{"title":"Novel pharmaceutical treatment approaches for schizophrenia: a systematic literature review.","authors":"Anan Jarab, Walid Al-Qerem, Adam Khdour, Heba Awadallah, Yousef Mimi, Maher Khdour","doi":"10.1007/s00228-025-03809-7","DOIUrl":null,"url":null,"abstract":"<p><strong>Purpose: </strong>Schizophrenia is a chronic and debilitating neuropsychiatric disorder affecting approximately 1% of the global population. Traditional antipsychotic treatments, while effective for positive symptoms, often have significant side effects and fail to address cognitive and negative symptoms. Novel pharmacological treatments targeting muscarinic receptors, TAAR1 agonists, serotonergic pathways, and glutamate modulation have emerged as promising alternatives.</p><p><strong>Aim: </strong>This systematic literature review aims to critically evaluate the efficacy, safety, and mechanisms of action of novel pharmacological agents in the treatment of schizophrenia.</p><p><strong>Methods: </strong>A comprehensive search was conducted across PubMed, Embase, Cochrane Library, Scopus, and Web of Science for randomized controlled trials (RCTs) and clinical trials published between April 2014 and March 2024. Studies evaluating novel treatments targeting muscarinic receptors, TAAR1 agonists, serotonergic agents, and glutamate modulation were included. Primary outcomes focused on symptom reduction and quality of life, while secondary outcomes included cognitive function and adverse events. The Joanna Briggs Institute (JBI) tool was used for quality assessment.</p><p><strong>Results: </strong>Eleven studies involving 4614 participants (mean age 37-43 years, predominantly male) were included. Drugs evaluated included xanomeline-trospium (KarXT), pimavanserin, ulotaront, emraclidine, and bitopertin. Significant improvements in PANSS and CGI-S scores were observed, with xanomeline-trospium showing a mean reduction of 17.4 points (p < 0.001). Adverse events were mostly mild and transient, with nausea, constipation, and somnolence being common.</p><p><strong>Conclusion: </strong>Novel treatments for schizophrenia show promise in managing both positive and negative symptoms, with generally favorable safety profiles. Future studies should focus on large-scale, long-term trials to refine their efficacy, safety, and clinical applicability.</p>","PeriodicalId":11857,"journal":{"name":"European Journal of Clinical Pharmacology","volume":" ","pages":"525-541"},"PeriodicalIF":2.4000,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"European Journal of Clinical Pharmacology","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1007/s00228-025-03809-7","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/2/14 0:00:00","PubModel":"Epub","JCR":"Q3","JCRName":"PHARMACOLOGY & PHARMACY","Score":null,"Total":0}
引用次数: 0
Abstract
Purpose: Schizophrenia is a chronic and debilitating neuropsychiatric disorder affecting approximately 1% of the global population. Traditional antipsychotic treatments, while effective for positive symptoms, often have significant side effects and fail to address cognitive and negative symptoms. Novel pharmacological treatments targeting muscarinic receptors, TAAR1 agonists, serotonergic pathways, and glutamate modulation have emerged as promising alternatives.
Aim: This systematic literature review aims to critically evaluate the efficacy, safety, and mechanisms of action of novel pharmacological agents in the treatment of schizophrenia.
Methods: A comprehensive search was conducted across PubMed, Embase, Cochrane Library, Scopus, and Web of Science for randomized controlled trials (RCTs) and clinical trials published between April 2014 and March 2024. Studies evaluating novel treatments targeting muscarinic receptors, TAAR1 agonists, serotonergic agents, and glutamate modulation were included. Primary outcomes focused on symptom reduction and quality of life, while secondary outcomes included cognitive function and adverse events. The Joanna Briggs Institute (JBI) tool was used for quality assessment.
Results: Eleven studies involving 4614 participants (mean age 37-43 years, predominantly male) were included. Drugs evaluated included xanomeline-trospium (KarXT), pimavanserin, ulotaront, emraclidine, and bitopertin. Significant improvements in PANSS and CGI-S scores were observed, with xanomeline-trospium showing a mean reduction of 17.4 points (p < 0.001). Adverse events were mostly mild and transient, with nausea, constipation, and somnolence being common.
Conclusion: Novel treatments for schizophrenia show promise in managing both positive and negative symptoms, with generally favorable safety profiles. Future studies should focus on large-scale, long-term trials to refine their efficacy, safety, and clinical applicability.
期刊介绍:
The European Journal of Clinical Pharmacology publishes original papers on all aspects of clinical pharmacology and drug therapy in humans. Manuscripts are welcomed on the following topics: therapeutic trials, pharmacokinetics/pharmacodynamics, pharmacogenetics, drug metabolism, adverse drug reactions, drug interactions, all aspects of drug development, development relating to teaching in clinical pharmacology, pharmacoepidemiology, and matters relating to the rational prescribing and safe use of drugs. Methodological contributions relevant to these topics are also welcomed.
Data from animal experiments are accepted only in the context of original data in man reported in the same paper. EJCP will only consider manuscripts describing the frequency of allelic variants in different populations if this information is linked to functional data or new interesting variants. Highly relevant differences in frequency with a major impact in drug therapy for the respective population may be submitted as a letter to the editor.
Straightforward phase I pharmacokinetic or pharmacodynamic studies as parts of new drug development will only be considered for publication if the paper involves
-a compound that is interesting and new in some basic or fundamental way, or
-methods that are original in some basic sense, or
-a highly unexpected outcome, or
-conclusions that are scientifically novel in some basic or fundamental sense.