as Candidate Gene for Neurodevelopmental Disorders: Identification of a Pathogenic De Novo Frameshift Variant.

Zinc finger proteins are frequently implicated in a wide range of neurodevelopmental disorders (NDDs). In this study, we report a case of mild intellectual disability (ID), global developmental delay (GDD), and developmental coordination disorder (DCD) in an individual with unaffected parents. Trio-based whole-exome sequencing (WES) identified a de novo variant (c.

Investigating the role of a novel hemizygous FAAH2 variant in neurological and metabolic disorders.

Fatty acid amide hydrolase 2 (FAAH2) is an enzyme involved in the degradation of endocannabinoids in humans. Altered FAAH2 activity has been implicated in various neurological and psychiatric conditions. We describe a male patient presenting with anxiety disorder, autistic-like traits, and borderline intellectual functioning (BIF), as well as metabolic disturbances including obesity and hepatic steatosis.

Clinical Application of a Customized Gene Panel for Identifying Autism Spectrum Disorder-Associated Variants.

: Autism spectrum disorder (ASD) is a neurodevelopmental disorder that belong to genetic and epigenetic mechanism. Despite the recent advantages in next-generation sequencing (NGS) technology, ASD etiology is still unclear. : In this study, we tested a customized target genetic panel consisting of 74 genes in a cohort of 53 ASD individuals.

Strengthening the Role of as a Potential Gene Associated with Neurodevelopmental Disorders.

The 26S proteasome is a large, ATP-dependent proteolytic complex responsible for degrading ubiquitinated proteins in eukaryotic cells. It plays a crucial role in maintaining cellular protein homeostasis by selectively eliminating misfolded, damaged, or regulatory proteins marked for degradation. In this study, whole-exome sequencing (WES) was performed on an individual presenting with developmental delay and mild intellectual disability, as well as on both of his unaffected parents.

MAN2A2-related glycosylation defects in autism and cognitive delay.

Glycosylation is a post-translational modification essential for proper protein folding and function, with significant roles in diverse biological processes, including neurogenesis. MAN2A2 enzyme is required for proper N-glycan trimming/maturation in the N-glycosylation pathway. Whole-exome sequencing of a trio revealed two potentially causative variants in the MAN2A2 gene in a patient with autism spectrum disorder (ASD) and cognitive delay.

Genetic screening of tuberous sclerosis complex in Sicily with a focus on neurological manifestations.

Tuberous Sclerosis Complex (TSC) is an autosomal dominant disorder characterized by widespread hamartomas and prominent neurological involvement. It results from pathogenic variants in the TSC1 or TSC2 genes, leading to hyperactivation of the mTOR pathway and consequent dysregulation of cell growth. These tumor suppressor genes encode hamartin and tuberin, proteins critical for regulating cell proliferation, neuronal excitability and synaptogenesis.

Potential Association of the Gene with Moderate Intellectual Disability, Anxiety Disorder, and Obsessive-Compulsive Personality Traits.

is a gene involved in various biological processes and is highly expressed in the central nervous system, where it plays a key role in complement activity, brain circuit development, and cognitive function. It has been implicated as a susceptibility gene for schizophrenia and a causative factor in developmental epileptic encephalopathy, neurodevelopmental disorders, and intellectual disability. However, no MIM phenotype number has been assigned to for a specific disorder.

Investigating the Role of the Zinc Finger Protein ZC2HC1C on Autism Spectrum Disorder Susceptibility.

: Zinc finger proteins are important transcription factors that regulate gene expression and play a critical role in neurodevelopment including autism spectrum disorders (ASDs). They are involved in a variety of cellular processes, including cell proliferation, differentiation, and apoptosis. : Whole-exome sequencing (WES) analysis on a patient diagnosed with ASD.

Potential Role of Gene in Pudendal Nerve Neuropathy and Interstitial Cystitis.

Background/objectives: Symptoms of pudendal nerve neuropathy may overlap with various symptoms of interstitial cystitis (IC). As documented, there is a well-established correlation between the genes involved in ATP metabolism, neuropathy, and IC. ATP-binding cassette (ABC) transporters genes, in fact, are vital for ATP signaling.

Exploring the Role of , a New Potential Gene Involved in Borderline Intellectual Functioning, Psychological and Metabolic Disorders.

AMPylation is a post-translational modification involving the transfer of adenosine monophosphate (AMP) from adenosine triphosphate (ATP) to target proteins, serving as a critical regulatory mechanism in cellular functions. This study aimed to expand the phenotypic spectrum associated with mutations in the FICD gene, which encodes an adenyltransferase enzyme involved in both AMPylation and deAMPylation. A clinical evaluation was conducted on a patient presenting with a complex clinical profile.

PPP2R5E: New gene potentially involved in specific learning disorders and myopathy.

Protein phosphatase 2A (PP2A) is a family of multifunctional enzymatic complexes crucial for cellular signalling, playing a pivotal role in brain function and development. Mutations in specific genes encoding PP2A complexes have been associated with neurodevelopmental disorders with hypotonia and high risk of seizures. In the current work, we present an individual with specific learning problems, motor coordination disorders, hypotonia and behavioural issues.

: New Potential Candidate Gene for Periventricular White Matter Abnormalities.

Hypoxic-ischemic brain damage presents a significant neurological challenge, often manifesting during the perinatal period. Specifically, periventricular leukomalacia (PVL) is emerging as a notable contributor to cerebral palsy and intellectual disabilities. It compromises cerebral microcirculation, resulting in insufficient oxygen or blood flow to the periventricular region of the brain.

Bioinformatic Evaluation of Genetic Variant: Implications for Neurodevelopmental and Psychiatric Symptoms.

The Krüppel-like factor (KLF) family represents a group of transcription factors (TFs) performing different biological processes that are crucial for proper neuronal function, including neuronal development, synaptic plasticity, and neuronal survival. As reported, genetic variants within the KLF family have been associated with a wide spectrum of neurodevelopmental and psychiatric symptoms. In a patient exhibiting attention deficit hyperactivity disorder (ADHD) combined with both neurodevelopmental and psychiatric symptoms, whole-exome sequencing (WES) analysis revealed a de novo heterozygous variant within the Krüppel-like factor 13 () gene, which belongs to the KLF family and regulates axonal growth, development, and regeneration in mice.

Implications of a Variant in the Gene in a Patient with Generalized Epilepsy, Intellectual Disability, and Childhood Emotional Behavioral Disorders.

() genes, a recently discovered gene family, play crucial roles in the regulation of neuronal stem cell proliferation and glial differentiation during nervous system development and neurogenesis. Whole exome sequencing (WES) in patients presenting with generalized epilepsy, intellectual disability, and childhood emotional behavioral disorder, uncovered a variation within gene. Notably, this gene has never been associated with neurodevelopmental disorders.

A de novo ARIH2 gene mutation was detected in a patient with autism spectrum disorders and intellectual disability.

E3 ubiquitin protein ligase encoded by ARIH2 gene catalyses the ubiquitination of target proteins and plays a crucial role in posttranslational modifications across various cellular processes. As prior documented, mutations in genes involved in the ubiquitination process are often associated with autism spectrum disorder (ASD) and/or intellectual disability (ID). In the current study, a de novo heterozygous mutation was identified in the splicing intronic region adjacent to the last exon of the ARIH2 gene using whole exome sequencing (WES).

Next Generation Sequencing and Electromyography Reveal the Involvement of the Gene in Myopathy.

Ion channelopathies result from impaired ion channel protein function, due to mutations affecting ion transport across cell membranes. Over 40 diseases, including neuropathy, pain, migraine, epilepsy, and ataxia, are associated with ion channelopathies, impacting electrically excitable tissues and significantly affecting skeletal muscle. Gene mutations affecting transmembrane ionic flow are strongly linked to skeletal muscle disorders, particularly myopathies, disrupting muscle excitability and contraction.

Whole Exome Sequencing as a First-Line Molecular Genetic Test in Developmental and Epileptic Encephalopathies.

Developmental and epileptic encephalopathies (DEE) are severe neurodevelopmental disorders characterized by recurrent, usually early-onset, epileptic seizures accompanied by developmental impairment often related to both underlying genetic etiology and abnormal epileptiform activity. Today, next-generation sequencing technologies (NGS) allow us to sequence large portions of DNA quickly and with low costs. The aim of this study is to evaluate the use of whole-exome sequencing (WES) as a first-line molecular genetic test in a sample of subjects with DEEs characterized by early-onset drug-resistant epilepsies, associated with global developmental delay and/or intellectual disability (ID).

STXBP6 Gene Mutation: A New Form of SNAREopathy Leads to Developmental Epileptic Encephalopathy.

Syntaxin-binding protein 6 (STXBP6), also known as amysin, is an essential component of the SNAP receptor (SNARE) complex and plays a crucial role in neuronal vesicle trafficking. Mutations in genes encoding SNARE proteins are often associated with a broad spectrum of neurological conditions defined as "SNAREopathies", including epilepsy, intellectual disability, and neurodevelopmental disorders such as autism spectrum disorders. The present whole exome sequencing (WES) study describes, for the first time, the occurrence of developmental epileptic encephalopathy and autism spectrum disorders as a result of a de novo deletion within the gene.

Fibroblast Growth Factor Receptor 2 (FGFR2), a New Gene Involved in the Genesis of Autism Spectrum Disorder.

Autism spectrum disorder (ASD) is a long-known complex neurodevelopmental disorder, and over the past decades, with the enhancement of the research genomic techniques, has been the object of intensive research activity, and many genes involved in the development and functioning of the central nervous system have been related to ASD genesis. Herein, we report a patient with severe ASD carrying a G > A de novo variant in the FGFR2 gene, determining a missense mutation. FGFR2 encodes for the ubiquitous fibroblast growth factor receptor (FGFR) type 2, a tyrosine kinase receptor implicated in several biological processes.

Specific Learning Disorders: Variation Analysis of 15 Candidate Genes in 9 Multiplex Families.

: Specific Learning Disorder (SLD) is a complex neurobiological disorder characterized by a persistent difficult in reading (dyslexia), written expression (dysgraphia), and mathematics (dyscalculia). The hereditary and genetic component is one of the underlying causes of SLD, but the relationship between genes and the environment should be considered. Several genetic studies were performed in different populations to identify causative genes.

Related Disorder: Description of a New Case.

() gene, located in the short arm of chromosome 11, encodes for BHC80, a component of the Lysine Specific Demethylase 1, Corepressor of REST (LSD1-CoREST) complex. BHC80 is mainly expressed in the human fetal brain and skeletal muscle and acts as a modulator of several neuronal genes during embryogenesis. Data from literature relates variants with Potocki-Shaffer Syndrome (PSS), a contiguous gene deletion disorder caused by the haploinsufficiency of , , and genes.

Identification of a Novel Missense Mutation of Gene in a Cohort of Sicilian Patients with Leukodystrophy.

Recessive mutations in the POLR3A gene cause POLR3-HLD (the second-most-common form of childhood-onset hypomyelinating leukodystrophy), a neurodegenerative disorder featuring deficient cerebral myelin formation. To date, more than 140 POLR3A (NM_007055.3) missense mutations are related to the pathogenesis of POLR3-related leukodystrophy and spastic ataxia.