[Nonsyndromic sensorineural deafness--analysis of etiology in relatives]. / Izolowanie wady sluchu -- badania przyczyn w rodzinach.

We present the results of complex clinical examination of children affected with sensorineural hearing loss. The siblings (minimum two) were born from unaffected parents and came from twelve families. Molecular studies confirmed genetic background of hearing loss in 6 families and enabled identification of GJB2 mutations in investigated probants.