DUBLIN, Ireland and BUDAPEST, Hungary, Aug. 5, 2016 /PRNewswire/ -- Allergan plc (NYSE: AGN), a leading global pharmaceutical company, and Gedeon Richter Plc., today provided a clinical and regulatory update on cariprazine. For more than a decade both companies have conducted over 20 clinical trials enrolling thousands of patients worldwide to evaluate the efficacy and safety of cariprazine for patients suffering from a broad range of mental health illnesses.
Cariprazine was approved by the FDA in September 2015 and is marketed as VRAYLAR™ in the US for the treatment of manic or mixed episodes of Bipolar I Disorder and Schizophrenia in adults.
MD-72 Adjunctive MDD Trial
The MD-72 trial was a prospective, randomized, double-blind, placebo-controlled, parallel-group study evaluating flexible doses of cariprazine (1.5- 4.5 mg) as an adjunctive treatment to antidepressant therapy in adults with major depressive disorder (MDD) who failed to adequately respond to antidepressant monotherapy. The study was conducted at multiple centers, all within the United States.
Topline results from the MD-72 trial indicate that flexible doses of cariprazine did not separate significantly from placebo as an add-on treatment in this trial. In a previously conducted trial (MD-75), flexible doses of cariprazine (2-4 mg) were significantly more effective than placebo as an adjunctive treatment to antidepressant therapy in adults with major depressive disorder (MDD) who failed to adequately respond to antidepressant monotherapy.
It is not uncommon that clinical trials in MDD fail to show a separation from placebo even with effective drugs. Both companies remain committed to developing cariprazine as a potential treatment option for patients suffering from this serious illness and will continue to work on a subsequent Phase 3 trial.
"We are disappointed with the results of this trial. However, we believe that our plan to move forward with another Phase 3 study in Adjunctive MDD coupled with our previous positive clinical trial would provide the two studies needed for submission. This is an important next step to further develop the cariprazine program," said David Nicholson, Chief R&D Officer at Allergan.
Patient Enrollment underway for Bipolar Depression trials
Allergan and Gedeon Richter have started the patient enrollment in their Phase 3 clinical trial program investigating the use of cariprazine as a treatment for bipolar depression. Two parallel studies will be conducted at approximately 85 sites across the U.S. and Europe.
The companies have previously announced positive Phase 2b data for cariprazine for the treatment of bipolar depression. This data was published in in the Journal of American Psychiatry in November 2015.
Additional development programs in Prevention of Schizophrenia Relapse and Predominant Negative Symptoms of Schizophrenia
In January 2015 Gedeon Richter and Allergan announced positive phase 3 trial results for cariprazine in the prevention of relapse of schizophrenia symptoms in adult patients. The companies are planning to submit an efficacy supplement that will provide for the maintenance of efficacy in schizophrenia patients.
In January 2015, Gedeon Richter announced a positive Phase 3 study that evaluated cariprazine for the treatment of predominant negative symptoms (PNS) of schizophrenia. Both companies are in active discussions with FDA regarding the submission of an efficacy supplement to provide for the treatment of PNS. Based on our current regulatory interactions we intend to file in the first half of 2017.
PNS is a serious unmet need for which there are no approved treatment options available.
About VRAYLAR (cariprazine)
VRAYLAR is an oral, once daily atypical antipsychotic approved for the acute treatment of adult patients with manic or mixed episodes associated with bipolar I disorder, with a recommended dose range of 3 to 6 mg/day and for the treatment of schizophrenia in adults, with a recommended dose range of 1.5 to 6 mg/day.
IMPORTANT SAFETY INFORMATION
WARNING: INCREASED MORTALITY IN ELDERLY PATIENTS WITH DEMENTIA-RELATED PSYCHOSIS
Elderly patients with dementia-related psychosis treated with antipsychotic drugs are at an increased risk of death. VRAYLAR is not approved for treatment of patients with dementia-related psychosis.
Contraindication: VRAYLAR is contraindicated in patients with known hypersensitivity. Reactions have included rash, pruritus, urticaria, and events suggestive of angioedema.
Cerebrovascular Adverse Reactions, Including Stroke: In clinical trials with antipsychotic drugs, elderly subjects with dementia had a higher incidence of cerebrovascular adverse reactions, including fatalities vs placebo. VRAYLAR is not approved for the treatment of patients with dementia-related psychosis.
Neuroleptic Malignant Syndrome (NMS): NMS, a potentially fatal symptom complex, has been reported with antipsychotics drugs. NMS may cause hyperpyrexia, muscle rigidity, delirium, and autonomic instability. Additional signs may include elevated creatine phosphokinase, myoglobinuria (rhabdomyolysis), and acute renal failure. Manage with immediate discontinuation, intensive symptomatic treatment, and monitoring.
Tardive Dyskinesia (TD): Risk of developing TD (a syndrome of potentially irreversible, involuntary, dyskinetic movements) and the likelihood it will become irreversible may increase with the duration of treatment and the cumulative dose. The syndrome can develop after a relatively brief treatment period, even at low doses, or after treatment discontinuation. If signs and symptoms of TD appear, drug discontinuation should be considered.
Late-Occurring Adverse Reactions: Adverse events may first appear several weeks after initiation of VRAYLAR, probably because plasma levels of cariprazine and its major metabolites accumulate over time. As a result, the incidence of adverse reactions in short-term trials may not reflect the rates after longer term exposures. Monitor for adverse reactions, including extrapyramidal symptoms (EPS) or akathisia, and patient response for several weeks after starting VRAYLAR and after each dosage increase. Consider reducing the dose or discontinuing the drug.
Metabolic Changes: Atypical antipsychotics have caused metabolic changes, such as:
- Hyperglycemia and Diabetes Mellitus: Hyperglycemia, in some cases associated with ketoacidosis, hyperosmolar coma, or death, has been reported in patients treated with atypical antipsychotics. Assess fasting glucose before or soon after initiation of treatment, and monitor periodically during long-term treatment.
- Dyslipidemia: Atypical antipsychotics cause adverse alterations in lipids. Before or soon after starting an antipsychotic, obtain baseline fasting lipid profile and monitor periodically during treatment.
- Weight Gain: Weight gain has been observed with VRAYLAR. Monitor weight at baseline and frequently thereafter.
Leukopenia, Neutropenia, and Agranulocytosis: Leukopenia/neutropenia have been reported with antipsychotics, including VRAYLAR. Agranulocytosis (including fatal cases) has been reported with other antipsychotics. Monitor complete blood count in patients with pre-existing low white blood cell count (WBC)/absolute neutrophil count or history of drug-induced leukopenia/neutropenia. Discontinue VRAYLAR at the first sign of a clinically significant decline in WBC and in severely neutropenic patients.
Orthostatic Hypotension and Syncope: Atypical antipsychotics cause orthostatic hypotension and syncope, with the greatest risk during initial titration and with dose increases. Monitor orthostatic vital signs in patients predisposed to hypotension and in those with cardiovascular/cerebrovascular diseases.
Seizures: Use VRAYLAR with caution in patients with history of seizures or with conditions that lower the seizure threshold.
Potential for Cognitive and Motor Impairment: Somnolence was reported with VRAYLAR. Caution patients about performing activities requiring mental alertness (eg, operating hazardous machinery or a motor vehicle).
Body Temperature Dysregulation: Use VRAYLAR with caution in patients who may experience conditions that increase body temperature (eg, strenuous exercise, extreme heat, dehydration, or concomitant anticholinergics).
Dysphagia: Esophageal dysmotility and aspiration have been associated with antipsychotics. Antipsychotic drugs, including VRAYLAR, should be used cautiously in patients at risk for aspiration.
Drug Interactions: Strong CYP3A4 inhibitors increase VRAYLAR concentrations, so VRAYLAR dose reduction is recommended. Concomitant use with CYP3A4 inducers is not recommended.
Adverse Reactions: In clinical trials, the most common adverse reactions (≥5% and at least twice the rate of placebo) are listed below:
- Schizophrenia: The incidences within the recommended dose range (VRAYLAR 1.5 – 3 mg/day and 4.5 – 6 mg/day vs placebo) were: EPS (15%, 19% vs 8%) and akathisia (9%, 13% vs 4%)
- Bipolar mania: The incidences within the recommended dose range (VRAYLAR 3 – 6 mg/day vs placebo) were: EPS (26% vs 12%), akathisia (20% vs 5%), dyspepsia (7% vs 4%), vomiting (10% vs 4%), somnolence (7% vs 4%), and restlessness (7% vs 2%)
About Gedeon Richter
Gedeon Richter Plc. (www.richter.hu), headquartered in Budapest/Hungary, is a major pharmaceutical company in Central Eastern Europe, with an expanding direct presence in Western Europe. Having reached a market capitalisation of EUR 3.3 billion (US$ 3.6 billion) by the end of 2015, Richter's consolidated sales were approximately EUR 1.2 billion (US$ 1.3 billion) during the same year. The product portfolio of Richter covers many important therapeutic areas, including gynaecology, central nervous system, and cardiovascular areas. Having the largest R&D unit in Central Eastern Europe, Richter's original research activity focuses on CNS disorders. With its widely acknowledged steroid chemistry expertise, Richter is a significant player in the female healthcare field worldwide. Richter is also active in biosimilar product development.
Allergan plc (NYSE: AGN), headquartered in Dublin, Ireland, is a bold, global pharmaceutical company and a leader in a new industry model – Growth Pharma. Allergan is focused on developing, manufacturing and commercializing branded pharmaceuticals, devices and biologic products for patients around the world.
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SOURCE Allergan plc