Auditory neuropathy in pediatric capos syndrome: Favorable outcome with cochlear implant
DOI:
https://doi.org/10.34631/sporl.737Keywords:
CAPOS syndrome, auditory neuropathy, cochlear implantAbstract
CAPOS syndrome (cerebellar ataxia, areflexia, pes cavus, optic atrophy, and sensorineural hearing loss) is a rare neurological disease, associated with the c.2452G>A mutation in the ATP1A3 gene. We herein report on the phenotypic and genotypic findings of 3 members of an affected Spanish family and the experience of cochlear implant treatment in the youngest of them, a boy who had experienced sensorineural hearing loss with a pattern of auditory neuropathy for 5 years following an initial encephalitic episode when aged 3 years old with very poor outcome using hearing aids. A cochlear implant trial was performed at age 8 years in order to ameliorate his progressive deterioration in audioverbal skills with very poor discrimination. Results evaluation after an 18 months period using CI showed > 80% discrimination in open contexts.
References
Demos MK, van Karnebeek CD, Ross CJ, Adam S, et al. A novel recurrent mutation in ATP1A3 causes CAPOS syndrome. Orphanet J
Rare Dis. 2014 Jan 28;9:15. doi: 10.1186/1750-1172-9-15.
Rodriguez A, Prochazkova M, Santos S, Cabezas O, et al. Early Diagnosis of CAPOS Syndrome Before Acute-Onset Ataxia-Review of
the Literature and a New Family. Pediatr Neurol. 2017 Jun;71:60-64. doi: 10.1016/j.pediatrneurol.2017.01.009.
Paquay S, Wiame E, Deggouj N, Boschi A, et al. Childhood hearing loss is a key feature of CAPOS syndrome: A case report. Int
J Pediatr Otorhinolaryngol. 2018 Jan;104:191-194. doi: 10.1016/j.ijporl.2017.11.022.
Tranebjærg L, Strenzke N, Lindholm S, Rendtorff ND, et al. The CAPOS mutation in ATP1A3 alters Na/K-ATPase function and results
in auditory neuropathy which has implications for management. Hum Genet. 2018 Feb;137(2):111-127. doi: 10.1007/s00439-017-1862-z.
Feirn R, Sutton G, Parker G, Sirimanna T, et al. Guidelines for the Assessment and Management of Auditory Neuropathy Spectrum Disorder in Young Infants. NHSP ANSD guidelines v 2.2. 2013.
Allum J., Greisiger R., Straubhaar S. Carpenter M. Auditory perception and speech identification in children with cochlear implants
tested with the EARS Protocol. Br J Audiol. 2000 Oct;34(5):293-303. doi: 10.3109/03005364000000141.
Cárdenas MR, Marrero V. Test de Bisílabas. Cuaderno de logoaudiometría. Madrid: UNED; 1994.
Erber NP. Auditory Training. Washington DC: Alexander Graham Bell Association for the Deaf; 1982. 197 p.
Davis H, Silverman SR. Hearing and deafness. 4th rev. ed. New York: Holt, Rinehart & Winston; 1978.
Mendoza E, Carballo G, Muñoz J, Fresneda MD. CEG: Test de Comprensión de Estructuras Gramaticales. Madrid: Ed TEA; 2005.
Brookes JT, Kanis AB, Tan LY, Tranebjaerg L, et al. Cochlear implantation in deafness-dystonia-optic neuronopathy (DDON)
syndrome. Int J Pediatr Otorhinolaryngol. 2008 Jan;72(1):121-6. doi: 10.1016/j.ijporl.2007.08.019.
Miyamoto RT, Kirk KI, Renshaw J, Hussain D. Cochlear implantation in auditory neuropathy. Laryngoscope. 1999 Feb;109(2 Pt 1):181-5.
doi: 10.1097/00005537-199902000-00002.
Starr A, Picton TW, Sininger Y, Hood LJ, et al. Auditory neuropathy. Brain. 1996 Jun;119 ( Pt 3):741-53. doi: 10.1093/brain/119.3.741.
Santarelli R, Rossi R, Scimemi P, Cama E, et al. OPA1-related auditory neuropathy: site of lesion and outcome of cochlear implantation. Brain. 2015 Mar;138(Pt 3):563-76. doi: 10.1093/brain/awu378.
Vandana VP, Bindu PS, Nagappa M, Sinha S, et al. Audiological findings in Infantile Refsum disease. Int J Pediatr Otorhinolaryngol.
Aug;79(8):1366-9. doi: 10.1016/j.ijporl.2015.05.023.
McLean WJ, Smith KA, Glowatzki E, Pyott SJ. Distribution of the Na,K-ATPase alpha subunit in the rat spiral ganglion and organ of corti. J Assoc Res Otolaryngol. 2009 Mar;10(1):37-49. doi: 10.1007/s10162-008-0152-9.
Kaneko M, Desai BS, Cook B. Ionic leakage underlies a gain-offunction effect of dominant disease mutations affecting diverse P-type
ATPases. Nat Genet. 2014 Feb;46(2):144-51. doi: 10.1038/ng.2850.
Norrix LW, Velenovsky DS. Auditory neuropathy spectrum disorder: a review. J Speech Lang Hear Res. 2014 Aug;57(4):1564-76.
doi: 10.1044/2014_JSLHR-H-13-0213.
Rance, G. Auditory neuropathy/dys-synchrony and its perceptual consequences. Trends Amplif. 2005;9(1):1-43. doi: 10.1177/108471380500900102.
Breneman AI, Gifford RH, Dejong MD. Cochlear implantation in children with auditory neuropathy spectrum disorder: long-term
outcomes. J Am Acad Audiol. 2012 Jan;23(1):5-17. doi: 10.3766/jaaa.23.1.2.