Not bullish for ARWR—FDA still has a clinical hold on the 2mg/kg and 4mg/kg doses, evidently: http://finance.yahoo.com/news/arrowhead-cleared-proceed-multiple-dose-113000077.html The study is planned to enroll up to 12 patients who will be randomized at a ratio of 2:1 with 8 patients receiving 1 mg/kg of ARC-520 and 4 patients receiving placebo.