The study of GJB2 dominant mutaion distribution in Chinese deafness patient and the analysis of phenotype / 临床耳鼻咽喉头颈外科杂志

OBJECTIVE@#Mutations in the GJB2 are the most common cause of nonsyndromic autosomal recessive sensorineural hearing loss. A few mutations in GJB2 have also been reported to cause dominant nonsyndromic or syndromic hearing loss. This study analysised the GJB2 dominant mutation in Chinese deafness.@*METHOD@#1641 patients as GJB2-related hearing loss were enrolled, summarized the type of dominant mutaion, analyzed the hearing level and other systerm lesion.@*RESULT@#Nine probands with severe-profound hearing loss were diagnosed as GJB2 domiant mutation (R75W,G130V, R143Q,p. R184Q). And one patient with R75W mutation was diagosed as hearing loss and palmoplantar keratoderma.@*CONCLUSION@#GJB2 dominant mutation can cause severe-to-profound bilateral sensorineural hearing impairment and not common with syndromic hearing loss in Chinese deafness.

Assessment of the curative effective of cochlear implantation in childer with GJB2-associated NSSNHL / 临床耳鼻咽喉头颈外科杂志

OBJECTIVE@#To analyze the curative effect of CI in children with GJB2-associated NSSNHL.@*METHOD@#The evaluations of curative effect with CI include auditory threshold, IT-MAIS/MAIS, CAP, SIR. MESP. The outcomes of 40 cases with GJB2-associated NSSNHI, were compared 80 patients with negative results of screening of gene mutation (control group).@*RESULT@#In comparison with control group the auditory threshold in children with GJB2-associated NSSNIL is better, however had no significant difference in other tests (P > 0.05).@*CONCLUSION@#CI could he performed on children with GJB2-associated NSSNHL. Postoperative outcomes of hearing and speech were satisfied.