Supernus Provides Update on SPN-810 Phase III Clinical Trials
The Company is developing SPN-810 as a novel treatment for impulsive aggression (IA) in patients aged 6 to 12 years who have attention deficit hyperactivity disorder (ADHD). SPN-810 is being tested in two Phase III clinical trials at total daily doses of 18 mg and 36 mg against placebo. The two trials are being conducted using an agreed-upon novel scale to measure IA that was developed by the Company with the
The purpose of the interim analysis is to assess the doses being tested and allow for optimization of the trial design of both trials. The interim analysis was conducted by an independent third party statistician with clear and strict guidelines that do not compromise the quality or blinding of the trials and that were predefined under the SPA prior to the initiation of the trials. The benefit of structuring the first trial with an interim analysis is to enable the Company to implement certain actions that would maximize the probability of success. These actions include, but are not limited to: terminating the trials due to an expectation of futility; dropping one of the dose arms; increasing the number of patients to be recruited; or simply continuing the trials unchanged.
The interim analysis has been completed and both trials will continue through to completion. Based on the predefined criteria for dropping a dose arm, the lower dose of 18 mg will be eliminated. Moving forward, all patients will be randomized to either the 36 mg dose arm or placebo until the predetermined total number of patients are enrolled without changing the size of the trials. The Company believes that this will maximize the probability of reaching a statistically significant outcome for the 36 mg dose. Implementation of these changes will start immediately. We continue to expect enrollment through mid-2018.
Current enrollment is at approximately 64% for the first trial and 56% for the second trial. Enrollment in the open label extension study continues to be very encouraging at a high level of 90%.
"We are pleased to have included an interim analysis in the design of the first trial that allows us to implement predefined measures to optimize the trials and better position them for success. We are committed to bringing this novel treatment to patients who currently have no proven and approved options," said
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This press release includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These statements do not convey historical information, but relate to predicted or potential future events that are based upon management's current expectations. These statements are subject to risks and uncertainties that could cause actual results to differ materially from those expressed or implied by such statements. In addition to the factors mentioned in this press release, such risks and uncertainties include, but are not limited to, the Company's ability to successfully complete the development of its product
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