Wait until they have kids. The deafness gene will be passed along. Soon enough we'll be like the cars with the hardware without the software or the locked features.
>OTOF-related deafness is inherited in an autosomal recessive manner. If both parents are known to be carriers, each sib of an individual with OTOF-related deafness has at conception a 25% chance of being deaf, a 50% chance of having normal hearing and being a carrier, and a 25% chance of having normal hearing and not being a carrier.
Another alternative is selective abortions after early genetic testing (though ethic and morale concerns here are huge).
/s