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Autosomal Dominant Deafness 56

Autosomal Dominant Non-Syndromic Sensorineural Deafness Type DFNA


Presentation

  • Answer the survey x Homepage Rare diseases Search Search for a rare disease Autosomal dominant non-syndromic sensorineural deafness type DFNA The documents contained in this web site are presented for information purposes only.[orpha.net]
  • The information in this edition will be presented in the same user-friendly format, heavily illustrated in color plates, tables, charts, and decision-making guidelines.[books.google.com]
  • It is for the first time that the mutations identified in MYO7A in the present study are being implicated in DFNA11 in a Chinese population.[miami.pure.elsevier.com]
  • In each of these cases, the mother presented as an adult (mean age 31 years) while all the offspring presented in childhood (mean age 7 years) (5).[path.upmc.edu]
  • Fifty-three loci have presently been reported. The 17 deafness forms for which the genes have been identified are presented.[ommbid.mhmedical.com]
Heart Disease
  • ., Huntington disease) whereas other genes merely make an individual more susceptible to developing a disease (e.g, heart disease, late-onset Alzheimer disease). (3) An individual may be a carrier of a genetic disorder, that is, have one copy of a gene[www2.loras.edu]
Heart Failure
  • This disease causes excessive iron deposits in the liver, pancreatic islets, heart, and/or joints, and can result in liver disease, diabetes mellitus, heart failure, and arthropathy.[www2.loras.edu]
Personality Change
  • Huntington disease is a neurodegenerative disorder, with adult-onset symptoms of worsening gait, constant uncontrollable movement, and personality changes. Death usually comes ten to fifteen years after the initial diagnosis.[www2.loras.edu]

Workup

  • Clinical Workup/Diagnosis Initial workup includes a full physical examination and audiometry (See “Audiometry” section on menu for details on diagnosis.)[cochlea.eu]

Treatment

  • This approach will enable the practitioner to make the most accurate diagnosis and choose the most effective treatment option.[books.google.com]
  • The material is in no way intended to replace professional medical care by a qualified specialist and should not be used as a basis for diagnosis or treatment.[orpha.net]
  • Treatments Treatment is tailored to the specific pathology of hearing loss and includes pharmacological, surgical or hearing amplification treatments.[cochlea.eu]
  • Stay at the forefront of your field with updated treatment methods throughout, as well as an increased focus on patients with skin of color.[books.google.de]

Prognosis

  • This series presents the causes and prognosis of this audiometric pattern.[cambridge.org]
  • Okada M, Iwasaki S, et al: The effect of initial treatment on hearing prognosis in idiopathic sudden sensorineural hearing loss: a nationwide survey in Japan. Acta Otolaryngol Mar 31:1-4, 2017.[mita.iuhw.ac.jp]
  • This data indicates that mutations in CLN3 can cause non-syndromic retinal degeneration, which implies a more favorable prognosis for patients carrying these mutations in CLN3.[journalretinavitreous.biomedcentral.com]
  • The effect of initial treatment on hearing prognosis in idiopathic sudden sensorineural hearing loss: a nationwide survey in Japan.[soar-rd.shinshu-u.ac.jp]
  • ., CT, MRI, and consultation with specialists) and to inform prognosis and treatment recommendations. Figure 2.[ncbi.nlm.nih.gov]

Etiology

  • It is due to seeding from the bloodstream and is most commonly viral in etiology.[ajnr.org]
  • Of note, there’s some debate about the molecular etiology of nonsyndromic sensorineural hearing loss in subjects with only one detectable GJB2 mutation. A minority of such cases is explained by digenic etiology of GJB2 with GJB3 or GJB6.[bredagenetics.com]
  • .  Classified by either etiology, manifestation and impact, or severityA. ETIOLOGY For characterizing the cause of the hearing loss: a. Genetic or environmental cause b. Age of onset c.[slideshare.net]
  • Prevention of Secondary Complications Regardless of its etiology, uncorrected hearing loss has consistent sequelae.[ncbi.nlm.nih.gov]
  • A Comprehensive Study on the Etiology of Patients Receiving Cochlear Implantation With Special Emphasis on Genetic Epidemiology. Otol Neurotol,37(2):e126-34 2016(Feb.) Author:Miyagawa M, Nishio SY, Usami S.[soar-rd.shinshu-u.ac.jp]

Epidemiology

  • Genetic epidemiological studies of early-onset deafness in the U.S. school-age population. Am J Med Genet. 1993 6 15; 46(5):486–491. PMID: 8322805 . 3. Lenz DR, Avraham KB. Hereditary hearing loss: from human mutation to mechanism.[e-ceo.org]
  • For example, in one epidemiologic study, there was a subset of eight cases in which both a mother and one of her offspring had moyamoya.[path.upmc.edu]
  • Spinocerebellar degenerations in Japan: anationwide epidemiological and clinicalstudy.[docslide.com.br]
  • From the molecular data presently available, three main epidemiologic results emerge: (a) Mutations in the gene encoding a gap junction protein, connexin 26, account for about half of the cases of prelingual isolated deafness in Caucasian populations;[ommbid.mhmedical.com]
  • Relevant External Links for TNC Genetic Association Database (GAD) TNC Human Genome Epidemiology (HuGE) Navigator TNC Atlas of Genetics and Cytogenetics in Oncology and Haematology: TNC No data available for Genatlas for TNC Gene Human tenascin: primary[genecards.org]
Sex distribution
Age distribution

Pathophysiology

  • Each form is introduced by a brief history of how the gene was discovered, followed by the description of its clinical features and the established or putative role of the encoded protein, as well as the current hypotheses concerning the associated pathophysiological[ommbid.mhmedical.com]
  • […] recessive; resulting from either two GJB6 deletions (rare) or one GJB6 deletion and one GJB2 variant on opposite chromosome Mitochondrial DNA – dominant maternal inheritance Hearing loss in some individuals with 1555A G variant is induced by aminoglycosides Pathophysiology[arupconsult.com]

Prevention

  • Journal of Neuroscience 26 (43), 10939-10948 , 2006 254 2006 Autosomal-dominant Alzheimer's disease: a review and proposal for the prevention of Alzheimer's disease RJ Bateman, PS Aisen, B De Strooper, NC Fox, CA Lemere, JM Ringman, ...[scholar.google.co.uk]
  • See the video Genetic Screening: The Ultimate Preventive Medicine (KCTS/Seattle, 1980).[www2.loras.edu]
  • […] as early as possible to prevent irreversible sequelae.[ncbi.nlm.nih.gov]
  • PREVENTION OF HEARING IMPAIRMENT An ideal therapy has not yet arrived to correct hearing loss through replacement or regeneration of inner and outer hair cells.[nature.com]
  • Such treatment-to be ofany use-should be initiated shortly afterexposure to mercury to prevent an accumu-lation and irreversible damage within theCNS.Pure coincidence of a rare disease with anextraordinary preceding event cannot beruled out, but the unusual[docslide.com.br]

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