Already hammered by poor trial data, Genta announced today that the FDA had formally rejected its leukemia therapy Genasense. Genta's stock dropped more than 20 percent to 54 cents a share. Its stock had already been hurt by the news several days ago that the therapy had failed a trial. "We are keenly disappointed by this decision," Raymond Warrell, Genta's chief executive, said in a statement. "We believe that Genasense has amply demonstrated its efficacy and safety in patients with relapsed and refractory CLL in a carefully designed and executed randomized clinical trial." Release | Report