Minerva Neurosciences (NERV) Reports Six-Month Data from Phase IIb Trial of MIN-10 in Schizophrenia
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Minerva Neurosciences, Inc. (NASDAQ: NERV), a clinical-stage biopharmaceutical company focused on the development of therapies to treat central nervous system (CNS) disorders, today announced data from the 24-week open-label extension of its 12-week, randomized, double-blind, placebo-controlled Phase IIb clinical trial of MIN-101 as monotherapy in patients with negative symptoms of schizophrenia. Data from the 12-week core phase of this trial were reported in May of this year.
Graphic representations of the data summarized below are available at http://ir.minervaneurosciences.com/events.cfm and contained in the Current Report on Form 8-K filed by Minerva on October 26, 2016.
“Data from the extension phase demonstrate a further and continuous improvement in negative symptoms in patients with schizophrenia, as measured by the negative symptom subscales of the Positive and Negative Syndrome Scale (PANSS),” said Dr. Remy Luthringer, president and chief executive officer of Minerva. “The longer patients were on monotherapy with MIN-101, the greater improvement they were observed to experience in their negative symptoms during the entire extension period, without evidence of reaching a plateau. We believe that such continuous improvement in symptoms over a nine month period in this patient population is unprecedented.
“The data also provide an extended safety profile for MIN-101 consistent with that observed during the core double-blind phase of the trial,” said Dr. Luthringer. “MIN-101 was reported to be well tolerated at both doses over the entire 36-week duration of the study by schizophrenic patients. In addition, positive symptoms were observed to remain stable through the extension period as measured by the PANSS positive symptom subscale score. Improvements in overall schizophrenic psychopathology were also observed, as measured by the PANSS general psychopathology subscale and the total PANSS score.
“We believe these exciting data point the way toward pivotal testing of MIN-101 as a novel, differentiated treatment for the large worldwide population of patients with schizophrenia for whom negative symptoms contribute substantially to poor quality of life and functional outcomes,” said Dr. Luthringer.
Results announced earlier this year from the double-blind, placebo-controlled 12-week core phase of the trial showed that it met its primary endpoint of statistically significant improvement in negative symptoms as measured by the PANSS pentagonal structure model (PSM), and showed statistically significant benefit in multiple secondary endpoints that included general psychopathology and cognition.
Patients who completed the core phase were provided the opportunity to enter into a 24-week, open-label extension phase. During the extension phase, all patients received either 32 milligrams (mg) or 64 mg of MIN-101. Patients who received placebo in the core phase were randomized to one of these two doses at the beginning of the extension phase. Data generated during the extension period were intended to provide longer term supportive evidence of efficacy and to complement the statistically significant results obtained during the core phase.
One hundred forty-two patients from the treatment and placebo groups in the core phase entered the extension phase, with 88 patients completing the extension. Seventy patients received 32 mg and 72 patients received 64 mg during the extension.
Negative symptoms, assessed based on the PANSS PSM, were observed to continue to improve during the extension phase, as shown by a reduction from the study start for the 32 and 64 mg-treated groups of 5.5 points and 4.9 points, respectively, and by a reduction of 5.4 points and 5.3 points, respectively, in the PANSS three factors negative symptoms subscale. Reductions over time of PANSS negative PSM scores are shown in the attached graph.
Positive symptoms were observed to remain stable throughout the study, as measured by PANSS positive symptom scores. This finding is consistent with the hypothesis that MIN-101 has a direct and specific effect on negative symptoms.
General psychopathology was observed to improve during the extension phase for the 32 and 64 mg groups, as shown by reductions in the PANSS general psychopathology subscale score and total PANSS score.
MIN-101 was generally reported to be well tolerated through the entire 36-week period. QTcF, a measurement of cardiac function, was closely monitored throughout the study, and discontinuation criteria based on QTcF prolongation were incorporated in the protocol. As previously announced, two patients out of 162 who received MIN-101 in the core phase were discontinued based upon these criteria; both of these patients received the higher dose (64 mg). In the extension phase no additional patients were discontinued. The extension data also confirm that MIN-101 at the doses tested did not have an effect on extra-pyramidal symptoms (EPS), prolactin or weight gain.
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