Catalyst Pharma Says CPP-109 Did Not Meet Primary Endpoint

Catalyst Pharmaceutical Partners, Inc.

today announced top-line results from its U.S. Phase II(b) clinical trial evaluating the use of CPP-109 (vigabatrin) to treat cocaine addiction. The data from the trial showed that CPP-109 did not meet the primary endpoint -- that a significantly larger proportion of CPP-109-treated subjects than placebo-treated subjects were cocaine-free during the last two weeks of the treatment period (Weeks 8 and 9). The data also showed that the two key secondary endpoints, a significantly larger increase in cocaine negative urines and a significant decrease in the weekly fraction of use days in medication-treated subjects during weeks 3-9, also were not met. The clinical trial did not reveal any unexpected "serious" adverse events. Catalyst expects the remaining protocol-specified analyses for other secondary and exploratory clinical endpoints and safety data to be completed during the first half of next year, after all the follow-up clinical data have been received to be able to fully unblind the trial data.