1
|
Kanemoto H, Kawasaki T. Care for Social Isolation and Loneliness in a Case With Late-Onset Delusional Disorder. Cureus 2024; 16:e56697. [PMID: 38646378 PMCID: PMC11032510 DOI: 10.7759/cureus.56697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/21/2024] [Indexed: 04/23/2024] Open
Abstract
Late-onset psychosis refers to the development of psychotic symptoms after the age of 40 and can encompass various conditions like schizophrenia, mood disorders with psychotic features, and delusional disorder. Non-pharmacological interventions are critically important in older adults with psychosis, especially considering the lack of evidence for the efficacy of antipsychotics and the high risk of side effects. Social isolation is recognized as one of the risks of late-onset psychosis, and interventions to eliminate this risk are becoming increasingly important in Japan, where social isolation among older people is widespread as society ages. We present a case of late-onset delusional disorder in which multidimensional interventions for social isolation and loneliness, which have significant impacts on symptoms, were effective in achieving persistent remission. The case involved a woman in her mid-70s who began to complain of paranoia that taking a painkiller recommended by her husband caused persistent pain. Her husband's hospitalization and the deterioration of her relationship with her children resulted in her becoming socially isolated, which intensified her delusions and led to aggressive behavior and depression. Although antipsychotic medications had a limited effect, remission was achieved through supportive psychotherapy, cognitive therapy, family education, participation in group occupational therapy, and the introduction of daycare services, which were implemented to reduce loneliness and social isolation. Specifically, supportive psychotherapy and family education for her loneliness, awareness of another possible cause of pain that she developed through Socratic questioning, and environmental adjustments played important roles in preparing her to accept cognitive therapy, achieve delusional remission, and maintain her state of remission, respectively. The interventions implemented in this case provide insights for addressing social isolation and loneliness in late-onset psychosis.
Collapse
Affiliation(s)
- Hideki Kanemoto
- Department of Psychiatry, Osaka University Graduate School of Medicine, Osaka, JPN
| | | |
Collapse
|
2
|
Kato M, Shiosakai M, Kuwahara K, Iba K, Shimada Y, Saito M, Isogai Y, Sekine D, Aoki K, Koga N, Higuchi T. Adjunctive brexpiprazole 1 mg and 2 mg daily for Japanese patients with major depressive disorder following inadequate response to antidepressants: a phase 2/3, randomized, double-blind (BLESS) study. Psychiatry Clin Neurosci 2024; 78:113-122. [PMID: 37933521 DOI: 10.1111/pcn.13615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/27/2023] [Accepted: 11/04/2023] [Indexed: 11/08/2023]
Abstract
AIMS Inadequate antidepressant response interrupts effective treatment of major depressive disorder (MDD). The BLESS study evaluates the dosage, efficacy, and safety of brexpiprazole adjunctive therapy in Japanese patients with inadequate antidepressant therapy (ADT) response. METHODS This placebo-controlled, randomized, multicenter, parallel-group phase 2/3 study randomized Japanese MDD patients (Hamilton Rating Scale for Depression 17-item total score ≥ 14; historical inadequate response to 1-3 ADTs) with inadequate response to 8-week single-blind, prospective SSRI/SNRI treatment to 6-week adjunctive treatment with brexpiprazole 1 mg, 2 mg, or placebo. The primary endpoint was change in Montgomery-Åsberg Depression Rating Scale (MADRS) total score from baseline. Secondary endpoints included MADRS response, remission rate, and Clinical Global Impression-Improvement score. Safety was comprehensively evaluated, especially regarding antipsychotic adverse events (AEs). RESULTS Of 1194 screened patients, 740 were randomized and 736 (1 mg, n = 248; 2 mg, n = 245; placebo, n = 243) had ≥1 baseline/post-baseline MADRS total score. The LSM (SE) change from baseline in MADRS total score at Week 6 by MMRM analysis was -8.5 (0.47) with brexpiprazole 1 mg, -8.2 (0.47) with brexpiprazole 2 mg, and -6.7 (0.47) with placebo (placebo-adjusted LSM difference [95% CI]: 1 mg, -1.7 [-3.0, -0.4]; P = 0.0089; 2 mg, -1.4 [-2.7, -0.1]; P = 0.0312). Secondary efficacy results supported the primary endpoint. Brexpiprazole was generally well tolerated. CONCLUSION Brexpiprazole 1 mg daily was an appropriate starting dose and both 1 mg and 2 mg daily were effective and well tolerated as adjunctive therapy for Japanese MDD patients not adequately responsive to ADT.
Collapse
Affiliation(s)
- Masaki Kato
- Department of Neuropsychiatry, Kansai Medical University, Osaka, Japan
| | - Masako Shiosakai
- Clinical Development, Headquarters of Clinical Development Otsuka Pharmaceutical Co. Ltd., Tokyo, Japan
| | - Kazuo Kuwahara
- Clinical Development, Headquarters of Clinical Development Otsuka Pharmaceutical Co. Ltd., Tokyo, Japan
| | - Katsuhiro Iba
- Clinical Development, Headquarters of Clinical Development Otsuka Pharmaceutical Co. Ltd., Osaka, Japan
| | - Yuki Shimada
- Clinical Development, Headquarters of Clinical Development Otsuka Pharmaceutical Co. Ltd., Tokyo, Japan
| | - Mizuki Saito
- Clinical Development, Headquarters of Clinical Development Otsuka Pharmaceutical Co. Ltd., Tokyo, Japan
| | - Yuki Isogai
- Medical Affairs, Otsuka Pharmaceutical Co., Ltd., Tokyo, Japan
| | - Daisuke Sekine
- Medical Affairs, Otsuka Pharmaceutical Co., Ltd., Tokyo, Japan
| | - Kazuo Aoki
- Medical Affairs, Otsuka Pharmaceutical Co., Ltd., Tokyo, Japan
| | - Nobuyuki Koga
- Medical Affairs, Otsuka Pharmaceutical Co., Ltd., Tokushima, Japan
| | - Teruhiko Higuchi
- Japan Depression Center, Tokyo, Japan
- National Center of Neurology and Psychiatry, Tokyo, Japan
| |
Collapse
|
3
|
Umabharathi SB, Neetha M, Anilkumar G. Palladium N-Heterocyclic Carbene-Catalyzed Aminations: An Outline. Top Curr Chem (Cham) 2024; 382:3. [PMID: 38265533 DOI: 10.1007/s41061-024-00449-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 01/04/2024] [Indexed: 01/25/2024]
Abstract
Amination reactions play a pivotal role in synthetic organic chemistry, facilitating the generation of nitrogen-containing scaffolds with broad applications in drug synthesis, material production, polymer formation, and the generation of amino acids and peptides. Amination offers the potential to fine tune the properties of natural products and produce functional materials for various applications. Palladium N-heterocyclic carbene (Pd-NHC) emerges as an innovative and highly effective catalyst in this context. Under favorable reaction conditions, this robust and simple catalyst efficiently facilitates the synthesis of a diverse range of compounds with varying complexity and utility. Pd-NHC complexes exhibit significant σ-electron donating potential, enhancing the ease of the oxidative addition process in their mechanistic pathway. Their steric topography further contributes to a rapid reductive elimination. These complexes demonstrate remarkable stability, a result of the strong Pd-ligand bond. The wide variety of Pd-NHC complexes has proven highly efficient in catalyzing reactions across a spectrum of complexities, from simple to intricate. The domain of aminations catalyzed by Pd-NHC has undergone significant diversification, presenting new opportunities, particularly in the realms of material chemistry and natural product synthesis. This review outlines the advancements in Pd-NHC-catalyzed amination reactions, covering literature up to date.
Collapse
Affiliation(s)
- S B Umabharathi
- School of Physical Sciences, Amrita Vishwa Vidyapeetham, Amritapuri Campus, Clappana P. O., Kollam, Kerala, 690525, India
| | - Mohan Neetha
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P. O., Kottayam, Kerala, 686560, India
| | - Gopinathan Anilkumar
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P. O., Kottayam, Kerala, 686560, India.
- Institute for Integrated Programs and Research in Basic Sciences (IIRBS), Mahatma Gandhi University, Priyadarsini Hills P. O., Kottayam, Kerala, 686560, India.
- Advanced Molecular Materials Research Center (AMMRC), Mahatma Gandhi University, Priyadarsini Hills P. O., Kottayam, Kerala, 686560, India.
| |
Collapse
|
4
|
Li T, Liu X, Long X, Li Y, Xiang J, Lv Y, Zhao X, Shi S, Chen W. Brexpiprazole suppresses cell proliferation and de novo lipogenesis through AMPK/SREBP1 pathway in colorectal cancer. ENVIRONMENTAL TOXICOLOGY 2023; 38:2352-2360. [PMID: 37347510 DOI: 10.1002/tox.23871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 05/18/2023] [Accepted: 06/11/2023] [Indexed: 06/23/2023]
Abstract
OBJECTIVE In the present study, we investigated the role of brexpiprazole on cell proliferation and lipogenesis in colorectal cancer (CRC) and its molecular mechanism. METHODS The effect of brexpiprazole on CRC cell proliferation was determined by CCK-8, EdU assay, cell clone formation. The flow cytometry was evaluated cell cycle. Differential expression genes (DEGs) were identified by RNA-seq assay after treating HCT116 cells with or without 20 μM brexpiprazole for 24 h. Then, the top 120 DEGs were analyzed by GO and KEGG enrichment analysis. After that, Oil red O staining and the levels of total cholestenone and triglyceride were measured to assess lipogenesis capacity in CRC cells. The related molecules of cell proliferation, lipogenic and AMPK/SREBP1 signal pathways were measured by q-PCR, western blot and immunohistochemical staining. RESULTS Brexpiprazole remarkably suppressed cell proliferation, lipogenesis, and induced cell cycle arrest in CRC. The underlying mechanisms probably involved the suppression of SREBP1 and the stimulation of AMPK. CONCLUSION Brexpiprazole inhibited cell proliferation and de novo lipogenesis through AMPK/SREBP1 pathway in CRC.
Collapse
Affiliation(s)
- Ting Li
- Institute of Basic Medical and Forensic Medicine, North Sichuan Medical College, Nanchong, China
| | - Xiaojie Liu
- Institute of Basic Medical and Forensic Medicine, North Sichuan Medical College, Nanchong, China
| | - Xiaoyi Long
- Institute of Basic Medical and Forensic Medicine, North Sichuan Medical College, Nanchong, China
| | - Yangyou Li
- Animal Experimental Center, North Sichuan Medical College, Nanchong, China
| | - Jin Xiang
- School of Clinical Medicine, North Sichuan Medical College, Nanchong, China
| | - Yuanxia Lv
- School of Pharmacy, North Sichuan Medical College, Nanchong, China
| | - Xiaoyang Zhao
- Institute of Basic Medical and Forensic Medicine, North Sichuan Medical College, Nanchong, China
| | - Shaoqing Shi
- Scientific Research Laboratory Center, First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Wei Chen
- Institute of Basic Medical and Forensic Medicine, North Sichuan Medical College, Nanchong, China
| |
Collapse
|
5
|
Efficacy of Serotonin and Dopamine Activity Modulators in the Treatment of Negative Symptoms in Schizophrenia: A Rapid Review. Biomedicines 2023; 11:biomedicines11030921. [PMID: 36979900 PMCID: PMC10046337 DOI: 10.3390/biomedicines11030921] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 03/10/2023] [Accepted: 03/13/2023] [Indexed: 03/19/2023] Open
Abstract
Schizophrenia is among the fifteen most disabling diseases worldwide. Negative symptoms (NS) are highly prevalent in schizophrenia, negatively affect the functional outcome of the disorder, and their treatment is difficult and rarely specifically investigated. Serotonin-dopamine activity modulators (SDAMs), of which aripiprazole, cariprazine, brexpiprazole, and lumateperone were approved for schizophrenia treatment, represent a possible therapy to reduce NS. The aim of this rapid review is to summarize the evidence on this topic to make it readily available for psychiatrists treating NS and for further research. We searched the PubMed database for original studies using SDAM, aripiprazole, cariprazine, brexpiprazole, lumateperone, schizophrenia, and NS as keywords. We included four mega-analyses, eight meta-analyses, two post hoc analyses, and 20 clinical trials. Aripiprazole, cariprazine, and brexpiprazole were more effective than placebo in reducing NS. Only six studies compared SDAMs with other classes of antipsychotics, demonstrating a superiority in the treatment of NS mainly for cariprazine. The lack of specific research and various methodological issues, related to the study population and the assessment of NS, may have led to these partial results. Here, we highlight the need to conduct new methodologically robust investigations with head-to-head treatment comparisons and long-term observational studies on homogeneous groups of patients evaluating persistent NS with first- and second-generation scales, namely the Brief Negative Symptom Scale and the Clinical Assessment Interview for Negative Symptoms. This rapid review can expand research on NS therapeutic strategies in schizophrenia, which is fundamental for the long-term improvement of patients’ quality of life.
Collapse
|
6
|
Siwek M, Wojtasik-Bakalarz K, Krupa AJ, Chrobak AA. Brexpiprazole—Pharmacologic Properties and Use in Schizophrenia and Mood Disorders. Brain Sci 2023; 13:brainsci13030397. [PMID: 36979208 PMCID: PMC10046771 DOI: 10.3390/brainsci13030397] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 02/18/2023] [Accepted: 02/23/2023] [Indexed: 03/02/2023] Open
Abstract
In 2002, the first III generation antipsychotic drug was registered—aripiprazole. Its partial dopaminergic agonism underlies its unique mechanism of action and the potentially beneficial influence on the positive, negative, or cognitive symptoms. Due to its relatively high intrinsic activity, the drug could often cause agitation, anxiety, or akathisia. For this reason, efforts were made to develop a drug which would retain the positive favorable actions of aripiprazole but present a more advantageous clinical profile. This turned out to be brexpiprazole, which was registered in 2015. Its pharmacodynamic and pharmacokinetic profile (similarly to the other most recent antipsychotics, i.e., lurasidone or cariprazine) shows promise of increasing the effectiveness of schizophrenia treatment in the dimensions in which the previous antipsychotics were not sufficiently effective, including negative, depressive, or cognitive symptoms. Like other new antipsychotics, it can also be useful in the treatment of mood disorders, for instance drug-resistant depression. Previous reviews focused on the use of brexpiprazole in specific diagnostic groups. The aim of this article is to provide the readers with an overview of data on the mechanism of action, clinical effectiveness in all studied diagnostic groups, as well as potential drug–food interactions, and the safety of brexpiprazole.
Collapse
Affiliation(s)
- Marcin Siwek
- Department of Affective Disorders, Jagiellonian University Medical College, Kopernika St. 21a, 31-501 Cracow, Poland
| | - Krzysztof Wojtasik-Bakalarz
- Department of Affective Disorders, Jagiellonian University Medical College, Kopernika St. 21a, 31-501 Cracow, Poland
| | - Anna Julia Krupa
- Department of Psychiatry, Jagiellonian University Medical College, Kopernika St. 21a, 31-501 Cracow, Poland
| | - Adrian Andrzej Chrobak
- Department of Adult Psychiatry, Jagiellonian University Medical College, Kopernika St. 21a, 31-501 Cracow, Poland
- Correspondence:
| |
Collapse
|
7
|
Phalguni A, McCool R, Wood H, Sanderson A, Rydevik G, Franklin B, James D. Systematic literature review and network meta-analysis of lurasidone, brexpiprazole and cariprazine for schizophrenia. Int Clin Psychopharmacol 2023; 38:45-56. [PMID: 35916575 DOI: 10.1097/yic.0000000000000427] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A systematic review was undertaken to identify randomized controlled trials (RCTs) comparing the efficacy and safety of lurasidone, brexpiprazole and cariprazine (selected because of a shared safety profile) with each other or placebo in adult patients with schizophrenia. Key outcomes included: Positive and Negative Syndrome Scales (PANSS), Clinical Global Impression-Severity (CGI-S) scores and cardiovascular and metabolic parameters. A feasibility assessment evaluated the trials' suitability for inclusion in a Bayesian network meta-analysis (NMA). Random effects models were used. In total, 1138 records were identified and 19 RCTs contributed to the NMA. Lurasidone doses of 160 mg performed best in terms of change in PANSS and CGI-S scores at 6 weeks, with stronger evidence when compared with brexpiprazole than cariprazine. The safety outcomes were variable; for all treatments, the 95% credible intervals usually contained 'no difference'. Active treatments were associated with lower odds of discontinuation due to any cause, and higher odds of experiencing any adverse event. Lurasidone was comparable to brexpiprazole and cariprazine for efficacy and safety outcomes assessed at 6 weeks, with the 160 mg dose being superior for the change in PANSS and CGI-S outcomes. The lurasidone results were relatively consistent across doses compared with brexpiprazole and cariprazine.
Collapse
Affiliation(s)
- Angaja Phalguni
- York Health Economics Consortium, Enterprise House, University of York, Heslington, York
| | - Rachael McCool
- York Health Economics Consortium, Enterprise House, University of York, Heslington, York
| | - Hannah Wood
- York Health Economics Consortium, Enterprise House, University of York, Heslington, York
| | - Alice Sanderson
- York Health Economics Consortium, Enterprise House, University of York, Heslington, York
| | | | | | | |
Collapse
|
8
|
New Atypical Antipsychotics in the Treatment of Schizophrenia and Depression. Int J Mol Sci 2022; 23:ijms231810624. [PMID: 36142523 PMCID: PMC9500595 DOI: 10.3390/ijms231810624] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 09/09/2022] [Accepted: 09/09/2022] [Indexed: 11/25/2022] Open
Abstract
Schizophrenia and depression are heterogeneous disorders. The complex pathomechanism of the diseases imply that medication responses vary across patients. Many psychotropic drugs are available but achieving optimal therapeutic effect can be challenging. The evidence correlates well with clinical observations, suggesting that new atypical antipsychotic drugs are effective against negative and cognitive symptoms of schizophrenia, as well as against affective symptoms observed in depression. The purpose of this review presents the background and evidence for the use of the new second/third-generation antipsychotics (aripiprazole, cariprazine, lurasidone, asenapine, brexpiprazole, lumateperone, pimavanserin) in treatment of schizophrenia and depression. We have first provided a brief overview of the major neurobiological underpinnings of schizophrenia and depression. We then shortly discuss efficacy, safety and limitations of ongoing pharmacotherapy used in depression and schizophrenia. Mainly, we have focused this review on the therapeutic potential of new atypical antipsychotic drugs—currently existing—to be effective in psychotic, as well as in affective disorders.
Collapse
|
9
|
Hishimoto A, Yasui-Furukori N, Sekine D, Matsukawa M, Yamada S. Treatment Discontinuation Among Patients with Schizophrenia Treated with Brexpiprazole and Other Oral Atypical Antipsychotics in Japan: A Retrospective Observational Study. Adv Ther 2022; 39:4299-4314. [PMID: 35904721 PMCID: PMC9402511 DOI: 10.1007/s12325-022-02252-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 06/29/2022] [Indexed: 12/04/2022]
Abstract
Introduction Treatment continuation is essential for relapse prevention in patients with schizophrenia. The aim of this exploratory study was to compare the time to treatment discontinuation between patients with schizophrenia prescribed brexpiprazole (BRX group) and those prescribed other atypical antipsychotics (OAA group) in clinical settings in Japan using health insurance claims data. Methods De-identified data of working individuals with schizophrenia aged < 75 years and their dependents were assessed from April 2017 to May 2020 using a nationwide claims database. Cox proportional hazards models, adjusted for baseline patient variables, were used to compare the time to treatment discontinuation (primary outcome) for 180 days between BRX and OAA groups and to estimate the hazard ratio (HR) with 95% confidence interval (CI). The cumulative treatment continuation rates at 180 days were also estimated. Sensitivity and subgroup analyses were conducted for the primary outcome. Results The analysis included 978 and 4898 patients in the BRX and OAA groups, respectively. Patients in the BRX group were significantly less likely to discontinue treatment than those in the OAA group (HR 0.86, 95% CI 0.78–0.95; p = 0.0024). The cumulative treatment continuation rates were higher in the BRX group (45.9%, 95% CI 42.5–49.2]) than in the OAA group (39.5%, 95% CI 38.1–41.0; log-rank test, p < 0.0001). Based on patients matched by propensity score, the BRX group was significantly less likely to discontinue treatment than the OAA group (log-rank test, p = 0.0466). Similar results were obtained in sensitivity and subgroup analyses. Conclusion This real-world study showed that patients in the BRX group were less likely to discontinue treatments than those in the OAA group. These findings suggest that BRX may contribute to treatment continuation among patients with schizophrenia. Trial Registration University hospital Medical Information Network (UMIN) Clinical Trials Registry: UMIN000044682. Supplementary Information The online version contains supplementary material available at 10.1007/s12325-022-02252-9.
Collapse
Affiliation(s)
- Akitoyo Hishimoto
- Department of Psychiatry, Yokohama City University Graduate School of Medicine, Kanagawa, Japan
| | - Norio Yasui-Furukori
- Department of Psychiatry, Dokkyo Medical University, School of Medicine, Tochigi, Japan
| | - Daisuke Sekine
- Medical Affairs, Otsuka Pharmaceutical Co., Ltd., Shinagawa Grand Central Tower, 2-16-4 Konan, Minato-ku, Tokyo, 108-8242, Japan.
| | - Miyuki Matsukawa
- Medical Affairs, Otsuka Pharmaceutical Co., Ltd., Shinagawa Grand Central Tower, 2-16-4 Konan, Minato-ku, Tokyo, 108-8242, Japan
| | - Sakiko Yamada
- Medical Affairs, Otsuka Pharmaceutical Co., Ltd., Shinagawa Grand Central Tower, 2-16-4 Konan, Minato-ku, Tokyo, 108-8242, Japan
| |
Collapse
|
10
|
Risk of Drug-induced Movement Disorders with Newer Antipsychotic Agents. Tremor Other Hyperkinet Mov (N Y) 2022; 12:19. [PMID: 35836971 PMCID: PMC9187243 DOI: 10.5334/tohm.695] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 05/27/2022] [Indexed: 01/19/2023] Open
Abstract
Background: The last decade has seen development of numerous novel antipsychotic drugs with unique mechanisms including long-acting formulations for clinical use. A comparative assessment of these new drugs with each other and previous antipsychotics have not been performed with regards to risk for drug-induced movement disorders (DIMD). Methods: Medline was searched from January 2010 to February 2022 for primary research articles and review articles in English using the search terms “extrapyramidal” and “tardive” with individual drug names of novel antipsychotics. Results: We identified articles describing the risk of DIMD with 6 novel antipsychotics, 4 novel formulations, and 3 experimental antipsychotics. Both short- and long-term data generally showed comparable to lower risk of DIMD with novel antipsychotics and recent long-acting formulations compared to previously marketed antipsychotics. Discussion: Several novel antipsychotics, particularly lumateperone and pimavanserin, show promise in being able to treat psychosis while reducing the risk of DIMD. Long-acting paliperidone may reduce risk of DIMD while other long-acting injectable formulations of SGA have similar risk of DIMD compared to oral formulations. New drug targets for treating psychosis without dopamine blockade also show promise.
Collapse
|
11
|
Wu H, Siafis S, Hamza T, Schneider-Thoma J, Davis JM, Salanti G, Leucht S. Antipsychotic-Induced Weight Gain: Dose-Response Meta-Analysis of Randomized Controlled Trials. Schizophr Bull 2022; 48:643-654. [PMID: 35137229 PMCID: PMC9077426 DOI: 10.1093/schbul/sbac001] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Weight gain is among the most important side-effects of antipsychotics. It is, however, unclear whether it is associated with antipsychotic doses. We aimed to fill this gap with a dose-response meta-analysis. METHODS We searched multiple electronic databases (last update search June 2021) for all fixed-dose studies that investigated 16 second-generation antipsychotics and haloperidol in adults with acute exacerbation of schizophrenia or with negative symptoms. We estimated the dose-response curves by conducting random-effects dose-response meta-analyses. We used the restricted cubic spline to model the dose-response relationship. The primary outcome was mean weight gain in kg from baseline to endpoint, the secondary outcome was the number of patients with clinically important weight gain. FINDINGS Ninety-seven studies with 333 dose arms (36 326 participants) provided data for meta-analyses. Most studies were short-term with median duration of 6 weeks (range 4 to 26 weeks). In patients with acute exacerbation, amisulpride, aripiprazole, brexpiprazole, cariprazine, haloperidol, lumateperone, and lurasidone produced mild weight gain in comparison to placebo (mean difference at any dose≤1 kg), while more significant weight gain was observed by all other drugs. For most drugs, dose-response curves showed an initial dose-related increase in weight which plateaued at higher doses, while for others there was no plateau and some even had bell-shaped curves, meaning less weight gain to be associated with higher doses. INTERPRETATION Second-generation antipsychotics do not only differ in their propensity to produce weight gain, but also in the shapes of their dose-response curves. This information is important for dosing decisions in clinical practice.
Collapse
Affiliation(s)
| | | | - Tasnim Hamza
- Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland
| | - Johannes Schneider-Thoma
- Department of Psychiatry and Psychotherapy, School of Medicine, Technical University of Munich, Munich, Germany
| | - John M Davis
- Psychiatric Institute, University of Illinois at Chicago, Chicago, IL, USA,Maryland Psychiatric Research Center, Baltimore, MD, USA
| | - Georgia Salanti
- Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland
| | - Stefan Leucht
- To whom correspondence should be addressed; tel: +49-89-4140-4249, fax: +49-89-4140-4888, e-mail:
| |
Collapse
|
12
|
Osugo M, Whitehurst T, Shatalina E, Townsend L, O’Brien O, Mak TLA, McCutcheon R, Howes O. Dopamine partial agonists and prodopaminergic drugs for schizophrenia: systematic review and meta-analysis of randomized controlled trials. Neurosci Biobehav Rev 2022; 135:104568. [DOI: 10.1016/j.neubiorev.2022.104568] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/16/2021] [Accepted: 02/02/2022] [Indexed: 10/19/2022]
|
13
|
Lobo MC, Whitehurst TS, Kaar SJ, Howes OD. New and emerging treatments for schizophrenia: a narrative review of their pharmacology, efficacy and side effect profile relative to established antipsychotics. Neurosci Biobehav Rev 2022; 132:324-361. [PMID: 34838528 DOI: 10.1016/j.neubiorev.2021.11.032] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 11/13/2021] [Accepted: 11/21/2021] [Indexed: 01/07/2023]
Abstract
Schizophrenia is associated with substantial unmet needs, highlighting the necessity for new treatments. This narrative review compares the pharmacology, clinical trial data and tolerability of novel medications to representative antipsychotics. Cariprazine, brexpiprazole and brilaroxazine are partial dopamine agonists effective in acute relapse. Lumateperone (serotonin and dopamine receptor antagonist) additionally benefits asocial and depressive symptoms. F17464 (D3 antagonist and 5-HT1A partial agonist) has one positive phase II study. Lu AF35700 (dopamine and serotonin receptor antagonist) was tested in treatment-resistance with no positive results. Pimavanserin, roluperidone, ulotaront and xanomeline do not act directly on the D2 receptor at clinical doses. Initial studies indicate pimavanserin and roluperidone improve negative symptoms. Ulotaront and xanomeline showed efficacy for positive and negative symptoms of schizophrenia in phase II trials. BI 409306, BI 425809 and MK-8189 target glutamatergic dysfunction in schizophrenia, though of these only BI 425809 showed efficacy. These medications largely have favourable cardiometabolic side-effect profiles. Overall, the novel pharmacology, clinical trial and tolerability data indicate these compounds are promising new additions to the therapeutic arsenal.
Collapse
Affiliation(s)
- Maria C Lobo
- Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK; MRC London Institute of Medical Sciences, Hammersmith Hospital, London, UK; Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, UK; South London and Maudsley NHS Foundation Trust, Maudsley Hospital, London, UK.
| | - Thomas S Whitehurst
- MRC London Institute of Medical Sciences, Hammersmith Hospital, London, UK; Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, UK.
| | - Stephen J Kaar
- Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK; South London and Maudsley NHS Foundation Trust, Maudsley Hospital, London, UK.
| | - Oliver D Howes
- Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK; Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, UK; South London and Maudsley NHS Foundation Trust, Maudsley Hospital, London, UK; H. Lundbeck UK, Ottiliavej 9, 2500, Valby, Denmark.
| |
Collapse
|
14
|
Zhao M, Qin B, Mao Y, Wang H, Wang A, Wang C. Efficacy and Safety of Low-Dose Brexpiprazole for Acute Schizophrenia: Meta-Analysis of Randomized Placebo-Controlled Trials. Neuropsychiatr Dis Treat 2022; 18:1705-1713. [PMID: 35979228 PMCID: PMC9377399 DOI: 10.2147/ndt.s374577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 08/07/2022] [Indexed: 11/23/2022] Open
Abstract
PURPOSE The purpose of this meta-analysis was to compare the efficacy and safety profile of low-dose brexpiprazole (<2 mg/d) compared to placebo and standard-dose brexpiprazole (2-4 mg/d). PATIENTS AND METHODS We identified relevant studies pertaining to the specific purpose of our meta-analysis by searching PubMed, Web of Science, Embase, Cochrane library, and PsycINFO using the search terms "schizophrenia" or "schizophrenic" AND "brexpiprazole" or "REXULTI". We systematically reviewed all randomized controlled trials (RCTs) comparing low-dose brexpiprazole with placebo. Primary efficacy outcomes were the PANSS total score change and response rate. Primary safety outcomes were total treatment discontinuation rate, and total serious adverse events (SAEs). Risk ratios (RR) and standardized mean differences (SMDs) were pooled implementing a random effect model. RESULTS Four RCTs (2178 patients) were included for effect assessment of low-dose brexpiprazole treatment on the patients with acute schizophrenia. Low-dose brexpiprazole was not superior to placebo (SMD = -0.11, 95% CI = -0.23, 0.02, P = 0.10, I2 = 0%), and significantly inferior to standard-dose brexpiprazole (SMD = 0.15, 95% CI = 0.03, 0.26, P = 0.01, I2 = 0%) for PANSS total score change. Low-dose brexpiprazole did not result in significant difference for response rate when compared to placebo and standard-dose brexpiprazole (RR = 1.16, 95% CI = 0.95, 1.41, P = 0.14, I2 = 25%; RR = 0.92, 95% CI = 0.76, 1.12, P = 0.40, I2 = 38%, respectively). For ratio of total discontinuation, low-dose brexpiprazole did not exhibit significant difference when compared to placebo (RR = 0.95, 95% CI = 0.81, 1.11, P = 0.53, I2 = 0%) and standard-dose brexpiprazole group (RR = 1.11, 95% CI = 0.95, 1.29, P = 0.19, I2 = 0%). Total SAEs in low-dose brexpiprazole group did not differ significantly from placebo and standard-dose brexpiprazole group (RR = 0.96, 95% CI = 0.52, 1.80, P = 0.90, I2 = 0%; RR = 1.29, 95% CI = 0.65, 2.57, P = 0.47, I2 = 26%, respectively). CONCLUSION The results indicated that low-dose brexpiprazole may be not superior for improving the efficacy and safety for acute schizophrenia compared to placebo and standard-dose brexpiprazole, and may cause additional risk of increasing body weight. Therefore, using low-dose brexpiprazole in acute schizophrenia patients may be not recommended.
Collapse
Affiliation(s)
- Mingjun Zhao
- Department of Pharmacy, The Second Affiliated Hospital of Xinxiang Medical University (Henan Mental Hospital), Xinxiang, Henan, People's Republic of China
| | - Bin Qin
- Department of Neurology, Liuzhou General Hospital, Liuzhou, Guangxi, People's Republic of China
| | - Yage Mao
- Department of Pharmacy, Maternal and Child Health Care Hospital of Xinxiang City, Xinxiang, Henan, People's Republic of China
| | - Hailing Wang
- Department of Pharmacy, The Second Affiliated Hospital of Xinxiang Medical University (Henan Mental Hospital), Xinxiang, Henan, People's Republic of China
| | - Aiqin Wang
- Department of Pharmacy, The Second Affiliated Hospital of Xinxiang Medical University (Henan Mental Hospital), Xinxiang, Henan, People's Republic of China
| | - Chuansheng Wang
- Department of Psychiatry, The Second Affiliated Hospital of Xinxiang Medical University (Henan Mental Hospital), Xinxiang, Henan, People's Republic of China
| |
Collapse
|
15
|
Abstract
PURPOSE OF REVIEW Over the last ten years, the treatment of psychosis has seen a near explosion of creative development in both novel agents and new delivery modalities. The current review summarizes these developments over the past decade (2011-2020). We performed a systematic review utilizing PubMed and PsychInfo with the aim of identifying all the RCT and related analyses in adults with psychosis (schizophrenia and mania). RECENT FINDINGS We identified 11 significant developments: the introduction of new antipsychotics cariprazine, brexpiprazole, lumateperone, and pimavanserin; introduction of new delivery methods: subcutaneous long-acting risperidone, aripiprazole lauroxil, transdermal asenapine, and inhaled loxapine; and the introduction of new approaches such as olanzapine/samidorphan for olanzapine-associated weight gain, examination of the TAAR1 agonist SEP 363,856 as a test of concept, and the combination of Xanomeline/Trospium, an M1 and M4 muscarinic receptor agonist in conjunction with a peripheral anticholinergic. Last decade has seen a tremendous development in second-generation antipsychotics which provides unprecedented treatment options for clinicians in treating psychosis.
Collapse
|
16
|
Nakagami Y, Hayakawa K, Horinouchi T, Pereira-Sanchez V, Tan MPJ, Park SC, Park YC, Moon SW, Choi TY, Avasthi A, Grover S, Kallivayalil RA, Rai Y, Shalbafan M, Chongsuksiri P, Udomratn P, Kathriarachchi ST, Xiang YT, Sim K, Javed A, Chong MY, Tan CH, Lin SK, Inada T, Murai T, Kanba S, Sartorius N, Shinfuku N, Kato TA. A Call for a Rational Polypharmacy Policy: International Insights From Psychiatrists. Psychiatry Investig 2021; 18:1058-1067. [PMID: 34732030 PMCID: PMC8600221 DOI: 10.30773/pi.2021.0169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 07/02/2021] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVE Recently, rational polypharmacy approaches have been proposed, regardless of the lower risk and cost of monotherapy. Considering monotherapy as first-line treatment and polypharmacy as rational treatment, a balanced attitude toward polypharmacy is recommended. However, the high prevalence of polypharmacy led the Japanese government to establish a polypharmacy reduction policy. Based on this, the association between the policy and psychiatrists' attitude toward polypharmacy has been under debate. METHODS We developed an original questionnaire about Psychiatrists' attitudes toward polypharmacy (PAP). We compared the PAP scores with the treatment decision-making in clinical case vignettes. Multiple regression analyses were performed to quantify associations of explanatory variables including policy factors and PAP scores. The anonymous questionnaires were administered to psychiatrists worldwide. RESULTS The study included 347 psychiatrists from 34 countries. Decision-making toward polypharmacy was associated with high PAP scores. Multiple regression analysis revealed that low PAP scores were associated with the policy factor (β=-0.20, p=0.004). The culture in Korea was associated with high PAP scores (β=0.34, p<0.001), whereas the culture in India and Nepal were associated with low scores (β=-0.15, p=0.01, and β=-0.17, p=0.006, respectively). CONCLUSION Policy on polypharmacy may influence psychiatrists' decision-making. Thus, policies considering rational polypharmacy should be established.
Collapse
Affiliation(s)
- Yukako Nakagami
- Department of Psychiatry, Kyoto University Graduate School of Medicine, Kyoto, Japan.,Department of Preventive Services, School of Public Health/Medicine and Medical Science, Kyoto University, Kyoto, Japan
| | - Kohei Hayakawa
- Department of Neuropsychiatry, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Toru Horinouchi
- Department of Neuroscience, Trafford Centre for Medical Research, Brighton and Sussex Medical School, University of Sussex, Brighton, UK
| | - Victor Pereira-Sanchez
- Department of Child and Adolescent Psychiatry, NYU Grossman School of Medicine, New York, USA
| | - Marcus P J Tan
- Department of Child and Adolescent Psychiatry, Institute of Psychiatry, Psychology, and Neuroscience, King's College London, London, UK
| | - Seon-Cheol Park
- Department of Psychiatry, Hanyang University Guri Hospital, Guri, Republic of Korea
| | - Yong Chon Park
- Department of Psychiatry, Hanyang University Guri Hospital, Guri, Republic of Korea
| | - Seok Woo Moon
- Department of Psychiatry, Konkuk University Chungju Hospital, Institute of Medical Science, Chungju, Republic of Korea
| | - Tae Young Choi
- Department of Psychiatry, Catholic University of Daegu School of Medicine, Daegu, Republic of Korea
| | - Ajit Avasthi
- Department of Psychiatry, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Sandeep Grover
- Department of Psychiatry, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | | | - Yugesh Rai
- Essex Partnership University Trust, Colchester, UK
| | | | | | - Pichet Udomratn
- Department of Psychiatry, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Samudra T Kathriarachchi
- Department of Psychiatry, Faculty of Medical Sciences, University of Sri Jayewardenepura, Sri Lanka
| | - Yu-Tao Xiang
- Unit of Psychiatry, Department of Public Health and Medicinal Administration, University of Macau, Macao SAR, China
| | - Kang Sim
- Institute of Mental Health, Buangkok Green Medical Park, Singapore
| | - Afzal Javed
- Pakistan Psychiatric Research Centre, Fountain House, Lahore, Pakistan
| | - Mian-Yoon Chong
- Department of Psychiatry, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung & Chang Gung University School of Medicine, Taoyuan, Taiwan
| | - Chay-Hoon Tan
- Department of Pharmacology, National University of Singapore, Singapore
| | - Shih-Ku Lin
- Department of Psychiatry, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Toshiya Inada
- Department of Psychiatry, Nagoya University, Graduate School of Medicine, Nagoya, Japan
| | - Toshiya Murai
- Department of Psychiatry, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Shigenobu Kanba
- Department of Neuropsychiatry, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Norman Sartorius
- Association for the Improvement of Mental Health Programmes, Geneva, Switzerland
| | - Naotaka Shinfuku
- Department of Social Welfare, School of Human Sciences, Seinan Gakuin University, Fukuoka, Japan
| | - Takahiro A Kato
- Department of Neuropsychiatry, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| |
Collapse
|
17
|
Fernando R, Gan L, Xiao J, Yun Y. Hyperprolactinemia induced by brexpiprazole in patients with schizophrenia: A case report. Psychiatry Res 2021; 305:114215. [PMID: 34563975 DOI: 10.1016/j.psychres.2021.114215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 09/17/2021] [Accepted: 09/18/2021] [Indexed: 10/20/2022]
Affiliation(s)
- Roshan Fernando
- Northern Area Mental Health Services, Royal Melbourne Hospital, Epping, Victoria, Australia
| | - Lucy Gan
- Department of Psychiatry, Northern Health, Epping, Victoria, Australia
| | - Junhua Xiao
- School of Health Sciences, Swinburne University of Technology, Victoria, Australia; School of Allied Health, La Trobe University, Victoria, Australia
| | - Yang Yun
- Northern Area Mental Health Services, Royal Melbourne Hospital, Epping, Victoria, Australia.
| |
Collapse
|
18
|
Neumeier MS, Homan S, Vetter S, Seifritz E, Kane JM, Huhn M, Leucht S, Homan P. Examining Side Effect Variability of Antipsychotic Treatment in Schizophrenia Spectrum Disorders: A Meta-analysis of Variance. Schizophr Bull 2021; 47:1601-1610. [PMID: 34374418 PMCID: PMC8530397 DOI: 10.1093/schbul/sbab078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Side effects of antipsychotic drugs play a key role in nonadherence of treatment in schizophrenia spectrum disorders (SSD). While clinical observations suggest that side effect variability between patients may be considerable, statistical evidence is required to confirm this. Here, we hypothesized to find larger side effect variability under treatment compared with control. We included double-blind, placebo-controlled, randomized controlled trials (RCTs) of adults with a diagnosis of SSD treated with 1 out of 14 antipsychotics. Standard deviations of the pre-post treatment differences of weight gain, prolactin levels, and corrected QT (QTc) times were extracted. The outcome measure was the variability ratio of treatment to control for individual antipsychotic drugs and the overall variability ratio of treatment to control across RCTs. Individual variability ratios were weighted by the inverse-variance method and entered into a random-effects model. We included N = 16 578 patients for weight gain, N = 16 633 patients for prolactin levels, and N = 10 384 patients for QTc time. Variability ratios (VR) were significantly increased for weight gain (VR = 1.08; 95% CI: 1.02-1.14; P = .004) and prolactin levels (VR = 1.38; 95% CI: 1.17-1.62; P < .001) but did not reach significance for QTc time (VR = 1.05; 95% CI: 0.98-1.12; P = 0.135). We found marked differences between individual antipsychotics and increased variability in side effects in patients under treatment with antipsychotics suggesting that subgroups of patients or individual patients may benefit from treatment allocation through stratified or personalized medicine.
Collapse
Affiliation(s)
| | - Stephanie Homan
- University Hospital of Psychiatry Zurich, Zurich, Switzerland
| | - Stefan Vetter
- University Hospital of Psychiatry Zurich, Zurich, Switzerland
| | - Erich Seifritz
- University Hospital of Psychiatry Zurich, Zurich, Switzerland
| | - John M Kane
- Center for Psychiatric Neuroscience, Feinstein Institute for Medical Research, Manhasset, NY, USA
- Division of Psychiatry Research, Zucker Hillside Hospital, Northwell Health, New York, NY, USA
- Department of Psychiatry, Zucker School of Medicine at Northwell/Hofstra, Hempstead, NY, USA
| | - Maximilian Huhn
- Department of Psychiatry and Psychotherapy, Technical University of Munich, School of Medicine, Munich, Germany
| | - Stefan Leucht
- Department of Psychiatry and Psychotherapy, Technical University of Munich, School of Medicine, Munich, Germany
| | - Philipp Homan
- University Hospital of Psychiatry Zurich, Zurich, Switzerland
- Center for Psychiatric Neuroscience, Feinstein Institute for Medical Research, Manhasset, NY, USA
- Division of Psychiatry Research, Zucker Hillside Hospital, Northwell Health, New York, NY, USA
- Department of Psychiatry, Zucker School of Medicine at Northwell/Hofstra, Hempstead, NY, USA
| |
Collapse
|
19
|
Antipsychotics for negative and positive symptoms of schizophrenia: dose-response meta-analysis of randomized controlled acute phase trials. NPJ SCHIZOPHRENIA 2021; 7:43. [PMID: 34518532 PMCID: PMC8438046 DOI: 10.1038/s41537-021-00171-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Accepted: 08/06/2021] [Indexed: 02/08/2023]
Abstract
Determining the optimal antipsychotic target dose in acute phase treatment is of high clinical relevance. The effect of antipsychotics on negative symptoms should be taken into account because patients will often continue on the treatment received in the acute phase. Therefore, we conducted a formal dose-response meta-analysis of negative symptoms and positive symptoms based on a systematic review of fixed-dose randomized controlled trials (RCTs) that examined the effectiveness of antipsychotics for the acute exacerbation of schizophrenia. Forty RCTs included a total of 15,689 patients. The 95% effective doses per day for the 13 antipsychotics included and 3 long acting were mostly different for negative and positive symptoms: amisulpride (481 mg, 690.6 mg); aripiprazole (11.9 mg, 11 mg); asenapine (7.61 mg, 5.66 mg); brexpiprazole (2.1 mg, 4 mg); cariprazine (4 mg, 6.51 mg); haloperidol (6.34 mg, 7.36 mg); lurasidone (58.2 mg, 86.3 mg); olanzapine (15.5 mg, 9.52 mg); olanzapine long-acting injection (15.7 mg, 13.5 mg); paliperidone (7.2 mg, 7 mg); paliperidone long-acting injection (7.5 mg, 5.9 mg); quetiapine instant-release (264.2 mg, 316.5 mg); quetiapine extended-release (774 mg, 707.2 mg); risperidone (7.5 mg, 7.7 mg); risperidone long-acting injection (5.13 mg, 6.7 mg); sertindole (13.5 mg, 16.3 mg); and ziprasidone (71.6 mg, 152.6 mg). The shape of the dose-response curves varied across different drugs with most drugs showing a plateau at higher doses. Most dose-response curves suggested that the near-maximum effective doses could be in the lower-to-medium range of the licensed dose. Additional RCTs are necessary to establish the optimal dose.
Collapse
|
20
|
Ishigooka J, Inada K, Niidome K, Aoki K, Kojima Y, Iwashita S, Yamada S. Safety of switching to brexpiprazole in Japanese patients with schizophrenia: A post-hoc analysis of a long-term open-label study. Hum Psychopharmacol 2021; 36:e2777. [PMID: 33496984 PMCID: PMC8365679 DOI: 10.1002/hup.2777] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 12/23/2020] [Accepted: 01/05/2021] [Indexed: 12/17/2022]
Abstract
OBJECTIVES To determine the long-term safety of switching to brexpiprazole from aripiprazole or non-aripiprazole dopamine antagonists. METHODS Post-hoc analysis of 56-week study of Japanese outpatients with schizophrenia switched to brexpiprazole 2 mg/day over 4-week switching period with further titration (1-4 mg/day) allowed during the 52-week, open-label period. Major assessment items: total/low-density lipoprotein (LDL)-/high-density lipoprotein (HDL)-cholesterol, triglycerides, blood glucose, body weight and prolactin. Secondary evaluations were related to efficacy, treatment emergent adverse events (TEAEs), extrapyramidal symptoms, and corrected QT interval (QTc). RESULTS 84/186 (45.2%) patients (aripiprazole, 32.9%; non-aripiprazole, 54.8%) discontinued treatment over 56 weeks mainly because of consent withdrawal/adverse events. From baseline to Week 56, both groups showed minimal mean changes in total/LDL-/HDL-cholesterol, triglycerides, and glucose levels and a slight increase in mean (SD) body weight (aripiprazole, 1.1 [4.4] kg; non-aripiprazole, 0.4 [4.6] kg). Mean prolactin levels increased slightly in the aripiprazole group, but decreased in the non-aripiprazole group. Symptom severity scores decreased similarly in both groups. TEAEs occurred in 161/186 (86.6%) patients (aripiprazole, 84.1% [serious, 9.8%]; non-aripiprazole, 88.5% [serious, 14.4%]). Few changes occurred in extrapyramidal symptom scales or QTc interval. CONCLUSIONS Switching to brexpiprazole is associated with a low long-term risk for metabolic abnormalities (including weight gain), hyperprolactinemia, extrapyramidal symptoms and QTc changes and minimal changes in psychiatric symptoms.
Collapse
Affiliation(s)
| | - Ken Inada
- Department of PsychiatryTokyo Women's Medical University School of MedicineTokyoJapan
| | - Kazunari Niidome
- Department of Medical AffairsOtsuka Pharmaceutical Co., Ltd.TokyoJapan
| | - Kazuo Aoki
- Department of Medical AffairsOtsuka Pharmaceutical Co., Ltd.TokyoJapan
| | - Yoshitsugu Kojima
- Department of Medical AffairsOtsuka Pharmaceutical Co., Ltd.TokyoJapan
| | - Shuichi Iwashita
- Headquarters of Clinical DevelopmentOtsuka Pharmaceutical Co., Ltd.OsakaJapan
| | - Sakiko Yamada
- Department of Medical AffairsOtsuka Pharmaceutical Co., Ltd.TokyoJapan
| |
Collapse
|
21
|
Kishi T, Ikuta T, Sakuma K, Okuya M, Iwata N. Efficacy and safety of antipsychotic treatments for schizophrenia: A systematic review and network meta-analysis of randomized trials in Japan. J Psychiatr Res 2021; 138:444-452. [PMID: 33964682 DOI: 10.1016/j.jpsychires.2021.04.032] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/12/2021] [Accepted: 04/25/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND We examined the efficacy and safety of using antipsychotic medication for schizophrenia using only randomized trials of antipsychotic for schizophrenia conducted in Japan to avoid the biological and environmental heterogeneities caused by pooling data from various races and ethnicities. METHODS We searched for eligible studies on Embase, PubMed, and CENTRAL. Primary outcomes were improvement in Positive and Negative Syndrome Scale total score (PANSS-T) and all-cause discontinuation. Other outcomes were improvement in PANSS subscale scores, discontinuation due to adverse events or inefficacy, and the incidence of 16 adverse events. RESULTS We calculated mean difference or risk ratios and 95% credible intervals. We identified 34 RCTs (6798 patients; mean study duration, 9.0 ± 4.24 weeks; proportion of male patients, 53.7%; mean age, 43.3 years). Besides placebo, studies included aripiprazole, asenapine, blonanserin, blonanserin-patch, brexpiprazole, clocapramine (no PANSS data), clozapine (no PANSS data), haloperidol, lurasidone, mosapramine, olanzapine, paliperidone, perospirone, quetiapine, and risperidone. Efficacy and safety profiles differed for antipsychotics used with schizophrenia in Japanese patients. All active treatments other than haloperidol and quetiapine outperformed placebo to improve PANSS-T. Asenapine, olanzapine, paliperidone, and risperidone outperformed placebo for all-cause discontinuation. Asenapine, blonanserin, blonanserin-patch, haloperidol, lurasidone, mosapramine, olanzapine, paliperidone, and risperidone outperformed placebo to improve PANSS positive subscale scores. Aripiprazole, asenapine, blonanserin, blonanserin-patch, brexpiprazole, lurasidone, olanzapine, paliperidone, perospirone, and risperidone outperformed placebo to improve PANSS negative subscale scores. The confidence in evidence of most outcomes was low or very low. CONCLUSION Our results are similar to those of previous network meta-analysis involving various races and ethnicities.
Collapse
Affiliation(s)
- Taro Kishi
- Department of Psychiatry, Fujita Health University School of Medicine, Toyoake, Aichi, 470-1192, Japan.
| | - Toshikazu Ikuta
- Department of Communication Sciences and Disorders, School of Applied Sciences, University of Mississippi, University, MS, 38677, USA
| | - Kenji Sakuma
- Department of Psychiatry, Fujita Health University School of Medicine, Toyoake, Aichi, 470-1192, Japan
| | - Makoto Okuya
- Department of Psychiatry, Fujita Health University School of Medicine, Toyoake, Aichi, 470-1192, Japan
| | - Nakao Iwata
- Department of Psychiatry, Fujita Health University School of Medicine, Toyoake, Aichi, 470-1192, Japan
| |
Collapse
|
22
|
Boczek T, Mackiewicz J, Sobolczyk M, Wawrzyniak J, Lisek M, Ferenc B, Guo F, Zylinska L. The Role of G Protein-Coupled Receptors (GPCRs) and Calcium Signaling in Schizophrenia. Focus on GPCRs Activated by Neurotransmitters and Chemokines. Cells 2021; 10:cells10051228. [PMID: 34067760 PMCID: PMC8155952 DOI: 10.3390/cells10051228] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/12/2021] [Accepted: 05/14/2021] [Indexed: 01/13/2023] Open
Abstract
Schizophrenia is a common debilitating disease characterized by continuous or relapsing episodes of psychosis. Although the molecular mechanisms underlying this psychiatric illness remain incompletely understood, a growing body of clinical, pharmacological, and genetic evidence suggests that G protein-coupled receptors (GPCRs) play a critical role in disease development, progression, and treatment. This pivotal role is further highlighted by the fact that GPCRs are the most common targets for antipsychotic drugs. The GPCRs activation evokes slow synaptic transmission through several downstream pathways, many of them engaging intracellular Ca2+ mobilization. Dysfunctions of the neurotransmitter systems involving the action of GPCRs in the frontal and limbic-related regions are likely to underly the complex picture that includes the whole spectrum of positive and negative schizophrenia symptoms. Therefore, the progress in our understanding of GPCRs function in the control of brain cognitive functions is expected to open new avenues for selective drug development. In this paper, we review and synthesize the recent data regarding the contribution of neurotransmitter-GPCRs signaling to schizophrenia symptomology.
Collapse
Affiliation(s)
- Tomasz Boczek
- Department of Molecular Neurochemistry, Faculty of Health Sciences, Medical University of Lodz, 92215 Lodz, Poland; (T.B.); (J.M.); (M.S.); (J.W.); (M.L.); (B.F.)
| | - Joanna Mackiewicz
- Department of Molecular Neurochemistry, Faculty of Health Sciences, Medical University of Lodz, 92215 Lodz, Poland; (T.B.); (J.M.); (M.S.); (J.W.); (M.L.); (B.F.)
| | - Marta Sobolczyk
- Department of Molecular Neurochemistry, Faculty of Health Sciences, Medical University of Lodz, 92215 Lodz, Poland; (T.B.); (J.M.); (M.S.); (J.W.); (M.L.); (B.F.)
| | - Julia Wawrzyniak
- Department of Molecular Neurochemistry, Faculty of Health Sciences, Medical University of Lodz, 92215 Lodz, Poland; (T.B.); (J.M.); (M.S.); (J.W.); (M.L.); (B.F.)
| | - Malwina Lisek
- Department of Molecular Neurochemistry, Faculty of Health Sciences, Medical University of Lodz, 92215 Lodz, Poland; (T.B.); (J.M.); (M.S.); (J.W.); (M.L.); (B.F.)
| | - Bozena Ferenc
- Department of Molecular Neurochemistry, Faculty of Health Sciences, Medical University of Lodz, 92215 Lodz, Poland; (T.B.); (J.M.); (M.S.); (J.W.); (M.L.); (B.F.)
| | - Feng Guo
- Department of Pharmaceutical Toxicology, School of Pharmacy, China Medical University, Shenyang 110122, China;
| | - Ludmila Zylinska
- Department of Molecular Neurochemistry, Faculty of Health Sciences, Medical University of Lodz, 92215 Lodz, Poland; (T.B.); (J.M.); (M.S.); (J.W.); (M.L.); (B.F.)
- Correspondence:
| |
Collapse
|
23
|
Kikuchi T, Maeda K, Suzuki M, Hirose T, Futamura T, McQuade RD. Discovery research and development history of the dopamine D 2 receptor partial agonists, aripiprazole and brexpiprazole. Neuropsychopharmacol Rep 2021; 41:134-143. [PMID: 33960741 PMCID: PMC8340839 DOI: 10.1002/npr2.12180] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 03/24/2021] [Accepted: 03/24/2021] [Indexed: 01/31/2023] Open
Abstract
Otsuka Pharmaceutical Co., Ltd. successfully developed the first dopamine D2 receptor partial agonist approved for schizophrenia, the antipsychotic aripiprazole (Abilify®). The drug was approved for this indication in the United States in 2002 and has received approval in the United States, Europe, Japan, and many other countries for several indications including schizophrenia, acute mania, adjunctive treatment of major depressive disorder (MDD), irritability associated with autistic disorder, and Tourette's disorder. Otsuka next developed brexpiprazole (Rexulti®), another D2 receptor partial agonist, which was granted marketing approval in the United States in 2015 as adjunctive therapy in major depressive disorder and for the treatment of schizophrenia. In Japan, brexpiprazole also received approval as a treatment for schizophrenia in 2018. In this review, we describe Otsuka's research history and achievements over the preceding 40 years in the area of antipsychotic drug discovery for dopamine D2 receptor partial agonists. “Dopamine‐system stabilizer” activity of aripiprazole.
![]()
Collapse
Affiliation(s)
- Tetsuro Kikuchi
- New Drug Research Division, Pharmaceutical Business Division, Otsuka Pharmaceutical Co., Ltd., Tokushima, Japan
| | - Kenji Maeda
- Department of Lead Discovery Research, New Drug Research Division, Pharmaceutical Business Division, Otsuka Pharmaceutical Co., Ltd., Tokushima, Japan
| | - Mikio Suzuki
- Department of CNS Research, New Drug Research Division, Pharmaceutical Business Division, Otsuka Pharmaceutical Co., Ltd., Tokushima, Japan
| | - Tsuyoshi Hirose
- New Drug Research Division, Pharmaceutical Business Division, Otsuka Pharmaceutical Co., Ltd., Tokushima, Japan
| | - Takashi Futamura
- Department of CNS Research, New Drug Research Division, Pharmaceutical Business Division, Otsuka Pharmaceutical Co., Ltd., Tokushima, Japan
| | - Robert D McQuade
- Otsuka Pharmaceutical Development & Commercialization, Inc., Princeton, NJ, USA
| |
Collapse
|
24
|
Sasabe H, Koga T, Furukawa M, Matsunaga M, Kaneko Y, Koyama N, Hirao Y, Akazawa H, Kawabata M, Kashiyama E, Takeuchi K. Pharmacokinetics and metabolism of brexpiprazole, a novel serotonin-dopamine activity modulator and its main metabolite in rat, monkey and human. Xenobiotica 2021; 51:590-604. [PMID: 33685346 DOI: 10.1080/00498254.2021.1890275] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The pharmacokinetics of brexpiprazole were investigated in the in vitro and in vivo.The total body clearance of brexpiprazole in rat and monkey was 2.32 and 0.326 L/h/kg, respectively, after intravenous administration, and oral availability was 13.6% and 31.0%, respectively. Dose-dependent exposures were observed at dose ranges between 1-30 mg/kg in the rat and 0.1-3 mg/kg in the monkey.Brexpiprazole distributed widely to body tissues, and Vd,z were 2.81 and 1.82 L/kg in rat and monkey, respectively. The serum protein binding of brexpiprazole was 99% or more in animals and human. Uniform distribution character among the species was suggested by a traditional animal scale-up method.A common main metabolite, DM-3411 was found in animals and humans in the metabolic reactions with the liver S9 fraction. CYP3A4 and CYP2D6 were predominantly involved in the metabolism.The affinity of DM-3411 for D2 receptors was lower than that of brexpiprazole, and neither DM-3411 nor any metabolites with affinity other than M3 were detected in the brain, demonstrating that brexpiprazole is only involved in the pharmacological effects.Overall, brexpiprazole has a simple pharmacokinetic profile with good metabolic stability, linear kinetics, and no remarkable species differences with regard to metabolism and tissue distribution.
Collapse
Affiliation(s)
- Hiroyuki Sasabe
- Tokushima Research Institute, Otsuka Pharmaceutical Co., Ltd, Kawauchi-cho, Tokushima, Japan
| | - Toshihisa Koga
- Tokushima Research Institute, Otsuka Pharmaceutical Co., Ltd, Kawauchi-cho, Tokushima, Japan
| | - Masayuki Furukawa
- Tokushima Research Institute, Otsuka Pharmaceutical Co., Ltd, Kawauchi-cho, Tokushima, Japan
| | - Masayuki Matsunaga
- Tokushima Research Institute, Otsuka Pharmaceutical Co., Ltd, Kawauchi-cho, Tokushima, Japan
| | - Yosuke Kaneko
- Tokushima Research Institute, Otsuka Pharmaceutical Co., Ltd, Kawauchi-cho, Tokushima, Japan
| | - Noriyuki Koyama
- Tokushima Research Institute, Otsuka Pharmaceutical Co., Ltd, Kawauchi-cho, Tokushima, Japan
| | - Yukihiro Hirao
- Tokushima Research Institute, Otsuka Pharmaceutical Co., Ltd, Kawauchi-cho, Tokushima, Japan
| | - Hitomi Akazawa
- Department of CNS research, Otsuka Pharmaceutical Co., Ltd, Kawauchi-cho, Tokushima, Japan
| | - Mitsuhiko Kawabata
- Pharmacokinetics and Bioanalysis Center, Shin Nippon Biomedical Laboratories, Ltd, Kainan, Wakayama, Japan
| | - Eiji Kashiyama
- Tokushima Research Institute, Otsuka Pharmaceutical Co., Ltd, Kawauchi-cho, Tokushima, Japan
| | - Kenji Takeuchi
- Tokushima Research Institute, Otsuka Pharmaceutical Co., Ltd, Kawauchi-cho, Tokushima, Japan
| |
Collapse
|
25
|
Watanabe Y, Yamada S, Otsubo T, Kikuchi T. Brexpiprazole for the Treatment of Schizophrenia in Adults: An Overview of Its Clinical Efficacy and Safety and a Psychiatrist's Perspective. DRUG DESIGN DEVELOPMENT AND THERAPY 2020; 14:5559-5574. [PMID: 33376301 PMCID: PMC7755340 DOI: 10.2147/dddt.s240859] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 11/25/2020] [Indexed: 01/26/2023]
Abstract
While the prognosis of patients with schizophrenia has dramatically improved after the advent of chlorpromazine, the antipsychotics currently available are so numerous that it has become a challenge for psychiatrists to choose from among these drugs for each patient presenting for care. In addition, while numerous studies show that an effective antipsychotic should be continued indefinitely to prevent relapses or worsening, many patients appear to have difficulty remaining on any drug thus initiated. Brexpiprazole, a dopamine D2 receptor partial agonist, appears to provide a unique profile that has much to offer in this light. Specifically, this novel drug is potentially better suited for long-term use, with decreased risk of extrapyramidal side effects, hyperprolactinemia, weight gain, psychosis, insomnia, akathisia, nausea/vomiting or restlessness, thus potentially facilitating patients' reintegration into society. Indeed, brexpiprazole has been shown in randomized, double-blind, placebo-controlled trials to have proven efficacy not only in improving the symptoms of schizophrenia but in preventing relapses. It is also suggested in both short- and long-term studies that brexpiprazole offers a favorable safety and tolerability profile. This review also includes a proposed treatment algorithm incorporating brexpiprazole, based on the clinical trial results available, as well as on the authors' clinical experience, where brexpiprazole may be best used as a drug of first choice for the treatment of schizophrenia. Thus, overall, brexpiprazole appears to play a more significant role in the treatment of schizophrenia than other antipsychotics.
Collapse
Affiliation(s)
| | - Sakiko Yamada
- Medical Affairs, Otsuka Pharmaceutical Co. Ltd, Tokyo, Japan
| | - Tempei Otsubo
- Department of Psychiatry, Tokyo Women's Medical University Medical Center East, Tokyo, Japan
| | - Toshiaki Kikuchi
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan
| |
Collapse
|
26
|
Fujiyama H, Sugawara H, Kanno T, Kawahara K, Tanaka H, Fukuhara R, Boku S, Takebayashi M. Combination therapy of brexpiprazole and aripiprazole for an adolescent patient with a first episode of schizophrenia: A case report. Psychiatry Clin Neurosci 2020; 74:666-667. [PMID: 32909325 DOI: 10.1111/pcn.13151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 08/17/2020] [Accepted: 08/29/2020] [Indexed: 11/30/2022]
Affiliation(s)
- Hiroyuki Fujiyama
- Department of Neuropsychiatry, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Hiroko Sugawara
- Department of Neuropsychiatry, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Teppei Kanno
- Department of Neuropsychiatry, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Kazuhiro Kawahara
- Department of Neuropsychiatry, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Hibiki Tanaka
- Department of Neuropsychiatry, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Ryuji Fukuhara
- Department of Neuropsychiatry, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Shuken Boku
- Department of Neuropsychiatry, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Minoru Takebayashi
- Department of Neuropsychiatry, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| |
Collapse
|
27
|
Orsolini L, De Berardis D, Volpe U. Up-to-date expert opinion on the safety of recently developed antipsychotics. Expert Opin Drug Saf 2020; 19:981-998. [PMID: 32657173 DOI: 10.1080/14740338.2020.1795126] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Introduction There are several new and emerging antipsychotic medication strategies recently marketed or under clinical development for the treatment of several mental disorders. There is the need to provide an up-to-date overview on the safety of this new generation of antipsychotic medications, which includes also the third-generation antipsychotics (TGA). Areas covered The authors aimed at providing a synthesis of the most current evidence about the safety profile of the recently developed and/or marketed antipsychotics. Qualitative synthesis followed an electronic search made inquiring of the following databases: MEDLINE, Embase, PsycINFO, and the Cochrane Library from inception until March 2020, combining free terms and MESH headings for the topics of TGA and recently developed and/or marketed antipsychotics as following: ((safety OR adverse events OR side effects) AND ((brexpiprazole OR cariprazine OR inhaled loxapine OR lumateperone (ITI-007) OR lurasidone OR pimavanserin OR roluperidone (MIN-101) OR transdermal patch asenapine)). Expert opinion Overall, newer antipsychotics display a good safety profile, with a well-demonstrated lower metabolic liability compared to second-generation antipsychotics. Furthermore, TGA appear to specifically target negative symptomatology and improving cognitive domains. Abbreviations Aps=Antipsychotic Drugs; AEs = Adverse Effects; EPS = Extrapyramidal Symptoms; NMS = Neuroleptic malignant syndrome; D = Dopamine; Ki = Inhibitory Constant; 5-HT = Serotonin; ECG = Electrocardiogram; H = Histamine; M = Muscarinic; BMI = Body Mass Index.
Collapse
Affiliation(s)
- Laura Orsolini
- Unit of Psychiatry, Department of Clinical Neurosciences/DIMSC, School of Medicine, Polytechnic University of Marche , Ancona, Italy.,Psychopharmacology, Drug Misuse and Novel Psychoactive Substances Research Unit, School of Life and Medical Sciences, University of Hertfordshire , Hatfield, UK
| | - Domenico De Berardis
- Department of Neuroscience, Imaging and Clinical Science, University of "G. D'Annunzio" , Chieti, Italy.,NHS, Department of Mental Health, Psychiatric Service of Diagnosis and Treatment, Hospital "G. Mazzini" , Teramo, Italy
| | - Umberto Volpe
- Unit of Psychiatry, Department of Clinical Neurosciences/DIMSC, School of Medicine, Polytechnic University of Marche , Ancona, Italy
| |
Collapse
|
28
|
Stummer L, Markovic M, Maroney M. Brexpiprazole in the treatment of schizophrenia and agitation in Alzheimer's disease. Neurodegener Dis Manag 2020; 10:205-217. [PMID: 32618483 DOI: 10.2217/nmt-2020-0013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Schizophrenia is a disabling psychiatric disorder marked by progressive loss of functionality in activities of daily living with each relapse. Antipsychotics, the mainstay of therapy for schizophrenia, treat hallucinations and delusions but may have intolerable side effects, including metabolic disturbances and extrapyramidal symptoms. Brexpiprazole, a second-generation antipsychotic with dopamine partial agonist properties, was approved by the US FDA in 2015 for the treatment of schizophrenia and adjunctive treatment of major depressive disorder and by the EU in 2018 for adults with schizophrenia. Additionally, brexpiprazole has recently been studied for the treatment of agitation in Alzheimer's dementia, an area of largely unmet need. Overall, well-tolerated brexpiprazole expands the armamentarium of treatment options available for these conditions.
Collapse
Affiliation(s)
- Lauren Stummer
- Department of Pharmacy, McLean Hospital, 115 Mill Street Belmont, MA 02478, USA
| | - Marija Markovic
- Department of Pharmacy, Hackensack University Medical Center, 30 Prospect Ave, Hackensack, NJ 07601, USA
| | - Megan Maroney
- Department of Pharmacy Practice and Administration, Ernest Mario School of Pharmacy at Rutgers, The State University of New Jersey, Department of Pharmacy, Monmouth Medical Center, 300 Second Avenue, Long Branch, NJ 07740, USA
| |
Collapse
|
29
|
Takeuchi H, MacKenzie NE, Samaroo D, Agid O, Remington G, Leucht S. Antipsychotic Dose in Acute Schizophrenia: A Meta-analysis. Schizophr Bull 2020; 46:1439-1458. [PMID: 32415847 PMCID: PMC7707077 DOI: 10.1093/schbul/sbaa063] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Little is known regarding optimal antipsychotic doses in the acute phase of schizophrenia. The aim of the present study was to employ the concept of minimum effective dose (MED) in examining efficacy and tolerability within this population. MED was identified for each antipsychotic through a previous systematic review. We then identified double-blind placebo-controlled randomized trials that involved fixed-dose antipsychotic monotherapy in acute schizophrenia and compared the identified MED vs higher doses of the same oral antipsychotic. Studies were selected from a recent meta-analysis examining dose-response relationship of second-generation antipsychotics and haloperidol. We extracted the data on study discontinuation, psychopathology, extrapyramidal symptoms, and treatment-emergent adverse events. For each antipsychotic, we conducted a meta-analysis to compare outcomes between MED and 2-fold MED, and MED and 3-fold MED. A total of 26 studies involving 5618 patients were included in the meta-analysis. In terms of study discontinuation, significant differences were found in study discontinuation due to lack of efficacy between MED and higher doses, in favor of 2-fold and 3-fold MEDs. Regarding psychopathology, both 2-fold and 3-fold MEDs were superior to MED for total and positive symptom scores. As for side effects, 2-fold MED proved inferior to MED for parkinsonism scores and diarrhea, whereas 3-fold MED was inferior for akathisia, somnolence, and vomiting. Findings suggest that clinicians can dose an antipsychotic at 2-fold or 3-fold MED for patients with acute schizophrenia but should closely monitor side effects.
Collapse
Affiliation(s)
- Hiroyoshi Takeuchi
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan,Schizophrenia Program, Centre for Addiction and Mental Health, Toronto, ON, Canada,To whom correspondence should be addressed; Department of Neuropsychiatry, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160–8582, Japan; tel: +81-3-3353-1211 (ext. 62454), fax: +81-3-5379-0187, e-mail:
| | - Nicole E MacKenzie
- Schizophrenia Program, Centre for Addiction and Mental Health, Toronto, ON, Canada,Department of Psychology and Neuroscience, Dalhousie University, Halifax, NS, Canada
| | - Dominic Samaroo
- Schizophrenia Program, Centre for Addiction and Mental Health, Toronto, ON, Canada,Brain and Spine Institute, ICM, Sorbonne University, Paris, France
| | - Ofer Agid
- Schizophrenia Program, Centre for Addiction and Mental Health, Toronto, ON, Canada,Department of Psychiatry, University of Toronto, Toronto, ON, Canada,Institute of Medical Science, University of Toronto, Toronto, ON, Canada
| | - Gary Remington
- Schizophrenia Program, Centre for Addiction and Mental Health, Toronto, ON, Canada,Department of Psychiatry, University of Toronto, Toronto, ON, Canada,Institute of Medical Science, University of Toronto, Toronto, ON, Canada,Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada
| | - Stefan Leucht
- Department of Psychiatry and Psychotherapy, Technical University of Munich, School of Medicine, Munich, Germany
| |
Collapse
|
30
|
Abstract
Aripiprazole, brexpiprazole and cariprazine differ from all other second-generation antipsychotics due to partial agonism at the dopamine D2 and D3 receptors. In contrast to aripiprazole, brexpiprazole has lower intrinsic dopamine D2 activity and higher affinity for the serotonin 5-HT1A and 5-HT2A receptors, while cariprazine has the highest affinity for the dopamine D3 receptor, and the longest half-life. The main adverse effect of dopamine receptor partial agonists (DRPAs) is akathisia of low-to-moderate severity, which occurs in a small proportion of patients, usually in the first few weeks of treatment. While definitive conclusions concerning differences between the DRPAs require head-to-head comparison studies, on the available evidence, akathisia is probably least likely to occur with brexpiprazole and most likely with cariprazine; the risk of akathisia with aripiprazole lies in between. Weight-gain risk is low with aripiprazole and cariprazine, but moderate with brexpiprazole. Risk of sedation is low with DRPAs, as is risk of insomnia and nausea. Partial dopamine agonism leads to a low risk for hyperprolactinaemia (and probably a low risk of sexual dysfunction). Prolactin concentrations fall in some patients (particularly those with elevated levels prior to initiating the drugs). Rates of discontinuation due to adverse effects in pivotal studies were low, and on the whole, DRPAs are well tolerated. Aripiprazole has been implicated in pathological gambling and other impulse control behaviours, likely due to partial dopamine agonist activity (there have been no reports with brexpiprazole and cariprazine). The risks for diabetes and tardive dyskinesia with DRPAs are unknown, but are likely to be low. On the basis of tolerability, DRPAs should be considered as first-line treatment options, particularly in patients with early schizophrenia.
Collapse
|
31
|
Aripiprazole vs. brexpiprazole for acute schizophrenia: a systematic review and network meta-analysis. Psychopharmacology (Berl) 2020; 237:1459-1470. [PMID: 32002559 DOI: 10.1007/s00213-020-05472-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 01/21/2020] [Indexed: 12/11/2022]
Abstract
RATIONALE What is the difference between aripiprazole and brexpiprazole? OBJECTIVES This systematic review, network meta-analysis of randomized trials evaluated the efficacy and safety/tolerability of aripiprazole and brexpiprazole for treating acute schizophrenia. METHODS We searched Scopus, MEDLINE, and Cochrane Library from inception until May 22, 2019. The response rate was set as the primary outcome. Other outcomes were discontinuation rate and incidence of individual adverse events. The risk ratio (RR) and 95% credible interval (95%CrI) were calculated. RESULTS Fourteen studies were identified (n = 3925). Response rates of both aripiprazole and brexpiprazole were superior to that of the placebo (RR [95%CrI]: aripiprazole = 0.84 [0.78, 0.92], brexpiprazole = 0.84 [0.77, 0.92]). Aripiprazole and brexpiprazole were associated with a lower incidence of all-cause discontinuation (0.80 [0.71, 0.89], 0.83 [0.72, 0.95]), adverse events (0.67 [0.47, 0.97], 0.64 [0.46, 0.94]), and inefficacy (0.56 [0.40, 0.77], 0.68 [0.48, 0.99]) compared with the placebo. Although brexpiprazole was associated with a lower incidence of schizophrenia as an adverse event compared with the placebo (0.57 [0.37, 0.85]), aripiprazole and brexpiprazole were associated with a higher incidence of weight gain compared with the placebo (2.12 [1.28, 3.68], 2.14 [1.35, 3.42]). No significant differences were found in other individual adverse events, such as somnolence, akathisia, extrapyramidal symptoms, and dizziness between aripiprazole or brexpiprazole and placebo. Any outcome between aripiprazole and brexpiprazole were not different. CONCLUSIONS Differences in short-term efficacy and safety for acute schizophrenia were not apparent between aripiprazole and brexpiprazole. Future studies are warranted to evaluate whether there are differences in the long-term outcome between treatments.
Collapse
|
32
|
Efficacy and safety of brexpiprazole in acute management of psychiatric disorders: a meta-analysis of randomized controlled trials. Int Clin Psychopharmacol 2020; 35:119-128. [PMID: 32141908 DOI: 10.1097/yic.0000000000000308] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Brexpiprazole is a new atypical antipsychotic for schizophrenia management and as adjunct in major depressive disorder (MDD). We searched randomized controlled trials (RCT) to review brexpiprazole efficacy and tolerability in acute management of schizophrenia and MDD using PubMed, EUDRACT, ClinicalTrials.gov and Cochrane Central Register of Controlled Trials. A meta-analysis was conducted using the identified 14 RCT to assess its efficacy using positive and negative syndrome scale (PANSS), clinical global impressions - severity of illness (CGI-S), personal and social performance scale (PSP), Montgomery-Åsberg depression rating scale (MADRS), Sheehan disability scale (SDS) and Hamilton depression rating scale (HDRS17). The mean difference comparing brexpiprazole and placebo were PANSS -4.48, CGI-S -0.23 and PSP 3.24 favoring brexpiprazole. Compared to aripiprazole and quetiapine, brexpiprazole showed similar efficacy. In MDD, brexpiprazole showed efficacy compared to placebo demonstrated by MADRS -1.25, SDS -0.37 and HDRS17 -1.28. Brexpiprazole was associated with side effects including akathisia risk ratio (RR) = 1.72; weight increase RR = 2.74 and somnolence RR = 1.87. Compared to 4 mg, brexpiprazole 2 mg was associated with less risk of akathisia and somnolence. Brexpiprazole demonstrated significant improvements in schizophrenia and MDD and is well-tolerated; however, associated with akathisia and somnolence. These findings will guide psychiatrists and pharmacists in their clinical role for supporting psychiatric patients care.
Collapse
|
33
|
Bighelli I, Leucht C, Huhn M, Reitmeir C, Schwermann F, Wallis S, Davis JM, Leucht S. Are Randomized Controlled Trials on Pharmacotherapy and Psychotherapy for Positive Symptoms of Schizophrenia Comparable? A Systematic Review of Patient and Study Characteristics. Schizophr Bull 2020; 46:496-504. [PMID: 32275756 PMCID: PMC7147572 DOI: 10.1093/schbul/sbz090] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND We examined patient and study characteristics of pharmacotherapy and psychotherapy trials to establish whether the effects of these 2 treatment strategies can be compared meaningfully. METHODS We inspected all randomized controlled trials included in 2 recent meta-analyses on antipsychotics and psychotherapy in patients with positive symptoms of schizophrenia, searching EMBASE, MEDLINE, PsycINFO, Cochrane Library, and ClinicalTrials.gov. Differences between psychotherapy and pharmacotherapy trials were analyzed with Wilcoxon-Mann-Whitney and chi-square tests. RESULTS Eighty studies with 18 271 participants on antipsychotic drugs and 53 studies with 4068 participants on psychotherapy were included. Psychotherapy studies included less severely ill patients (P < .0001), with a shorter duration of illness (P = .021), lasted for a longer period (P < .0001), administered the intervention as add-on to antipsychotics (P < .0001), had higher risk of bias in some domains including blinding of outcome assessment (P < .0001), and were funded publicly more frequently (P < .0001). Antipsychotic trials had larger sample sizes (P < .0001) and more study centers (P < .0001), included more males (P = .0001), inpatients (P < .0001), and slightly older patients (P = .031), more often used diagnostic operationalized criteria (P = .006), and were sponsored by pharmaceutical companies. They did not differ in conflict of interest (P = .24). CONCLUSIONS We found key differences between the 2 groups of studies that encompass higher risk of bias in psychotherapy studies and the inclusion of more severe patients in drug trials. These differences imply that study and patient characteristics should be carefully taken into account before considering a network meta-analysis. In the interest of patients, psychopharmacologists and psychotherapists should optimize their treatments rather than seeing them in competition.
Collapse
Affiliation(s)
- Irene Bighelli
- Department of Psychiatry and Psychotherapy, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, Munich, Germany
| | - Claudia Leucht
- Department of Psychiatry and Psychotherapy, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, Munich, Germany
| | - Maximilian Huhn
- Department of Psychiatry and Psychotherapy, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, Munich, Germany
| | - Cornelia Reitmeir
- Department of Psychiatry and Psychotherapy, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, Munich, Germany
| | - Felicitas Schwermann
- Department of Psychiatry and Psychotherapy, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, Munich, Germany
| | - Sofia Wallis
- Department of Psychiatry and Psychotherapy, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, Munich, Germany
| | - John M Davis
- Department of Psychiatry, College of Medicine, University of Illinois at Chicago, Chicago, IL
| | - Stefan Leucht
- Department of Psychiatry and Psychotherapy, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, Munich, Germany
| |
Collapse
|
34
|
Leucht S, Crippa A, Siafis S, Patel MX, Orsini N, Davis JM. Dose-Response Meta-Analysis of Antipsychotic Drugs for Acute Schizophrenia. Am J Psychiatry 2020; 177:342-353. [PMID: 31838873 DOI: 10.1176/appi.ajp.2019.19010034] [Citation(s) in RCA: 108] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE The dose-response relationships of antipsychotic drugs for schizophrenia are not well defined, but such information would be important for decision making by clinicians. The authors sought to fill this gap by conducting dose-response meta-analyses. METHODS A search of multiple electronic databases (through November 2018) was conducted for all placebo-controlled dose-finding studies for 20 second-generation antipsychotic drugs and haloperidol (oral and long-acting injectable, LAI) in people with acute schizophrenia symptoms. Dose-response curves were constructed with random-effects dose-response meta-analyses and a spline model. The outcome measure was total score reduction from baseline on the Positive and Negative Syndrome Scale or the Brief Psychiatric Rating Scale. The authors identified 95% effective doses, explored whether higher or lower doses than the currently licensed ones might be more appropriate, and derived dose equivalencies from the 95% effective doses. RESULTS Sixty-eight studies met the inclusion criteria. The 95% effective doses and the doses equivalent to 1 mg of oral risperidone, respectively, were as follows: amisulpride for patients with positive symptoms, 537 mg/day and 85.8 mg; aripiprazole, 11.5 mg/day and 1.8 mg; aripiprazole LAI (lauroxil), 463 mg every 4 weeks and 264 mg; asenapine, 15.0 mg/day and 2.4 mg; brexpiprazole, 3.36 mg/day and 0.54 mg; haloperidol, 6.3 mg/day and 1.01 mg; iloperidone, 20.13 mg/day and 3.2 mg; lurasidone, 147 mg/day and 23.5 mg; olanzapine, 15.2 mg/day and 2.4 mg; olanzapine LAI, 277 mg every 2 weeks and 3.2 mg; paliperidone, 13.4 mg/day and 2.1 mg; paliperidone LAI, 120 mg every 4 weeks and 1.53 mg; quetiapine, 482 mg/day and 77 mg; risperidone, 6.3 mg/day and 1 mg; risperidone LAI, 36.6 mg every 2 weeks and 0.42 mg; sertindole, 22.5 mg/day and 3.6 mg; and ziprasidone, 186 mg/day and 30 mg. For amisulpride and olanzapine, specific data for patients with predominant negative symptoms were available. The authors have made available on their web site a spreadsheet with this method and other updated methods that can be used to estimate dose equivalencies in practice. CONCLUSIONS In chronic schizophrenia patients with acute exacerbations, doses higher than the identified 95% effective doses may on average not provide more efficacy. For some drugs, higher than currently licensed doses might be tested in further trials, because their dose-response curves did not plateau.
Collapse
Affiliation(s)
- Stefan Leucht
- Department of Psychiatry and Psychotherapy, Technical University of Munich, School of Medicine, Munich (Leucht, Siafis); Department of Psychosis Studies, Institute of Psychiatry, Psychology, and Neuroscience, King's College London (Leucht, Patel); Department of Global Public Health, Karolinska Institutet, Stockholm (Orsini); Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm (Crippa); Department of Psychiatry, University of Illinois at Chicago, and John Hopkins School of Medicine, Baltimore (Davis)
| | - Alessio Crippa
- Department of Psychiatry and Psychotherapy, Technical University of Munich, School of Medicine, Munich (Leucht, Siafis); Department of Psychosis Studies, Institute of Psychiatry, Psychology, and Neuroscience, King's College London (Leucht, Patel); Department of Global Public Health, Karolinska Institutet, Stockholm (Orsini); Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm (Crippa); Department of Psychiatry, University of Illinois at Chicago, and John Hopkins School of Medicine, Baltimore (Davis)
| | - Spyridon Siafis
- Department of Psychiatry and Psychotherapy, Technical University of Munich, School of Medicine, Munich (Leucht, Siafis); Department of Psychosis Studies, Institute of Psychiatry, Psychology, and Neuroscience, King's College London (Leucht, Patel); Department of Global Public Health, Karolinska Institutet, Stockholm (Orsini); Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm (Crippa); Department of Psychiatry, University of Illinois at Chicago, and John Hopkins School of Medicine, Baltimore (Davis)
| | - Maxine X Patel
- Department of Psychiatry and Psychotherapy, Technical University of Munich, School of Medicine, Munich (Leucht, Siafis); Department of Psychosis Studies, Institute of Psychiatry, Psychology, and Neuroscience, King's College London (Leucht, Patel); Department of Global Public Health, Karolinska Institutet, Stockholm (Orsini); Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm (Crippa); Department of Psychiatry, University of Illinois at Chicago, and John Hopkins School of Medicine, Baltimore (Davis)
| | - Nicola Orsini
- Department of Psychiatry and Psychotherapy, Technical University of Munich, School of Medicine, Munich (Leucht, Siafis); Department of Psychosis Studies, Institute of Psychiatry, Psychology, and Neuroscience, King's College London (Leucht, Patel); Department of Global Public Health, Karolinska Institutet, Stockholm (Orsini); Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm (Crippa); Department of Psychiatry, University of Illinois at Chicago, and John Hopkins School of Medicine, Baltimore (Davis)
| | - John M Davis
- Department of Psychiatry and Psychotherapy, Technical University of Munich, School of Medicine, Munich (Leucht, Siafis); Department of Psychosis Studies, Institute of Psychiatry, Psychology, and Neuroscience, King's College London (Leucht, Patel); Department of Global Public Health, Karolinska Institutet, Stockholm (Orsini); Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm (Crippa); Department of Psychiatry, University of Illinois at Chicago, and John Hopkins School of Medicine, Baltimore (Davis)
| |
Collapse
|
35
|
Barton BB, Segger F, Fischer K, Obermeier M, Musil R. Update on weight-gain caused by antipsychotics: a systematic review and meta-analysis. Expert Opin Drug Saf 2020; 19:295-314. [DOI: 10.1080/14740338.2020.1713091] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Barbara B Barton
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany
| | - Felix Segger
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany
| | - Kai Fischer
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany
| | | | - Richard Musil
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany
| |
Collapse
|
36
|
Musco S, McAllister V, Caudle I. Dopamine-receptor blocking agent-associated akathisia: a summary of current understanding and proposal for a rational approach to treatment. Ther Adv Psychopharmacol 2020; 10:2045125320937575. [PMID: 32922732 PMCID: PMC7457694 DOI: 10.1177/2045125320937575] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 06/02/2020] [Indexed: 12/17/2022] Open
Abstract
Dopamine-receptor blocking agent-associated akathisia (DRBA-A) is an adverse effect that can significantly limit the use of these important medications for the treatment of a variety of psychiatric diseases, yet there is no unifying theory regarding its pathophysiology. This knowledge gap limits clinicians' ability to effectively manage DRBA-A and mitigate negative outcomes in an already vulnerable patient population. Based on a review of the current literature on the subject, it is hypothesized that dopaminergic and noradrenergic signaling is perturbed in DRBA-A. Accordingly, it is proposed that the optimal agent to manage this extrapyramidal symptom should increase dopamine signaling in the affected areas of the brain and counteract compensatory noradrenergic signaling via antagonism of adrenergic or serotonergic receptors.
Collapse
Affiliation(s)
- Shaina Musco
- Department of Clinical Sciences, High Point University Fred Wilson School of Pharmacy, One University Parkway, High Point, NC 27262, USA
| | - Vivian McAllister
- High Point University David R. Hayworth College of Arts and Sciences, One University Parkway, High Point, NC, USA
| | - Ian Caudle
- High Point University Fred Wilson School of Pharmacy, One University Parkway, High Point, NC, USA
| |
Collapse
|
37
|
Inada K, Yamada S, Akiyoshi H, Kojima Y, Iwashita S, Ishigooka J. Long-Term Efficacy and Safety of Brexpiprazole in Elderly Japanese Patients with Schizophrenia: A Subgroup Analysis of an Open-Label Study. Neuropsychiatr Dis Treat 2020; 16:2267-2275. [PMID: 33116525 PMCID: PMC7547788 DOI: 10.2147/ndt.s265173] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 09/17/2020] [Indexed: 11/23/2022] Open
Abstract
PURPOSE This study was performed to assess the long-term efficacy, safety, and tolerability of brexpiprazole in elderly Japanese patients with schizophrenia. METHODS This is a post hoc analysis of a previous open-label study conducted over 56 weeks which consisted of two consecutive phases: a 4-week switching period and a 52-week open-label period. Mean change in the Positive and Negative Syndrome Scale (PANSS) total score, response rates, number and incidence of treatment-emergent adverse events (TEAEs), and other safety parameters were analyzed using descriptive statistics based on age group (elderly, ≥65 and non-elderly, <65). RESULTS This post hoc analysis included 208 de novo patients of which 33 were elderly. The continuation rate in elderly patients was 54.5%, and the mean daily dose and treatment duration of brexpiprazole in elderly patients at week 56 were similar to those of non-elderly patients. The mean change in the PANSS total score from the baseline to week 56 was -13.8 in elderly patients and this improvement was maintained throughout the open-label phase. This outcome was comparable to that of the non-elderly patients (-9.0). The incidence rate of TEAEs was 97.0% in elderly patients and 82.3% in non-elderly patients. Most of the TEAEs were either mild (75.8%) or moderate (18.2%) in severity in the elderly patients and the incidence of TEAEs leading to discontinuation was lower in elderly (9.1%) than in non-elderly patients (13.1%). The most commonly observed adverse events in elderly patients were nasopharyngitis (30.3%) and worsening of schizophrenia (27.3%). The safety profiles in both groups were similar. CONCLUSION Brexpiprazole was shown to be safe and effective in the treatment of elderly Japanese patients with schizophrenia.
Collapse
Affiliation(s)
- Ken Inada
- Department of Psychiatry, Tokyo Women's Medical University, Tokyo, Japan
| | - Sakiko Yamada
- Department of Medical Affairs, Otsuka Pharmaceutical Co., Ltd., Tokyo, Japan
| | - Hisashi Akiyoshi
- Department of Medical Affairs, Otsuka Pharmaceutical Co., Ltd., Tokyo, Japan
| | - Yoshitsugu Kojima
- Department of Medical Affairs, Otsuka Pharmaceutical Co., Ltd., Tokyo, Japan
| | - Shuichi Iwashita
- Headquarters of Clinical Development, Otsuka Pharmaceutical Co., Ltd., Osaka, Japan
| | | |
Collapse
|
38
|
Suzuki M, Niidome K, Maeda K, Kikuchi T, Usami T, Futamura T. [Preclinical pharmacological profiles and clinical efficacy of the novel antipsychotic drug brexpiprazole (REXULTI ® Tablets 1 mg, 2 mg)]. Nihon Yakurigaku Zasshi 2019; 154:275-287. [PMID: 31735758 DOI: 10.1254/fpj.154.275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Brexpiprazole (Rexulti®) is the second antipsychotic agent in the world with dopamine D2 receptor partial agonist which was developed by Otsuka Pharmaceutical Co. Ltd. It is categorized as 〝Serotonin- dopamine Activity Modulator (SDAM)〟 that regulates both serotoninergic and dopaminergic systems by acting as a partial agonist for serotonin 5-HT1A receptors and D2 receptors and as an antagonist for 5-HT2A receptors. In preclinical pharmacological studies, brexpiprazole showed the equivalent antipsychotic-like effects to those of other atypical antipsychotics. And it was suggested that brexpiprazole has the low potentials to induce extrapyramidal symptoms, hyperprolactinemia and tardive dyskinesia, with improvement effects on cognitive dysfunction. Furthermore, brexpiprazole has the weak effects on histamine H1 receptors which are associated with sedation and weight gain in clinical. In the clinical trials in patients with schizophrenia in both acute and maintenance phase, brexpiprazole showed improvement of antipsychotic effects against placebo, and low incidence of adverse events, e.g., extrapyramidal symptoms, hyperprolactinemia, and weight gain, as suggested in preclinical studies. Furthermore, brexpiprazole showed low incidence of metabolic abnormalities. In particular, brexpiprazole showed relatively low incidences of akathisia, insomnia and agitation which has been commonly reported with aripiprazole. This would be based on the pharmacological features of brexpiprazole that is more potent antagonism at 5-HT2A receptors and D2 receptors partial agonism with lower intrinsic activity compared to those of aripiprazole. In conclusion, brexpiprazole could be one of the antipsychotics with the most rational mechanism of action, and the better efficacy and safety/tolerability profiles would contribute to the treatment of patients with schizophrenia.
Collapse
Affiliation(s)
- Mikio Suzuki
- Department of CNS Research, Otsuka Pharmaceutical Co. Ltd
| | | | - Kenji Maeda
- Department of Lead Discovery Research, Otsuka Pharmaceutical Co. Ltd
| | - Tetsuro Kikuchi
- Pharmaceutical Business Division, Otsuka Pharmaceutical Co. Ltd
| | | | | |
Collapse
|
39
|
Amada N, Akazawa H, Ohgi Y, Maeda K, Sugino H, Kurahashi N, Kikuchi T, Futamura T. Brexpiprazole has a low risk of dopamine D 2 receptor sensitization and inhibits rebound phenomena related to D 2 and serotonin 5-HT 2A receptors in rats. Neuropsychopharmacol Rep 2019; 39:279-288. [PMID: 31487433 PMCID: PMC7292306 DOI: 10.1002/npr2.12076] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 07/24/2019] [Accepted: 08/02/2019] [Indexed: 12/21/2022] Open
Abstract
Background Long‐term antipsychotic treatment in patients with schizophrenia can induce supersensitivity psychosis and tardive dyskinesia which is thought to be caused by dopamine D2 receptor sensitization. We evaluated the effects of brexpiprazole on D2 receptor sensitivity after subchronic treatment in rats. We also evaluated whether brexpiprazole could suppress enhanced response to D2 receptors in rats subchronically dosed with another atypical antipsychotic. Methods The maximum D2 receptor density (Bmax) and apomorphine (a D2 receptor agonist)‐induced stereotypy were measured in rats orally dosed with vehicle, haloperidol (1 mg/kg), or brexpiprazole (4 or 30 mg/kg for Bmax, 6 or 30 mg/kg for stereotypy) for 21 days. Then, effects of oral administrations of brexpiprazole (3 mg/kg), aripiprazole (10 mg/kg), and olanzapine (3 mg/kg) against increases in apomorphine‐induced hyperlocomotion and (±)‐2,5‐dimethoxy‐4‐iodoamphetamine hydrochloride (DOI: a 5‐HT2A receptor agonist)‐induced head twitches were evaluated in rats subcutaneously treated with risperidone (1.5 mg/kg/d) via minipumps for 21 days. Results Haloperidol and brexpiprazole (30 mg/kg: approximately tenfold ED50 of anti‐apomorphine‐induced stereotypy) but not brexpiprazole (4 or 6 mg/kg) significantly increased the Bmax and apomorphine‐induced stereotypy. Brexpiprazole (3 mg/kg) and olanzapine (3 mg/kg) significantly suppressed both increases in apomorphine‐induced hyperlocomotion and also DOI‐induced head twitches in rats subchronically treated with risperidone, but aripiprazole (10 mg/kg) significantly suppressed only apomorphine‐induced hyperlocomotion. Conclusion Brexpiprazole has a low risk of D2 receptor sensitization after a repeated administration and suppresses the rebound phenomena related to D2 and 5‐HT2A receptors after a repeated administration of risperidone. Brexpiprazole has less potential to evoke dopamine D2 receptor supersensitivity in rats after repeated administration compared to haloperidol. In addition, brexpiprazole may have a lower risk for producing rebound symptoms associated with D2 receptor, 5‐HT2A receptor sensitization when switching from other antipsychotics such as risperidone.![]()
Collapse
Affiliation(s)
- Naoki Amada
- Department of CNS Research, Otsuka Pharmaceutical Co., Ltd., Tokushima, Japan
| | - Hitomi Akazawa
- Department of CNS Research, Otsuka Pharmaceutical Co., Ltd., Tokushima, Japan
| | - Yuta Ohgi
- Department of CNS Research, Otsuka Pharmaceutical Co., Ltd., Tokushima, Japan
| | - Kenji Maeda
- Department of Lead Discovery Research, Otsuka Pharmaceutical Co., Ltd., Tokushima, Japan
| | - Haruhiko Sugino
- Global Business Development, Otsuka Pharmaceutical Development and Commercialization, Ltd., Princeton, New Jersey
| | - Nobuyuki Kurahashi
- Global CNS Business, Otsuka Pharmaceutical Development and Commercialization, Ltd., Princeton, New Jersey
| | - Tetsuro Kikuchi
- Pharmaceutical Division, Otsuka Pharmaceutical Co., Ltd., Tokushima, Japan
| | - Takashi Futamura
- Department of CNS Research, Otsuka Pharmaceutical Co., Ltd., Tokushima, Japan
| |
Collapse
|
40
|
Matsusaki A, Kaneko M, Narukawa M. Meta-analysis of Dropout Rates in Placebo-Controlled Randomized Clinical Trials of Atypical Antipsychotics Assessed by PANSS. Clin Drug Investig 2019; 39:917-926. [PMID: 31250403 DOI: 10.1007/s40261-019-00813-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
BACKGROUND AND OBJECTIVES Subject dropout rates in placebo-controlled randomized clinical trials (RCTs) of antipsychotics are high. The missing values due to dropout represent a potential source of bias in clinical trials. We aimed to identify the potential factors affecting subject dropout in atypical antipsychotics RCTs by conducting a meta-analysis. METHODS Placebo-controlled RCTs for atypical antipsychotics using positive and negative syndrome scale (PANSS) as a psychiatric assessment scale were selected by database search. The potential factors affecting subject dropout, such as publication year, study design, and operational factors, were analyzed by meta-regression. RESULTS Forty-seven placebo controlled RCTs of atypical antipsychotics of which results were published between 1993 and 2018 were identified through the database search. In the multivariate meta-regression analysis, earlier publication year, older age of subjects, and longer study duration were significantly associated with high subject dropout rates in placebo-controlled clinical trials of atypical antipsychotics. CONCLUSION Subject dropout rates in clinical trials of atypical antipsychotics published between 1993 and 2018 year decreased over time. Study duration should be taken into consideration when designing future studies, where short study periods yet appropriate for evaluating the efficacy of new atypical antipsychotics are preferable. Additionally, previous medications and the degree of subject satisfaction with antipsychotics might affect subject dropout rate.
Collapse
Affiliation(s)
- Akiko Matsusaki
- Department of Clinical Medicine (Pharmaceutical Medicine), Graduate School of Pharmaceutical Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan.
| | - Masayuki Kaneko
- Department of Clinical Medicine (Pharmaceutical Medicine), Graduate School of Pharmaceutical Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan
| | - Mamoru Narukawa
- Department of Clinical Medicine (Pharmaceutical Medicine), Graduate School of Pharmaceutical Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan
| |
Collapse
|
41
|
Demyttenaere K, Detraux J, Racagni G, Vansteelandt K. Medication-Induced Akathisia with Newly Approved Antipsychotics in Patients with a Severe Mental Illness: A Systematic Review and Meta-Analysis. CNS Drugs 2019; 33:549-566. [PMID: 31065941 DOI: 10.1007/s40263-019-00625-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Akathisia is a common and distressing movement disorder that can be associated with the use of antipsychotics. It is characterized by a subjective (inner restlessness) and an objective (excessive movements) component. Akathisia can have a negative impact on clinical outcome and even lead to treatment discontinuation. Although medication-induced akathisia is more commonly associated with the use of first-generation antipsychotics (FGAs), it also occurs with second-generation antipsychotics (SGAs), including the newly approved antipsychotics (NAPs) asenapine, lurasidone, iloperidone, cariprazine, and brexpiprazole. Until now, no meta-analysis has been published on the risk of akathisia for all NAPs, as monotherapy or adjunctive treatment, in patients with a severe mental illness. OBJECTIVE The primary objectives of this systematic review and meta-analysis were to (i) compare akathisia incidence rates of the NAPs, as monotherapy or adjunctive treatment, in adult patients with a severe mental illness (i.e., schizophrenia, bipolar disorder, or major depressive disorder), using data from published and unpublished randomized controlled trials; and (ii) examine the role of several study characteristics explaining differences in akathisia incidence rates between studies. METHODS A systematic literature search, using the PubMed, EMBASE, and Cochrane Library databases (until October 2018), was conducted for English-language placebo- as well as active-controlled clinical trials, including subjective (percentage of patients reporting akathisia) and/or scale-defined medication-induced akathisia incidence rates with NAPs (as monotherapy or as adjunctive treatment) in adult patients with schizophrenia, bipolar disorder, or major depressive disorder. Additional unpublished clinical trials were identified through the ClinicalTrials.gov electronic database. Two meta-analyses (incidence rates and odds ratio [OR] [placebo vs. active] of medication-induced akathisia with NAPs) were performed to obtain an optimal estimation of akathisia risks of adult patients with a severe mental illness under these treatment conditions and to assess the role of study characteristics. RESULTS Two hundred and thirteen reports were selected as potentially eligible for our meta-analysis. Of these, 48 met the inclusion criteria. Eight records, identified through the ClinicalTrials.gov database and cross-referencing, and which fulfilled the inclusion criteria, were added, resulting in a total of 56 records (iloperidone = 5, asenapine = 11, lurasidone = 15, brexpiprazole = 13, cariprazine = 12). The estimated weighted mean incidence rate of akathisia was 7.7% (95% confidence interval [CI] 6.5-9.1), with estimates being 3.9% (95% CI 2.4-6.3) for iloperidone, 6.8% (95% CI 5.1-9.0) for asenapine, 10.0% (95% CI 7.4-13.5) for brexpiprazole, 12.7% (95% CI 10.1-16.1) for lurasidone, and 17.2% (95% CI 13.4-22.1) for cariprazine. After Tukey-adjustment for multiple testing, the incidence rate of akathisia was significantly (p < 0.05) lower for iloperidone than for brexpiprazole, lurasidone, and cariprazine. In addition, the incidence rate of akathisia was significantly (p < 0.05) lower for asenapine than for lurasidone and cariprazine. Finally, the incidence rate of akathisia was significantly (p < 0.05) lower for brexpiprazole than for cariprazine. Type of medication (p < 0.0001), diagnosis (p = 0.02), and race (p = 0.0003) significantly explained part of the heterogeneity of the incidence estimates of akathisia between studies. The estimated weighted OR of akathisia under medication, compared with placebo, was 2.43 (95% CI 1.91-3.10). The OR was smallest for iloperidone (OR 1.20; 95% CI 0.42-3.45) and increased for brexpiprazole (OR 2.04; 95% CI 1.09-3.83), asenapine (OR 2.37; 95% CI 1.32-4.27), lurasidone (OR 3.74; 95% CI 2.32-6.02), and cariprazine (OR 4.35; 95% CI 2.80-6.75). Only type of medication (p = 0.03) explained systematic differences in the OR for akathisia between placebo versus active treatment across studies. After Tukey-adjustment for multiple testing, no significant differences between these ORs were found. The severity of akathisia with NAPs generally is mild to moderate, only leading to treatment discontinuation in a minority of cases (< 5%). CONCLUSIONS The use of a NAP raises the akathisia risk more than two-fold when compared with patients receiving placebo. Although distinctions between the different NAPs were not clear in placebo-controlled trials, the results of our meta-analyses and systematic review generally indicate that these differences more than likely reflect real differences, with iloperidone showing the most and cariprazine showing the least benign akathisia profile. Moreover, due to patient characteristics and methodological issues, incidence rates of akathisia with NAPs found in this meta-analysis may even be an underestimation of true incidence rates.
Collapse
Affiliation(s)
- Koen Demyttenaere
- Department of Neurosciences, Research Group Psychiatry, Department of Psychiatry, Faculty of Medicine, University Psychiatric Center KU Leuven and University of Leuven, Campus Gasthuisberg, Herestraat 49, 3000, Louvain, Belgium.
| | - Johan Detraux
- Department of Neurosciences, Research Group Psychiatry, KU Leuven, University Psychiatric Centre, 3070, Kortenberg, Belgium
| | - Giorgio Racagni
- Department of Pharmacological Sciences, Università degli Studi di Milano, Milan, Italy
| | - Kristof Vansteelandt
- Department of Neurosciences, Research Group Psychiatry, KU Leuven, University Psychiatric Centre, 3070, Kortenberg, Belgium
| |
Collapse
|
42
|
Abstract
Brexpiprazole (Rxulti®, Rexulti®) is an oral atypical antipsychotic agent approved for the treatment of schizophrenia in the EU (in adult patients) and the USA, as well as in some other countries, including Japan. Like aripiprazole, it is a partial agonist at dopamine D2 and serotonin 5-HT1A receptors and an antagonist at serotonin 5-HT2A receptors. However, brexpiprazole displays less intrinsic activity at D2 receptors and, coupled with actions at 5HT1A, 5HT2A and noradrenaline α1B receptors that are at least as potent as its action at D2 receptors, is predicted to demonstrate a lower propensity for activating adverse events and extrapyramidal symptoms than aripiprazole. Brexpiprazole 2-4 mg/day produced statistically significant and clinically meaningful improvements in overall symptomatology and psychosocial functioning compared with placebo in adults with acute exacerbation of schizophrenia. As maintenance treatment, brexpiprazole 1-4 mg/day significantly delayed the time to relapse compared with placebo in patients who were already stabilized on the drug and was associated with stabilization or continued improvement in patients' symptoms and functioning. Brexpiprazole was generally well tolerated, exhibiting an adverse event profile characterized by a relatively low incidence of activating and sedating adverse effects, small changes in QT interval and metabolic parameters that were not clinically significant, and moderate weight gain. Clinical evidence to date suggests it usefully extends the range of therapeutic options for schizophrenia.
Collapse
Affiliation(s)
- James E Frampton
- Springer, Private Bag 65901, Mairangi Bay, Auckland, 0754, New Zealand.
| |
Collapse
|
43
|
Ward K, Citrome L. Brexpiprazole for the maintenance treatment of adults with schizophrenia: an evidence-based review and place in therapy. Neuropsychiatr Dis Treat 2019; 15:247-257. [PMID: 30697049 PMCID: PMC6339638 DOI: 10.2147/ndt.s169369] [Citation(s) in RCA: 171] [Impact Index Per Article: 34.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The purpose of this review is to describe the available data for brexpiprazole in the maintenance treatment of schizophrenia. This objective was completed by searching the databases PubMed, Embase, and ClinicalTrials.gov to identify relevant study results presented as papers or abstracts. In summary, brexpiprazole is a new agent in the D2 partial agonist class that has a unique receptor-binding profile, based in part on high affinity for serotonin 5HT1A and 5HT2A receptors, paired with lower intrinsic activity at dopamine D2 receptors. The average dose used in efficacy and safety studies for the maintenance treatment of schizophrenia ranged from 3.0 and 3.1 mg in the open-label safety studies to 3.6 mg in the double-blind randomized relapse-prevention study. Highlights from the 52-week double-blind placebo-controlled relapse-prevention trial evidenced rates of relapse in the brexpiprazole group of 13.5% vs 38.5% in the placebo group (number needed to treat 4, 95% CI 3-8; P<0.0001). Safety data indicate that brexpiprazole is tolerated well, with rates of discontinuation due to treatment-emergent adverse events that ranged from 5.2% of those taking brexpiprazole in the double-blind maintenance phase of the relapse-prevention trial to 15.3% in a 52-week open-label safety study. In the available trials, there were relatively low rates of akathisia, and the degree of weight gain was similar to that seen in studies with aripiprazole for the treatment of schizophrenia. Positive and Negative Syndrome Scale scores also remained relatively stable in the open-label safety studies. Available data indicate that brexpiprazole is an effective agent for the maintenance treatment of schizophrenia that is overall well tolerated.
Collapse
Affiliation(s)
- Kristen Ward
- Department of Clinical Pharmacy, University of Michigan College of Pharmacy, Ann Arbor, MI, USA
| | - Leslie Citrome
- Department of Psychiatry and Behavioral Science, New York Medical College, Valhalla, NY, USA,
| |
Collapse
|
44
|
Kishi T, Oya K, Matsui Y, Nomura I, Sakuma K, Okuya M, Matsuda Y, Fujita K, Funahashi T, Yoshimura R, Iwata N. Comparison of the efficacy and safety of 4 and 2 mg/day brexpiprazole for acute schizophrenia: a meta-analysis of double-blind, randomized placebo-controlled trials. Neuropsychiatr Dis Treat 2018; 14:2519-2530. [PMID: 30319261 PMCID: PMC6171755 DOI: 10.2147/ndt.s176676] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
PURPOSE The purpose of this study was to compare the efficacy and safety of brexpiprazole 4 mg/day (B4) and 2 mg/day (B2) for treating acute schizophrenia. PATIENTS AND METHODS We performed three categorical meta-analyses (B4 vs placebo, B2 vs placebo, and B4 vs B2) of double-blind, randomized placebo-controlled trials (DBRCTs) that reported improvements in the Positive and Negative Syndrome Scale (PANSS) scores, response rate, Clinical Global Impression-Improvement and Severity (CGI-I and CGI-S) scores, discontinuation rate, and incidence of individual adverse events. RESULTS We identified three DBRCTs with 1,444 patients. Both B4 and B2 were superior to placebo for PANSS total score (B4: standardized mean difference [SMD] =-0.30, 95% CI =-0.43, -0.17; B2: SMD =-0.30, 95% CI =-0.46, -0.13), PANSS negative score, response rate, CGI-S score, and CGI-I score. B2, but not B4, was superior to placebo for the PANSS positive score. However, there was considerable heterogeneity in the meta-analysis for B4's PANSS positive score, which disappeared after excluding a 2018 Japanese study from the meta-analysis that included more patients on a high-dose antipsychotic prior to their participation. A meta-analysis that excluded the data from the abovementioned patients showed B4 to be superior to the placebo in terms of the PANSS positive score (SMD =-0.22, 95% CI =-0.40, -0.03). B2, but not B4, was associated with a lower incidence of all-cause discontinuation compared with placebo. Both B4 and B2 were superior to placebo for discontinuation due to adverse events and schizophrenia, but both were associated with a higher incidence of weight gain compared with placebo. B4 was also associated with a higher risk of extrapyramidal symptoms than B2. CONCLUSION Both B4 and B2 benefitted patients with schizophrenia, particularly those who were not previously on high-dose antipsychotics. Both the regimens were well-tolerated, but carried a risk of weight gain and extrapyramidal symptoms, although the latter risk was higher for B4 than B2.
Collapse
Affiliation(s)
- Taro Kishi
- Department of Psychiatry, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan,
| | - Kazuto Oya
- Department of Psychiatry, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan,
| | - Yuki Matsui
- Department of Psychiatry, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan, .,Department of Psychiatry, Jindai Hospital, Toyota, Aichi 470-0361, Japan
| | - Ikuo Nomura
- Department of Psychiatry, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan,
| | - Kenji Sakuma
- Department of Psychiatry, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan,
| | - Makoto Okuya
- Department of Psychiatry, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan,
| | - Yuki Matsuda
- Department of Psychiatry, Jikei University School of Medicine, Minato-ku, Tokyo105-8461, Japan
| | - Kiyoshi Fujita
- Department of Psychiatry, Okehazama hospital, Toyoake, Aichi 470-1168, Japan
| | | | - Reiji Yoshimura
- Department of Psychiatry, University of Occupational and Environmental Health, Yahatanishi-ku, Kitakyushu, Fukuoka 807-8555, Japan
| | - Nakao Iwata
- Department of Psychiatry, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan,
| |
Collapse
|