Shares of Redwood City, Calif.-based Rezolute Inc., and Korean parent company Handok Inc., rose May 22 on positive results of a phase II proof-of-concept study for its investigative oral diabetic macular edema (DME) drug, RZ-402. RZ-402 is an oral small-molecule plasma kallikrein inhibitor designed to block vascular leakage and inflammation for treating chronic DME.