what it says on the tin.
This seems to have taken forever due to :
i) More regulatory bodies and regulations than you've had hot dinners.
ii) Everything in PD seems to take forever !!
iii) Oxford Biomedica was, until recently, run by British scientists, the worst combination if you are looking for a team to drive a product to market.
At least (iii) has been addressed as a more commercially focussed team appears to be in charge now.
Not much can be done about (i) and (ii) unfortunately.
Still, just as gene therapy was looking like smoke and mirrors for PD, (Ceregene, Neurologix et al), perhaps this one will be the difference.