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The many faces of sensorineural hearing loss: one founder and two novel mutations affecting one family of mixed Jewish ancestry.

Dramatic progress has been made in our understanding of the highly heterogeneous molecular bases of sensorineural hearing loss (SNHL), demonstrating the involvement of all known forms of inheritance and a plethora of genes tangled in various molecular pathways. This progress permits the provision of prognostic information and genetic counseling for affected families, which might, nevertheless, be exceedingly challenging. Here, we describe an intricate genetic investigation that included Sanger-type sequencing, BeadArray technology, and next-generation sequencing to resolve a complex case involving one family presenting syndromic and nonsyndromic SNHL phenotypes in two consecutive generations. We demonstrate and conclude that such an effort can be completed during pregnancy.