Aim: We conducted a 1-year retrospective mirror-image study to investigate the effect of aripiprazole once monthly (AOM) on rehospitalization for bipolar disorder.
Methods: Participants were recruited from psychiatric emergency and acute care hospitals in western Japan. We included 39 participants with bipolar disorder who had been administered AOM for at least 1 year with no missing medical records during the observational period. The primary outcomes were rehospitalization rate, number of rehospitalizations, total hospitalization days, and time to rehospitalization in the context of overall psychiatric readmissions. The significance level was set at p < 0.05.
Results: AOM significantly reduced the rehospitalization rate from 23/39 (59%) to 7/39 (18%) (p = 0.001). The number of rehospitalizations decreased significantly from a mean of 0.85 per person-year to 0.41 per person-year (p = 0.048). The total hospitalization days significantly decreased from a mean of 34.9 days to 14.4 days (p = 0.008). AOM significantly prolonged the time to rehospitalization (p < 0.001).
Conclusion: This study found that AOM reduces overall psychiatric rehospitalization for bipolar disorder based on data from 1 year before and after AOM administration in the real-world setting. Future studies should examine the robustness and persistence of the rehospitalization preventive effect of AOM with larger sample sizes and longer observation periods beyond 1 year.
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http://dx.doi.org/10.1002/npr2.12371 | DOI Listing |
Sci Rep
January 2025
Pharmacy Department, University Clinical Hospital of Santiago de Compostela (SERGAS), 15706, Santiago de Compostela, Spain.
Aripiprazole (ARI) is an atypical antipsychotic which is a substrate of P-glycoprotein (P-gp), a transmembrane glycoprotein that plays a crucial role in eliminating potentially harmful compounds from the organism. ARI once-monthly (AOM) is a long-acting injectable form which improves treatment compliance. Genetic polymorphisms in ABCB1 may lead to changes in P-gp function, leading to individual differences in drug disposition.
View Article and Find Full Text PDFJ Manag Care Spec Pharm
January 2025
Global Value and Real-World Evidence, Otsuka Pharmaceutical Development & Commercialization, Inc., Princeton, NJ.
Background: Bipolar disorder is a severe recurrent, episodic psychiatric condition with a worldwide prevalence of approximately 1%, affecting more than 5 million adults in the United States in 2020. A subtype, bipolar I disorder (BP-I), which accounts for approximately one-quarter of cases, is associated with impairments in psychosocial functioning and quality of life. Recommended treatment options include daily oral, or long-acting injectable, antipsychotics, including the aripiprazole once every month formulation, which has been shown to improve adherence compared with oral treatments.
View Article and Find Full Text PDFBMC Psychiatry
November 2024
Department of Psychiatry, University of Calgary, Calgary, AB, Canada.
Ther Adv Psychopharmacol
November 2024
Otsuka Pharmaceutical Development & Commercialization Inc., Princeton, NJ, USA.
The purpose of this summary is to explain key findings from a study that included people with schizophrenia, as described in two separate articles (see the 'Further Information' section for more details). The study compared a new formulation of aripiprazole, given as an injection once every 2 months, with a once‑monthly injection of aripiprazole.
View Article and Find Full Text PDFTher Adv Psychopharmacol
October 2024
Otsuka Pharmaceutical Development & Commercialization Inc., Princeton, NJ, USA.
The purpose of this summary is to explain key findings from a study that included people with bipolar I disorder, as described in two separate articles (see the 'Further Information' section for more details). The study compared a new formulation of aripiprazole, given as an injection once every 2 months, with a once‑monthly injection of aripiprazole.
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