Atypical antipsychotic drugs, including brexpiprazole tablets, 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.
Hyperglycemia and Diabetes Mellitus
Hyperglycemia, in some cases extreme and associated with ketoacidosis or hyperosmolar coma or death, has been reported in patients treated with atypical antipsychotics. There have been reports of hyperglycemia in patients treated with brexpiprazole tablets. Assess fasting plasma glucose before or soon after initiation of antipsychotic medication and monitor periodically during long-term treatment.
Major Depressive Disorder
In the 6-week placebo-controlled, fixed-dose clinical trials in adult patients with MDD, the proportions of patients with shifts in fasting glucose from normal (less than 100 mg/dL) to high (greater than or equal to 126 mg/dL) and borderline (greater than or equal to 100 and less than 126 mg/dL) to high were similar in patients treated with brexpiprazole tablets and placebo.
In the long-term, open-label depression studies, 5% of adult patients with normal baseline fasting glucose experienced a shift to high while taking brexpiprazole tablets plus an antidepressant (ADT); 25% of patients with borderline fasting glucose experienced shifts to high. Combined, 9% of patients with normal or borderline fasting glucose experienced shifts to high fasting glucose during the long-term depression studies.
Schizophrenia
Adults
In the 6-week placebo-controlled, fixed-dose clinical trials in adult patients with schizophrenia, the proportions of patients with shifts in fasting glucose from normal (less than 100 mg/dL) to high (greater than or equal to 126 mg/dL) or borderline (greater than or equal to 100 and less than 126 mg/dL) to high were similar in patients treated with brexpiprazole tablets and placebo.
In the long-term, open-label schizophrenia studies, 8% of adult patients with normal baseline fasting glucose experienced a shift from normal to high while taking brexpiprazole tablets; 17% of patients with borderline fasting glucose experienced shifts from borderline to high. Combined, 10% of patients with normal or borderline fasting glucose experienced shifts to high fasting glucose during the long-term schizophrenia studies.
Dyslipidemia
Atypical antipsychotics cause adverse alterations in lipids. Before or soon after initiation of antipsychotic medication, obtain a fasting lipid profile at baseline and monitor periodically during treatment.
Major Depressive Disorder
In the 6-week placebo-controlled, fixed-dose clinical trials in adult patients with MDD, changes in fasting total cholesterol, LDL cholesterol, and HDL cholesterol were similar in brexpiprazole tablets- and placebo-treated patients. Table 3 shows the proportions of patients with changes in fasting triglycerides.
Table 3: Change in Fasting Triglycerides in the 6-Week Placebo-Controlled, Fixed-Dose MDD Trials
* denotes n/N where N=the total number of patients who had a measurement at baseline and at least one post-baseline result n=the number of patients with shift
|
Proportion of Patients with Shifts Baseline to Post-Baseline |
Triglycerides | Placebo | 1 mg/day | 2 mg/day | 3 mg/day |
Normal to High (˂150 mg/dL to ≥ 200 and ˂ 500 mg /dL) | 6% (15/257)* | 5% (7/145)* | 13% (15/115)* | 9% (13/150)* |
Normal/Borderline to Very High (˂200 mg/dL to ≥ 500 mg/dL) | 0% (0/309)* | 0% (0/177)* | 0.7% (1/143)* | 0% (0/179)* |
In the long-term, open-label depression studies, shifts in baseline fasting cholesterol from normal to high were reported in 9% (total cholesterol), 3% (LDL cholesterol), and shifts in baseline from normal to low were reported in 14% (HDL cholesterol) of patients taking brexpiprazole tablets. Of patients with normal baseline triglycerides, 17% experienced shifts to high, and 0.2% experienced shifts to very high. Combined, 0.6% of patients with normal or borderline fasting triglycerides experienced shifts to very high fasting triglycerides during the long-term depression studies.
Schizophrenia
Adults
In the 6-week placebo-controlled, fixed-dose clinical trials in adult patients with schizophrenia, changes in fasting total cholesterol, LDL cholesterol, and HDL cholesterol were similar in brexpiprazole tablets- and placebo-treated patients. Table 4 shows the proportions of patients with changes in fasting triglycerides.
Table 4: Change in Fasting Triglycerides in the 6-Week Placebo-Controlled, Fixed-Dose Schizophrenia Trials in Adult Patients
* denotes n/N where N=the total number of patients who had a measurement at baseline and at least one post-baseline result n=the number of patients with shift
|
Proportion of Patients with Shifts Baseline to Post-Baseline |
Triglycerides | Placebo | 1 mg/day | 2 mg/day | 4 mg/day |
Normal to High (˂150 mg/dL to ≥ 200 and ˂ 500 mg /dL) | 6% (15/253)* | 10% (7/72)* | 8% (19/232)* | 10% (22/226)* |
Normal/Borderline to Very High (˂200 mg/dL to ≥ 500 mg/dL) | 0% (0/303)* | 0% (0/94)* | 0% (0/283)* | 0.4% (1/283)* |
In the long-term, open-label schizophrenia studies in adult patients, shifts in baseline fasting cholesterol from normal to high were reported in 6% (total cholesterol), 2% (LDL cholesterol), and shifts in baseline from normal to low were reported in 17% (HDL cholesterol) of patients taking brexpiprazole tablets. Of patients with normal baseline triglycerides, 13% experienced shifts to high, and 0.4% experienced shifts to very high triglycerides. Combined, 0.6% of patients with normal or borderline fasting triglycerides experienced shifts to very high fasting triglycerides during the long-term schizophrenia studies.
Weight Gain
Weight gain has been observed in patients treated with atypical antipsychotics, including brexpiprazole tablets. Monitor weight at baseline and frequently thereafter.
Major Depressive Disorder
Table 5 shows weight gain data at last visit and percentage of adult patients with greater than or equal to 7% increase in body weight at endpoint from the 6-week placebo-controlled, fixed-dose clinical studies in patients with MDD.
Table 5: Increases in Body Weight in the 6-Week Placebo-Controlled, Fixed-Dose MDD Trials
* N=the total number of patients who had a measurement at baseline and at least one post-baseline result n=the number of patients with a shift greater than or equal to 7%
|
| Placebo n=407 | 1 mg/day n=225 | 2mg/day n=187 | 3mg/day n=228 |
Mean Change from Baseline (kg) at Last Visit |
All Patients | +0.3 | +1.3 | +1.6 | +1.6 |
Proportion of Patients with a ≥7% Increase in Body Weight (kg) at Any Visit (*n/N) |
| 2% | 5% | 5% | 2% |
| (8/407)* | (11/225)* | (9/187)* | (5/228)* |
In the long-term, open-label depression studies, 4% of patients discontinued due to weight increase. Brexpiprazole tablets was associated with mean change from baseline in weight of 2.9 kg at Week 26 and 3.1 kg at Week 52. In the long-term, open-label depression studies, 30% of patients demonstrated a greater than or equal to 7% increase in body weight, and 4% demonstrated a greater than or equal to 7% decrease in body weight.
Schizophrenia
Adults
Table 6 shows weight gain data at last visit and percentage of adult patients with greater than or equal to 7% increase in body weight at endpoint from the 6-week placebo-controlled, fixed-dose clinical studies in adult patients with schizophrenia.
Table 6: Increases in Body Weight in the 6-Week Placebo-Controlled, Fixed-Dose Schizophrenia Trials in Adult Patients
* denotes n/N where N=the total number of patients who had a measurement at baseline and at least one post-baseline result n=the number of patients with a shift greater than or equal to 7%
|
| Placebo n=362 | 1 mg/day n=120 | 2mg/day n=362 | 4mg/day n=362 |
Mean Change from Baseline (kg) at Last Visit |
All Patients | +0.2 | +1.0 | +1.2 | +1.2 |
Proportion of Patients with a ≥7% Increase in Body Weight (kg) at Any Visit (*n/N) |
| 4% | 10% | 11% | 10% |
| (15/362)* | (12/120)* | (38/362)* | (37/362)* |
In the long-term, open-label schizophrenia studies in adult patients, 0.6% of patients discontinued due to weight increase. Brexpiprazole tablets was associated with mean change from baseline in weight of 1.3 kg at Week 26 and 2.0 kg at Week 52. In the long-term, open label schizophrenia studies, 20% of patients demonstrated a greater than or equal to 7% increase in body weight, and 10% demonstrated a greater than or equal to 7% decrease in body weight.
Pediatric use information is approved for Otsuka Pharmaceutical Company, Ltd.’s Rexulti® (brexpiprazole) tablets. However, due to Otsuka Pharmaceutical Company, LTD.’s marketing exclusivity rights, this drug product is not labeled with that information.