Ustekinumab Phase 3 data show long-term improvement of chronic plaque...(rate to Severe Plaque-type Psoriasis Fol...),Health

Date:2/2/2008

rate to Severe Plaque-type Psoriasis Followed by Long-term Extension (PHOENIX 1) study examined the proportion of patients achieving at least a 75 percent improvement from baseline at week 12. Investigators reported findings from PHOENIX 1 that showed at week 12, after two doses, 67 percent of patients receiving 45 mg ustekinumab and 66 percent of patients receiving 90 mg ustekinumab achieved PASI 75 compared with 3 percent of patients receiving placebo (P<0.001 for each comparison versus placebo). Furthermore, 42 percent of patients in the 45 mg ustekinumab dosing group and 37 percent of patients in the 90 mg ustekinumab dosing group achieved PASI 90, or nearly complete clearance of psoriasis, compared with 2 percent of patients receiving placebo (P<0.001). Primary endpoint study findings from PHOENIX 1 were consistent with the week 12 primary endpoint findings reported at the World Congress of Dermatology in October 2007 from another study, the Phase 3, Multicenter, Randomized, Double-blind, Placebo-controlled Trial Evaluating the Efficacy and Safety of CNTO 1275 in the Treatment of Subjects with Moderate to Severe Plaque-type Psoriasis Followed by Long-term Extension 2 (PHOENIX 2).

In the PHOENIX 1 study, subjects who received 45 mg or 90 mg of ustekinumab and consistently achieved a 75 percent improvement from baseline were randomized at week 40 to either continue treatment or switch to placebo, with levels of response to maintenance therapy measured at week 52. Of those patients who continued treatment with ustekinumab 45 mg and ustekinumab 90 mg dosing, 87 percent and 91 percent, respectively, had a sustained PASI 75 response compared with 64 percent and 62 percent of patients switched to placebo (P≤0.001 for 45 mg comparison; P<0.001 for 90 mg comparison). Also at week 40, 66 percent and 73 percent of patients achieved PASI 90 after receiving either 45 mg ustekinumab or 90 mg ustekinumab, respectively, and response rates remained stable thr
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Contact: Brian Kenney BKenney1@cntus.jnj.com 215-325-2107 Centocor, Inc. Source:Eurekalert

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