That's an interesting question and one I sadly don't know...
User WickerBag, in the Real Info for Authors subreddit,
That's an interesting question and one I sadly don't know the answer too. Maybe have a look at gene therapy and its effects…
Long-Term Gene Therapy Causes Transgene-Specific Changes in the Morphology of Regenerating Retinal Ganglion Cells
Overview of attention for article published in PLOS ONE, February 2012