- The flexible dose phase III trial met its primary endpoint, while the fixed dose phase III trial missed its primary endpoint
- Lundbeck and Otsuka will discuss these results with FDA to determine next steps
Valby,
The first trial (NCT04124614) was a phase III, randomized, double-blind, 2-arm, flexible dose trial to evaluate the efficacy, safety, and tolerability of brexpiprazole (2 - 3 mg/day) as combination therapy with sertraline in 416 randomized adult subjects with PTSD.
The second trial (NCT04174170) was a phase III, randomized, double-blind, 3-arm, fixed dose trial to evaluate the efficacy, safety, and tolerability of brexpiprazole (2 or 3 mg/day) as combination therapy with sertraline in 553 randomized adult subjects with PTSD.
The primary endpoint for both trials was the change in the Clinician-Administered PTSD Scale (CAPS-5) total score for brexpiprazole + sertraline combination therapy versus sertraline + placebo at week 10 in patients diagnosed with PTSD according to the Diagnostic and Statistical Manual of Mental Disorders (DSM-5).
The first trial met its primary endpoint by demonstrating improvements from baseline on the primary endpoint of CAPS-5 for patients receiving brexpiprazole 2-3 mg/day + sertraline combination therapy being statistically significantly greater than for those receiving sertraline + placebo (p<0.05). The second phase 3 trial missed its primary endpoint (p>0.05).
Overall, the safety and tolerability results were consistent with the profile of brexpiprazole as observed in the clinical trials for schizophrenia, agitation associated with dementia due to Alzheimer's disease (AADAD), and adjunctive treatment of major depressive disorder (MDD). The most common treatment emergent adverse events in patients receiving combination therapy of brexpiprazole + sertraline versus sertraline + placebo (incidence at least 2% and greater than sertraline + placebo) were dyspepsia, fatigue, weight increased, akathisia and somnolence. Discontinuations due to adverse events occurred in 3.7% of patients treated with brexpiprazole + sertraline combination therapy and 7.6% of patients receiving sertraline + placebo.
Full trial results are not yet available. Further prespecified and exploratory analyses of this data set will be conducted to further assess brexpiprazole as combination therapy with sertraline for the treatment of PTSD. The trial results are planned to be submitted for scientific publication.
"The results from the first trial indicate that brexpiprazole in combination with sertraline provides improvement of symptoms for people living with PTSD, whereas the second trial did not meet its primary endpoint," said
"PTSD is a serious mental health disorder with a wide range of symptoms with no new therapeutic options in more than 20 years," Dr.
Lundbeck and Otsuka are incredibly appreciative to all the patients with PTSD, their families, and the investigators who participated in the trials and contributed greatly to this research.
About the trials
Trials 331-201-00071 (NCT04124614) and 331-201-00072 (NCT04174170) were designed to evaluate the efficacy, safety and tolerability of brexpiprazole and sertraline combination treatment in adults with PTSD. The trial populations included male and female patients, aged 18-65 years (inclusive), with a diagnosis of PTSD according to the DSM-5 and confirmed by the Mini International Neuropsychiatric Interview. The trials consisted of a 1-week double-blind placebo run-in period followed by 11-weeks of double-blind randomized treatment for a continuous 12-week double-blind treatment period with a 21-day follow-up]. Trial 331-201-00071 was a 2-arm, double-blind, flexible-dose trial in which patients were randomized to receive either flexible-dose brexpiprazole 2-3 mg/day plus sertraline 150 mg/day or sertraline 150 mg/day plus placebo during the 11-week randomized treatment period. Trial 331-201-00072 was a 3-arm, double-blind, fixed-dose trial in which patients were randomized to receive either fixed-dose brexpiprazole 2 mg/day plus sertraline 150 mg/day, brexpiprazole 3 mg/day plus sertraline 150 mg/day, or sertraline 150 mg/day plus placebo during the 11-week randomized treatment period. The primary outcome in both trials was the change from randomization to week 10 in the CAPS-5 total score in those patients that met blinded criteria at the week 1 visit of the trial.
About CAPS-5
The Clinician-Administered PTSD Scale for DSM-5 (CAPS-5) is a structured interview designed to assess PTSD diagnostic status and symptoms severity as defined by the Diagnostic and Statistical Manual of Mental Disorders, 5th Edition (DSM-5). The interview consists of 30 items, with a higher score indicating a worse outcome.
About Post-Traumatic Stress Disorder
PTSD is a psychiatric disorder that may occur in people who have experienced, or witnessed, a traumatic event, series of events or set of circumstances. An individual may experience this as emotionally or physically harmful or life-threatening and may affect mental, physical, social, and/or spiritual well-being.1 Examples include natural disasters, serious accidents, terrorist acts, war/combat, rape/sexual assault, historical trauma, intimate partner violence and bullying.1
PTSD can occur in all people, of any ethnicity, nationality or culture, and at any age. It affects more than 13 million people in the
Symptoms of PTSD are generally grouped into four types: intrusive memories, avoidance, negative changes in thinking and mood, and changes in physical and emotional reactions. Symptoms can vary over time or vary from person to person.3 Symptoms usually begin within 3 months of the traumatic incident, but they sometimes emerge later.4 To meet the criteria for PTSD, symptoms must last longer than 1 month, and they must be severe enough to interfere with aspects of daily life, such as relationships or work.4
About brexpiprazole
Brexpiprazole was approved in the
Brexpiprazole was discovered by Otsuka and is being co-developed by Otsuka and Lundbeck. The mechanism of action of brexpiprazole is unknown, however the efficacy of brexpiprazole may be mediated through a combination of partial agonist activity at serotonin 5-HT1A and dopamine D2 receptors, antagonist activity at serotonin 5-HT2A receptors, as well as antagonism of alpha 1B/2C receptors.
Lundbeck contacts
Investors: | Media: |
Vice President, Investor Relations | Media Relations Lead, Corp. Communication |
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+45 30 83 24 60 |
Otsuka contacts
Otsuka in
Leader, Pharmaceutical PR
gilbert.jeffrey@otsuka.co.jp
+81 3 6361 7379
About H. Lundbeck A/S
Lundbeck is a global pharmaceutical company specialized in brain diseases. For more than 70 years, we have been at the forefront of neuroscience research. We are tirelessly dedicated to restoring brain health, so every person can be their best. We are committed to fighting stigma and discrimination against people living with brain diseases and advocating for broader social acceptance of people with brain health conditions. Our research programs tackle some of the most complex challenges in neuroscience, and our pipeline is focused on bringing forward transformative treatments for brain diseases for which there are few, if any therapeutic options.
For additional information, we encourage you to visit our corporate site www.lundbeck.com and connect with us via LinkedIn.
About Otsuka
In pharmaceuticals, Otsuka is a leader in the challenging areas of mental, renal, and cardiovascular health and has additional research programs in oncology and on several under-addressed diseases including tuberculosis, a significant global public health issue. These commitments illustrate how Otsuka is a "big venture" company at heart, applying a youthful spirit of creativity in everything it does.
Otsuka established a presence in the
OPDC and OAPI are indirect subsidiaries of
All Otsuka stories start by taking the road less traveled. Learn more about Otsuka in the
Citations
American Psychiatric Association . What is Posttraumatic Stress Disorder (PTSD). https://www.psychiatry.org/patients-families/ptsd/what-is-ptsdU.S. Department of Veteran Affairs . PTSD:National Center for PTSD . https://www.ptsd.va.gov/understand/common/common_adults.aspMayo Clinic . Post-traumatic stress disorder (PTSD). https://www.mayoclinic.org/diseases-conditions/posttraumatic-stress-disorder/symptoms-causes/syc-20355967National Institute of Mental Health . Post-Traumatic Stress Disorder. https://www.nimh.nih.gov/health/publications/post-traumatic-stress-disorder-ptsd
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