinical and Molecular Profiles of a Cohort of Egyptian Patients with Collagen VI-Related Dystrophy
J Mol Neurosci. 2024 Oct 5;74(4):93. doi: 10.1007/s12031-024-02266-8. ABSTRACT Collagen VI-related dystrophies (COL6-RD) display a wide spectrum of disease severity and genetic variability ranging from mild Bethlem myopathy (BM) to severe Ullrich congenital muscular dystrophy (UCMD) and the intermediate severities in between with dual modes of inheritance, dominant and recessive. In the current study, next-generation […]
Clinical and genetic delineation of autosomal recessive and dominant ACTL6B-related developmental brain disorders
Genet Med. 2024 Sep 10:101251. doi: 10.1016/j.gim.2024.101251. Online ahead of print. ABSTRACT PURPOSE: This study aims to comprehensively delineate the phenotypic spectrum of ACTL6B-related disorders, previously associated with both autosomal recessive and autosomal dominant neurodevelopmental disorders. Molecularly, the role of the nucleolar protein ACTL6B in contributing to the disease has remained unclear. METHODS: We identified […]
Clinical and neuroradiological spectrum of biallelic variants in NOTCH3
EBioMedicine. 2024 Aug 26;107:105297. doi: 10.1016/j.ebiom.2024.105297. Online ahead of print. ABSTRACT BACKGROUND: NOTCH3 encodes a transmembrane receptor critical for vascular smooth muscle cell function. NOTCH3 variants are the leading cause of hereditary cerebral small vessel disease (SVD). While monoallelic cysteine-involving missense variants in NOTCH3 are well-studied in cerebral autosomal dominant arteriopathy with subcortical infarcts and […]