Alternative titles and symbols : Deafness, X-linked 6, progressive; Deafness, nonsyndromic sensorineural progressive 6; DFN6;
Description : X-linked deafness-4 is a nonsyndromic form of progressive hearing loss with postlingual
onset. Affected males show earlier onset of hearing loss than affected females (summary
by del Castillo et al., 1996).;
Inheritance : X-linked dominant;
Molecular basis : Caused by mutation in the X-linked small muscle protein gene (SMPX, 300226.0001);