Unexpected heterogeneity due to recessive and de novo dominant mutations of GJB2 in an Iranian family with nonsyndromic hearing loss: implication for genetic counseling.

Abstract excerpt

Mutations in the GJB2 gene are the most common cause of nonsyndromic autosomal recessive sensorineural hearing loss (HL). A few mutations in GJB2 have also been reported to cause dominant nonsyndromic HL. Here we report a large inbred family including two individuals with nonsyndromic sensorineural hearing loss. A dominant GJB2 mutation, c.551G>A (p.R184Q), was detected in the proband, yet his parents were...

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