Brexpiprazole

REXULTI is indicated for: Adjunctive treatment to antidepressants for major depressive disorder (MDD) in adults Treatment of schizophrenia in adults and pediatric patients ages 13 years and older Treatment of agitation associated with dementia due to Alzheimer's disease Limitations of Use: REXULTI is not indicated as an as needed ("prn") treatment for agitation associated with dementia due to Alzheimer's disease [see Clinical Studies (14.3) ] . REXULTI is an atypical antipsychotic indicated for: Use as an adjunctive therapy to antidepressants for the treatment of major depressive disorder (MDD) in adults ( 1 , 14.1 ) Treatment of schizophrenia in adults and pediatric patients ages 13 years and older ( 1 , 14.2 ) Treatment of agitation associated with dementia due to Alzheimer's disease ( 1 , 14.3 ) Limitations of Use : REXULTI is not indicated as an as needed ("prn") treatment for agitation associated with dementia due to Alzheimer's disease ( 1 )

REXULTI tablets are available in 6 strengths: 0.25 mg tablets are light brown, round, shallow convex, bevel-edged body with "BRX" and "0.25" imprinted on one side. 0.5 mg tablets: are light orange, round, shallow convex, bevel-edged body with "BRX" and "0.5" imprinted on one side. 1 mg tablets are light yellow, round, shallow convex, bevel-edged body with "BRX" and "1" imprinted on one side. 2 mg tablets are light green, round, shallow convex, bevel-edged body with "BRX" and "2" imprinted on one side. 3 mg tablets are light purple, round, shallow convex, bevel-edged body with "BRX" and "3" imprinted on one side. 4 mg tablets are white, round, shallow convex, bevel-edged body with "BRX" and "4" imprinted on one side. Tablets: 0.25 mg, 0.5 mg, 1 mg, 2 mg, 3 mg, and 4 mg ( 3 )

REXULTI is contraindicated in patients with a known hypersensitivity to brexpiprazole or any of its components. Reactions have included rash, facial swelling, urticaria, and anaphylaxis. Known hypersensitivity to REXULTI or any of its components ( 4 )

Cerebrovascular Adverse Reactions in Elderly Patients with Dementia-Related Psychosis: Increased incidence of cerebrovascular adverse reactions (e.g., stroke, transient ischemic attack) ( 5.3 ) Neuroleptic Malignant Syndrome: Manage with immediate discontinuation and close monitoring. ( 5.4 ) Tardive Dyskinesia: Discontinue if clinically appropriate. ( 5.5 ) Metabolic Changes: Monitor for hyperglycemia/diabetes mellitus, dyslipidemia, and weight gain. ( 5.6 ) Pathological Gambling and Other Compulsive Behaviors: Consider dose reduction or discontinuation. ( 5.7 ) Leukopenia, Neutropenia, and Agranulocytosis: Perform complete blood counts (CBC) in patients with pre-existing low white blood cell count (WBC) or history of leukopenia or neutropenia. Consider discontinuing REXULTI if a clinically significant decline in WBC occurs in absence of other causative factors. ( 5.8 ) Orthostatic Hypotension and Syncope: Monitor heart rate and blood pressure and warn patients with known cardiovascular or cerebrovascular disease, and risk of dehydration or syncope. ( 5.9 ) Seizures: Use cautiously in patients with a history of seizures or with conditions that lower the seizure threshold. ( 5.11 ) Potential for Cognitive and Motor Impairment: Use caution when operating machinery. ( 5.14 )

5.1 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. Analyses of 17 placebo-controlled trials (modal duration of 10 weeks), largely in patients taking atypical antipsychotic drugs, revealed a risk of death in drug-treated patients of between 1.6 to 1.7 times the risk of death in placebo-treated patients. Over the course of a typical 10-week controlled trial, the rate of death in the drug-treated patients was about 4.5%, compared to a rate of about 2.6% in the placebo group. Although the causes of death were varied, most of the deaths appeared to be either cardiovascular (e.g., heart failure, sudden death) or infectious (e.g., pneumonia) in nature. REXULTI is not approved for the treatment of patients with dementia-related psychosis without agitation associated with dementia due to Alzheimer's disease [see Boxed Warning , Warnings and Precautions (5.3) ] .

5.2 Suicidal Thoughts and Behaviors in Children, Adolescents, and Young Adults In pooled analyses of placebo-controlled trials of antidepressant drugs (SSRIs and other antidepressant classes) that included approximately 77,000 adult patients and over 4,400 pediatric patients, the incidence of suicidal thoughts and behaviors in patients 24 years of age and younger was greater in antidepressant-treated patients than in placebo-treated patients. The drug-placebo differences in the number of cases of suicidal thoughts and behaviors per 1,000 patients treated are provided in Table 2 . No suicides occurred in any of the pediatric studies. There were suicides in the adult studies, but the number was not sufficient to reach any conclusion about antidepressant drug effect on suicide. Table 2 Risk Differences of the Number of Patients with Suicidal Thoughts or Behaviors in the Pooled Placebo-Controlled Trials of Antidepressants in Pediatric REXULTI is not approved in pediatric patients with MDD. and Adult Patients Age Range (years) Drug-Placebo Difference in Number of Patients with Suicidal Thoughts or Behaviors per 1,000 Patients Treated Increases Compared to Placebo <18 14 additional patients 18 to 24 5 additional patients Decreases Compared to Placebo 25 to 64 1 fewer patient ≥65 6 fewer patients It is unknown whether the risk of suicidal thoughts and behaviors in children, adolescents, and young adults extends to longer-term use, i.e., beyond four months. However, there is substantial evidence from placebo-controlled maintenance studies in adults with MDD that antidepressants delay the recurrence of depression. Monitor all antidepressant-treated patients for clinical worsening and emergence of suicidal thoughts and behaviors, especially during the initial few months of drug therapy and at times of dosage changes. Counsel family members or caregivers of patients to monitor for changes in behavior and to alert the healthcare provider. Consider changing the therapeutic regimen, including possibly discontinuing REXULTI, in patients whose depression is persistently worse or who are experiencing emergent suicidal thoughts or behaviors.

5.3 Cerebrovascular Adverse Reactions Including Stroke in Elderly Patients with Dementia-Related Psychosis In placebo-controlled trials in elderly patients with dementia, patients randomized to risperidone, aripiprazole, and olanzapine had a higher incidence of stroke and transient ischemic attack, including fatal stroke. REXULTI is not approved for the treatment of patients with dementia-related psychosis without agitation associated with dementia due to Alzheimer's disease [see Boxed Warning , Warnings and Precautions (5.1) ].

5.4 Neuroleptic Malignant Syndrome (NMS) Neuroleptic Malignant Syndrome (NMS), a potentially fatal symptom complex, has been reported in association with administration of antipsychotic drugs, including REXULTI. Clinical manifestations of NMS are hyperpyrexia, muscle rigidity, altered mental status, and evidence of autonomic instability (irregular pulse or blood pressure, tachycardia, diaphoresis and cardiac dysrhythmia). Additional signs may include elevated creatine phosphokinase, myoglobinuria (rhabdomyolysis), and acute renal failure. If NMS is suspected, immediately discontinue REXULTI and provide intensive symptomatic treatment and monitoring.

5.5 Tardive Dyskinesia Tardive dyskinesia, a syndrome consisting of potentially irreversible, involuntary, dyskinetic movements, may develop in patients treated with antipsychotic drugs. The risk appears to be highest among the elderly, especially elderly women, but it is impossible to predict which patients will develop the syndrome. Whether antipsychotic drugs differ in their potential to cause tardive dyskinesia is unknown. The risk of tardive dyskinesia and the likelihood that it will become irreversible appear to increase as the duration of treatment and the cumulative dose increases. The syndrome can develop after relatively brief treatment periods, at low doses. It may also occur after discontinuation of treatment. Tardive dyskinesia may remit, partially or completely, if antipsychotic treatment is discontinued. Antipsychotic treatment itself may suppress (or partially suppress) the signs and symptoms of the syndrome, possibly masking the underlying process. The effect that symptomatic suppression has upon the long-term course of tardive dyskinesia is unknown. Given these considerations, REXULTI should be prescribed in a manner most likely to reduce the occurrence of tardive dyskinesia. Chronic antipsychotic treatment should generally be reserved for patients who suffer from a chronic illness that 1) is known to respond to antipsychotic drugs and 2) for whom alternative, equally effective, but potentially less harmful treatments are not available or appropriate. In patients who do require chronic treatment, use the lowest dose and the shortest duration of treatment needed to produce a satisfactory clinical response. Periodically reassess the need for continued treatment. If signs and symptoms of tardive dyskinesia appear in a patient treated with REXULTI, drug discontinuation should be considered. However, some patients may require treatment with REXULTI despite the presence of the syndrome.

5.6 Metabolic Changes Atypical antipsychotic drugs, including REXULTI, have caused metabolic changes including hyperglycemia, diabetes mellitus, dyslipidemia, and body weight gain. Although all of the drugs in the class to date have been shown to produce some metabolic changes, each drug has its own specific risk profile. […]

The following adverse reactions are discussed in more detail in other sections of the labeling: Increased Mortality in Elderly Patients with Dementia-Related Psychosis [see Boxed Warning , Warnings and Precautions (5.1) ] Suicidal Thoughts and Behaviors in Adolescents and Young Adults [see Boxed Warning , Warnings and Precautions (5.2) ] Cerebrovascular Adverse Reactions Including Stroke in Elderly Patients with Dementia-Related Psychosis [see Warnings and Precautions (5.3) ] Neuroleptic Malignant Syndrome (NMS) [see Warnings and Precautions (5.4) ] Tardive Dyskinesia [see Warnings and Precautions (5.5) ] Metabolic Changes [see Warnings and Precautions (5.6) ] Pathological Gambling and Other Compulsive Behaviors [see Warnings and Precautions (5.7) ] Leukopenia, Neutropenia, and Agranulocytosis [see Warnings and Precautions (5.8) ] Orthostatic Hypotension and Syncope [see Warnings and Precautions (5.9) ] Falls [see Warnings and Precautions (5.10) ] Seizures [see Warnings and Precautions (5.11) ] Body Temperature Dysregulation [see Warnings and Precautions (5.12) ] Dysphagia [see Warnings and Precautions (5.13) ] Potential for Cognitive and Motor Impairment [see Warnings and Precautions (5.14) ] Most common adverse reactions in adults were ( 6.1 ): Adult patients with major depressive disorder (adjunctive treatment to antidepressant therapy): Weight increased, somnolence, and akathisia (≥5% and at least twice the rate for placebo) Adult Patients with schizophrenia : Weight increased (≥4% and at least twice the rate for placebo) Pediatric patients (13 to 17 years) with schizophrenia : Extrapyramidal symptoms, excluding akathisia (≥5% and at least twice the rate for placebo) Adult patients with agitation associated with dementia due to Alzheimer's disease: Nasopharyngitis, dizziness (≥4% and at least twice the rate for placebo) To report SUSPECTED ADVERSE REACTIONS, contact Otsuka America Pharmaceutical, Inc. at 1-800-438-9927 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in clinical practice. The most common adverse reactions in adult patients in clinical trials (≥5%) were weight increased, akathisia, headache, somnolence, and insomnia. The most common adverse reactions in pediatric patients in clinical trials (≥5%) were weight increased, somnolence, headache, akathisia, and nasopharyngitis. Brexpiprazole has been evaluated for safety in 12,550 adult patients who participated in multiple-dose clinical trials for major depressive disorder, schizophrenia, agitation associated with dementia due to Alzheimer's disease, attention deficit hyperactivity disorder (ADHD), post-traumatic stress disorder (PTSD), bipolar mania, and borderline personality disorder (BPD). Among them, 3,870 patients were treated with brexpiprazole for at least 180 days, and 1,910 patients were treated for at least one year of exposure. Additionally, brexpiprazole has been evaluated for safety in 119 pediatric patients who participated in short-term trials, and 314 patients in long-term multiple-dose clinical trials for pediatric schizophrenia and autism spectrum disorders (ASD). Adjunctive Treatment in Major Depressive Disorder (MDD) The safety of REXULTI was evaluated in 1054 adult patients (18 to 65 years of age) diagnosed with MDD who participated in two 6-week placebo-controlled, fixed-dose clinical studies in patients with major depressive disorder in which REXULTI was administered at doses of 1 mg to 3 mg daily as adjunctive treatment to continued antidepressant therapy; patients in the placebo group continued to receive antidepressant therapy [see Clinical Studies (14.1) ] . Adverse Reactions Reported as Reasons for Discontinuation of Treatment A total of 3% (17/643) of REXULTI-treated patients and 1% (3/411) of placebo-treated patients discontinued due to adverse reactions. Adverse Reactions in REXULTI Studies for Adjunctive MDD in Adults Adverse reactions associated with the adjunctive use of REXULTI (incidence of 2% or greater and adjunctive REXULTI incidence greater than adjunctive placebo) that occurred during acute therapy (up to 6-weeks in patients with MDD) are shown in Table 8. Table 8 Adverse Reactions in ≥2% of REXULTI-Treated Patients and Greater than Placebo in Pooled 6-Week Placebo-Controlled, Fixed-Dose Adjunctive MDD Studies in Adults (Study 1 and Study 2) Placebo (N=411) % REXULTI 1 mg/day (N=226) % 2 mg/day (N=188) % 3 mg/day (N=229) % All REXULTI (N=643) % Gastrointestinal Disorders Constipation 1 3 2 1 2 General Disorders and Administration Site Conditions Fatigue 2 3 2 5 3 Infections and Infestations Nasopharyngitis 2 7 1 3 4 Investigations Weight Increased 2 7 8 6 7 Blood Cortisol Decreased 1 4 0 3 2 Metabolism and Nutrition Increased Appetite 2 3 3 2 3 Nervous System Disorders Akathisia 2 4 7 14 9 Headache 6 9 4 6 7 Somnolence 0.5 4 4 6 5 Tremor 2 4 2 5 4 Dizziness 1 1 5 2 3 Psychiatric Disorders Anxiety 1 2 4 4 3 Restlessness 0 2 3 4 3 Dose-Related Adverse Reactions in the Adjunctive MDD Studies In Studies 1 and 2, among the adverse reactions that occurred at ≥2% incidence in the patients treated with REXULTI plus ADT, the incidences of akathisia and restlessness increased with increases in dose. Schizophrenia Adults The safety of REXULTI was evaluated in 852 adult patients (18 to 65 years of age) diagnosed with schizophrenia who participated in two 6-week placebo-controlled, fixed-dose clinical studies in which REXULTI was administered at daily doses of 1 mg, 2 mg, and 4 mg [see Clinical Studies (14.2) ]. Adverse Reactions Occurring at an Incidence of 2% or More in Patients Treated with REXULTI for Schizophrenia Adverse reactions associated with REXULTI (incidence of 2% or greater and REXULTI incidence greater than placebo) during short-term (up to 6 weeks) studies in adult patients with schizophrenia are shown in Table 9. Table 9 Adverse Reactions in ≥2% of REXULTI-Treated Patients and Greater than Placebo in Pooled 6-Week Placebo-Controlled, Fixed-Dose Schizophrenia Studies in Adult Patients (Study 3 and Study 4) Placebo (N=368) % REXULTI 1 mg/day (N=120) % 2 mg/day (N=368) % 4 mg/day (N=364) % ALL REXULTI (N=852) % Gastrointestinal Disorders Dyspepsia 2 6 2 3 3 Diarrhea 2 1 3 3 3 Investigations Weight Increased 2 3 4 4 4 Blood Creatine Phosphokinase Increased 1 4 2 2 2 Nervous System Disorders Akathisia 5 4 5 7 6 Tremor 1 2 2 3 3 Sedation 1 2 2 3 2 Pediatric Patients (13 to 17 years of age)] The safety of REXULTI was evaluated in 110 pediatric patients (13 to 17 years of age) diagnosed with schizophrenia who participated in a 6-week, placebo-controlled, clinical study in which REXULTI was administered at daily doses of 2 mg to 4 mg [see Clinical Studies (14.2) ]. Adverse Reactions Occurring at an Incidence of 2% or More in Pediatric Patients (13 to 17 years of age) Treated with REXULTI for Schizophrenia Adverse reactions associated with REXULTI (incidence of 2% or greater and REXULTI incidence greater than placebo) during short-term (up to 6 weeks) study in pediatric patients with schizophrenia are shown in Table 10. […]

Factors Dosage Adjustments for REXULTI ( 2.7 ) Strong CYP2D6 REXULTI may be administered without dosage adjustment in patients with MDD when administered with strong CYP2D6 inhibitors (e.g., paroxetine, fluoxetine). or CYP3A4 inhibitors Administer half of recommended dosage. Strong/moderate CYP2D6 with Strong/moderate CYP3A4 inhibitors Administer a quarter of the recommended dosage. Known CYP2D6 poor metabolizers taking strong/moderate CYP3A4 inhibitors Administer a quarter of the recommended dosage. Strong CYP3A4 inducers Double the recommended dosage and further adjust based on clinical response.

7.1 Drugs Having Clinically Important Interactions with REXULTI See Table 12 for clinically important drug interactions with REXULTI. Table 12 Clinically Important Drug Interactions with REXULTI Strong CYP3A4 Inhibitors Clinical Impact: Concomitant use of REXULTI with strong CYP3A4 inhibitors increased the exposure of brexpiprazole compared to the use of REXULTI alone [see Clinical Pharmacology (12.3) ] . Intervention: With concomitant use of REXULTI with a strong CYP3A4 inhibitor, reduce the REXULTI dosage [see Dosage and Administration (2.7) ] . Strong CYP2D6 Inhibitors In the clinical studies examining the adjunctive use of REXULTI in the treatment of MDD, dosage was not adjusted for strong CYP2D6 inhibitors (e.g., paroxetine, fluoxetine). Thus, CYP considerations are already factored into general dosing recommendations, and REXULTI may be administered without dosage adjustment in patients with MDD. Clinical Impact: Concomitant use of REXULTI with strong CYP2D6 inhibitors increased the exposure of brexpiprazole compared to the use of REXULTI alone [see Clinical Pharmacology (12.3) ] . Intervention: With concomitant use of REXULTI with a strong CYP2D6 inhibitor, reduce the REXULTI dosage [see Dosage and Administration (2.7) ] . Both CYP3A4 Inhibitors and CYP2D6 Inhibitors Clinical Impact: Concomitant use of REXULTI with 1) a strong CYP3A4 inhibitor and a strong CYP2D6 inhibitor; or 2) a moderate CYP3A4 inhibitor and a strong CYP2D6 inhibitor; or 3) a strong CYP3A4 inhibitor and a moderate CYP2D6 inhibitor; or 4) a moderate CYP3A4 inhibitor and a moderate CYP2D6 inhibitor increased the exposure of brexpiprazole compared to the use of REXULTI alone [see Clinical Pharmacology (12.3) ]. Intervention: With concomitant use of REXULTI with 1) a strong CYP3A4 inhibitor and a strong CYP2D6 inhibitor; or 2) a moderate CYP3A4 inhibitor and a strong CYP2D6 inhibitor; or 3) a strong CYP3A4 inhibitor and a moderate CYP2D6 inhibitor; or 4) a moderate CYP3A4 inhibitor and a moderate CYP2D6 inhibitor, decrease the REXULTI dosage [see Dosage and Administration (2.7) ]. Strong CYP3A4 Inducers Clinical Impact: Concomitant use of REXULTI and a strong CYP3A4 inducer decreased the exposure of brexpiprazole compared to the use of REXULTI alone [see Clinical Pharmacology (12.3) ]. Intervention: With concomitant use of REXULTI with a strong CYP3A4 inducer, increase the REXULTI dosage [see Dosage and Administration (2.7) ].

7.2 Drugs Having No Clinically Important Interactions with REXULTI Based on pharmacokinetic studies, no dosage adjustment of REXULTI is required when administered concomitantly with CYP2B6 inhibitors (e.g., ticlopidine) or gastric pH modifiers (e.g., omeprazole). Additionally, no dosage adjustment for substrates of CYP2D6 (e.g., dextromethorphan), CYP3A4 (e.g., lovastatin), CYP2B6 (e.g., bupropion), BCRP (e.g., rosuvastatin), or P-gp (e.g., fexofenadine) is required when administered concomitantly with REXULTI.

Pregnancy: May cause extrapyramidal and/or withdrawal symptoms in neonates with third trimester exposure ( 8.1 )

8.1 Pregnancy Pregnancy Exposure Registry There is a pregnancy exposure registry that monitors pregnancy outcomes in women exposed to REXULTI during pregnancy. For more information contact the National Pregnancy Registry for Psychiatric Medications at 1-866-961-2388 or visit http://womensmentalhealth.org/clinical-and-research-programs/pregnancyregistry/ . Risk Summary Adequate and well-controlled studies have not been conducted with REXULTI in pregnant women to inform drug-associated risks. However, neonates whose mothers are exposed to antipsychotic drugs, like REXULTI, during the third trimester of pregnancy are at risk for extrapyramidal and/or withdrawal symptoms. In animal reproduction studies, no teratogenicity was observed with oral administration of brexpiprazole to pregnant rats and rabbits during organogenesis at doses up to 73 and 146 times, respectively, of maximum recommended human dose (MRHD) of 4 mg/day on a mg/m 2 basis. However, when pregnant rats were administered brexpiprazole during the period of organogenesis through lactation, the number of perinatal deaths of pups was increased at 73 times the MRHD [see Data ] . The background risk of major birth defects and miscarriage for the indicated population(s) is unknown. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2 to 4% and 15 to 20%, respectively. Clinical Considerations Fetal/Neonatal Adverse Reactions Extrapyramidal and/or withdrawal symptoms, including agitation, hypertonia, hypotonia, tremor, somnolence, respiratory distress and feeding disorder, have been reported in neonates whose mothers were exposed to antipsychotic drugs during the third trimester of pregnancy. These symptoms have varied in severity. Some neonates recovered within hours or days without specific treatment; others required prolonged hospitalization. Monitor neonates for extrapyramidal and/or withdrawal symptoms and manage symptoms appropriately. Data Animal Data Pregnant rats were treated with oral doses of 3, 10, and 30 mg/kg/day (7.3, 24, and 73 times the MRHD on a mg/m 2 basis) of brexpiprazole during the period of organogenesis. Brexpiprazole was not teratogenic and did not cause adverse developmental effects at doses up to 73 times the MRHD. Pregnant rabbits were treated with oral doses of 10, 30, and 150 mg/kg/day (49, 146, and 730 times the MRHD) of brexpiprazole during the period of organogenesis. Brexpiprazole was not teratogenic and did not cause adverse developmental effects at doses up to 146 times the MRHD. Findings of decreased body weight, retarded ossification, and increased incidences of visceral and skeletal variations were observed in fetuses at 730 times the MRHD, a dose that induced maternal toxicity. In a study in which pregnant rats were administered oral doses of 3, 10, and 30 mg/kg/day (7.3, 24, and 73 times the MRHD) during the period of organogenesis and through lactation, the number of live-born pups was decreased, and early postnatal deaths increased at a dose 73 times the MRHD. Impaired nursing by dams, and low birth weight and decreased body weight gain in pups were observed at 73 times, but not at 24 times, the MRHD.

8.2 Lactation Risk Summary Lactation studies have not been conducted to assess the presence of brexpiprazole in human milk, the effects of brexpiprazole on the breastfed infant, or the effects of brexpiprazole on milk production. Brexpiprazole is present in rat milk. The development and health benefits of breastfeeding should be considered along with the mother's clinical need for REXULTI and any potential adverse effects on the breastfed infant from REXULTI or from the underlying maternal condition.

8.4 Pediatric Use Schizophrenia The safety and effectiveness of REXULTI for treatment of schizophrenia have been established in pediatric patients 13 years of age and older. Use of REXULTI in this population is supported by evidence from adequate and well-controlled studies in adults and pediatric patients with schizophrenia, pharmacokinetic data from adults and pediatric patients, and safety data in pediatric patients 13 to 17 years of age [see Warnings and Precautions (5.6) , Adverse Reactions (6.1) , Clinical Pharmacology (12.3) , Clinical Studies (14.2) ] . The safety and effectiveness of REXULTI for the treatment of schizophrenia have not been established in pediatric patients less than 13 years of age. Major Depressive Disorder The safety and effectiveness of REXULTI for treatment of major depressive disorder have not been established in pediatric patients. Antidepressants increased the risk of suicidal thoughts and behaviors in pediatric patients [see Boxed Warning , Warnings and Precautions (5.2) ] . Irritability Associated with Autism Spectrum Disorder The safety and effectiveness of REXULTI for the treatment of irritability associated with autism spectrum disorder have not been established in pediatric patients. Effectiveness was not demonstrated, in an 8-week, double-blind, placebo-controlled, flexible-dose clinical study conducted in 119 REXULTI-treated pediatric patients 5 to 17 years of age with irritability associated with autism spectrum disorder diagnosed by the Diagnostic and Statistical Manual of Mental Disorders, 5 th Edition [DSM-5] criteria. In this study, somnolence (including sedation) occurred at a higher rate than reported in other REXULTI studies evaluating adults and elderly patients (16% in REXULTI-treated pediatric patients versus 5% for placebo). The mean increase in age-and-gender adjusted body weight z-score from baseline to last visit was 0.3 for REXULTI-treated patients versus 0.1 for placebo-treated patients. Increases in age-and-gender adjusted body weight z-score of at least 0.5 SD from baseline was higher in REXULTI-treated patients versus placebo (19% versus 5%). Of the 119 patients from this study, 95 patients entered the open-label treatment study and received up to 26 weeks of daily treatment with brexpiprazole. During the open-label treatment period, 2% of patients discontinued due to weight increase. In patients previously treated with REXULTI for 8 weeks, the mean increase in weight from the open-label study baseline to last visit was 4.5 kg and 26% of patients had an increase in age-and-gender-adjusted body weight z-score of at least 0.5 SD from baseline. Juvenile Animal Studies Juvenile rats were administered oral doses of brexpiprazole of 3, 10, and 20 mg/kg/day once daily beginning from weaning (postnatal day 21) through adulthood (postnatal day 90), followed by a 4-week recovery (non-dosing) period. Results were similar to those observed in previous repeat‑dose toxicity studies in adolescent (8-week-old) rats. Mortality occurred at the high dose of 20 mg/kg/day, as well as delayed sexual maturation in males and decreased rearing and motor activity. There was no evidence of neurotoxicity or effects on fertility and reproductive function. Histopathologic changes in reproductive organs and mammary glands occurred at all doses, were related to the pharmacology of brexpiprazole and were comparable to those in adult rats. All findings were at least partially reversible. Juvenile dogs were administered oral doses of brexpiprazole of 1, 3, and 30 mg/kg/day once daily starting at 8 or 9 weeks of age for 26 weeks, followed by an 8-week recovery (non-dosing) period. Decreases in body weight, lethargy, changes in heart rate, and immature male sex organs were observed at 30 mg/kg/day. These findings were at least partially reversible.

8.5 Geriatric Use Antipsychotic drugs increase the risk of death in elderly patients with dementia-related psychosis. REXULTI is not approved for the treatment of patients with dementia-related psychosis [see Boxed Warning , Warnings and Precautions (5.1) ] . […]