|
1
|
Cornwall HL, Lam CM, Chaudhry D, Muzaffar J, Monksfield P, Bance ML. Outcomes of cochlear implantation in Usher syndrome: a systematic review. Eur Arch Otorhinolaryngol 2024; 281:1115-1129. [PMID: 37930386 PMCID: PMC10858075 DOI: 10.1007/s00405-023-08304-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Accepted: 10/17/2023] [Indexed: 11/07/2023]
Abstract
PURPOSE This study is a systematic review of the literature which seeks to evaluate auditory and quality of life (QOL) outcomes of cochlear implantation in patients with Usher syndrome. METHODS Systematic review of studies indexed in Medline via PubMed, Ovid EMBASE, Web of Science, CENTRAL and clinicaltrials.gov was performed up to March 9th 2022, conducted in accordance with the PRISMA statement. Patient demographics, comorbidity, details of cochlear implantation, auditory, and QOL outcomes were extracted and summarized. RESULTS 33 studies reported over 217 cochlear implants in 187 patients with Usher syndrome, comprising subtypes 1 (56 patients), 2 (9 patients), 3 (23 patients), and not specified (99 patients). Auditory outcomes included improved sound detection, speech perception, and speech intelligibility. QOL outcomes were reported for 75 patients, with benefit reported in the majority. CONCLUSIONS Many patients with Usher syndrome develop improved auditory outcomes after cochlear implantation with early implantation being an important factor.
Collapse
Affiliation(s)
| | - Chon Meng Lam
- Cardiff and Vale University Health Board, Cardiff, UK
| | - Daoud Chaudhry
- College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Jameel Muzaffar
- Department of Clinical Neurosciences, University of Cambridge, Level 3, A BlockCambridge Biomedical Campus, Box 165, Cambridge, CB2 0QQ, UK
- Department of Otolaryngology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - Peter Monksfield
- Department of Otolaryngology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - Manohar L Bance
- Department of Clinical Neurosciences, University of Cambridge, Level 3, A BlockCambridge Biomedical Campus, Box 165, Cambridge, CB2 0QQ, UK.
- Department of Otolaryngology, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK.
| |
Collapse
|
|
2
|
Usher syndrome IIIA: a review of the disorder and preclinical research advances in therapeutic approaches. Hum Genet 2022; 141:759-783. [PMID: 35320418 DOI: 10.1007/s00439-022-02446-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 03/03/2022] [Indexed: 12/27/2022]
Abstract
Usher syndrome (USH) is an autosomal recessive disorder characterized by sensorineural hearing loss, progressive pigmentary retinopathy, and vestibular dysfunction. The degree and onset of hearing loss vary among subtypes I, II, and III, while blindness often occurs in the second to fourth decades of life. Usher type III (USH3), characterized by postlingual progressive sensorineural hearing loss, varying levels of vestibular dysfunction, and varying degrees of visual impairment, typically manifests in the first to second decades of life. While USH3 is rare, it is highly prevalent in certain populations. RP61, USH3, and USH3A symbolize the same disorder, with the latter symbol used more frequently in recent literature. This review focuses on the clinical features, epidemiology, molecular genetics, treatment, and research advances for sensory deficits in USH3A.
Collapse
|
|
3
|
Davies C, Bergman J, Misztal C, Ramchandran R, Mittal J, Bulut E, Shah V, Mittal R, Eshraghi AA. The Outcomes of Cochlear Implantation in Usher Syndrome: A Systematic Review. J Clin Med 2021; 10:jcm10132915. [PMID: 34209904 PMCID: PMC8267700 DOI: 10.3390/jcm10132915] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 06/22/2021] [Accepted: 06/23/2021] [Indexed: 12/14/2022] Open
Abstract
Objective: To systematically appraise the implementation of cochlear implantation (CI) in Usher Syndrome (USH) Types 1, 2, and 3 patients, and analyze who would benefit from CI. Data Sources: A comprehensive search of PubMed, Embase, CINAHL, and Cochrane Library electronic databases from inception through June 2020 was performed. There were no language restrictions. Study Selection: The PRISMA strategy was followed. Included studies discuss USH patients who underwent CI regardless of age, nationality, or clinical subtype. All included studies report post-implantation functional, cognitive, or quality of life outcomes. Only reviews were excluded. Results: Fifteen studies met the inclusion criteria. USH patients experienced improvements in PTA and speech perception and expression outcomes after CI, as well as improvements in phonological memory and quality of life measures. Overall, patients implanted at younger ages outperformed older patients in audiological testing. Similarly, patients with prolonged auditory deprivation had relatively poor performance outcomes in sentence recognition and speech detection following CI. Conclusions: Most USH patients benefit from CI. USH patients who undergo CI at younger ages generally achieve better hearing, speech, and cognitive outcomes. CI at older ages can still prove beneficial if appropriate auditory amplification is started at the right time. Further research is warranted to fill the gap in understanding regarding the gene mutations underlying the pathophysiology of USH that have favorable CI outcomes as well as the optimal time to perform CI.
Collapse
Affiliation(s)
- Camron Davies
- Cochlear Implant and Hearing Research Laboratory, Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (C.D.); (J.B.); (C.M.); (R.R.); (J.M.); (E.B.); (V.S.); (R.M.)
| | - Jenna Bergman
- Cochlear Implant and Hearing Research Laboratory, Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (C.D.); (J.B.); (C.M.); (R.R.); (J.M.); (E.B.); (V.S.); (R.M.)
| | - Carly Misztal
- Cochlear Implant and Hearing Research Laboratory, Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (C.D.); (J.B.); (C.M.); (R.R.); (J.M.); (E.B.); (V.S.); (R.M.)
| | - Renuka Ramchandran
- Cochlear Implant and Hearing Research Laboratory, Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (C.D.); (J.B.); (C.M.); (R.R.); (J.M.); (E.B.); (V.S.); (R.M.)
| | - Jeenu Mittal
- Cochlear Implant and Hearing Research Laboratory, Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (C.D.); (J.B.); (C.M.); (R.R.); (J.M.); (E.B.); (V.S.); (R.M.)
| | - Erdogan Bulut
- Cochlear Implant and Hearing Research Laboratory, Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (C.D.); (J.B.); (C.M.); (R.R.); (J.M.); (E.B.); (V.S.); (R.M.)
| | - Viraj Shah
- Cochlear Implant and Hearing Research Laboratory, Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (C.D.); (J.B.); (C.M.); (R.R.); (J.M.); (E.B.); (V.S.); (R.M.)
| | - Rahul Mittal
- Cochlear Implant and Hearing Research Laboratory, Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (C.D.); (J.B.); (C.M.); (R.R.); (J.M.); (E.B.); (V.S.); (R.M.)
| | - Adrien A. Eshraghi
- Cochlear Implant and Hearing Research Laboratory, Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (C.D.); (J.B.); (C.M.); (R.R.); (J.M.); (E.B.); (V.S.); (R.M.)
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Department of Biomedical Engineering, University of Miami, Coral Gables, FL 33146, USA
- Department of Pediatrics, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- Correspondence:
| |
Collapse
|