There is a video out of a guy who had this done about a year ago. It was on the news (forget which one) and the guy is hopeful. He feels there has been improvement. I think I may have even posted the video on another thread. My husband, who has not wanted to do any studies because he hates having the MMSE which reminds him of what he has lost, has said he would consider it but only if he got the gene -not the placebo.
I saw something the other night on TV about the tips of the chromozone gets damage as one ages. In mice they have been able to repair the damage and reverse the aging process. The said that the brain regrew in the older mouse. Sound like the fountain of youth. If this works in people then you will have more people living longer and in no time the country will go broke not being able to keep up the cost of Medicare and Medicaid with the increase in longivity.
"Harvard Scientists Reverse the Aging Process in Mice – Total Bullsh*t" http://singularityhub.com/2010/11/30/harvard-scientists-reverse-the-aging-process-in-mice-total-bullsht/