1,344 results match your criteria: "Inner Ear Syndromic Sensorineural Hearing Loss"

THBS1 is a new autosomal recessive non-syndromic hearing impairment gene.

BMC Med Genomics

December 2024

Center for Statistical Genetics, Gertrude H. Sergievsky Center, Department of Neurology, Columbia University Medical Center, New York, NY, USA.

Background: Prelingual hearing impairment (HI) is genetically highly heterogenous. Early diagnosis and intervention are essential for psychosocial development. In this study we investigated a consanguineous family from Pakistan with autosomal recessive (AR) non-syndromic sensorineural HI (NSHI).

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Background And Objectives: Susac syndrome (SuS) is a rare disorder characterized by encephalopathy, branch retinal artery occlusion, and sensorineural hearing loss, often accompanied by vertigo. Recent updates to diagnostic criteria and treatment guidelines have been made. This study examines clinical manifestations; disease activity; and risk factors of disability, dependency, and return to work in patients with SuS.

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The AGBL5 gene encodes for the Cytoplasmic Carboxypeptidase 5 (CCP5), an α-tubulin deglutamylase that cleaves the γ-carboxyl-linked branching point of glutamylated tubulin. To date, pathogenic variants in AGBL5 have been associated only with isolated retinitis pigmentosa (RP). Hearing loss has not been reported in AGBL5-caused retinal disease.

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Introduction: Sudden sensorineural hearing loss (SSNHL) is idiopathic in 70-90% of cases with 10-30% linked to vascular injuries, viral infections, or autoimmune inner ear disease (AIED). AIED contributes to less than 1% of all hearing losses, categorized into primary, affecting only the inner ear, and secondary, associated with systemic autoimmune diseases (SAID). This study examines the prevalence and features of AIED in SSNHL in a tertiary referral center.

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Article Synopsis
  • MYO15A gene mutations are linked to severe sensorineural deafness, impacting those both before and after they acquire language, with a novel mutation (c.2482C>T) found in a Chinese Uighur family identified in this study.* -
  • Researchers created induced pluripotent stem cells (iPSCs) from family members to explore how the MYO15A mutation affects hair cell-like cells, which are important for hearing.* -
  • The findings revealed that the mutation caused noticeable differences in the structure and function of these cells, indicating a possible link to hearing loss, while not affecting the iPSCs' ability to become different cell types.*
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Introduction: Susac's syndrome is a rare autoimmune disorder characterised by a triad of encephalopathy (brain dysfunction), branch retinal artery occlusion (loss of vision) and sensorineural hearing loss. This study presents the case of a patient undergoing intensive physiotherapy intervention following an injury, focusing on assessments such as volume and range of motion measurements, manual muscle tests, and pain intensity evaluations using various scales.

Case Description: The patient, aged 17, initially presented with severe limitations in mobility, diagnosed with Susac syndrome.

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Background: LHX3 is a gene encoding a LIM-homeodomain transcription factor important for the fetal development of several organs, such as the pituitary gland, spinal motor neurons and the inner ear. Pathogenic and likely pathogenic variants in the LHX3 gene are infrequent and result in a rare syndrome known as combined pituitary hormone deficiency-3, CPHD3.

Methods: We have studied hearing and vestibular functions in a group of eight individuals, aged 8-36 years, all of whom were homozygous for a specific variant in the LHX3 gene at chromosome 9q34.

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To determine the genetic causes of sensorineural hearing loss (SNHL) associated with inner ear anomalies, 11 unrelated Turkish individuals diagnosed with SNHL and an inner ear anomaly using temporal bone computed tomography and inner ear magnetic resonance imaging underwent exome or whole genome sequencing to identify underlying genetic defects. None of the individuals was diagnosed with a recognized syndrome. Four of the 11 probands were homozygous for variants, , , , and .

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EAST syndrome - Epilepsy, Ataxia, Sensorineural hearing loss, and renal Tubulopathy - is an autosomal recessive disorder affecting the potassium channel in the brain, inner ear, and basolateral membrane of the distal nephron of the kidney. The mutation in the gene is responsible for defective potassium transport in those locations, resulting in seizures, hearing loss, and hypokalemia. Imaging findings of this disease are typical, such as cerebellar hypoplasia and signal changes in bilateral dentate nuclei, midbrain, pons, and medulla, with variable restricted diffusion due to intramyelinic edema.

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Phenotyping vestibulocochlear manifestations in Susac syndrome: a cohort study.

Eur Arch Otorhinolaryngol

October 2024

Department of Otorhinolaryngology, Department of Head and Skin, Ghent University Hospital, Ghent, Belgium.

Article Synopsis
  • The study aims to understand how the vestibulocochlear system is affected in patients with Susac syndrome (SuS), which is a rare condition that impacts the brain, eyes, and inner ear.
  • A review of 21 patient files shows that most experienced various audiovestibular symptoms, including vertigo and sensorineural hearing loss, with specific audiological and vestibular testing revealing common patterns of dysfunction.
  • The findings suggest that early treatment with immunosuppressive therapy can help prevent severe audiovestibular problems, indicating the need for more research to understand the underlying causes and improve patient outcomes.
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Introduction: Congenital deafness is a pathological entity that represents an economical and social burden, affecting up to 0.2% of newborns in Europe. Sensorineural hearing loss (SHL) is caused by a variety of factors, including congenital abnormalities, perinatal infectious diseases and genetic syndromes.

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Genotype Characterization and MiRNA Expression Profiling in Usher Syndrome Cell Lines.

Int J Mol Sci

September 2024

Molecular Diagnostic Research Laboratory, Center for Sensory Neuroscience, Boys Town National Research Hospital, Omaha, NE 68010, USA.

Article Synopsis
  • Usher syndrome (USH) is a genetic disorder that causes hearing loss, vision loss due to retinitis pigmentosa, and balance issues, classified into three types without early detection biomarkers.
  • The study investigated the differences in microRNA (miRNA) expression in cell lines from USH patients versus healthy controls, using Epstein-Barr virus to transform lymphocytes for analysis.
  • Findings showed 92 miRNAs were differentially expressed in USH, with specific patterns tied to each type, and three crucial miRNAs associated with sensory development were notably downregulated, offering potential insights for identifying USH.
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Cochlear implantation in a familial rare syndromic ossification-related deafness and literature review.

Acta Otolaryngol

October 2024

Department of Otorhinolaryngology and Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, P. R. China.

Article Synopsis
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Article Synopsis
  • Autosomal recessive non-syndromic deafness-28 (DFNB28) is a type of prelingual sensorineural hearing loss linked to mutations in the TRIOBP gene, which was identified in a pediatric patient with novel genetic variants.
  • The patient's hearing assessment showed bilateral deafness, and comprehensive whole exome sequencing was used to identify these genetic mutations.
  • The analysis found two significant variants in the TRIOBP gene, with one being classified as pathogenic, suggesting these mutations are likely responsible for the patient's hearing loss, but further research is needed to clarify their effects fully.
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Cogan syndrome (CS) is a rare chronic inflammatory disease characterized by ocular and inner ear inflammation. Well-known ocular manifestations include non-syphilitic interstitial keratitis (IK); however, some cases are not associated with IK. Inner ear symptoms include sensorineural hearing loss, rotatory vertigo, and tinnitus, which can become irreversible without timely treatment.

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Article Synopsis
  • The study investigates the significance of bilateral high signal intensity (SI) in the endolymphatic duct (ED) observed in MRI scans of patients with various otological disorders, particularly focusing on its correlation with clinical symptoms.
  • A retrospective analysis of MRI findings from 2,450 ears belonging to 1,225 patients reveals that high SIs in the ED are linked to lower occurrences of endolymphatic hydrops (EH) and different audiometric thresholds.
  • The results suggest that high SI in the ED may indicate underlying pathophysiological processes related to sensorineural hearing loss and vestibular issues, rather than being associated with the presence of EH.
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SLC26A4 encodes pendrin, a crucial anion exchanger essential for maintaining hearing function. Mutations in SLC26A4, including the prevalent c.919-2 A > G splice-site mutation among East Asian individuals, can disrupt inner ear electrolyte balance, leading to syndromic and non-syndromic hearing loss, such as Pendred syndrome and DFNB4.

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Interaction between the TBC1D24 TLDc domain and the KIBRA C2 domain is disrupted by two epilepsy-associated TBC1D24 missense variants.

J Biol Chem

September 2024

Laboratory of Molecular Genetics, National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Maryland, USA. Electronic address:

Article Synopsis
  • Mutations in the TBC1D24 gene are linked to various conditions like deafness, epilepsy, and DOORS syndrome, but how these mutations lead to different health issues is still unclear.
  • Researchers conducted a study to identify new protein partners of TBC1D24 and discovered that it interacts with KIBRA, a scaffold protein involved in cognitive functions and the Hippo signaling pathway.
  • Specific mutations in the TLDc domain of TBC1D24 can disrupt its interaction with KIBRA, revealing a potential link between TBC1D24 and epilepsy, suggesting that this interaction is crucial for reducing epilepsy risk.
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Article Synopsis
  • - Cochlear implantation is highly effective for patients with severe to profound hearing loss, as demonstrated in the case of a four-year-old child with congenital hearing loss and a family history of the condition.
  • - Although the child had no significant issues related to his paranasal sinuses, radiological imaging revealed incidental findings of silent sinus syndrome (SSS) in the left maxillary sinus.
  • - After undergoing bilateral cochlear implantation, the patient experienced complications including left-sided ophthalmoplegia and swelling, but improved quickly with antibiotics and was discharged in nearly normal condition by the fifth day post-surgery.
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Otolith function in Usher type II syndrome.

Acta Otolaryngol

September 2024

Otorhinolaringology Department, Coimbra Local Health Unit, EPE, Coimbra, Portugal.

Background: Usher's syndrome type II (USH2) is a rare genetic disorder encompassing hearing loss, vision impairment, and apparent intact vestibular function. Recent research suggests a potential involvement of the otolith vestibular receptors in USH2.

Aims/objectives: Evaluate otolith dynamic function in USH2.

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Article Synopsis
  • Primary central nervous system vasculitis (PCNSV) is a rare condition affecting the brain and spinal cord, presenting with varied symptoms and lacking specific biomarkers.
  • A case of a 40-year-old Japanese male initially misdiagnosed with multiple sclerosis (MS) later revealed PCNSV after experiencing unusual symptoms and spontaneous resolution of some lesions.
  • The diagnosis was confirmed through a biopsy showing vasculitis, and after treatment with methylprednisolone and oral prednisolone, the patient showed no relapses or new MRI lesions, highlighting the importance of considering PCNSV in similar cases.
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