Would it ever be possible to repair the genes of someone who has a genetic defect, but is already an adult?

[Elite Engineer]

It pains me to see people suffering from debilitating genetic diseases, where (if their lucky) the only treatment is to mildly reduce the symptoms. 

Maybe not now or even in 20 years, but is there any possibility that an individuals genetic errors could be fixed? I really can't think of any mechanism

that could do this, even in a far-reaching theory.

 

Your thoughts?

~ee

[Uncommon Ancestor]

I think that studies on viral genic therapy may be sort of what you are looking for.  It seems to have worked well in dogs so far. Check this: https://search.proquest.com/openview/0d25a5a854c1806b64f11803c52f11bf/1?pq-origsite=gscholar&cbl=33429 .