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        <title>Frontiers in Genetics | Neurogenomics section | New and Recent Articles</title>
        <link>https://www.frontiersin.org/journals/genetics/sections/neurogenomics</link>
        <description>RSS Feed for Neurogenomics section in the Frontiers in Genetics journal | New and Recent Articles</description>
        <language>en-us</language>
        <generator>Frontiers Feed Generator,version:1</generator>
        <pubDate>2026-05-13T19:50:45.832+00:00</pubDate>
        <ttl>60</ttl>
        <item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fgene.2026.1795752</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fgene.2026.1795752</link>
        <title><![CDATA[Leveraging Hamiltonian neural flow for robust single-cell multi-omics integration: application to Alzheimer’s disease]]></title>
        <pubdate>2026-04-24T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Ziheng Huang</author><author>Wei Kong</author><author>Shuaiqun Wang</author>
        <description><![CDATA[Alzheimer’s disease (AD) progression involves complex molecular interactions across multiple biological layers, yet integrating high-dimensional single-cell multi-omics data remains computationally challenging. While Graph Convolutional Networks (GCNs) effectively model cell-gene interaction topologies, they face three critical limitations: over-smoothing in deep architectures, instability under data perturbations, and lack of mechanistic interpretability—obstacles that impede clinical translation. The Hamiltonian Graph Convolutional Network (HGCN), a physics-inspired framework integrating symplectic dynamics with graph-based learning, is proposed in this study, which incorporates energy-conserving Hamiltonian mechanics to address these limitations through: (1) geometric constraints that prevent over-smoothing, (2) stable gradient propagation via symplectic integration, and (3) interpretable phase space representations of cellular states. To validate the effectiveness of the HGCN model, it was evaluated on three single-cell multi-omics datasets: an AD prefrontal cortex dataset, and peripheral blood benchmarks. Meanwhile, differential analysis emerged as the most effective feature extraction strategy in the evaluated experimental setting through systematic preprocessing comparisons. On the AD composite classification task requiring simultaneous prediction of cell type and disease state, HGCN achieved 92.28% accuracy and 0.9228 F1-score, significantly outperforming baseline GCN (88.59% accuracy, 0.8860 F1-score). Phase space visualization revealed biologically meaningful patterns: Inhibitory neurons exhibited heterogeneous subtype structures, while disease states showed symmetric geometric organization suggesting cell-type-invariant pathological mechanisms. Robustness experiments on citation networks demonstrated superior resilience to both feature and structural perturbations compared to standard GCN, with performance advantages increasing under higher perturbation intensities. These results establish HGCN as a robust, interpretable framework for multi-omics integration in complex disease analysis, with potential applications in precision medicine.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fgene.2026.1799301</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fgene.2026.1799301</link>
        <title><![CDATA[Sez6l promotes neuropathic pain via Wnt5a/Ca2+ pathways in dorsal root ganglion]]></title>
        <pubdate>2026-04-20T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Limin Hu</author><author>Junjie Chen</author>
        <description><![CDATA[BackgroundNeuropathic pain (NP) is a prevalent chronic pain disorder that severely impairs the physical and mental health of patients, affecting 6.9%–10% of the general population. The dorsal root ganglion (DRG) is a crucial locus in the pathogenesis of NP. However, the underlying mechanisms by which DRGs contribute to this condition remain incompletely understood.MethodsHigh-throughput sequencing data of DRGs was downloaded from the Gene Expression Omnibus (GEO) and integrated for analysis. Differential expression analysis combined with multiple machine learning methods was employed to identify candidate genes associated with NP in DRGs. The spared nerve injury (SNI) model was used to assess gene expression patterns. Small interfering RNA-mediated knockdown of the target gene was performed to evaluate its functional role. Bioinformatics analysis and chromatin immunoprecipitation (ChIP) experiments were conducted to explore the transcriptional regulation of the target gene.ResultsSez6l was identified as a candidate gene upregulated in DRGs. In the SNI model, Sez6l was significantly upregulated. Knockdown of Sez6l reduced the expression levels of inflammatory cytokines (IL-6, TNF-α, and IL-1β) and alleviated mechanical allodynia and thermal hyperalgesia in SNI mice. Bioinformatics analysis and ChIP experiments suggested that Foxo1 may enhance the transcription and expression of Sez6l. Mechanistically, Sez6l promoted NP by activating the Wnt5a/Ca2+ signaling pathway in DRGs.ConclusionOur findings suggest that Sez6l, which is transcriptionally regulated by Foxo1, facilitates neuropathic pain through activating the Wnt5a/Ca2+ signaling pathway in DRGs.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fgene.2026.1780231</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fgene.2026.1780231</link>
        <title><![CDATA[PDK4 as a metabolic biomarker of chronic hydrocephalus]]></title>
        <pubdate>2026-03-19T00:00:00Z</pubdate>
        <category>Brief Research Report</category>
        <author>Robbie Clarke</author><author>Payton Villers</author><author>Chloe Bills</author><author>Michaela Rice</author><author>Madison Higgins</author><author>Chan Lee</author><author>Prabir Patra</author><author>Peter H.U. Lee</author><author>Abhay Moghekar</author><author>Joon W. Shim</author>
        <description><![CDATA[BackgroundChronic hydrocephalus (CH) is a heterogeneous neurological disorder characterized by persistent ventricular enlargement and neurovascular dysfunction in the aging brain. Despite its clinical relevance, genetically anchored RNA biomarkers reflecting CH-associated metabolic and stress-related pathology remain poorly defined.MethodsWe performed bulk RNA sequencing of postmortem caudate nucleus tissue from individuals with CH and age-matched neurologically normal controls. Disease-associated transcriptional programs were identified using principal component analysis (PCA), unsupervised hierarchical clustering, and gene set enrichment analysis (GSEA). Key candidate transcripts were validated by RT-PCR. Comparative genomic analyses across mouse, rat, pig, and human genomes examined transcript length, chromosomal positioning, and nucleotide composition.ResultsPCA of the top 1,000 most variable transcripts demonstrated robust separation between CH and controls. Analysis of transcripts ranked 1,001–2,000 independently reproduced disease segregation, indicating distinct transcriptional programs. GSEA revealed significant enrichment of xenobiotic metabolism and oxidative stress pathways, with pyruvate dehydrogenase kinase 4 (PDK4) emerging as the top-ranked gene among ∼40,000 transcripts. RT-PCR confirmed robust PDK4 upregulation. Comparative genomics showed conserved transcript length but increased telomeric proximity and A+T content in humans.ConclusionPDK4: is identified as a prominent RNA marker of chronic hydrocephalus in the elderly, providing a neurogenomic foundation for future fluid-based RNA biomarker development.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fgene.2026.1761205</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fgene.2026.1761205</link>
        <title><![CDATA[Identification of a novel CLCN2 homozygous variant in a man with leukoencephalopathy and infertility: a case report and literature review]]></title>
        <pubdate>2026-02-25T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Lijia Yu</author><author>Weiqing Jiang</author><author>Li Cao</author><author>Zhi Geng</author><author>Jingjiong Chen</author>
        <description><![CDATA[Leukoencephalopathy with ataxia (LKPAT), also known as CLCN2-related leukoencephalopathy, is a rare autosomal recessive disorder caused by pathogenic variants in CLCN2, which encodes ClC-2, a ubiquitously expressed chloride channel protein. However, due to high variability in clinical presentation leading to underdiagnosis, very few cases have been reported since its first description in 2013. The prevalence and genotype–phenotype correlations of LKPAT remain unclear, as do the pathogenic mechanisms of CLCN2 variants. In this study, we reported a Chinese man who presented with dizziness, weakness of the left lower limb, and mild cerebellar ataxia. Notably, the patient had a history of azoospermia. Brain MRI showed symmetrical and confluent white matter abnormalities with hypointense signals on T1-weighted images and hyperintense signals on T2-weighted images. In this patient, a novel biallelic missense variant p.A506V was identified in CLCN2. Through in silico analysis, we observed that substitution of A506 with V506 altered hydrogen bond formation at chloride-binding sites. In addition, the A506V variant impacted the interaction of ClC-2 with GlialCAM, a ClC-2 auxiliary subunit that can physically bind ClC-2 and regulate its biophysical properties and subcellular localization in glial cells. Furthermore, we reviewed the literature and identified potential genotype–phenotype correlations in CLCN2-related diseases. Our results highlight the need for CLCN2 genetic analysis to establish a definitive diagnosis when strong diagnostic clues are present. This study expands the genotypic spectrum of LKPAT, indicates the potential pathogenesis of the CLCN2 A506V variant, and provides valuable insights into further investigation into therapeutics of CLCN2-related leukoencephalopathy.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fgene.2026.1746234</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fgene.2026.1746234</link>
        <title><![CDATA[A SCN1A missense variant (c.4522T>A, p.(Tyr1508Asn) associated with genetic epilepsy with febrile seizures plus: clinical phenotype and genetic analysis of a Chinese pedigree]]></title>
        <pubdate>2026-02-18T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Xiao-Ling Li</author>
        <description><![CDATA[Genetic epilepsy with febrile seizures plus (GEFS+, OMIM 604403) is a clinically and genetically heterogeneous epilepsy spectrum disorder characterized by phenotypic variability and complex inheritance patterns. The SCN1A gene (encoding the α1 subunit of the voltage-gated sodium channel Nav1.1) is the most frequently implicated driver, although variants in other sodium channel genes and synaptic pathway regulators have also been reported. Herein, we describe a GEFS + pedigree identified in clinical practice, with comprehensive genetic and phenotypic characterization. It should be noted that this family has been previously reported in a Chinese publication, and the present study provides further in-depth genetic and clinical analysis based on the original cohort. High-throughput sequencing of the proband followed by Sanger sequencing validation in family members identified a heterozygous missense variant in SCN1A: c.4522T>A p. (Tyr1508Asn). This variant was detected in five affected family members and one asymptomatic carrier. In accordance with the ACMG/AMP guidelines (2015) and ClinGen Epilepsy Sodium Channel Expert Panel specifications (Version 2.0.0), the variant was classified as a Variant of Uncertain Significance (VUS), given its absence from population databases (1000 Genomes, gnomAD, ESP6500) and clinical variant repositories (ClinVar, HGMD), as well as lack of prior literature reports. Co-segregation analysis confirmed consistent association between the variant and GEFS + spectrum phenotypes, and in silico predictions (PolyPhen-2, SIFT, VariantTaster) supported a deleterious effect on protein function. The inheritance pattern was consistent with autosomal dominant inheritance with incomplete penetrance. Structural analysis localized the variant to the intracellular D3-D4 linker of Nav1.1, a domain critical for fast channel inactivation, providing a plausible mechanistic basis for altered neuronal excitability. Our findings expand the spectrum of SCN1A variants associated with GEFS+ and highlight the importance of comprehensive pedigree analysis in deciphering the genetic basis of heterogeneous epilepsy syndromes. These data also provide clinically actionable insights for genetic counseling and precision medicine in affected families once the variant is proven to be pathogenic.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fgene.2026.1769172</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fgene.2026.1769172</link>
        <title><![CDATA[Case Report: Recurrent stroke-like episodes triggered by high-altitude exposure in X-linked charcot-marie-tooth disease]]></title>
        <pubdate>2026-02-12T00:00:00Z</pubdate>
        <category>Case Report</category>
        <author>Jing Zhong</author><author>Tang Yang</author><author>Bo Wu</author><author>Shuai Jiang</author>
        <description><![CDATA[X-linked Charcot-Marie-Tooth disease type 1 (CMTX1) is a rare inherited neuropathy caused by mutations in the GJB1 gene, leading to progressive distal muscle weakness and atrophy. In this case study, a 37-year-old man presented with recurrent episodes of numbness involving the lips, right hand, and foot, followed by right-sided limb weakness and dysarthria four times over the past 20 years. Notably, the last three episodes were consistently triggered within 3 days after descent to sea level following exposure to high-altitude environments (8,500–10,000 feet, with transit above 13,000 feet). Based on the neurologic examination, brain magnetic resonance imaging (MRI), and genetic testing, the patient was diagnosed with X-linked Charcot-Marie-Tooth disease. This case underscores the importance of considering high-altitude exposure as a potential trigger and highlights the value of GJB1 testing in young patients presenting with acute stroke-like episodes and signs of peripheral neuropathy.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fgene.2026.1766081</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fgene.2026.1766081</link>
        <title><![CDATA[G6PD deficiency as a underrecognized genetic risk factor for rare neurological disorders: evidence from a population-based genetic analysis]]></title>
        <pubdate>2026-02-05T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Qi Peng</author><author>Siping Li</author><author>Fen Lv</author><author>Xiaomei Zeng</author><author>Qingqiu Cheng</author><author>Baimao Zhong</author><author>Xiaomei Lu</author>
        <description><![CDATA[BackgroundGlucose-6-phosphate dehydrogenase (G6PD) deficiency is traditionally recognized as a risk factor for drug- or infection-induced hemolytic anemia. Emerging evidence implicates potential roles of G6PD in neurodevelopment, yet its association with rare neurological disorders remains underexplored in population-based genetic studies, especially within the Chinese population.MethodsWe conducted a retrospective case-control study utilizing whole-exome sequencing (WES) data from a Chinese cohort. Six most prevalent pathogenic G6PD variants in China were screended in children with rare neurological disorders (n = 211) and in controls without neurological involvement (n = 202). Genotype and carrier frequency comparisons were performed. Stratified analyses were performed based on diagnostic certainty and the presence of de novo mutations. Multivariable logistic regression was employed to calculate sex-adjusted odds ratios (ORs) to control for potential sex-related confounding.ResultsAfter adjusting for sex, the overall carrier rate of pathogenic G6PD variants was significantly higher in patients with neurological disorders than in controls (adjusted OR = 2.44, 95% CI: 1.18–5.06, p = 0.014). Further comparisons across specific groups revealed distinct patterns: affected male patients had a higher carrier rate than their own unaffected fathers (OR = 2.30, 95% CI: 1.08–4.91, p = 0.043), and mothers of case patients showed a higher carrier rate than mothers of controls (OR = 2.03, 95% CI: 1.09–3.78, p = 0.030). The variants NM_001042351.3: c.1376G>T (G6PD Canton) and NM_001042351.3:c.1388G>A (G6PD Kaiping) were the most prevalent across all groups.ConclusionThis population-based genetic analysis provides preliminary evidence that G6PD deficiency may be a underrecognized genetic risk factor for rare neurological disorders in Chinese children. The findings suggest a potential maternal genetic contribution and indicate that the phenotypic spectrum of G6PD deficiency may extend beyond hematological manifestations to include neurodevelopmental vulnerability. Important limitations include the lack of functional validation and the use of a clinical control group. Further prospective studies incorporating G6PD enzyme activity assessment and functional investigations are warranted to elucidate the underlying mechanisms.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fgene.2026.1632163</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fgene.2026.1632163</link>
        <title><![CDATA[RNA networks of lysosomal-related biomarkers in Parkinson’s disease and their correlations with freezing of gait-associated genes]]></title>
        <pubdate>2026-01-28T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Zheng Qibin</author><author>Lin Lin</author><author>Chen Yibiao</author><author>Lin Peng</author><author>Wang Huiqing</author><author>Su Daoqing</author><author>Yu Lianghong</author>
        <description><![CDATA[BackgroundParkinson’s disease (PD) is influenced by various factors, with lysosome function playing a critical role. However, the specific involvement of lysosome-related genes (LRGs) in PD remains unclear.ObjectiveThis study aims to identify biomarkers specific to PD that exhibit robust disease prediction capabilities.MethodsDatasets for patients with PD, LRGs, and inflammation-related genes (IRGs) were retrieved from online databases. miRNAs and mRNAs within key modules were selected through Weighted Gene Co-expression Network Analysis (WGCNA), revealing strong associations with PD. A miRNA-mRNA network was constructed based on highly correlated PD-related LRGs (PD-LRGs) and miRNAs within these modules. Candidate genes were identified by intersecting target genes, differentially expressed genes (DEGs), PD-LRGs, and module-associated mRNAs. Machine learning and expression validation were employed to confirm these biomarkers. A nomogram was established, and its diagnostic performance was evaluated using a confusion matrix. Drug predictions were conducted based on these biomarkers. Spearman’s correlation analyses were performed to assess the relationship between IRGs, freezing of gait (FOG)-related genes, and biomarkers. Molecular regulatory networks were constructed using datasets and online resources. Finally, clinical samples were collected for quantitative PCR (qPCR) validation of biomarker expression.ResultsKey modules related to PD were identified, comprising 190 miRNAs and 7,633 mRNAs. A miRNA-mRNA network was constructed based on 55 PD-LRGs and 181 miRNAs, resulting in the identification of 26 candidate genes strongly linked to lysosomal function. FGD4 and MAN2B1 were selected as biomarkers, and a gene expression-based risk prediction table was created. These biomarkers were significantly correlated with IRGs and several FOG-related genes. Gene localization analysis revealed that FGD4 and LRRK2, both critical to the FOG pathway, are located on chromosome 12. Drug prediction revealed that Tetrachlorodibenzodioxin and bisphenol A target both FGD4 and MAN2B1. qPCR analysis confirmed that FGD4 and MAN2B1 expression levels were significantly higher in patients with PD compared to healthy controls (p < 0.05).ConclusionFGD4 and MAN2B1 act as lysosomal biomarkers associated with PD and exhibit strong correlations with genes involved in PD-related freezing of gait. This study offers novel insights into PD diagnosis.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fgene.2025.1750113</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fgene.2025.1750113</link>
        <title><![CDATA[Rethinking Parkinson’s disease genetics in the precision medicine era: why genomic diversity matters?]]></title>
        <pubdate>2026-01-12T00:00:00Z</pubdate>
        <category>Opinion</category>
        <author>Camilla Teixeira Pinheiro Gusmão</author><author>Giselli Scaini</author><author>Everton Ferreira de Souza</author><author>Rafael Antônio Vicente Lacerda</author><author>Matheus de Almeida Costa</author><author>Raja Mehanna</author><author>João Quevedo</author><author>Howard Lopes Ribeiro Junior</author>
        <description></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fgene.2025.1769021</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fgene.2025.1769021</link>
        <title><![CDATA[Correction: Case Report: Synergistic effects of an ASXL3 mutation and a 15q11.2 BP1-BP2 microdeletion in a severe neurodevelopmental phenotype]]></title>
        <pubdate>2026-01-09T00:00:00Z</pubdate>
        <category>Correction</category>
        <author>Mingkai Yang</author><author>Yanfang Xiao</author><author>Chanjuan Chen</author><author>Zhou Chu</author><author>Guohong Hu</author>
        <description></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fgene.2025.1674158</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fgene.2025.1674158</link>
        <title><![CDATA[Case Report: Synergistic effects of an ASXL3 mutation and a 15q11.2 BP1-BP2 microdeletion in a severe neurodevelopmental phenotype]]></title>
        <pubdate>2025-12-11T00:00:00Z</pubdate>
        <category>Case Report</category>
        <author>Mingkai Yang</author><author>Yanfang Xiao</author><author>Chanjuan Chen</author><author>Zhou Chu</author><author>Guohong Hu</author>
        <description><![CDATA[BackgroundBainbridge–Ropers syndrome (BRPS, OMIM #615485) and the 15q11.2 BP1-BP2 microdeletion syndrome (OMIM #615656) are distinct genetic aetiologies of neurodevelopmental disorder Dual diagnosis of both entities in a single patient is extremely rare, and the underlying synergistic pathogenesis remains poorly understood.MethodsWe report a 7-month-old boy presenting with severe global developmental delay, hypotonia, feeding difficulties, microcephaly and recurrent respiratory infections. Whole-exome sequencing (WES) was performed and a protein–protein-interaction (PPI) network was constructed using the STRING database to aid molecular diagnosis. Clinical management and 7-month outcome are described.ResultsWES identified a de novo nonsense mutation in ASXL3 (c.1094C>G, p. Ser365*) and a 1.22-Mb 15q11.2 microdeletion (BP1-BP2) inherited from the asymptomatic father, establishing a dual diagnosis. The PPI network revealed no direct or high-confidence (>0.4) interactions between ASXL3 and the 15q11.2 BP1-BP2 microdeletion-encoded proteins CYFIP1, NIPA1, NIPA2 or TUBGCP5, indicating convergence at the pathway rather than the complex level.ConclusionThe 15q11.2 BP1-BP2 microdeletion acts as a genetic modifier that may amplify the phenotypic expression caused by the core mutation in the ASXL3 gene. Haploinsufficiency of CYFIP1, NIPA1, NIPA2, and TUBGCP5 increases neurodevelopmental susceptibility, while the de novo truncating mutation in ASXL3 drives severe epigenetic dysregulation. Together, they precipitate the profound phenotype observed here. This case suggests that multilocus pathogenic variation can generate a blended, severe phenotype and underscores the need to consider polygenic burden plus gene–environment interactions in complex NDD. We proposed a “core mutation - gene regulator - environment” synergy hypothesis model, which is of significant guidance value for genetic counseling and personalized clinical management.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fgene.2025.1719182</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fgene.2025.1719182</link>
        <title><![CDATA[Neuronal intranuclear inclusion disease presenting with recurrent dizziness and headache: a case report with 5-year follow-up]]></title>
        <pubdate>2025-12-08T00:00:00Z</pubdate>
        <category>Case Report</category>
        <author>Limin Li</author><author>Xinghua Luan</author><author>Kai Liu</author><author>Chengzhe Wang</author>
        <description><![CDATA[Neuronal intranuclear inclusion disease (NIID) is a highly heterogeneous chronic neurodegenerative disease characterized by ataxia, extrapyramidal symptoms, peripheral neuropathy, autonomic nervous symptoms, and cognitive dysfunction. So far, recurrent dizziness and headache have been reported in cases of NIID. We report a case of a 71-year-old female patient with NIID, who was followed up for 5 years. The primary manifestations in this patient were episodic dizziness and headache, which are relatively nonspecific symptoms. Due to these characteristics, it is easy to misdiagnose or overlook the disease at the initial diagnosis. The patient exhibited characteristic high signal intensity at the corticomedullary junction on diffusion-weighted imaging (DWI) sequences of the head magnetic resonance imaging (MRI). We diagnosed NIID after detecting round, non-enveloped filamentous structures with a diameter of 1–2 μm within the nuclei of fibroblasts and Schwann cells and revealing 114 repeats of GGC amplification at the 5′end of the NOTCH2NLC gene. The findings of this case study indicate that patients presenting with atypical symptoms should be considered for this disease.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fgene.2025.1690693</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fgene.2025.1690693</link>
        <title><![CDATA[Five novel EP300 variants expand the genetic and phenotypic spectrum of Rubinstein–Taybi syndrome type 2 in Chinese patients]]></title>
        <pubdate>2025-11-20T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Qiang Zhang</author><author>Qi Yang</author><author>Xunzhao Zhou</author><author>Zailong Qin</author><author>Jingsi Luo</author>
        <description><![CDATA[IntroductionRubinstein-Taybi syndrome type 2 (RSTS2; OMIM #613684) is a rare autosomal dominant disorder caused by loss-of-function variants in the EP300 gene (OMIM #602700), characterized by intellectual disability, distinctive craniofacial features, and skeletal anomalies.MethodsWhole-exome sequencing (WES) was performed on five pediatric patients presenting with neurodevelopmental delay. Candidate variants were filtered using the TGex platform and validated by Sanger sequencing for familial segregation analysis. The functional impact of variants was assessed using diverse bioinformatic tools, and pathogenicity classifications were assigned according to ACMG/AMP guidelines.ResultsFive novel EP300 variants were identified in this study: c.4774A>G (p.Lys1592Glu), c.4452 + 5G>C, c.3764A>G (p.His1255Arg), c.3591–2A>G, and c.6439C>T (p.Gln2147*). These alterations impair gene function through mechanisms including amino acid substitution, disruption of mRNA splicing, or premature protein truncation. All variants were classified as pathogenic or likely pathogenic per ACMG/AMP criteria. Literature analysis reveals that the predominant clinical manifestations in the Chinese patients encompassed neurodevelopmental impairment, accompanied by motor delay, growth retardation, and microcephaly. Strikingly, archetypal craniofacial dysmorphisms, such as arched eyebrows, long eyelashes, downslanting palpebral fissures, beaked nose, as well as significant skeletal abnormalities were absent, suggesting EP300 variants may present with a broader and more variable phenotypic spectrum than previously recognized.ConclusionThis study reports five novel pathogenic EP300 variants, expanding the variant repertoire of RSTS2 and providing an important basis for clinical diagnosis and genetic counseling.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fgene.2025.1699311</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fgene.2025.1699311</link>
        <title><![CDATA[Case Report: Co-occurring de novo SHANK3 and SRCAP variants in a patient with autoimmune encephalitis and exhibiting Phelan-McDermid syndrome features]]></title>
        <pubdate>2025-11-06T00:00:00Z</pubdate>
        <category>Case Report</category>
        <author>Li Li</author><author>Jie Zhang</author><author>Xiaoyan Shi</author><author>Yaqing Huang</author><author>Xingzhi Chang</author><author>Liya Zhang</author>
        <description><![CDATA[Phelan-McDermid syndrome (PMS) is a rare neurodevelopmental disorder caused by a deletion or variant of SHANK3. Patients with PMS typically present with global developmental delay, delayed or absent speech, intellectual disability, hypotonia, autism spectrum disorder, behavioral abnormalities, and minor specific dysmorphic features. The SRCAP variation is rare and may be associated with chromatin remodeling and neural development. The SRCAP and SHANK3 phenotypes display certain overlapping features, including impaired intellectual and delayed speech development as well as behavioral and psychiatric problems. We report the case of a young male with significant recurrent neuropsychiatric symptoms, developmental regression, and cerebrospinal fluid white blood cell 72/mm3. The diagnosis was consistent with antibody-negative autoimmune encephalitis; the patient improved after immunomodulatory treatment. Whole-exome sequencing identified two de novo pathogenic frameshift variants, one in SHANK3 and the other in SRCAP, with SRCAP being a chimeric variant. Both variants were novel and pathogenic according to the pathogenicity rating provided by the American College of Medical Genetics and Genomics.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fgene.2025.1702803</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fgene.2025.1702803</link>
        <title><![CDATA[Ataxia, intentional tremor and hypotonia syndrome caused by a novel POU4F1 gene mutation: a case report]]></title>
        <pubdate>2025-10-14T00:00:00Z</pubdate>
        <category>Case Report</category>
        <author>Qisheng Hu</author><author>Feng Zhu</author><author>Wanfen Wang</author><author>Yihang Xu</author><author>Haiyan Ren</author><author>Yanni Zheng</author><author>Yiqing Jiang</author><author>Shaofa Ke</author>
        <description><![CDATA[Childhood-onset ataxia, intention tremor and hypotonia syndrome (ATITHS) is a rare neurological disorder that encompasses features of hereditary ataxia, hypotonia. To date, only one report has associated the pathogenic variant in the POU4F1 gene with ATITHS. We report the case of a 28-year-old male who presented with lifelong gait instability and hypokinesia. The brain magnetic resonance imaging of this patient revealed significant cerebellar atrophy. Genetic analysis identified a novel heterozygous nonsense variant in Pou structural domain class 4 transcription factor 1 (POU4F1), which is predicted to result in loss of normal protein function. Segregation analysis within the family confirmed the presence of this variant in multiple symptomatic relatives. We confirmed diagnosis of ATITHS for this patient. This report provides additional evidence linking this mutation to specific neurologic disorders. We emphasize the importance of genetic testing to determine genetic etiology in patients presenting with ATITHS.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fgene.2025.1676565</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fgene.2025.1676565</link>
        <title><![CDATA[Integrated transcriptomic and single-cell RNA sequencing identifies lysosomal ion channel genes as potential biomarkers for Alzheimer’s disease]]></title>
        <pubdate>2025-10-08T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Xin Wang</author><author>Zelin Wu</author><author>Shaoli Wei</author><author>Xinran Zhao</author><author>Juan Lin</author><author>Fang Zhao</author><author>Xiaolei Liu</author>
        <description><![CDATA[Previous research has highlighted lysosomal ion channel-related genes (LICRGs) as promising therapeutic targets for neurodegenerative diseases. This study aimed to identify and analyze LICRG-associated biomarkers for Alzheimer’s disease (AD), elucidating their underlying biological mechanisms. Three datasets (GSE63061, GSE63060, GSE181279) were analyzed. In GSE63061, intersecting genes were identified by integrating differentially expressed genes (DEGs) from differential expression analysis with key module genes from Weighted Gene Co-expression Network Analysis (WGCNA). Candidate biomarkers were then selected using the MCODE plugin for PPI analysis (top 30 genes), two machine learning approaches, and cross-validation of gene expression profiles in GSE63061 and GSE63060. Single-cell RNA sequencing (scRNA-seq) analysis of GSE181279 identified key biomarkers and cell populations, followed by pseudo-temporal analysis of these cells. Nomogram construction, functional enrichment analysis, immune infiltration assessment, and RT-qPCR analysis were subsequently performed. scRNA-seq analysis revealed that SRP14, EIF3E, and COX7C were prominently expressed across most cell types, particularly in CD4+ T cells, which were identified as key cells in AD. Pseudo-temporal analysis indicated that CD4+ T cells from control subjects primarily resided in early differentiation stages, whereas those from patients with AD were predominantly found in later stages. The reduced expression of these biomarkers in AD CD4+ T cells was consistent with transcriptomic data and further validated by RT-qPCR. A nomogram incorporating these biomarkers demonstrated strong predictive power for AD risk. Functional analysis linked the biomarkers to pathways such as “ribosome” and “oxidative phosphorylation.” Immune infiltration analysis revealed 23 differentially abundant immune cell types, with significant correlations between all three biomarkers and memory CD4+ T cells, mesangial cells, and other immune cell types. This study identified SRP14, EIF3E, and COX7C as novel biomarkers, underscoring CD4+ T cells as pivotal in AD pathogenesis. These findings offer new mechanistic insights and potential therapeutic strategies for AD.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fgene.2025.1629897</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fgene.2025.1629897</link>
        <title><![CDATA[Affective phenotypes in heterozygous LRRK2 R1441G knock-in mice]]></title>
        <pubdate>2025-08-29T00:00:00Z</pubdate>
        <category>Original Research</category>
        <author>Marcus H. F. Ng</author><author>Jimmy W. Y. Lam</author><author>Zoe Y. K. Choi</author><author>Hui-Fang Liu</author><author>Philip W. L. Ho</author><author>Benson W. M. Lau</author><author>Benjamin K. Yee</author>
        <description><![CDATA[Several missense mutations in the LRRK2 gene are linked to familial Parkinson’s disease (PD). Although LRRK2 mutant mouse models typically lack gross motor impairments, their contribution to non-motor PD symptoms remains largely underexplored. In this study, we showed that the R1441G missense mutation promoted behavioural despair in the forced swim test (FST) and led to anhedonia, reflected in reduced sucrose preference, while the typical expression of helplessness in avoidance learning, induced by undermining locus of control, was unaffected. Notably, these depressive phenotypes emerged predominantly in heterozygous R1441G knock-in (KI) mice, and a similar dominant negative phenotype was evident in the elevated plus maze, with heterozygous mutants exhibiting lower anxiety than wild-type (WT) mice. Together, these results suggest that the R1441G mutation may impact select dimensions of affective function in prodromal adult mice, irrespective of sex. In contrast, no overt behavioural phenotypes were detected in cognitive, social, or motor domains, including associative learning, hippocampus-dependent spatial learning, sensorimotor gating, social interaction, motor coordination, grip strength, or spontaneous locomotor activity. Further investigation is warranted to dissect the mechanisms underlying the domain-specific and seemingly dominant-negative behavioural effects of the R1441G mutation, especially in comparison to the behavioural phenotypes associated with other models of LRRK2 mutations.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fgene.2025.1613022</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fgene.2025.1613022</link>
        <title><![CDATA[Case Report: Hereditary neuropathy with liability to pressure palsy (HNPP): the role of genetic investigation in diagnostic assessment]]></title>
        <pubdate>2025-08-14T00:00:00Z</pubdate>
        <category>Case Report</category>
        <author>Salvatore Savasta</author><author>Fabiola Serra</author><author>Lucrezia Galimberti</author><author>Francesco Fabrizio Comisi</author><author>Marcello Cossu</author><author>Alessandro Vannelli</author><author>Maddalena Masala</author><author>Sara Tanca</author><author>Stefania Murru</author>
        <description><![CDATA[Hereditary neuropathy with liability to pressure palsies (HNPP) is a genetic disorder characterized by recurrent focal neuropathies typically occurring at sites of nerve entrapment or compression. It is classically described as a painless condition; however, pain is frequently reported. Due to its rarity and variable clinical presentation, HNPP is often underdiagnosed or initially misdiagnosed. We report the case of a 14-year-old girl who presented with sudden-onset arm weakness and pain following physical activity. The clinical presentation initially raised suspicion for a hereditary demyelinating neuropathy. Although there was no known family history, the patient’s age and the persistence of symptoms supported the hypothesis of a genetic etiology. Neurophysiological studies were consistent with HNPP, which was subsequently confirmed by genetic testing. The primary aim of this report is to emphasize the importance of recognizing the early manifestations of HNPP—including pain, a symptom often underestimated or overlooked—in order to enable prompt diagnosis, reduce unnecessary diagnostic delays, and ensure timely initiation of appropriate genetic counseling. This case supports the notion that pain may represent an early feature of HNPP and should not lead clinicians away from considering this diagnosis.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fgene.2025.1650259</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fgene.2025.1650259</link>
        <title><![CDATA[X chromosome-wide association studies in neurological disorders: uncovering the hidden influence of the X chromosome]]></title>
        <pubdate>2025-07-30T00:00:00Z</pubdate>
        <category>Mini Review</category>
        <author>Kathryn Step</author><author>Thiago Peixoto Leal</author><author>Walaa A. Kamel</author><author>Emily Waldo</author><author>Soraya Bardien</author><author>Ignacio F. Mata</author>
        <description><![CDATA[X chromosome-wide association studies (XWAS) have identified susceptibility variants for various neurodegenerative and neurodevelopmental diseases. The unique characteristics of the chromosome require more complex analytical approaches than standard genome-wide association studies. Over the past 2 decades, refined XWAS methods have better accounted for this biology. Given that many neurological diseases show sex-biased prevalence, XWAS offers a valuable framework for investigating sex-specific genetic contributions. This review summarizes published neurological XWAS (N = 10), highlighting methodological approaches. Despite the challenges of genetic analyses for the X chromosome, XWAS remains a key approach for studying its role in disease mechanisms.]]></description>
      </item><item>
        <guid isPermaLink="true">https://www.frontiersin.org/articles/10.3389/fgene.2025.1622185</guid>
        <link>https://www.frontiersin.org/articles/10.3389/fgene.2025.1622185</link>
        <title><![CDATA[Case Report: The window that closed too soon: lessons from a late CLN2 diagnosis and death of a 9-year-old boy]]></title>
        <pubdate>2025-07-04T00:00:00Z</pubdate>
        <category>Case Report</category>
        <author>Anna Bryzik</author><author>Dawid Larysz</author><author>Patrycja Larysz</author><author>Julia Izabela Karpierz</author><author>Justyna Paprocka</author>
        <description><![CDATA[A class of progressive, autosomal recessive neurodegenerative diseases known as neuronal ceroid lipofuscinoses (NCLs) are brought on by lysosomal protein or enzyme dysfunction. This leads to the pathological buildup of autofluorescent ceroid-lipofuscin in neurons and other tissues. In children and young adults, NCLs are the most frequent cause of dementia and neurodegeneration, and epilepsy, psychomotor regression, visual decline, ataxia, and early death are all examples of clinical characteristics which may appear in the disease’s natural course. Cerliponase alfa (known as Brineura) is an enzyme replacement therapy and has become increasingly important in treating CLN2 disease (late-infantile NCL), which is caused by a deficiency of the lysosomal enzyme tripeptidyl peptidase 1 (TPP1). When started early, it can significantly slow the progression of the disease. We describe the course of a boy’s diagnosis and treatment of CLN2 disease, which demonstrates the negative effects of delayed recognition. NCL was not suspected until more than a year after treatment-resistant epilepsy, progressive ataxia, and psychomotor decline appeared, despite early-onset speech delay, developmental variability, and epileptic seizures beginning at age 3. Clear abnormalities were not found by initial imaging or genetic testing. The child’s neurological decline was already severe by the time biochemical and molecular confirmation of CLN2 disease was obtained at the age of 5, and with increasing seizures, loss of motor and cognitive abilities, vision loss, gastrostomy, tracheostomy, and death at 9 years, he progressed according to the natural course of CLN2. Even with repeated medical contact and neurological evaluations, this case highlights the difficulty of diagnosing NCLs and the significant chance of missing the limited therapeutic window. It emphasizes how neurologists and pediatricians need to be more aware of NCLs as possible causes of developmental regression and early-onset epilepsy. Children with such presentations may benefit from earlier metabolic or enzyme testing, which could increase access to treatments that prolong life and change the disease’s deadly course.]]></description>
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