Type : Phenotype or locus, molecular basis unknown;
Description : For a general description and a discussion of genetic heterogeneity of USH1, see 276900.
Usher syndrome type I an autosomal recessive disorder characterized by profound congenital
hearing impairment with unintelligible speech, early retinitis pigmentosa, and constant
vestibular dysfunction (summary by Chaib et al., 1997).;