Array BioPharma Announces Top-Line Results Print E-mail
By Staff and Wire Reports   
Friday, 04 September 2009 03:07
After the market closed on Thursday, Array BioPharma Inc. (Nasdaq: ARRY) announced its preliminary analysis of results from a study examining ARRY-162, a small molecule MEK inhibitor, in a 12-week Phase 2 clinical trial with 201 patients. The patients had active rheumatoid arthritis (RA) that was not completely responsive to methotrexate. This study included a placebo group and three different dose groups of ARRY-162, all on a stable background of methotrexate. None of the treatment groups demonstrated a statistically significant ACR20 response rate compared to the placebo group at 12 weeks (p=0.459), therefore the study did not meet the primary endpoint.

Overall, the placebo response rates in this study were higher than expected for this patient population and showed regional differences, with patients in South America (99 patients) having substantially higher placebo response rates than those in Eastern Europe (101 patients). In Eastern Europe when patients in the three active treatment arms were combined, there was a trend towards efficacy, as measured by DAS28-4(CRP) (p=0.067), “Good” EULAR response (p=0.105) and ACR20 response rate (p=0.115). Array is conducting a full analysis of safety, efficacy and pharmacokinetic data from this study and expects to present complete results at a medical conference in 2010.

“This is the first clinical trial evaluating the modulation of the MEK pathway for the treatment of chronic inflammatory disease,” said Kevin Koch, Ph.D., President and Chief Scientific Officer. “While we are disappointed in the overall efficacy outcome, we were pleased with the confirmation of the favorable safety profile and are continuing to evaluate the regional results. Previously we announced our strategy to rapidly advance ARRY-162 for the treatment of cancer patients. We initiated a Phase 1 oncology trial last month and patient dosing is underway.”

Array will host a conference call on Friday, September 4, 2009, at 9:00 a.m. ET to discuss these results (see conference call details below). Array has also posted additional slides discussing these results on the Investor Relations section of Array’s website at www.arraybiopharma.com.




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