The phase 2 randomized, double-masked, vehicle-controlled dose-ranging trial (81 TID, 82 BID, 84 vehicle, including Sjogren dry eye) missed its primary endpoint: change in Schirmer I at week 4 did not differ from vehicle (TID difference 0.93 mm, 95% CI -1.47 to 3.32, P=0.078; BID 2.31 mm, 95% CI -0.08 to 4.70, P=0.066, 1-sided alpha 0.025). Symptom scores (SANDE) fell significantly with TID only, and the authors conclude that larger studies are warranted.