As far as I can tell they've just started actively recruiting participants for the trial. The page here lists a closure date of 7/30/14, but I'm not sure if that means the trial is expected to conclude by then or if that's when they stop accepting applicants. Also, a few of the videos on the GDNF trials I've watched have clearly featured Renishaw CED equipment... the same as what AMBS hopes to leverage based on the recent LOI...