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Lenk HÇ, Smith RL, O'Connell KS, Andreassen OA, Molden E. Rapid Metabolism Underlying Subtherapeutic Serum Levels of Atypical Antipsychotics Preceding Clozapine Treatment: A Retrospective Analysis of Real-World Data. CNS Drugs 2024; 38:473-480. [PMID: 38635089 PMCID: PMC11098931 DOI: 10.1007/s40263-024-01079-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/29/2024] [Indexed: 04/19/2024]
Abstract
INTRODUCTION Adequate antipsychotic treatment intensity is required before diagnosing resistant schizophrenia and initiating clozapine treatment. We aimed to investigate potential rapid drug metabolism underlying low dose-adjusted serum concentration (CD) of non-clozapine atypical antipsychotics preceding clozapine treatment. METHODS Patients using non-clozapine, atypical antipsychotics (aripiprazole, risperidone, olanzapine, or quetiapine) within 1 year before starting clozapine were included in this study from a therapeutic drug monitoring service in Oslo, Norway, between 2005 and 2023. Patients were assigned into low CD (LCD) and normal CD (NCD) subgroups. Using a reference sample with 147,964 antipsychotic measurements, LCD was defined as CDs below the 25th percentile, while patients with NCD exhibited CDs between the 25th and 75th percentile of the respective reference measurements. Metabolic ratios, doses, and frequency of subtherapeutic levels of non-clozapine antipsychotics were compared between LCD and NCD groups. RESULTS Preceding clozapine treatment, 110 out of 272 included patients (40.4%) were identified with LCD. Compared with the NCD group, LCD patients exhibited higher metabolic ratios of olanzapine (1.5-fold; p < 0.001), quetiapine (3.0-fold; p < 0.001), and risperidone (6.0-fold; p < 0.001). Metabolic ratio differences were independent of smoking and CYP2D6 genotype for olanzapine (p = 0.008) and risperidone (p = 0.016), respectively. Despite higher doses of olanzapine (1.25-fold; p = 0.054) and quetiapine (1.6-fold; p = 0.001) in LCD versus NCD patients, faster metabolism among the former was accompanied by higher frequencies of subtherapeutic levels of olanzapine (3.3-fold; p = 0.044) and quetiapine (1.8-fold; p = 0.005). CONCLUSION LCD and associated rapid metabolism of non-clozapine antipsychotics is frequent before starting clozapine treatment. For olanzapine and quetiapine, this is associated with significantly increased risk of having subtherapeutic concentrations.
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Affiliation(s)
- Hasan Çağın Lenk
- Center for Psychopharmacology, Diakonhjemmet Hospital, Vinderen, PO Box 85, 0319, Oslo, Norway.
- Section for Pharmacology and Pharmaceutical Biosciences, Department of Pharmacy, University of Oslo, Oslo, Norway.
- Division of Mental Health and Addiction, NORMENT, Centre for Mental Disorders Research, Institute of Clinical Medicine, Oslo University Hospital, University of Oslo, Oslo, Norway.
| | - Robert Løvsletten Smith
- Center for Psychopharmacology, Diakonhjemmet Hospital, Vinderen, PO Box 85, 0319, Oslo, Norway
| | - Kevin S O'Connell
- Division of Mental Health and Addiction, NORMENT, Centre for Mental Disorders Research, Institute of Clinical Medicine, Oslo University Hospital, University of Oslo, Oslo, Norway
| | - Ole A Andreassen
- Division of Mental Health and Addiction, NORMENT, Centre for Mental Disorders Research, Institute of Clinical Medicine, Oslo University Hospital, University of Oslo, Oslo, Norway
- KG Jebsen Centre for Neurodevelopmental disorders, University of Oslo, Oslo University Hospital, Oslo, Norway
| | - Espen Molden
- Center for Psychopharmacology, Diakonhjemmet Hospital, Vinderen, PO Box 85, 0319, Oslo, Norway
- Section for Pharmacology and Pharmaceutical Biosciences, Department of Pharmacy, University of Oslo, Oslo, Norway
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Biso L, Aringhieri S, Carli M, Scarselli M, Longoni B. Therapeutic Drug Monitoring in Psychiatry: Enhancing Treatment Precision and Patient Outcomes. Pharmaceuticals (Basel) 2024; 17:642. [PMID: 38794212 PMCID: PMC11124530 DOI: 10.3390/ph17050642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 05/09/2024] [Accepted: 05/14/2024] [Indexed: 05/26/2024] Open
Abstract
Psychiatric disorders often require pharmacological interventions to alleviate symptoms and improve quality of life. However, achieving an optimal therapeutic outcome is challenging due to several factors, including variability in the individual response, inter-individual differences in drug metabolism, and drug interactions in polytherapy. Therapeutic drug monitoring (TDM), by measuring drug concentrations in biological samples, represents a valuable tool to address these challenges, by tailoring medication regimens to each individual. This review analyzes the current landscape of TDM in psychiatric practice, highlighting its significance in optimizing drug dosages, minimizing adverse effects, and improving therapeutic efficacy. The metabolism of psychiatric medications (i.e., mood stabilizers, antipsychotics, antidepressants) often exhibits significant inter-patient variability. TDM can help address this variability by enhancing treatment personalization, facilitating early suboptimal- or toxic-level detection, and allowing for timely interventions to prevent treatment failure or adverse effects. Furthermore, this review briefly discusses technological advancements and analytical methods supporting the implementation of TDM in psychiatric settings. These innovations enable quick and cost-effective drug concentration measurements, fostering the widespread adoption of TDM as a routine practice in psychiatric care. In conclusion, the integration of TDM in psychiatry can improve treatment outcomes by individualizing medication regimens within the so-called precision medicine.
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Affiliation(s)
- Letizia Biso
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy; (L.B.); (M.C.); (M.S.)
| | - Stefano Aringhieri
- Mental Health and Pathological Addiction Department, AUSL Romagna Forlì-Cesena, 47121 Forlì, Italy;
| | - Marco Carli
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy; (L.B.); (M.C.); (M.S.)
| | - Marco Scarselli
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy; (L.B.); (M.C.); (M.S.)
| | - Biancamaria Longoni
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy; (L.B.); (M.C.); (M.S.)
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Sattaf F, Scherf-Clavel M, Unterecker S, Reif A, Hahn M. Recommendation for a Therapeutic Reference Range of Cariprazine-A Short Communication. Ther Drug Monit 2024; 46:270-273. [PMID: 38018849 DOI: 10.1097/ftd.0000000000001152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 09/19/2023] [Indexed: 11/30/2023]
Abstract
BACKGROUND Therapeutic reference ranges are essential for therapeutic drug monitoring to evaluate results and adjust pharmacotherapy. The measured serum concentrations of cariprazine-treated patients have frequently been found to lie beyond the currently used therapeutic reference range; furthermore, reliable data for establishing evidence-based therapeutic ranges are scarce. The current therapeutic reference ranges have only been estimated; however, real-world data on cariprazine are missing. Individual serum concentrations were analyzed, and the validity of the currently used reference ranges was assessed. METHODS Serum concentrations of 19 psychiatric patients treated with cariprazine without pharmacokinetic abnormalities were retrospectively analyzed. Only the last measurement per patient was included in the analysis, and patients who underwent a dose adjustment in the subsequent 2 weeks after sampling were excluded (assuming that the target dose and response had been achieved at that time). Serum concentrations were compared with the therapeutic reference range (10-20 ng/mL) of the Arbeitsgemeinschaft für Neuropsychiatrie und Pharmakotherapie consensus guidelines of 2017 and with a recent recommendation for a lower therapeutic reference range (5-15 ng/mL). RESULTS The mean serum concentration was 9.1 ± 4.1 SD ng/mL. A total of 47.4% of the values were within the therapeutic reference range of 10-20 ng/mL, and 78.9% fell within the range of 5-15 ng/mL. CONCLUSIONS These results support previous recommendations for lowering the therapeutic reference range to 5-15 ng/mL. The calculated therapeutic reference range was 5.0-13.2 ng/mL. It may even be potentially lower because clinicians may have tried to titrate the dose to a serum concentration within the current therapeutic reference range of 10-20 ng/mL.
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Affiliation(s)
- Fabian Sattaf
- Department of Psychiatry, Psychosomatics and Psychotherapy, University Hospital, Frankfurt am Main
| | - Maike Scherf-Clavel
- Department of Psychiatry, Psychosomatics and Psychotherapy, Center of Mental Health, University Hospital of Würzburg, Würzburg; and
| | - Stefan Unterecker
- Department of Psychiatry, Psychosomatics and Psychotherapy, Center of Mental Health, University Hospital of Würzburg, Würzburg; and
| | - Andreas Reif
- Department of Psychiatry, Psychosomatics and Psychotherapy, University Hospital, Frankfurt am Main
| | - Martina Hahn
- Department of Psychiatry, Psychosomatics and Psychotherapy, University Hospital, Frankfurt am Main
- Department of Mental Health, Varisano Hospital Frankfurt Hoechst, Frankfurt am Main, Germany
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Bhavsar NC, Dopheide JA, Botello TE, Wang M. Therapeutic Drug Level Monitoring of Antipsychotics at an Inpatient Psychiatric Hospital. Ther Drug Monit 2024; 46:210-216. [PMID: 38018824 DOI: 10.1097/ftd.0000000000001156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 09/13/2023] [Indexed: 11/30/2023]
Abstract
BACKGROUND The American Psychiatric Association guidelines for the treatment of patients with schizophrenia state that the utility of antipsychotic therapeutic drug monitoring (TDM) remains unclear, except for clozapine or assessing adherence. The aim of this study was to investigate the extent and impact of antipsychotic TDM in inpatient practice to improve its utilization. METHODS Patients with antipsychotic blood levels drawn between May 1, 2021 and January 31, 2023 were invited to consent for retrospective chart data analysis to determine the influence of antipsychotic blood levels on their treatment. Approximately 42% of patients consented. Data collected from the patients' electronic medical records included age, ethnicity, race, sex, diagnosis, comorbidities, adverse drug reactions, medications, doses and frequency, antipsychotics and levels, laboratory values, and treatment history. Comparisons were made between antipsychotic levels that were within and outside the therapeutic range and the status of antipsychotic regimen adjustments. RESULTS A total of 135 antipsychotic levels from 40 inpatients were analyzed. Approximately 48% of the levels were appropriately drawn, whereas 52% were inappropriately drawn. Clozapine had the highest TDM rate (59%) and the most common diagnoses were schizophrenia (45%) and schizoaffective disorder (32.5%). More levels were appropriately drawn for clozapine (47.3% versus 24.3%) than for risperidone (41% versus 46.2%). Appropriately drawn clozapine levels correlated with higher daily doses and levels at or above the therapeutic threshold of 350 ng/mL. CONCLUSIONS Most antipsychotic drug levels were inappropriately drawn, emphasizing the complexity and potential for errors in TDM. Although more patients were prescribed risperidone, clozapine had the highest TDM rate. Clinicians were more likely to keep antipsychotic regimens unchanged for appropriately drawn levels and adjust doses for inappropriately drawn levels.
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Affiliation(s)
| | - Julie Ann Dopheide
- USC Titus Department of Clinical Pharmacy Los Angeles, California; and
- USC Department of Psychiatry and the Behavioral Sciences, Los Angeles, California
| | | | - Mengxi Wang
- USC Titus Department of Clinical Pharmacy Los Angeles, California; and
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Scherf-Clavel M, Baumann P, Hart XM, Schneider H, Schoretsanitis G, Steimer W, Zernig G, Zurek G. Behind the Curtain: Therapeutic Drug Monitoring of Psychotropic Drugs from a Laboratory Analytical Perspective. Ther Drug Monit 2024; 46:143-154. [PMID: 36941240 DOI: 10.1097/ftd.0000000000001092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
PURPOSE Therapeutic drug monitoring (TDM) is a well-established tool for guiding psychopharmacotherapy and improving patient care. Despite their established roles in the prescription of psychotropic drugs, the "behind the curtain" processes of TDM requests are invariably obscure to clinicians, and literature addressing this topic is scarce. METHODS In the present narrative review, we provide a comprehensive overview of the various steps, starting from requesting TDM to interpreting TDM findings, in routine clinical practice. Our goal was to improve clinicians' insights into the numerous factors that may explain the variations in TDM findings due to methodological issues. RESULTS We discussed challenges throughout the TDM process, starting from the analyte and its major variation forms, through sampling procedures and pre-analytical conditions, time of blood sampling, sample matrices, and collection tubes, to analytical methods, their advantages and shortcomings, and the applied quality procedures. Additionally, we critically reviewed the current and future advances in the TDM of psychotropic drugs. CONCLUSIONS The "behind the curtain" processes enabling TDM involve a multidisciplinary team, which faces numerous challenges in clinical routine. A better understanding of these processes will allow clinicians to join the efforts for achieving higher-quality TDM findings, which will in turn improve treatment effectiveness and safety outcomes of psychotropic agents.
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Affiliation(s)
- Maike Scherf-Clavel
- Department of Psychiatry, Psychosomatics and Psychotherapy, University Hospital of Würzburg, Germany
- Arbeitsgemeinschaft für Neuropsychopharmakologie und Pharmakopsychiatrie (AGNP) Work Group on "Therapeutic Drug Monitoring" (Chair: Prof. Dr Med. Dipl.-Psych. Stefan Unterecker, Department of Psychiatry, Psychosomatics and Psychotherapy, University Hospital of Würzburg, Germany)
| | - Pierre Baumann
- Arbeitsgemeinschaft für Neuropsychopharmakologie und Pharmakopsychiatrie (AGNP) Work Group on "Therapeutic Drug Monitoring" (Chair: Prof. Dr Med. Dipl.-Psych. Stefan Unterecker, Department of Psychiatry, Psychosomatics and Psychotherapy, University Hospital of Würzburg, Germany)
- German Society for Clinical Chemistry and Laboratory Medicine e. V. (DGKL), Section Therapeutic Drug Monitoring and Clinical Toxicology, Berlin/Bonn, Germany
| | - Xenia M Hart
- Arbeitsgemeinschaft für Neuropsychopharmakologie und Pharmakopsychiatrie (AGNP) Work Group on "Therapeutic Drug Monitoring" (Chair: Prof. Dr Med. Dipl.-Psych. Stefan Unterecker, Department of Psychiatry, Psychosomatics and Psychotherapy, University Hospital of Würzburg, Germany)
- Department of Molecular Neuroimaging, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Heike Schneider
- Arbeitsgemeinschaft für Neuropsychopharmakologie und Pharmakopsychiatrie (AGNP) Work Group on "Therapeutic Drug Monitoring" (Chair: Prof. Dr Med. Dipl.-Psych. Stefan Unterecker, Department of Psychiatry, Psychosomatics and Psychotherapy, University Hospital of Würzburg, Germany)
- Institute of Clinical Chemistry and Pathobiochemistry, Technical University Munich, Munich, Germany
- German Society for Clinical Chemistry and Laboratory Medicine e. V. (DGKL), Section Therapeutic Drug Monitoring and Clinical Toxicology, Berlin/Bonn
- INSTAND e.V. Society for Promoting Quality Assurance in Medical Laboratories, Duesseldorf, Germany
- German Society for Clinical Chemistry and Laboratory Medicine e. V. (DGKL), Section Therapeutic Drug Monitoring and Clinical Toxicology, Berlin/Bonn, Germany
| | - Georgios Schoretsanitis
- Arbeitsgemeinschaft für Neuropsychopharmakologie und Pharmakopsychiatrie (AGNP) Work Group on "Therapeutic Drug Monitoring" (Chair: Prof. Dr Med. Dipl.-Psych. Stefan Unterecker, Department of Psychiatry, Psychosomatics and Psychotherapy, University Hospital of Würzburg, Germany)
- Department of Psychiatry, The Zucker Hillside Hospital, Northwell Health, Glen Oaks, New York
- Department of Psychiatry, Zucker School of Medicine at Northwell/Hofstra, Hempstead, New York
- Department of Psychiatry, Psychotherapy and Psychosomatics, Hospital of Psychiatry, University of Zurich, Zurich, Switzerland
| | - Werner Steimer
- Arbeitsgemeinschaft für Neuropsychopharmakologie und Pharmakopsychiatrie (AGNP) Work Group on "Therapeutic Drug Monitoring" (Chair: Prof. Dr Med. Dipl.-Psych. Stefan Unterecker, Department of Psychiatry, Psychosomatics and Psychotherapy, University Hospital of Würzburg, Germany)
- Institute of Clinical Chemistry and Pathobiochemistry, Technical University Munich, Munich, Germany
- German Society for Clinical Chemistry and Laboratory Medicine e. V. (DGKL), Section Therapeutic Drug Monitoring and Clinical Toxicology, Berlin/Bonn
| | - Gerald Zernig
- Arbeitsgemeinschaft für Neuropsychopharmakologie und Pharmakopsychiatrie (AGNP) Work Group on "Therapeutic Drug Monitoring" (Chair: Prof. Dr Med. Dipl.-Psych. Stefan Unterecker, Department of Psychiatry, Psychosomatics and Psychotherapy, University Hospital of Würzburg, Germany)
- Department of Pharmacology, Medical University of Innsbruck, Innsbruck, Austria
- Private Practice for Psychotherapy and Court-certified Expert Witness, Hall in Tirol, Austria; and
| | - Gabriela Zurek
- Arbeitsgemeinschaft für Neuropsychopharmakologie und Pharmakopsychiatrie (AGNP) Work Group on "Therapeutic Drug Monitoring" (Chair: Prof. Dr Med. Dipl.-Psych. Stefan Unterecker, Department of Psychiatry, Psychosomatics and Psychotherapy, University Hospital of Würzburg, Germany)
- Medical Laboratory Bremen, Bremen, Germany
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Mach A, Wnorowska A, Siwek M, Wojnar M, Radziwoń-Zaleska M. Clinical and pharmacological factors influencing serum clozapine and norclozapine levels. Front Pharmacol 2024; 15:1356813. [PMID: 38601469 PMCID: PMC11004283 DOI: 10.3389/fphar.2024.1356813] [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] [Received: 12/19/2023] [Accepted: 03/15/2024] [Indexed: 04/12/2024] Open
Abstract
Background Clozapine (CLO) is a very effective antipsychotic, whose use is associated with dose-dependent risk of complications. Due to high interindividual variability in CLO metabolism, there is a need to identify factors affecting the blood concentrations of CLO and its active metabolite, norclozapine (NCLO). Methods A total of 446 blood samples (collected from 233 women and 213 men, aged from 18 to 77 years) were included in this study and analyzed for CLO and NCLO concentrations. The patients were treated at a psychiatric hospital in Warsaw in the years 2016-2021. Serum CLO and NCLO concentrations were determined with high-performance liquid chromatography coupled to UV. Results The following factors were shown to increase serum CLO and NCLO levels: higher CLO dose (p < 0.001), female sex (p < 0.001), nonsmoker status (p < 0.001), the use of more than two additional psychotropic drugs (only in the case of CLO; p = 0.046), concomitant use of beta-blockers (for CLO p = 0.049; for NCLO p < 0.001), and older age (for CLO p < 0.001; for NCLO p = 0.011). Despite the use of CLO at daily doses within the recommended range (200-450 mg), the evaluated serum CLO and NCLO levels were within the therapeutic ranges in only 37% and 75% of cases, respectively, with 5.6% of cases exceeding the CLO toxicity threshold. Discussion The use of CLO at recommended doses does not guarantee achieving therapeutic concentrations of CLO or NCLO. Women and nonsmokers were at the highest risk of having toxic CLO levels.
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Affiliation(s)
- Anna Mach
- Department of Psychiatry, Medical University of Warsaw, Warsaw, Poland
| | - Anna Wnorowska
- Department of Psychiatry, Medical University of Warsaw, Warsaw, Poland
| | - Marcin Siwek
- Department of Affective Disorders, Jagiellonian University Medical College, Cracow, Poland
| | - Marcin Wojnar
- Department of Psychiatry, Medical University of Warsaw, Warsaw, Poland
- Department of Psychiatry, Addiction Center, University of Michigan, Ann Arbor, MI, United States
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Ingelman-Sundberg M, Molden E. Therapeutic drug monitoring, liquid biopsies or pharmacogenomics for prediction of human drug metabolism and response. Br J Clin Pharmacol 2024. [PMID: 38523083 DOI: 10.1111/bcp.16048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 02/14/2024] [Accepted: 02/24/2024] [Indexed: 03/26/2024] Open
Abstract
Pharmacokinetics plays a central role in understanding the significant interindividual differences that exist in drug metabolism and response. Effectively addressing these differences requires a multi-faceted approach that encompasses a variety of tools and methods. In this review, we examine three key strategies to achieve this goal, namely pharmacogenomics, therapeutic drug monitoring (TDM) and liquid biopsy-based monitoring of hepatic ADME gene expression and highlight their advantages and limitations. We note that larger cohort studies are needed to validate the utility of liquid biopsy-based assessment of hepatic ADME gene expression, which includes prediction of drug metabolism in the clinical setting. Modern mass spectrometers have improved traditional TDM methods, offering versatility and sensitivity. In addition, the identification of endogenous or dietary markers for CYP metabolic traits offers simpler and more cost-effective alternatives to determine the phenotype. We believe that future pharmacogenomic applications in clinical practice should prioritize the identification of missing heritable factors, using larger, well-characterized patient studies and controlling for confounding factors such as diet, concomitant medication and physical health. The intricate regulation of ADME gene expression implies that large-scale studies combining long-read next-generation sequencing (NGS) of complete genomes with phenotyping of patients taking different medications are essential to identify these missing heritabilities. The continuous integration of such data into AI-driven analytical systems could provide a comprehensive and useful framework. This could lead to the development of highly effective algorithms to improve genetics-based precision treatment by predicting drug metabolism and response, significantly improving clinical outcomes.
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Affiliation(s)
- Magnus Ingelman-Sundberg
- Section of Pharmacogenetics, Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Espen Molden
- Center for Psychopharmacology, Diakonhjemmet Hospital, Oslo, Norway
- Section for Pharmacology and Pharmaceutical Biosciences, Department of Pharmacy, University of Oslo, Oslo, Norway
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Géraud A, Combarel D, Funck-Brentano C, Beaulieu Q, Zahr N, Broutin S, Spano JP, Massard C, Besse B, Gougis P. A Score to Predict the Clinical Usefulness of Therapeutic Drug Monitoring: Application to Oral Molecular Targeted Therapies in Cancer. Clin Pharmacol Ther 2024. [PMID: 38389482 DOI: 10.1002/cpt.3193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 01/22/2024] [Indexed: 02/24/2024]
Abstract
Therapeutic drug monitoring (TDM) involves measuring and interpreting drug concentrations in biological fluids to adjust drug dosages. In onco-hematology, TDM guidelines for oral molecular targeted therapies (oMTTs) are varied. This study evaluates a quantitative approach with a score to predict the clinical usefulness of TDM for oMTTs. We identified key parameters for an oMTT's suitability for TDM from standard TDM recommendations. We gathered oMTT pharmacological data, which covered exposure variability (considering pharmacokinetic (PK) impact of food and proton pump inhibitors), technical intricacy (PK linearity and active metabolites), efficacy (exposure-response relationship), and safety (maximum tolerated dose, and exposure-safety relationship). To assess the validity and the relevance of the score and define relevant thresholds, we evaluated molecules with prospective validation or strong recommendations for TDM, both in oncology and in other fields. By September 1, 2021, the US Food and Drug Administration (FDA) approved 67 oMTTs for onco-hematological indications. Scores ranged from 15 (acalabrutinib) to 80 (sunitinib) with an average of 48.3 and a standard deviation of 15.6. Top scorers included sunitinib, sorafenib, cabozantinib, nilotinib, and abemaciclib. Based on scores, drugs were categorized into low (< 40), intermediate (≥ 40 and < 60), and high (≥ 60) relevance for TDM. Notably, negative controls generally scored around or under 40, whereas positive controls had a high score across different indications. In this work, we propose a quantitative and reproducible score to compare the potential usefulness of TDM for oMTTs. Future guidelines should prioritize the TDM for molecules with the highest score.
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Affiliation(s)
- Arthur Géraud
- Department of Cancer Medicine, Gustave Roussy, Villejuif, France
- Early Drug Development Department (DITEP), Gustave Roussy, Villejuif, France
- Paris-Saclay University, Orsay, France
| | - David Combarel
- Pharmacology Department, Gustave Roussy, Villejuif, France
- Faculty of Pharmacy, Paris-Saclay University, Chatenay-Malabry, France
| | - Christian Funck-Brentano
- Department of Pharmacology and Clinical Investigation Center (CIC-1901), AP-HP.Sorbonne Université, Pitié-Salpêtrière Hospital, INSERM, CIC-1901 and UMR-S 1166, Sorbonne Université Médecine, Paris, France
| | - Quentin Beaulieu
- Department of Pharmacology and Clinical Investigation Center (CIC-1901), AP-HP.Sorbonne Université, Pitié-Salpêtrière Hospital, INSERM, CIC-1901 and UMR-S 1166, Sorbonne Université Médecine, Paris, France
| | - Noël Zahr
- Department of Pharmacology and Clinical Investigation Center (CIC-1901), AP-HP.Sorbonne Université, Pitié-Salpêtrière Hospital, INSERM, CIC-1901 and UMR-S 1166, Sorbonne Université Médecine, Paris, France
| | - Sophie Broutin
- Pharmacology Department, Gustave Roussy, Villejuif, France
| | - Jean-Philippe Spano
- Oncology Department, APHP-Sorbonne Université, Cancer Institute (IUC), Paris, France
- INSERM, UMRS 1136, Paris, France
| | - Christophe Massard
- Early Drug Development Department (DITEP), Gustave Roussy, Villejuif, France
- Centre Eugène Marquis, Rennes, France
| | - Benjamin Besse
- Department of Cancer Medicine, Gustave Roussy, Villejuif, France
- Paris-Saclay University, Orsay, France
| | - Paul Gougis
- Department of Pharmacology and Clinical Investigation Center (CIC-1901), AP-HP.Sorbonne Université, Pitié-Salpêtrière Hospital, INSERM, CIC-1901 and UMR-S 1166, Sorbonne Université Médecine, Paris, France
- Oncology Department, APHP-Sorbonne Université, Cancer Institute (IUC), Paris, France
- Residual Tumor & Response to Treatment Laboratory, RT2Lab, INSERM, U932 Immunity and Cancer, Curie Institute, Université Paris, Paris, France
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Kane JM, Schoretsanitis G, Rubio JM, Correll CU. Clozapine in treatment-resistant schizophrenia: Reflections from the Hallmark US clinical trial and beyond. Schizophr Res 2024:S0920-9964(24)00035-5. [PMID: 38290942 DOI: 10.1016/j.schres.2024.01.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 01/22/2024] [Accepted: 01/23/2024] [Indexed: 02/01/2024]
Affiliation(s)
- John M Kane
- The Zucker Hillside Hospital, Department of Psychiatry, Northwell Health, Glen Oaks, NY, USA; The Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Department of Psychiatry and Molecular Medicine, Hempstead, NY, USA; The Feinstein Institute for Medical Research, Center for Psychiatric Neuroscience, Manhasset, NY, USA
| | - Georgios Schoretsanitis
- The Zucker Hillside Hospital, Department of Psychiatry, Northwell Health, Glen Oaks, NY, USA; The Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Department of Psychiatry and Molecular Medicine, Hempstead, NY, USA; The Feinstein Institute for Medical Research, Center for Psychiatric Neuroscience, Manhasset, NY, USA; Department of Psychiatry, Psychotherapy and Psychosomatics, Hospital of Psychiatry, University of Zurich, Zurich, Switzerland.
| | - Jose M Rubio
- The Zucker Hillside Hospital, Department of Psychiatry, Northwell Health, Glen Oaks, NY, USA; The Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Department of Psychiatry and Molecular Medicine, Hempstead, NY, USA; The Feinstein Institute for Medical Research, Center for Psychiatric Neuroscience, Manhasset, NY, USA
| | - Christoph U Correll
- The Zucker Hillside Hospital, Department of Psychiatry, Northwell Health, Glen Oaks, NY, USA; The Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Department of Psychiatry and Molecular Medicine, Hempstead, NY, USA; The Feinstein Institute for Medical Research, Center for Psychiatric Neuroscience, Manhasset, NY, USA; Department of Child and Adolescent Psychiatry, Charité Universitätsmedizin, Berlin, Germany; German Center for Mental Health (DZPG), partner site Berlin, Germany
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10
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Hach I, Bertsch T, Nonell P. The prevalence of off-label use and supratherapeutic blood levels of outpatient psychotropic medication in suicidal adolescents. Front Psychiatry 2024; 14:1240681. [PMID: 38298931 PMCID: PMC10827976 DOI: 10.3389/fpsyt.2023.1240681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Accepted: 12/20/2023] [Indexed: 02/02/2024] Open
Abstract
Introduction Adolescents with mental disorders show an increased risk of suicidal phenomena. Vice versa, suicidality is a serious adverse event of psychotropic drug therapy in adolescents. There are only a few new psychotropic agents approved for this young age group. We evaluated the (pre-pandemic) prevalence of off-label use as well as detailed blood concentrations of outpatient psychotropic medication and sex differences in a clinical population of suicidal adolescents. Methods The urine presence and serum levels of psychotropic substances of adolescents hospitalized due to their acute suicidality but without a known actual suicide attempt (i.e., no acute intoxication or serious self-injuries) were investigated routinely between 01.03.2017 and 31.01.2018. Urine (N = 205) and blood samples (N = 193) were taken at the beginning of closed inpatient admission, i.e., the results of the laboratory analysis reflect outpatient drug intake. The serum levels of psychopharmacological medication and OTC medication were measured. Results Our sample consists of 231 cases (boys: N = 54; girls: N = 177, ratio: 1:3.3), aged 12-17 years (average age: 15,4 years). The most prevalent psychiatric diagnoses were depressive episodes (54%) and adjustment disorders (25%), and girls were more often diagnosed with depressive disorders than boys (boy/girl ratio: 1:9.5, p < 0.0001). More than half of adolescents (56%) used at least one prescribed psychotropic drug at admission (24.8% ≥ two psychotropic drugs). Off-label use of second-generation antipsychotics was significantly more frequent than off-label use of antidepressants (85% vs. 31%, p < 0.01). Adolescents suffering from depressive disorders were significantly more often on-label treated than adolescents with neurotic or stress-related disorders (56% vs. 10%). Female cases with prescribed psychotropic drug use showed significantly more frequent supratherapeutic drug levels than male cases (5% vs. 27%, p < 0.05). Conclusion Female adolescents may have an increased risk of supratherapeutic blood levels, especially when outpatient prescribed psychotropic drugs are off-label used. Measurement of blood levels of outpatient-prescribed psychotropic drugs could be used to enhance the safety and efficacy of the individual psychopharmacological treatment of adolescent suicidal patients. There is an urgent need for more real-world evidence on the effective treatment of adolescents with psychotropic drugs.
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Affiliation(s)
- Isabel Hach
- Department of Education and Science, Klinikum Nürnberg, Paracelsus Medical University Nürnberg, Nürnberg, Germany
| | - Thomas Bertsch
- Institute of Clinical Chemistry, Laboratory Medicine and Transfusion Medicine, Klinikum Nürnberg, Paracelsus Medical University Nürnberg, Nürnberg, Germany
| | - Patrick Nonell
- Clinic of Child and Adolescent Psychiatry and Psychotherapy, Klinikum Nürnberg, Paracelsus Medical University Nürnberg, Nürnberg, Germany
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Fernández-Miranda JJ, Díaz-Fernández S, Cepeda-Piorno FJ, López-Muñoz F. Long-Acting Injectable Second-Generation Antipsychotics in Seriously Ill Patients with Schizophrenia: Doses, Plasma Levels, and Treatment Outcomes. Biomedicines 2024; 12:165. [PMID: 38255270 PMCID: PMC10813024 DOI: 10.3390/biomedicines12010165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 01/02/2024] [Accepted: 01/09/2024] [Indexed: 01/24/2024] Open
Abstract
This research studies the dose-plasma level (PL) relationship of second-generation antipsychotics, together with the treatment outcomes achieved, in seriously ill people with schizophrenia. An observational, prospective, one-year follow-up study was carried out with patients (N = 68) with severe schizophrenia treated with paliperidone three-month (PP3M) or aripiprazole one-month (ARIM). Participants were divided into standard-dose or high-dose groups. PLs were divided into "standard PL" and "high PL" (above the therapeutic reference range, TRR) groups. The dose/PL relationship, and severity, hospitalizations, tolerability, compliance, and their relationship with doses and PLs were evaluated. There was no clear linear relationship between ARIM or PP3M doses and the PLs achieved. In half of the subjects, standard doses reached PLs above the TRR. The improvements in clinical outcomes (decrease in clinical severity and relapses) were related to high PLs, without worse treatment tolerability or adherence. All participants remained in the study, regardless of dose or PL. Clinical severity and hospitalizations decreased significantly more in those patients with high PLs. Considering the non-linear dose-PL relationship of ARIM and PP3M in people with severe schizophrenia, PLs above the TRR are linked to better treatment outcomes, without worse tolerability. The need in a notable number of cases for high doses to reach those effective PLs is highlighted.
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Affiliation(s)
- Juan José Fernández-Miranda
- Cabueñes Universitary Hospital, Asturian Health Service (SESPA), 33394 Gijón, Spain; (S.D.-F.); (F.J.C.-P.)
- Asturian Health Research Institute (ISPA), 33011 Oviedo, Spain
| | - Silvia Díaz-Fernández
- Cabueñes Universitary Hospital, Asturian Health Service (SESPA), 33394 Gijón, Spain; (S.D.-F.); (F.J.C.-P.)
- Asturian Health Research Institute (ISPA), 33011 Oviedo, Spain
| | - Francisco Javier Cepeda-Piorno
- Cabueñes Universitary Hospital, Asturian Health Service (SESPA), 33394 Gijón, Spain; (S.D.-F.); (F.J.C.-P.)
- Asturian Health Research Institute (ISPA), 33011 Oviedo, Spain
| | - Francisco López-Muñoz
- Health Sciences Faculty, Camilo José Cela University, 28692 Madrid, Spain;
- Neuropsychopharmacology Unit, 12 de Octubre Hospital Research Institute, 28041 Madrid, Spain
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12
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Krejčí V, Murínová I, Slanař O, Šíma M. Evidence for Therapeutic Drug Monitoring of Atypical Antipsychotics. Prague Med Rep 2024; 125:101-129. [PMID: 38761044 DOI: 10.14712/23362936.2024.10] [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] [Indexed: 05/20/2024] Open
Abstract
Second-generation antipsychotics (SGAs), also known as atypical antipsychotics, are a newer class of antipsychotic drugs used to treat schizophrenia, bipolar disorder, and related psychiatric conditions. The plasma concentration of antipsychotic drugs is a valid measure of the drug at its primary target structure in the brain, and therefore determines the efficacy and safety of these drugs. However, despite the well-known high variability in pharmacokinetics of these substances, psychiatric medication is usually administered in uniform dosage schedules. Therapeutic drug monitoring (TDM), as the specific method that can help personalised medicine in dose adjustment according to the characteristics of the individual patient, minimizing the risk of toxicity, monitoring adherence, and increasing cost-effectiveness in the treatment, thus seems to be an elegant tool to solve this problem. Non-response to therapeutic doses, uncertain adherence to medication, suboptimal tolerability, or pharmacokinetic drug-drug interactions are typical indications for TDM of SGAs. This review aims to summarize an overview of the current knowledge and evidence of the possibilities to tailor the dosage of selected SGAs using TDM, including the necessary pharmacokinetic parameters for personalised pharmacotherapy.
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Affiliation(s)
- Veronika Krejčí
- Department of Clinical Pharmacy, Military University Hospital Prague, Prague, Czech Republic.
- Institute of Pharmacology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic.
| | - Irena Murínová
- Department of Applied Pharmacy, Faculty of Pharmacy, Masaryk University, Brno, Czech Republic
- Department of Clinical Pharmacy, Military University Hospital Prague, Prague, Czech Republic
| | - Ondřej Slanař
- Institute of Pharmacology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Martin Šíma
- Institute of Pharmacology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
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Konecki C, Hadjoudj J, Tralongo F, Haudecoeur C, Gozalo C, Fouley A, Marty H, Feliu C, Djerada Z. Simultaneous quantification of 55 psychotropic drugs and metabolites in human plasma with a fast UPLC-MS/MS method. Biomed Pharmacother 2023; 169:115918. [PMID: 38007935 DOI: 10.1016/j.biopha.2023.115918] [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: 08/03/2023] [Revised: 11/14/2023] [Accepted: 11/20/2023] [Indexed: 11/28/2023] Open
Abstract
OBJECTIVES Therapeutic drug monitoring is strongly recommended for psychotropic drugs, which present a strong inter- and intra-individual variability due to multiple factors like inflammatory state, smoking, diet, drug interactions due to polypharmacy, and genetic profile. The aim of this study was to develop and validate a fast, simple, and sensitive method allowing the simultaneous quantification of a large number of psychotropic drugs. METHODS After a simple sample preparation with a one-step protein precipitation, a total of 55 compounds, including 22 antidepressants, 18 antipsychotics, 2 other psychotropic drugs (bupropion and nefopam), and their metabolites, was separated on a Waters Acquity HSS T3 ultra-performance liquid chromatography column, and subsequently detected and quantified by a triple quadrupole Quantis mass spectrometer with electrospray ionization operated in positive mode. RESULTS Total run time was only 5.7 min. Limits of detection ranged from 0.01 to 0.18 µg/L depending on compound. Measuring ranges were from 0.195 to 1000 µg/L depending on compound, and were defined according to therapeutic ranges. Inter- and intra-assay precisions values were less than 15 %. After validation, this method was successfully applied in daily practice for therapeutic drug monitoring of polymedicated psychiatric patients. CONCLUSION We developed and validated one of the most sensitive and complete UPLC-MS/MS methods in psychopharmacology, allowing the simultaneous determination of 55 psychotropic drugs in only 5.7 min after a simple sample preparation. This method has been successfully used in daily practice for therapeutic drug monitoring of psychiatric patients and is especially useful in polymedicated patients.
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Affiliation(s)
- Celine Konecki
- Department of Pharmacology, EA 3801, SFR CAP-Santé, Reims Champagne-Ardenne University, 51 Rue Cognacq-Jay, 51095 Reims, France; Laboratory of Pharmacology and Toxicology, Reims University Hospital Centre, Rue du General Koenig, 51100 Reims, France
| | - Jed Hadjoudj
- Laboratory of Pharmacology and Toxicology, Reims University Hospital Centre, Rue du General Koenig, 51100 Reims, France
| | - Federica Tralongo
- Laboratory of Pharmacology and Toxicology, Reims University Hospital Centre, Rue du General Koenig, 51100 Reims, France
| | - Cyril Haudecoeur
- Laboratory of Pharmacology and Toxicology, Reims University Hospital Centre, Rue du General Koenig, 51100 Reims, France
| | - Claire Gozalo
- Laboratory of Pharmacology and Toxicology, Reims University Hospital Centre, Rue du General Koenig, 51100 Reims, France
| | - Aurelie Fouley
- Department of Pharmacology, EA 3801, SFR CAP-Santé, Reims Champagne-Ardenne University, 51 Rue Cognacq-Jay, 51095 Reims, France; Laboratory of Pharmacology and Toxicology, Reims University Hospital Centre, Rue du General Koenig, 51100 Reims, France
| | - Helene Marty
- Department of Pharmacology, EA 3801, SFR CAP-Santé, Reims Champagne-Ardenne University, 51 Rue Cognacq-Jay, 51095 Reims, France; Laboratory of Pharmacology and Toxicology, Reims University Hospital Centre, Rue du General Koenig, 51100 Reims, France
| | - Catherine Feliu
- Department of Pharmacology, EA 3801, SFR CAP-Santé, Reims Champagne-Ardenne University, 51 Rue Cognacq-Jay, 51095 Reims, France; Laboratory of Pharmacology and Toxicology, Reims University Hospital Centre, Rue du General Koenig, 51100 Reims, France
| | - Zoubir Djerada
- Department of Pharmacology, EA 3801, SFR CAP-Santé, Reims Champagne-Ardenne University, 51 Rue Cognacq-Jay, 51095 Reims, France; Laboratory of Pharmacology and Toxicology, Reims University Hospital Centre, Rue du General Koenig, 51100 Reims, France.
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Meyer JM. Making sense of norclozapine levels: 3 clinical axioms. Schizophr Res 2023:S0920-9964(23)00403-6. [PMID: 37945386 DOI: 10.1016/j.schres.2023.10.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 10/27/2023] [Accepted: 10/29/2023] [Indexed: 11/12/2023]
Abstract
Laboratories commonly provide norclozapine concentrations when a plasma clozapine level is requested, but the appropriate use of this information for the treatment of individuals with schizophrenia is not always clear. Particularly vexing is the fact that norclozapine possesses pharmacological properties that are distinct from its parent compound and which contribute to clozapine's efficacy signal, yet the literature focuses primarily on the association of clozapine levels with symptomatic improvement. The purpose of this brief article is to highlight findings with respect to the need to track norclozapine levels, or the ratio of clozapine/norclozapine plasma levels, to optimize efficacy among inadequate responders to clozapine treatment. In addition, there will be a discussion of the specific type of information provided by the clozapine/norclozapine ratio on clozapine's clearance, and how this ratio is sometimes misinterpreted. There is clinical value from to be derived from norclozapine levels and the clozapine/norclozapine ratio for schizophrenia management, and the principles governing use of this information will be distilled into 3 succinct axioms to aid clinicians in managing their clozapine-treated patients with schizophrenia.
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15
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Baumann P, Bauknecht P, Kuzin M, Schoretsanitis G. Switching antipsychotics to partial dopamine D2-agonists in individuals affected by schizophrenia: a narrative review. Int J Psychiatry Clin Pract 2023; 27:367-384. [PMID: 37428441 DOI: 10.1080/13651501.2023.2231047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 06/21/2023] [Indexed: 07/11/2023]
Abstract
OBJECTIVE The aim of this review is to analyse the literature regarding studies centred on the clinical outcome of individuals affected by schizophrenia and treated with various antipsychotics, and then switched to orally administered partial D2-dopamine agonists (PD2A): Aripiprazole (ARI), brexpiprazole (BREX) or cariprazine (CARI). METHOD A PubMed literature search was performed on 16 February 2021, and updated on Jan 26, 2022 for literature on antipsychotic switching in individuals affected by schizophrenia. Literature was included from 2002 onward. Six strategies were defined: Abrupt, gradual and cross-taper switch, and 3 hybrid strategies. The primary outcome was all-cause discontinuation rate per switch strategy per goal medication. RESULTS In 10 reports on switching to ARI, 21 studies with different strategies were described, but there were only 4 reports and 5 strategies on switching to BREX. Only one study about CARI was included, but it was not designed as a switch study. The studies are difficult to compare due to differences in methodology, previous antipsychotic medication, doses of the introduced P2DA and study duration. CONCLUSION This analysis did not reveal evidence for a preferable switching strategy. A protocol should be developed which defines optimal duration, instruments to be used, and the timing of the exams.KEY MESSAGESMost switch studies on partial D2-agonists focus on ARI, with only a few on BREX, while little is known about the clinical outcome of switching individuals to CARIThere is a wide variation of possible switch methods: Abrupt switch - gradual switch - cross-tapering switch - hybrid strategies including plateau switchThe protocols used differ considerably between the studies. A strict comparison between the studies is difficult, for which reason the present evidence does not support an unambiguous preference for a particular switch strategy.From a methodological point of view, a standardised clinical protocol should be developed to allow comparisons between studies regarding the clinical outcome of individuals switched from one antipsychotic drug to another.
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Affiliation(s)
- Pierre Baumann
- Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland
| | | | - Maxim Kuzin
- Clienia Schloessli, Private Psychiatric Hospital and Academic Teaching Hospital of the University of Zurich, Oetwil am See/Zurich, Switzerland
| | - Georgios Schoretsanitis
- Department of Psychiatry, The Zucker Hillside Hospital, Northwell Health, Glen Oaks, NY, USA
- Department of Psychiatry, Zucker School of Medicine at Northwell/Hofstra, Hempstead, NY, USA
- Department of Psychiatry, Psychotherapy and Psychosomatics, Hospital of Psychiatry, University of Zurich, Zurich, Switzerland
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16
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Brand BA, Willemse EJM, Hamers IMH, Sommer IE. Evidence-Based Recommendations for the Pharmacological Treatment of Women with Schizophrenia Spectrum Disorders. Curr Psychiatry Rep 2023; 25:723-733. [PMID: 37864676 PMCID: PMC10654163 DOI: 10.1007/s11920-023-01460-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/13/2023] [Indexed: 10/23/2023]
Abstract
PURPOSE OF REVIEW Despite clear evidence that sex differences largely impact the efficacy and tolerability of antipsychotic medication, current treatment guidelines for schizophrenia spectrum disorders (SSD) do not differentiate between men and women. This review summarizes the available evidence on strategies that may improve pharmacotherapy for women and provides evidence-based recommendations to optimize treatment for women with schizophrenia. RECENT FINDINGS We systematically searched PubMed and Embase for peer-reviewed studies on three topics: (1) sex differences in dose-adjusted antipsychotic serum concentrations, (2) hormonal augmentation therapy with estrogen and estrogen-like compounds to improve symptom severity, and (3) strategies to reduce antipsychotic-induced hyperprolactinemia. Based on three database studies and one RCT, we found higher dose-adjusted concentrations in women compared to men for most antipsychotics. For quetiapine, higher concentrations were specifically found in older women. Based on two recent meta-analyses, both estrogen and raloxifene improved overall symptomatology. Most consistent findings were found for raloxifene augmentation in postmenopausal women. No studies evaluated the effects of estrogenic contraceptives on symptoms. Based on two meta-analyses and one RCT, adjunctive aripiprazole was the best-studied and safest strategy for lowering antipsychotic-induced hyperprolactinemia. Evidence-based recommendations for female-specific pharmacotherapy for SSD consist of (1) female-specific dosing for antipsychotics (guided by therapeutic drug monitoring), (2) hormonal replacement with raloxifene in postmenopausal women, and (3) aripiprazole addition as best evidenced option in case of antipsychotic-induced hyperprolactinemia. Combining these strategies could reduce side effects and improve outcome of women with SSD, which should be confirmed in future longitudinal RCTs.
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Affiliation(s)
- Bodyl A Brand
- Department of Biomedical Sciences and Systems, Cognitive Neurosciences, University of Groningen, University Medical Center Groningen (UMCG), Neuro Imaging Center 3111, Deusinglaan 2, 9713 AW, Groningen, the Netherlands.
| | - Elske J M Willemse
- Department of Biomedical Sciences and Systems, Cognitive Neurosciences, University of Groningen, University Medical Center Groningen (UMCG), Neuro Imaging Center 3111, Deusinglaan 2, 9713 AW, Groningen, the Netherlands
| | - Iris M H Hamers
- Department of Biomedical Sciences and Systems, Cognitive Neurosciences, University of Groningen, University Medical Center Groningen (UMCG), Neuro Imaging Center 3111, Deusinglaan 2, 9713 AW, Groningen, the Netherlands
| | - Iris E Sommer
- Department of Biomedical Sciences and Systems, Cognitive Neurosciences, University of Groningen, University Medical Center Groningen (UMCG), Neuro Imaging Center 3111, Deusinglaan 2, 9713 AW, Groningen, the Netherlands
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17
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Horvat M, Kadija M, Ščavničar A, Živković M, Šagud M, Lovrić M. Association of smoking cigarettes, age, and sex with serum concentrations of olanzapine in patients with schizophrenia. Biochem Med (Zagreb) 2023; 33:030702. [PMID: 37841771 PMCID: PMC10564155 DOI: 10.11613/bm.2023.030702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 07/11/2023] [Indexed: 10/17/2023] Open
Abstract
Introduction Olanzapine is an atypical antipsychotic drug which is effective in the treatment of schizophrenia. Cigarette smoking, age, and sex could be related to the pharmacokinetics and serum concentrations of olanzapine in patients with schizophrenia. The aim of the study was to examine whether there was a significant difference in the serum olanzapine concentrations with regard to the mentioned factors. Materials and methods A total of 58 outpatients with schizophrenia (37 smokers, 42 men, 35 older than 40 years) participated in the study. Blood was sampled in serum tubes just before taking the next dose of olanzapine. Olanzapine was extracted by liquid-liquid extraction and was measured by an in-house high-performance liquid chromatography method on Shimadzu Prominence HPLC System with diode array detector SPD-M20A (Shimadzu, Kyoto, Japan). The results were expressed as the ratio of concentration to the daily dose of olanzapine (C/D). Non-parametric statistical tests were used to analyse differences between variables. Results The median C/D of olanzapine (interquartile range) in smokers was 6.0 (3.4-10.2) nmol/L/mg and in non-smokers 10.1 (5.9-17.6) nmol/L/mg; P = 0.007. The median C/D of olanzapine in patients younger than 40 years was 5.6 (4.5-10.2) nmol/L/mg and in patients older than 40 years 8.4 (5.6-13.0) nmol/L/mg; P = 0.105. The median C/D of olanzapine in male patients was 6.6 (4.6-10.4) nmol/L/mg and in female patients 9.0 (5.9-15.3) nmol/L/mg; P = 0.064. Conclusions The serum olanzapine concentration was significantly lower in smoking than in non-smoking patients with schizophrenia. No significant difference was demonstrated with regard to age and sex.
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Affiliation(s)
- Mihovil Horvat
- Faculty of pharmacy and biochemistry, University of Zagreb, Zagreb, Croatia
| | - Mate Kadija
- Faculty of pharmacy and biochemistry, University of Zagreb, Zagreb, Croatia
| | - Andrijana Ščavničar
- Department of laboratory diagnostics, University hospital centre Zagreb, Zagreb, Croatia
| | - Maja Živković
- Clinic for psychiatry, Clinical hospital Vrapče, Zagreb, Croatia
| | - Marina Šagud
- Department of psychiatry and psychological medicine, University hospital centre Zagreb, Zagreb, Croatia
- School of medicine, University of Zagreb, Zagreb, Croatia
| | - Mila Lovrić
- Faculty of pharmacy and biochemistry, University of Zagreb, Zagreb, Croatia
- Department of laboratory diagnostics, University hospital centre Zagreb, Zagreb, Croatia
- School of medicine, University of Zagreb, Zagreb, Croatia
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18
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Fernández-Miranda JJ, Díaz-Fernández S. Plasmatic Levels and Response to Variable Doses of Monthly Aripiprazole and Three-Month Paliperidone in Patients with Severe Schizophrenia. Treatment Adherence, Effectiveness, Tolerability, and Safety. Neuropsychiatr Dis Treat 2023; 19:2093-2103. [PMID: 37818449 PMCID: PMC10561761 DOI: 10.2147/ndt.s425516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 08/26/2023] [Indexed: 10/12/2023] Open
Abstract
Introduction There is a need when optimizing antipsychotic treatment to know the plasmatic levels (PLs) achieved with the different doses and their relationship with effectiveness and toxicity, especially in patients with poor clinical progress. This study investigates the dose-PL-response relationship of monthly aripiprazole (AOM) and three-month paliperidone (PP3M). Methods Observational, 52-week prospective study of patients with severe schizophrenia (CGI-S ≥ 5) treated with PP3M or AOM for at least one year before their inclusion in the study (N=68). Dose-PL relationship was determined. Subjects were included in standard-dose and high-dose (above labeled) and standard/therapeutic range-PLs and high-PLs (above range) groups. Treatment adherence, effectiveness (hospitalizations, severity), tolerability and safety were assessed. PLs and clinical response were evaluated. Results No clear linear relationship was found between doses and PLs. In a considerable number of cases, standard doses achieved PLs above the therapeutic range. A significant clinical improvement was related to high PLs, without less safety, tolerability, or treatment compliance being involved. Clinical severity decreased more frequently in patients who received high doses and reached high PLs. Hospital admissions decreased significantly in those patients with high PLs. Conclusion Taking into account the absence of a linear relationship between doses and PLs, the effectiveness in people with severe schizophrenia of AOM and PP3M depends on reaching high PLs, achieved with high doses, but also with standard doses in some cases, without leading to worse treatment tolerability, safety, or adherence.
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Affiliation(s)
- Juan J Fernández-Miranda
- AGC de Salud Mental V, Hospital Universitario de Cabueñes, Servicio de Salud del Principado de Asturias (SESPA), Gijón, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
| | - Silvia Díaz-Fernández
- AGC de Salud Mental V, Hospital Universitario de Cabueñes, Servicio de Salud del Principado de Asturias (SESPA), Gijón, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
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19
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McAdam MKT, Baldessarini RJ, Murphy AL, Gardner DM. Second International Consensus Study of Antipsychotic Dosing (ICSAD-2). J Psychopharmacol 2023; 37:982-991. [PMID: 37842908 PMCID: PMC10612374 DOI: 10.1177/02698811231205688] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2023]
Abstract
BACKGROUND Expert consensus-based clinically equivalent dose estimates and dosing recommendations can provide valuable support for the use of drugs for psychosis in clinical practice and research. AIMS This second International Consensus Study of Antipsychotic Dosing provides dosing equivalencies and recommendations for newer drugs for psychosis and previously reported drugs with low consensus. METHODS We used a two-step Delphi survey process to establish and update consensus with a broad, international sample of clinical and research experts regarding 26 drug formulations to obtain dosing recommendations (start, target range, and maximum) and estimates of clinically equivalent doses for the treatment of schizophrenia. Reference agents for equivalent dose estimates were oral olanzapine 20 mg/day for 15 oral and 7 long-acting injectable (LAI) agents and intramuscular haloperidol 5 mg for 4 short-acting injectable (SAI) agents. We also provide a contemporary list of equivalency estimates and dosing recommendations for a total of 44 oral, 16 LAI, and 14 SAI drugs for psychosis. RESULTS Survey participants (N = 72) from 24 countries provided equivalency estimates and dosing recommendations for oral, LAI, and SAI formulations. Consensus improved from survey stages I to II. The final consensus was highest for LAI formulations, intermediate for oral agents, and lowest for SAI formulations of drugs for psychosis. CONCLUSIONS As randomized, controlled, fixed, multiple-dose trials to optimize the dosing of drugs for psychosis remain rare, expert consensus remains a useful alternative for estimating clinical dosing equivalents. The present findings can support clinical practice, guideline development, and research design and interpretation involving drugs for psychosis.
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Affiliation(s)
| | - Ross J Baldessarini
- International Consortium for Mood & Psychotic Disorders Research, Mailman Research Center, McLean Hospital, Belmont, MA, USA
- Department of Psychiatry, Harvard Medical School, Boston, MA, USA
| | - Andrea L Murphy
- Department of Psychiatry, Dalhousie University, Halifax, NS, Canada
- College of Pharmacy, Dalhousie University, Halifax, NS, Canada
| | - David M Gardner
- Department of Psychiatry, Dalhousie University, Halifax, NS, Canada
- College of Pharmacy, Dalhousie University, Halifax, NS, Canada
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20
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Berger SJ, Hofer A. [Safety aspects during treatment with clozapine: : Adverse effects, titration, and therapeutic drug monitoring - a narrative review]. NEUROPSYCHIATRIE : KLINIK, DIAGNOSTIK, THERAPIE UND REHABILITATION : ORGAN DER GESELLSCHAFT OSTERREICHISCHER NERVENARZTE UND PSYCHIATER 2023; 37:122-129. [PMID: 37349671 PMCID: PMC10491532 DOI: 10.1007/s40211-023-00474-z] [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: 10/11/2022] [Accepted: 05/19/2023] [Indexed: 06/24/2023]
Abstract
BACKGROUND According to current guidelines, clozapine should be used as a third step in treatment resistant schizophrenia (TRS). In everyday clinical practice, however, it is frequently used at a much later stage, which leads to a significant deterioration of prognosis. The first part of this narrative overview focuses on the most frequent side effects of clozapine, on the relevance of slow titration, and on specific aspects of therapeutic drug monitoring (TDM). MATERIAL AND METHODS Medline, the Guideline for the use of clozapine 2013 of the Netherlands Clozapine Collaboration Group, and the S3 Guideline for Schizophrenia of the German Association for Psychiatry, Psychotherapy and Psychosomatics were searched for relevant literature, the last query dating from April 28th, 2023. RESULTS Despite its unique efficacy clozapine is underused in clinical practice and prescription varies between and within countries. Next to hematological, metabolic, and vegetative side effects, clozapine induced inflammation manifesting in the form of pneumonia or myocarditis, which is mainly associated with rapid titration, represents a major clinical challenge with CRP monitoring being of particular relevance. In this context, it also has to be noted that sex, smoking behavior, and ethnic origin impact clozapine metabolism, thus requiring personalized dosing. CONCLUSION Slow titration when possible, TDM, and CYP diagnostics when appropriate increase patient safety during treatment with clozapine and thus the likelihood of early prescription of this compound in TRS.
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Affiliation(s)
- Stefan J Berger
- Department für Psychiatrie, Psychotherapie, Psychosomatik und Medizinische Psychologie, Univ.-Klinik für Psychiatrie I, Medizinische Universität Innsbruck, Anichstr. 35, 6020, Innsbruck, Österreich
| | - Alex Hofer
- Department für Psychiatrie, Psychotherapie, Psychosomatik und Medizinische Psychologie, Univ.-Klinik für Psychiatrie I, Medizinische Universität Innsbruck, Anichstr. 35, 6020, Innsbruck, Österreich.
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Pjevac M, Korošec Hudnik L. A case report-"When less is more": controlled inpatient reduction of anticholinergic burden in a patient with clozapine-resistant schizophrenia. Front Psychiatry 2023; 14:1222177. [PMID: 37583839 PMCID: PMC10425236 DOI: 10.3389/fpsyt.2023.1222177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Accepted: 07/07/2023] [Indexed: 08/17/2023] Open
Abstract
The functional status of an individual with schizophrenia is the defining factor in their quality of life and is closely associated with cognitive abilities, which are impaired in individuals with schizophrenia and considered to be the core symptom of the disorder. The use of psychopharmacotherapy can also have a significant impact on cognitive functioning. The relationship between clozapine treatment and cognitive impairment in individuals with schizophrenia is an intricate one. While some studies have reported a positive effect of clozapine on learning and memory, other studies have found that patients treated with clozapine experienced a decline in cognitive functioning in particular areas. In particular, attention and memory have been shown to deteriorate with rising plasma levels of clozapine. This effect may be attributed to its anticholinergic effect. A reduction in the medication related to anticholinergic burden has been previously found to improve cognitive abilities. In the presented case, we describe a psychotic relapse with delirium symptoms in a patient on clozapine treatment with potentially toxic clozapine blood level. The symptoms of delirium subsided after a clozapine dose adjustment. Gradually lowering the initially very high anticholinergic burden improved the patient's cognitive functioning.
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Affiliation(s)
- Milica Pjevac
- Department for Intensive Psychiatric Treatment, University Psychiatric Clinic Ljubljana, Ljubljana, Slovenia
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22
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Hatano M, Yamada K, Matsuzaki H, Yokoi R, Saito T, Yamada S. Analysis of clozapine-induced seizures using the Japanese Adverse Drug Event Report database. PLoS One 2023; 18:e0287122. [PMID: 37307250 DOI: 10.1371/journal.pone.0287122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 05/30/2023] [Indexed: 06/14/2023] Open
Abstract
Among antipsychotics, clozapine is associated with a high risk of seizures. This study aimed to generate novel hypotheses regarding trends in the onset of clozapine-induced seizures using the JADER (Japanese Adverse Drug Event Report) database. Seizures were defined according to the Standardized MedDRA Queries (SMQ) for convulsions (SMQ20000079). Trends in the onset of clozapine-induced seizures were assessed using multivariate logistic regression analysis with covariates of sex, age, clozapine dose, antipsychotic polypharmacy, concomitant medications, and history of convulsive disorder. In addition, we assessed the time-to-onset of clozapine-induced seizures using the median time, interquartile range, and Weibull shape parameter. The JADER database registered 2,745 cases of adverse events with clozapine, and 1,784 cases were included in the analysis after excluding cases for which clinical information was not available. Medium (200-400 mg) and high (> 400 mg) doses of clozapine had a significantly higher reporting rate of seizures than low doses (< 200 mg) (adjusted reporting odds ratio [aROR] = 3.05, 95% confidence interval [CI]: 1.86-4.99 and aROR = 9.81, 95% CI: 6.06-15.89, respectively). Younger age, antipsychotic polypharmacy, and concomitant use of lithium were also significantly associated with reports of seizures. The time-to-onset analysis of 222 cases of clozapine-induced seizures showed that the median time was 134 (interquartile range, 72-295) days. The 95% CI of the WSP β-value for clozapine-induced seizures included 1 and was classified as a random failure type. In conclusion, the results suggest that clozapine-induced seizures are dose-dependent adverse events that should be monitored with consideration of the effects of age and concomitant medications. Further epidemiological research is needed to strengthen and validate our hypotheses.
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Affiliation(s)
- Masakazu Hatano
- Department of Pharmacotherapeutics and informatics, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
| | - Kaho Yamada
- Department of Pharmacotherapeutics and informatics, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
| | - Haruna Matsuzaki
- Department of Pharmacotherapeutics and informatics, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
| | - Rina Yokoi
- Department of Pharmacotherapeutics and informatics, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
| | - Takeo Saito
- Department of Psychiatry, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
| | - Shigeki Yamada
- Department of Pharmacotherapeutics and informatics, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
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Tralongo F, Konecki C, Feliu C, Kaladjian A, Djerada Z. Association Between Clozapine Plasma Concentrations and Treatment Response: A Systematic Review, Meta-analysis and Individual Participant Data Meta-analysis. Clin Pharmacokinet 2023; 62:807-818. [PMID: 37145296 DOI: 10.1007/s40262-023-01247-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/26/2023] [Indexed: 05/06/2023]
Abstract
BACKGROUND AND OBJECTIVES Although therapeutic drug monitoring of clozapine is recommended, its optimisation is often adjusted only on the basis of dosage. The aim of this study was to assess the link between clozapine plasma concentrations and clinical response by a meta-analysis of published studies and by an individual participant data meta-analysis. METHODS We conducted a computerised search of bibliographic databases (EMBASE, PubMed, Clinical Trials, and Web of Science) to identify studies that assessed the relationship between clozapine serum or plasma concentrations and clinical efficacy. Using pooled data, we investigated the association between improvement of clinical outcome and clozapine or norclozapine plasma concentrations, the sum of clozapine and norclozapine plasma concentrations, and the coefficient of variation of clozapine plasma concentrations. Using available individual data, we assessed the relationship between clozapine plasma concentrations and clinical response (changes in the Brief Psychiatric Rating Scale score) and identified a threshold level for a favourable clinical response. RESULTS Fifteen studies satisfied inclusion criteria. Our meta-analysis showed that responders had clozapine plasma concentrations that were, on average, 117 ng/mL higher than non-responders. The patients with plasma clozapine concentrations above the thresholds identified in each study had a higher likelihood of responding (odds ratio = 2.94, p < 0.001). Norclozapine plasma concentrations were not associated with a clinical response. The meta-analysis of individual data supported this result and confirmed the link between clozapine concentrations and a change in the Brief Psychiatric Rating Scale score and/or the probability of clinical response. Finally, with the analysis of the coefficient of variation of clozapine plasma concentrations, we found that a greater inter-individual fluctuation in plasma concentrations was associated with a loss of clinical response. CONCLUSIONS Our work confirmed that, in contrast to clozapine doses, clozapine plasma concentrations were related to a favourable clinical response, with a mean difference between responders and non-responders of 117 ng/mL. A threshold for a treatment response of 407 ng/mL was determined, with a high discriminatory capacity, and a sensitivity and specificity of 71% and 89.1%, respectively.
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Affiliation(s)
- Federica Tralongo
- Department of Pharmacology, University of Reims Champagne-Ardenne, HERVI EA 3801, Reims University Hospital, Reims, France
- Department of Psychiatry, Marne Public Mental Health Institution, Reims University Hospital, Reims, France
| | - Céline Konecki
- Department of Pharmacology, University of Reims Champagne-Ardenne, HERVI EA 3801, Reims University Hospital, Reims, France
| | - Catherine Feliu
- Department of Pharmacology, University of Reims Champagne-Ardenne, HERVI EA 3801, Reims University Hospital, Reims, France
| | - Arthur Kaladjian
- Department of Psychiatry, Marne Public Mental Health Institution, Reims University Hospital, Reims, France
| | - Zoubir Djerada
- Department of Pharmacology, University of Reims Champagne-Ardenne, HERVI EA 3801, Reims University Hospital, Reims, France.
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Rubio JM, Guinart D, Kane JM, Correll CU. Early Non-Response to Antipsychotic Treatment in Schizophrenia: A Systematic Review and Meta-Analysis of Evidence-Based Management Options. CNS Drugs 2023; 37:499-512. [PMID: 37261669 DOI: 10.1007/s40263-023-01009-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/02/2023] [Indexed: 06/02/2023]
Abstract
BACKGROUND Early non-response is a well-established prognostic marker but evidence-based and consistent recommendations to manage it are limited. The aim of this systematic review and meta-analysis was to generate evidence-based strategies for the management of schizophrenia patients with early non-response to 2 weeks of antipsychotic treatment. METHODS We conducted a systematic review and meta-analysis of randomized trials comparing antipsychotic dose escalation, switch, augmentation and continuation in individuals with study-defined early antipsychotic treatment non-response. Eligibility criteria were (1) clinical trials of primary psychosis treating for at least 2 weeks with antipsychotic monotherapy with study-defined operationalized criteria for early non-response; and (2) randomization to at least two of the following treatment strategies: dose escalation, switch, augmentation, or treatment continuation. Information sources were Pubmed, PsycINFO, and EMBASE, and risk of bias was assessed using Jadad scores. Results were synthesized using random-effects meta-analysis, comparing each intervention with treatment continuation for total symptom change as the primary outcome, generating standardized mean differences (SMDs) and 95% confidence intervals (CIs). Studies meeting the selection criteria but providing insufficient data for a meta-analysis were presented separately. RESULTS We screened 454 records by 1 August 2022, of which 12 individual datasets met the inclusion criteria, representing 947 research participants. Of those studies, five provided data to include in the meta-analysis (four with early non-response at 2 weeks, one at 3 weeks). Early non-response was defined within a timeline of 2 weeks in eight datasets, with the remaining datasets ranging between 3 and 4 weeks. The rates of early non-response ranged between 72.0 and 24.1%, and the endpoint ranged within 4-24 weeks post randomization. Quality was good (i.e., Jadad score of ≥3) in 8 of the 12 datasets. Overall, three studies compared antipsychotic switch versus continuation and two compared antipsychotic switch versus augmentation, in both cases without significant pooled between-group differences for total symptom severity (n = 149, SMD 0.18, 95% CI -0.14 to 0.5). Individually, two relatively large studies for antipsychotic switch versus continuation found small advantages for switching antipsychotics for total symptom severity (n = 149, SMD -0.49, 95% CI -1.05 to -0.06). One relatively large study found an advantage for dose escalation, although this finding has not been replicated and was not included in the meta-analysis. None of the alternatives included antipsychotic switch to clozapine. CONCLUSIONS Despite robust accuracy of early antipsychotic non-response predicting ultimate response, the evidence for treatment strategies that should be used for early non-response after 2-3 weeks is limited. While meta-analytic findings were non-significant, some individual studies suggest advantages of antipsychotic switch or dose escalation. Therefore, any conclusions should be interpreted carefully, given the insufficient high-quality evidence.
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Affiliation(s)
- Jose M Rubio
- The Zucker Hillside Hospital, Division of Psychiatry Research, Northwell Health, Glen Oaks, NY, USA
- Institute of Behavioral Science, The Feinstein Institute for Medical Research, Manhasset, NY, USA
- Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA
| | - Daniel Guinart
- The Zucker Hillside Hospital, Division of Psychiatry Research, Northwell Health, Glen Oaks, NY, USA
- Institute of Behavioral Science, The Feinstein Institute for Medical Research, Manhasset, NY, USA
- Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA
- Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Institut de Neuropsiquiatria i Addiccions (INAD), Hospital del Mar, Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), Barcelona, Spain
| | - John M Kane
- The Zucker Hillside Hospital, Division of Psychiatry Research, Northwell Health, Glen Oaks, NY, USA
- Institute of Behavioral Science, The Feinstein Institute for Medical Research, Manhasset, NY, USA
- Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA
| | - Christoph U Correll
- The Zucker Hillside Hospital, Division of Psychiatry Research, Northwell Health, Glen Oaks, NY, USA.
- Institute of Behavioral Science, The Feinstein Institute for Medical Research, Manhasset, NY, USA.
- Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA.
- Department of Child and Adolescent Psychiatry, Charité-Universitätsmedizin Berlin, Berlin, Germany.
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25
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Leung JG. Part
II
: Interactive case—Clinical pearls of clozapine. JOURNAL OF THE AMERICAN COLLEGE OF CLINICAL PHARMACY 2023. [DOI: 10.1002/jac5.1765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
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Lister JF, Wong KR. Part I: Interactive case—Precision medicine in psychiatry. JOURNAL OF THE AMERICAN COLLEGE OF CLINICAL PHARMACY 2023. [DOI: 10.1002/jac5.1763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
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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: 6] [Impact Index Per Article: 6.0] [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.
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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:
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New Immunoassays in Therapeutic Drug Monitoring: Where is the Journey Heading? Ther Drug Monit 2023; 45:11-13. [PMID: 36191293 DOI: 10.1097/ftd.0000000000001048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 09/06/2022] [Indexed: 01/11/2023]
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Miroshnichenko II, Baymeeva NV, Platova AI, Kaleda VG. [Therapeutic drug monitoring of antipsychotic drugs in routine psychiatric practice]. Zh Nevrol Psikhiatr Im S S Korsakova 2023; 123:145-152. [PMID: 37315254 DOI: 10.17116/jnevro2023123051145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
OBJECTIVE To evaluate the relationship between daily doses of antipsychotic drugs, their serum concentrations, and characteristics of patients treated for schizophrenia or schizophreniform disorder in day-to-day clinical practice. MATERIAL AND METHODS A total of 187 patients were included in the study, 77 (41.1%) patients were on monotherapy, and 110 (58.9%) patients received two or more antipsychotics. Patients age was 27.8±8.1 years, and their body weight was 79.8±15.6 kg. The sample was represented mainly by young men (93.0%). The proportion of smokers was 37.4%. The appropriate HPLC-MS/MS method was used for the simultaneous analysis of 8 antipsychotics and its active metabolites. Serum concentrations of the drugs aripiprazole (ARI), chlorpromazine (CPZ), haloperidol (HAL), zuclopenthixol (ZUC), clozapine (CLO), risperidone (RIS), quetiapine (QUE), olanzapine (OLA), norclozapine (N-desmethylclozapine, NOR), 9-hydroxyrisperidone (9-OH-RIS), dehydroaripiprazole (DGA) were measured. The serum concentration/dose ratio (C/D) was employed as the primary outcome measure, as doses were not kept constant during the study. The active antipsychotic fraction (drug+active metabolite, active moiety - AM) was also evaluated for RIS and ARI. In addition, the metabolite/parent ratio (MPR) was evaluated for RIS and ARI. RESULTS A total of 265 biological samples were obtained, 421 and 203 measurements of the concentration of drugs and their metabolites were carried out, respectively. Overall, 48% of antipsychotics levels were in the expected therapeutic ranges, 30% were below therapeutic ranges, and 22% were above them. A total of 55 patients underwent dose adjustments or drug changes due to ineffectiveness or side-effects. It has been found that smoking reduces the level of C/D for CLO (p<0.01, Mann-Whitney test). We have established that comedication with CLO significantly increases the C/D ratio of QUE (p<0.05, Mann-Whitney test). We have not revealed any influence of weight and age of the subjects on the C/D. The dose-concentration regression relationships are formalized for all AP. CONCLUSION Therapeutical drug monitoring (TDM) is an essential tool to personalize antipsychotic therapy. Careful analysis of TDM data can contribute significantly to the study of the impact of individual patient characteristics on systemic exposure to these drugs.
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Affiliation(s)
| | | | - A I Platova
- Mental Health Research Center, Moscow, Russia
| | - V G Kaleda
- Mental Health Research Center, Moscow, Russia
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Qubad M, Bittner RA. Second to none: rationale, timing, and clinical management of clozapine use in schizophrenia. Ther Adv Psychopharmacol 2023; 13:20451253231158152. [PMID: 36994117 PMCID: PMC10041648 DOI: 10.1177/20451253231158152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 01/24/2023] [Indexed: 03/31/2023] Open
Abstract
Despite its enduring relevance as the single most effective and important evidence-based treatment for schizophrenia, underutilization of clozapine remains considerable. To a substantial degree, this is attributable to a reluctance of psychiatrists to offer clozapine due to its relatively large side-effect burden and the complexity of its use. This underscores the necessity for continued education regarding both the vital nature and the intricacies of clozapine treatment. This narrative review summarizes all clinically relevant areas of evidence, which support clozapine's wide-ranging superior efficacy - for treatment-resistant schizophrenia (TRS) and beyond - and make its safe use eminently feasible. Converging evidence indicates that TRS constitutes a distinct albeit heterogeneous subgroup of schizophrenias primarily responsive to clozapine. Most importantly, the predominantly early onset of treatment resistance and the considerable decline in response rates associated with its delayed initiation make clozapine an essential treatment option throughout the course of illness, beginning with the first psychotic episode. To maximize patients' benefits, systematic early recognition efforts based on stringent use of TRS criteria, a timely offer of clozapine, thorough side-effect screening and management as well as consistent use of therapeutic drug monitoring and established augmentation strategies for suboptimal responders are crucial. To minimize permanent all-cause discontinuation, re-challenges after neutropenia or myocarditis should be considered. Owing to clozapine's unique efficacy, comorbid conditions including substance use and most somatic disorders should not dissuade but rather encourage clinicians to consider clozapine. Moreover, treatment decisions need to be informed by the late onset of clozapine's full effects, which for reduced suicidality and mortality rates may not even be readily apparent. Overall, the singular extent of its efficacy combined with the high level of patient satisfaction continues to distinguish clozapine from all other available antipsychotics.
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Affiliation(s)
- Mishal Qubad
- Department of Psychiatry, Psychosomatic Medicine and Psychotherapy, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
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The Use of Second-Generation Antipsychotics in Patients with Severe Schizophrenia in the Real World: The Role of the Route of Administration and Dosage-A 5-Year Follow-Up. Biomedicines 2022; 11:biomedicines11010042. [PMID: 36672550 PMCID: PMC9855920 DOI: 10.3390/biomedicines11010042] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/15/2022] [Accepted: 12/17/2022] [Indexed: 12/28/2022] Open
Abstract
To assess the impact of the route of administration and doses of second-generation antipsychotics (SGAs) on treatment adherence, hospital admissions, and suicidal behaviour in patients with severe schizophrenia (Clinical Global Impression−Severity−CGI-S ≥ 5), we implemented an observational 5-year follow-up study. A total of 37.5% of the patients on oral antipsychotics (Aps) and 11.5% of those on long-acting injectables (LAIs) abandoned the treatment (p < 0.001). There were no differences in treatment discontinuation between the LAI-AP standard and high-dose groups. A total of 28.1% of the patients on oral Aps had at least one hospitalisation, as well as 13.1% of patients on LAIs (p < 0.001). There were fewer hospitalisations of patients on LAIs in the high-dose group (p < 0.05). Suicide attempts were recorded for 18% of patients on oral Aps but only for 4.6% of patients on LAIs (p < 0.001). No differences were found between the dosage groups on LAIs. Tolerability was good for all Aps and somewhat better for LAIs than oral Aps in terms of side effects (p < 0.05). There were no differences between the standard and high-dose groups. More patients discontinued treatment due to side effects in the oral AP group (p < 0.01). LAI SGA treatment was more effective than oral AP in terms of adherence and treatment outcomes for managing people with severe schizophrenia. Moreover, significant improvements were found that favour high-dose LAI SGA treatment for some of these patients. This study highlights the need to consider LAI antipsychotics and high-dose strategies for patients with severe schizophrenia.
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Shu T, Wang J, Li X, Wang X, Wang S. Cytochrome P450 2D6 biosensor for perphenazine based on multi-walled carbon nanotube/ionic liquid and tetrathiafulvalene-tetracyanoquinodimethane salt/ionic liquid gels. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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Therapeutic Drug Monitoring of Long-Acting Injectable Antipsychotics as a Predictor of Relapse in Schizophrenia Spectrum Disorders: A 1-Year Pilot Study. Ther Drug Monit 2022; 44:805-810. [PMID: 35442940 DOI: 10.1097/ftd.0000000000000990] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 03/21/2022] [Indexed: 01/29/2023]
Abstract
BACKGROUND Long-acting injectable antipsychotics (LAIs) have been shown to reduce acute episodes of schizophrenia spectrum disorders (SSDs). However, breakthrough relapses are frequent, possibly because of underdosing in clinical practice. In this framework, the advantages of therapeutic drug monitoring (TDM) may be overlooked. This study explored the association of low steady-state LAI levels with a higher risk of relapse in SSDs, despite the use of a licensed posology. METHODS Forty-eight clinically stable outpatients with SSD underwent LAI-TDM using liquid chromatography-mass spectrometry for routine observational purposes. Baseline anamnestic, pharmacological, and psychometric evaluations compared subjects with "under-range" versus "in-range" LAI serum levels; between-group comparisons for different LAI treatments were also performed. A binary logistic regression explored which baseline factors (age, sex, previous hospitalizations, psychopathology, specific LAI treatment, and underrange serum levels) predicted relapse during the next 12 months. RESULTS Baseline comparisons did not show significant between-group differences, except for a higher percentage of underrange values in individuals receiving olanzapine pamoate. A total of 10 patients (20.8%) relapsed during the follow-up; only underrange LAI levels predicted the event (odds ratio 0.03, 95% confidence interval 0.01-0.36; P = 0.005). CONCLUSIONS Even if relapse remains as a multifactorial event, LAI-TDM may identify subjects at risk for this negative outcome, thus optimizing antipsychotic maintenance treatment in the context of precision medicine. The finding of underrange LAI plasma levels in real-world practice should prompt adequate monitoring of clinically stable outpatients to identify the early signs of psychopathological deterioration.
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Pennazio F, Brasso C, Villari V, Rocca P. Current Status of Therapeutic Drug Monitoring in Mental Health Treatment: A Review. Pharmaceutics 2022; 14:pharmaceutics14122674. [PMID: 36559168 PMCID: PMC9783500 DOI: 10.3390/pharmaceutics14122674] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 11/25/2022] [Accepted: 11/26/2022] [Indexed: 12/03/2022] Open
Abstract
Therapeutic drug monitoring (TDM) receives growing interest in different psychiatric clinical settings (emergency, inpatient, and outpatient services). Despite its usefulness, TDM remains underemployed in mental health. This is partly due to the need for evidence about the relationship between drug serum concentration and efficacy and tolerability, both in the general population and even more in subpopulations with atypical pharmacokinetics. This work aims at reviewing the scientific literature published after 2017, when the most recent guidelines about the use of TDM in mental health were written. We found 164 pertinent records that we included in the review. Some promising studies highlighted the possibility of correlating early drug serum concentration and clinical efficacy and safety, especially for antipsychotics, potentially enabling clinicians to make decisions on early laboratory findings and not proceeding by trial and error. About populations with pharmacokinetic peculiarities, the latest studies confirmed very common alterations in drug blood levels in pregnant women, generally with a progressive decrease over pregnancy and a very relevant dose-adjusted concentration increase in the elderly. For adolescents also, several drugs result in having different dose-related concentration values compared to adults. These findings stress the recommendation to use TDM in these populations to ensure a safe and effective treatment. Moreover, the integration of TDM with pharmacogenetic analyses may allow clinicians to adopt precise treatments, addressing therapy on an individual pharmacometabolic basis. Mini-invasive TDM procedures that may be easily performed at home or in a point-of-care are very promising and may represent a turning point toward an extensive real-world TDM application. Although the highlighted recent evidence, research efforts have to be carried on: further studies, especially prospective and fixed-dose, are needed to replicate present findings and provide clearer knowledge on relationships between dose, serum concentration, and efficacy/safety.
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Affiliation(s)
- Filippo Pennazio
- Department of Neuroscience “Rita Levi Montalcini”, University of Turin, 10126 Turin, Italy
| | - Claudio Brasso
- Department of Neuroscience “Rita Levi Montalcini”, University of Turin, 10126 Turin, Italy
- Correspondence:
| | - Vincenzo Villari
- Psychiatric Emergency Service, Department of Neuroscience and Mental Health, A.O.U. “Città della Salute e della Scienza di Torino”, 10126 Turin, Italy
| | - Paola Rocca
- Department of Neuroscience “Rita Levi Montalcini”, University of Turin, 10126 Turin, Italy
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Lenk HÇ, Løvsletten Smith R, O'Connell KS, Jukić MM, Kringen MK, Andreassen OA, Ingelman‐Sundberg M, Molden E. Impact of NFIB and CYP1A variants on clozapine serum concentration-A retrospective naturalistic cohort study on 526 patients with known smoking habits. Clin Transl Sci 2022; 16:62-72. [PMID: 36152308 PMCID: PMC9841299 DOI: 10.1111/cts.13422] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 08/11/2022] [Accepted: 09/08/2022] [Indexed: 02/06/2023] Open
Abstract
Clinical response of clozapine is closely associated with serum concentration. Although tobacco smoking is the key environmental factor underlying interindividual variability in clozapine metabolism, recent genome-wide studies suggest that CYP1A and NFIB genetic variants may also be of significant importance, but their quantitative impact is unclear. We investigated the effects of the rs2472297 C>T (CYP1A) and rs28379954 T>C (NFIB) polymorphisms on serum concentrations in smokers and nonsmokers. The study retrospectively included 526 patients with known smoking habits (63.7% smokers) from a therapeutic drug monitoring service in Norway. Clozapine dose-adjusted concentrations (C/D) and patient proportions with subtherapeutic levels (<1070 nmol/L) were compared between CYP1A/NFIB variant allele carriers and homozygous wild-type carriers (noncarriers), in both smokers and nonsmokers. Clozapine C/D was reduced in patients carrying CYP1A-T and NFIB-C variants versus noncarriers, both among smokers (-48%; p < 0.0001) and nonsmokers (-35%; p = 0.028). Patients who smoke carrying CYP1A-T and NFIB-C variants had a 66% reduction in clozapine C/D versus nonsmoking noncarriers (p < 0.0001). The patient proportion with subtherapeutic levels was 2.9-fold higher in patients who smoke carrying NFIB-C and CYP1A-T variants versus nonsmoking noncarriers (p < 0.0001). In conclusion, CYP1A and NFIB variants have significant and additive impact on clozapine dose requirements for reaching target serum concentrations. Patients who smoke carrying the studied CYP1A and NFIB variants, comprising 2.5% of the study population, may need threefold higher doses to prevent risk of clozapine undertreatment. The results suggest that pre-emptive genotyping of NFIB and CYP1A may be utilized to guide clozapine dosing and improve clinical outcomes in patients with treatment-resistant schizophrenia.
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Affiliation(s)
- Hasan Çağın Lenk
- Center for PsychopharmacologyDiakonhjemmet HospitalOsloNorway,Section for Pharmacology and Pharmaceutical Biosciences, Department of PharmacyUniversity of OsloOsloNorway
| | - Robert Løvsletten Smith
- Center for PsychopharmacologyDiakonhjemmet HospitalOsloNorway,Division of Mental Health and Addiction, NORMENT CentreOslo University HospitalOsloNorway,Institute of Clinical MedicineUniversity of OsloOsloNorway
| | - Kevin S. O'Connell
- Division of Mental Health and Addiction, NORMENT CentreOslo University HospitalOsloNorway,Institute of Clinical MedicineUniversity of OsloOsloNorway
| | - Marin M. Jukić
- Section of Pharmacogenetics, Department of Physiology and PharmacologyKarolinska InstitutetStockholmSweden,Department of Physiology, Faculty of PharmacyUniversity of BelgradeBelgradeSerbia
| | - Marianne Kristiansen Kringen
- Center for PsychopharmacologyDiakonhjemmet HospitalOsloNorway,Department of Life Sciences and HealthOslo Metropolitan UniversityOsloNorway
| | - Ole A. Andreassen
- Division of Mental Health and Addiction, NORMENT CentreOslo University HospitalOsloNorway,Institute of Clinical MedicineUniversity of OsloOsloNorway
| | - Magnus Ingelman‐Sundberg
- Section of Pharmacogenetics, Department of Physiology and PharmacologyKarolinska InstitutetStockholmSweden
| | - Espen Molden
- Center for PsychopharmacologyDiakonhjemmet HospitalOsloNorway,Section for Pharmacology and Pharmaceutical Biosciences, Department of PharmacyUniversity of OsloOsloNorway
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36
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Simon N, Torrents R, Azorin JM. Comorbidities and the right dose: antipsychotics. Expert Opin Drug Metab Toxicol 2022; 18:507-518. [PMID: 35979611 DOI: 10.1080/17425255.2022.2113378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION The effects of antipsychotic drugs are dose-dependent, which is particularly true for their efficacy, each antipsychotic having a specific dose-response curve. This may justify individualizing doses for these agents. AREAS COVERED We review the pharmacokinetic profiles of seven oral antipsychotics: haloperidol, risperidone, olanzapine, clozapine, quetiapine, ziprasidone, and aripiprazole. Their main indications are psychotic and affective disorders. They are prescribed in a very large population which may have comorbidities. Hence, we analyze the impact of the latter on the pharmacokinetic profiles of these antipsychotics, focusing on renal and hepatic impairment. Reviews and clinical trials were discussed based on a systematic literature search (PubMed) ranging from 1995 to 2022. EXPERT OPINION Factors liable to impact antipsychotic dosage are numerous and their subsequent effects often hard to predict, due to multi-level interactions and compensatory phenomena. In clinical practice, physicians must be aware of these potential effects, but base their decisions on monitoring antipsychotic plasma levels.
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Affiliation(s)
- Nicolas Simon
- Aix Marseille Univ, INSERM, IRD, SESSTIM, Hôpital Sainte Marguerite, Service de Pharmacologie Clinique, CAP, Marseille, France
| | - Romain Torrents
- Aix Marseille Univ, INSERM, IRD, SESSTIM, Hôpital Sainte Marguerite, Service de Pharmacologie Clinique, CAP, Marseille, France
| | - Jean-Michel Azorin
- Department of Psychiatry, Sainte Marguerite Hospital. 13009 Marseille, France
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37
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Veerman SRT, Moscou T, Bogers JPAM, Cohen D, Schulte PFJ. Clozapine and COVID-19 Vaccination: Effects on blood levels and leukocytes. An observational cohort study. Acta Psychiatr Scand 2022; 146:168-178. [PMID: 35322409 PMCID: PMC9111344 DOI: 10.1111/acps.13428] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 02/23/2022] [Accepted: 03/20/2022] [Indexed: 12/14/2022]
Abstract
OBJECTIVE To investigate the safety of COVID-19 vaccination in patients on clozapine as regards plasma clozapine concentration and haematological parameters. METHODS We conducted a multicentre observational cohort study from 22 February 2021 to 2 September 2021. Primary outcomes were clinically relevant increase in clozapine blood levels (>100 μg/L increase compared to baseline) and clozapine alert levels (>1000 μg/L). Secondary outcomes were granulocytopenia, leukocytopenia and lymphocytopenia. Outcomes were measured approximately 5 days after the first and (where applicable) second dose of COVID-19 vaccine. RESULTS This study included 139 patients. Compared to baseline, clozapine blood levels increased significantly (ES = 0.28, p = 0.003) after the second vaccination. Clinically relevant increases in clozapine blood levels occurred in 20/92 patients (22%) and in 16/56 patients (29%) during the first and second phases, respectively. Clozapine alert levels developed in one patient (1%) following the first dose and in three patients (5%) after the second dose. In both phases, changes in white blood cells (WBC) were limited to mild granulocytopenia (3% and 5%), moderate granulocytopenia (1% and 0%) and leukocytopenia (2% and 3%) without cause for extra monitoring according to the guideline. CONCLUSION In general, as regards WBC counts COVID-19 vaccination seems to be safe in patients with SMI. Changes in WBC had no clinical implications. Psychoeducation on the symptoms of clozapine intoxication is recommended, especially in patients with clozapine blood levels approaching the upper limit of the therapeutic range. Increase in the C-reactive protein (CRP) level can signal inflammation rapidly and help to prevent clozapine intoxication following vaccination.
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Affiliation(s)
- Selene R. T. Veerman
- Department of Community Mental HealthMental Health Service Noord‐Holland NoordAlkmaarThe Netherlands,Dutch Clozapine Collaboration GroupOegstgeestThe Netherlands
| | - Timo Moscou
- High Intensive Care ClinicMental Health Service Noord‐Holland NoordHeilooThe Netherlands
| | - Jan P. A. M. Bogers
- Dutch Clozapine Collaboration GroupOegstgeestThe Netherlands,High Care Psychiatric ClinicsMental Health Service RivierduinenLeidenThe Netherlands
| | - Dan Cohen
- Dutch Clozapine Collaboration GroupOegstgeestThe Netherlands,Department of Community Mental HealthMental Health Service Noord‐Holland NoordHeerhugowaardThe Netherlands
| | - Peter F. J. Schulte
- Department of Community Mental HealthMental Health Service Noord‐Holland NoordAlkmaarThe Netherlands,Dutch Clozapine Collaboration GroupOegstgeestThe Netherlands
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38
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Gerving J, Walser H, Kelly AC. Postinjection delirium/sedation syndrome in a transgender man undergoing hormone therapy. Ment Health Clin 2022; 12:263-266. [PMID: 36071735 PMCID: PMC9405634 DOI: 10.9740/mhc.2022.08.263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 07/13/2022] [Indexed: 11/23/2022] Open
Abstract
Background Long-acting injectable medications have become an important tool in the treatment of schizophrenia and schizoaffective disorder due to the high rates of medication nonadherence. Olanzapine long-acting injection (OLAI) is a useful therapeutic option for patients who have good tolerability and efficacy to oral olanzapine. Postinjection delirium/sedation syndrome (PDSS) is a rare but potentially serious event with the proposed mechanism of inadvertent intravascular injection of OLAI. This concern necessitates the requirement of a 3-hour monitoring period postinjection. Based on a literature review, there are no clearly defined risk factors for developing PDSS. Case Report A case is presented that describes PDSS in a transgender man undergoing hormone therapy with testosterone. The patient received OLAI for more than 3 years and developed PDSS 9 months after the initiation of injectable testosterone. Discussion There are published case reports of PDSS with the use of OLAI; however, there are no documented cases in a patient undergoing concurrent testosterone therapy. The effect that testosterone has on the vascular system and how it may alter the pharmacokinetics of OLAI has not been studied. Conclusion Despite proper injection technique, PDSS can occur after injection with OLAI. Further research is necessary to identify specific risk factors for the development of PDSS, including the potential effect that hormone therapy may have.
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Affiliation(s)
| | - Heather Walser
- 2 Clinical Pharmacy Specialist, Boise Veterans Affairs Medical Center, Boise, Idaho
| | - Anne C. Kelly
- 3 Psychiatrist, Boise Veterans Affairs Medical Center, Boise, Idaho
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Correll CU, Agid O, Crespo-Facorro B, de Bartolomeis A, Fagiolini A, Seppälä N, Howes OD. A Guideline and Checklist for Initiating and Managing Clozapine Treatment in Patients with Treatment-Resistant Schizophrenia. CNS Drugs 2022; 36:659-679. [PMID: 35759211 PMCID: PMC9243911 DOI: 10.1007/s40263-022-00932-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/26/2022] [Indexed: 12/14/2022]
Abstract
Treatment-resistant schizophrenia (TRS) will affect about one in three patients with schizophrenia. Clozapine is the only treatment approved for TRS, and patients should be treated as soon as possible to improve their chances of achieving remission. Despite its effectiveness, concern over side effects, monitoring requirements, and inexperience with prescribing often result in long delays that can expose patients to unnecessary risks and compromise their chances of achieving favorable long-term outcomes. We critically reviewed the literature on clozapine use in TRS, focusing on guidelines, systematic reviews, and algorithms to identify strategies for improving clozapine safety and tolerability. Based on this, we have provided an overview of strategies to support early initiation of clozapine in patients with TRS based on the latest evidence and our clinical experience, and have summarized the key elements in a practical, evidence-based checklist for identifying and managing patients with TRS, with the aim of increasing confidence in prescribing and monitoring clozapine therapy.
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Affiliation(s)
- C U Correll
- Department of Child and Adolescent Psychiatry, Charité Universitätsmedizin Berlin, Berlin, Germany.,Department of Psychiatry and Molecular Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA.,Department of Psychiatry, The Zucker Hillside Hospital, Northwell Health, Glen Oaks, NY, USA
| | - Ofer Agid
- Department of Psychiatry, University of Toronto, Toronto, Canada
| | | | - Andrea de Bartolomeis
- Section on Clinical Psychiatry and Psychology, Laboratory of Molecular and Translational Psychiatry and Unit of Treatment Resistant Psychosis, University of Naples Federico II, Naples, Italy
| | - Andrea Fagiolini
- Department of Molecular Medicine, University of Siena, Siena, Italy
| | - Niko Seppälä
- Department of Psychiatry Satasairaala, Harjavalta, Finland
| | - Oliver D Howes
- Institute of Psychiatry, Psychology and Neuroscience, King's College, London, UK.
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40
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Piacentino D, Bianchi E, De Donatis D, Florio V, Conca A. Therapeutic Drug Monitoring of Antidepressants: An Underused but Potentially Valuable Tool in Primary Care. Front Psychiatry 2022; 13:867840. [PMID: 35422716 PMCID: PMC9002103 DOI: 10.3389/fpsyt.2022.867840] [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: 02/01/2022] [Accepted: 03/07/2022] [Indexed: 11/13/2022] Open
Abstract
Depressive disorders are among the most burdensome diseases globally in terms of prevalence, as well as in terms of quality of life, morbidity, and mortality. Hence, it is becoming increasingly common for primary care physicians to administer and monitor the treatment of individuals affected by depressive disorders. In this framework, Therapeutic Drug Monitoring (TDM) comes to the forefront. TDM is the measurement of specific drugs in the blood or plasma/serum, and its usefulness lies in the fact that it allows physicians to assess drug levels to personalize and optimize treatments. TDM has been used for decades to measure several classes of psychotropic drugs, such as antiepileptics and antipsychotics, but the use of this tool is still in its infancy in regard to antidepressants. In the context of primary care, TDM of antidepressant drug treatment shows promise, as it can enable primary care physicians to monitor the safety and efficacy of the treatment, leaving to secondary care, i.e., psychiatrists, the management of the more complex clinical cases.
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Affiliation(s)
- Daria Piacentino
- Psychiatric Service of the Health District of Bozen, Bozen-Bolzano, Italy
| | - Esperia Bianchi
- Psychiatric Service of the Health District of Bozen, Bozen-Bolzano, Italy
| | | | - Vincenzo Florio
- Psychiatric Service of the Health District of Bozen, Bozen-Bolzano, Italy
| | - Andreas Conca
- Psychiatric Service of the Health District of Bozen, Bozen-Bolzano, Italy
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41
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Mercolini L. Editorial: Advances in therapeutic drug monitoring of psychiatric subjects: Analytical strategies and clinical approaches. Front Psychiatry 2022; 13:1056380. [PMID: 36329918 PMCID: PMC9623277 DOI: 10.3389/fpsyt.2022.1056380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 10/04/2022] [Indexed: 11/13/2022] Open
Affiliation(s)
- Laura Mercolini
- Research Group of Pharmaco-Toxicological Analysis (PTA Lab), Department of Pharmacy and Biotechnology (FaBiT), Alma Mater Studiorum-University of Bologna, Bologna, Italy
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42
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Schoretsanitis G, Haen E, Piacentino D, Conca A, Endres K, Hiemke C, Gründer G, Paulzen M. Effects of body weight, smoking status, and sex on plasma concentrations of once-monthly paliperidone palmitate. Expert Rev Clin Pharmacol 2021; 15:243-249. [PMID: 34918984 DOI: 10.1080/17512433.2022.2020641] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Knowledge about the impact of body composition features on pharmacokinetics of newer long-acting injectable antipsychotics is limited. METHODS We analyzed steady-state plasma concentrations of paliperidone in different body mass index (BMI), age, sex, and smoking status patient subgroups treated with once-monthly paliperidone palmitate (PP1M). Paliperidone plasma concentrations and dose-adjusted-plasma concentrations (C/D) from a therapeutic drug monitoring (TDM) database of PP1M-treated patients were compared among normal BMI, overweight, and obese patients as well as between females vs. males, elderly vs. non-elderly, and smokers vs. non-smokers using non-parametric tests. RESULTS In a total of 183 PP1M-treated patients, we found highly variable paliperidone plasma concentrations between individuals but no significant effect of PP1M dose or dosing intervals (p> 0.05). C/D ratios were similar in 54 obese, 82 overweight, and 47 normal BMI patients (p> 0.05). Females had 13.7% higher C/D ratios compared to males, yet this difference was not significant (p> 0.05). No differences were found between elderly vs. non-elderly patients or for smokers vs. non-smokers (p> 0.05). CONCLUSION Our findings suggest that age, sex, smoking, or body weight may not substantially affect pharmacokinetic indices of PP1M. The high interindividual variation of plasma concentrations implies that TDM may be helpful to enhance PP1M efficacy and tolerability.
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Affiliation(s)
- Georgios Schoretsanitis
- The Zucker Hillside Hospital, Psychiatry Research, Northwell Health, Glen Oaks, New York, NY, USA and Department of Psychiatry, Psychotherapy and Psychosomatics, Hospital of Psychiatry, University of Zurich, Zurich, Switzerland
| | - Ekkehard Haen
- Clinical Pharmacology, Department of Psychiatry and Psychotherapy and Department of Pharmacology and Toxicology, University of Regensburg, Regensburg, Germany
| | - Daria Piacentino
- Psychiatric Service of the Health District of Bolzano, Bolzano, Italy.,Clinical Psychoneuroendocrinology and Neuropsychopharmacology Section, National Institute on Drug Abuse Intramural Research Program and National Institute on Alcohol Abuse and Alcoholism Division of Intramural Clinical and Biological Research, The National Institutes of Health, Bethesda, MD, USA
| | - Andreas Conca
- Psychiatric Service of the Health District of Bolzano, Bolzano, Italy
| | - Katharina Endres
- Clinical Pharmacology, Department of Psychiatry and Psychotherapy and Department of Pharmacology and Toxicology, University of Regensburg, Regensburg, Germany
| | - Christoph Hiemke
- Department of Psychiatry and Psychotherapy and Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center of Mainz, Mainz, Germany
| | - Gerhard Gründer
- Department of Molecular Neuroimaging, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Michael Paulzen
- Alexianer Hospital Aachen, Aachen, Germany and Department of Psychiatry, Psychotherapy and Psychosomatics, RWTH Aachen University, and Jara - Translational Brain Medicine, Aachen, Germany
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43
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de Leon J, Schoretsanitis G, Smith RL, Molden E, Solismaa A, Seppälä N, Kopeček M, Švancer P, Olmos I, Ricciardi C, Iglesias-Garcia C, Iglesias-Alonso A, Spina E, Ruan CJ, Wang CY, Wang G, Tang YL, Lin SK, Lane HY, Kim YS, Kim SH, Rajkumar AP, González-Esquivel DF, Jung-Cook H, Baptista T, Rohde C, Nielsen J, Verdoux H, Quiles C, Sanz EJ, Las Cuevas CD, Cohen D, Schulte PFJ, Ertuğrul A, Yağcıoğlu AEA, Chopra N, McCollum B, Shelton C, Cotes RO, Kaithi AR, Kane JM, Farooq S, Ng CH, Bilbily J, Hiemke C, López-Jaramillo C, McGrane I, Lana F, Eap CB, Arrojo-Romero M, Rădulescu FŞ, Seifritz E, Every-Palmer S, Bousman CA, Bebawi E, Bhattacharya R, Kelly DL, Otsuka Y, Lazary J, Torres R, Yecora A, Motuca M, Chan SKW, Zolezzi M, Ouanes S, Berardis DD, Grover S, Procyshyn RM, Adebayo RA, Kirilochev OO, Soloviev A, Fountoulakis KN, Wilkowska A, Cubała WJ, Ayub M, Silva A, Bonelli RM, Villagrán-Moreno JM, Crespo-Facorro B, Temmingh H, Decloedt E, Pedro MR, Takeuchi H, Tsukahara M, Gründer G, Sagud M, Celofiga A, Ristic DI, Ortiz BB, Elkis H, Pacheco Palha AJ, LLerena A, Fernandez-Egea E, Siskind D, Weizman A, Masmoudi R, Saffian SM, Leung JG, Buckley PF, Marder SR, Citrome L, Freudenreich O, Correll CU, Müller DJ. An International Adult Guideline for Making Clozapine Titration Safer by Using Six Ancestry-Based Personalized Dosing Titrations, CRP, and Clozapine Levels. PHARMACOPSYCHIATRY 2021; 55:73-86. [PMID: 34911124 DOI: 10.1055/a-1625-6388] [Citation(s) in RCA: 95] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
This international guideline proposes improving clozapine package inserts worldwide by using ancestry-based dosing and titration. Adverse drug reaction (ADR) databases suggest that clozapine is the third most toxic drug in the United States (US), and it produces four times higher worldwide pneumonia mortality than that by agranulocytosis or myocarditis. For trough steady-state clozapine serum concentrations, the therapeutic reference range is narrow, from 350 to 600 ng/mL with the potential for toxicity and ADRs as concentrations increase. Clozapine is mainly metabolized by CYP1A2 (female non-smokers, the lowest dose; male smokers, the highest dose). Poor metabolizer status through phenotypic conversion is associated with co-prescription of inhibitors (including oral contraceptives and valproate), obesity, or inflammation with C-reactive protein (CRP) elevations. The Asian population (Pakistan to Japan) or the Americas' original inhabitants have lower CYP1A2 activity and require lower clozapine doses to reach concentrations of 350 ng/mL. In the US, daily doses of 300-600 mg/day are recommended. Slow personalized titration may prevent early ADRs (including syncope, myocarditis, and pneumonia). This guideline defines six personalized titration schedules for inpatients: 1) ancestry from Asia or the original people from the Americas with lower metabolism (obesity or valproate) needing minimum therapeutic dosages of 75-150 mg/day, 2) ancestry from Asia or the original people from the Americas with average metabolism needing 175-300 mg/day, 3) European/Western Asian ancestry with lower metabolism (obesity or valproate) needing 100-200 mg/day, 4) European/Western Asian ancestry with average metabolism needing 250-400 mg/day, 5) in the US with ancestries other than from Asia or the original people from the Americas with lower clozapine metabolism (obesity or valproate) needing 150-300 mg/day, and 6) in the US with ancestries other than from Asia or the original people from the Americas with average clozapine metabolism needing 300-600 mg/day. Baseline and weekly CRP monitoring for at least four weeks is required to identify any inflammation, including inflammation secondary to clozapine rapid titration.
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Affiliation(s)
- Jose de Leon
- Mental Health Research Center, Eastern State Hospital, Lexington, KY, USA.,Department of Psychiatry, University of Kentucky, Lexington, KY, USA.,Psychiatry and Neurosciences Research Group (CTS-549), Institute of Neurosciences, University of Granada, Granada, Spain.,Biomedical Research Centre in Mental Health Net (CIBERSAM), Santiago Apostol Hospital, University of the Basque Country, Vitoria, Spain
| | - Georgios Schoretsanitis
- Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric Hospital, University of Zürich, Zürich, Switzerland.,The Zucker Hillside Hospital, Psychiatry Research, Northwell Health, Glen Oaks, New York, USA
| | - Robert L Smith
- Center for Psychopharmacology, Diakonhjemmet Hospital, Oslo, Norway
| | - Espen Molden
- Center for Psychopharmacology, Diakonhjemmet Hospital, Oslo, Norway.,Section for Pharmacology and Pharmaceutical Biosciences, Department of Pharmacy, University of Oslo, Oslo, Norway
| | - Anssi Solismaa
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Department of Psychiatry, Tampere University Hospital, Tampere, Finland
| | | | - Miloslav Kopeček
- National Institute of Mental Health, Klecany, Czech Republic.,Department of Psychiatry, Charles University, Third Faculty of Medicine, Prague, Czech Republic
| | - Patrik Švancer
- National Institute of Mental Health, Klecany, Czech Republic.,Department of Psychiatry, Charles University, Third Faculty of Medicine, Prague, Czech Republic
| | - Ismael Olmos
- Clinical Pharmacology Unit and Pharmacy Department, Vilardebó Hospital, Administración de Servicios de Salud, Montevideo, Uruguay
| | - Carina Ricciardi
- Clinical Pharmacology Unit and Outpatient Clinic, Vilardebó Hospital, Administración de Servicios de Salud, Montevideo, Uruguay
| | - Celso Iglesias-Garcia
- Universidad de Oviedo. CIBERSAM. INEUROPA. ISPA-FIMBA, Oviedo, Spain.,Hospital Valle del Nalón, Langreo, Spain
| | | | - Edoardo Spina
- Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy
| | - Can-Jun Ruan
- Laboratory of Clinical Psychopharmacology, Beijing Anding Hospital, Capital Medical University, Beijing, China.,The National Clinical Research Centre for Mental Disorders & Beijing Key Lab of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing, China
| | - Chuan-Yue Wang
- The National Clinical Research Centre for Mental Disorders & Beijing Key Lab of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing, China.,Department of Psychiatry, Beijing Anding Hospital, Capital Medical University, Beijing, China
| | - Gang Wang
- The National Clinical Research Centre for Mental Disorders & Beijing Key Lab of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing, China
| | - Yi-Lang Tang
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, Georgia, USA.,Substance Abuse Treatment Program, Atlanta VA Medical Center, Decatur, Georgia, USA
| | - Shih-Ku Lin
- Department of Psychiatry, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan.,Department of Psychiatry, School of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Hsien-Yuan Lane
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan.,Department of Psychiatry and Brain Disease Research Center, China Medical University Hospital, Taichung, Taiwan.,Department of Psychology, College of Medical and Health Sciences, Asia University, Taichung, Taiwan
| | - Yong Sik Kim
- Department of Neuropsychiatry, Nowon Eulji Medical Center, Eulji University, School of Medicine, Seoul, Korea
| | - Se Hyun Kim
- Department of Psychiatry, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Anto P Rajkumar
- Department of Psychiatry, Christian Medical College, Vellore, India.,Institute of Mental Health, Jubilee Campus, University of Nottingham, Triumph Road, Nottingham, United Kingdom
| | | | - Helgi Jung-Cook
- Instituto Nacional de Neurología y Neurocirugía, México City, México.,Facultad de Química, Universidad Nacional Autónoma de México (UNAM), México City, México
| | - Trino Baptista
- Department of Physiology, Los Andes University Medical School, Mérida, Venezuela
| | - Christopher Rohde
- Department of Affective Disorders, Aarhus University Hospital - Psychiatry, Aarhus, Denmark.,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Jimmi Nielsen
- Mental Health Centre Glostrup, Copenhagen University Hospital, Copenhagen, Denmark
| | - Hélène Verdoux
- Univ. Bordeaux, Inserm, Bordeaux Population Health Research Center, Team Pharmacoepidemiology, UMR 1219, F-33000 Bordeaux, France
| | - Clelia Quiles
- Univ. Bordeaux, Inserm, Bordeaux Population Health Research Center, Team Pharmacoepidemiology, UMR 1219, F-33000 Bordeaux, France
| | - Emilio J Sanz
- Department of Physical Medicine and Pharmacology, School of Medicine, Universidad de La Laguna, Canary Islands, Spain.,Hospital Universitario de Canarias, Tenerife, Spain
| | - Carlos De Las Cuevas
- Department of Internal Medicine, Dermatology and Psychiatry, School of Medicine, and Instituto Universitario de Neurociencia (IUNE), University of La Laguna, Canary Islands, Spain
| | - Dan Cohen
- Dutch Clozapine Collaboration Group, Castricum, The Netherlands.,FACT-team in Heerhugowaard, Department of Severe Mental Illness, Mental Health Services North-Holland North, The Netherlands
| | - Peter F J Schulte
- Dutch Clozapine Collaboration Group, Castricum, The Netherlands.,Mental Health Team Alkmaar, Mental Health Services Noord-Holland-Noord, Alkmaar, The Netherlands
| | - Aygün Ertuğrul
- Department of Psychiatry, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | | | - Nitin Chopra
- Addictions Division, Centre for Addiction and Mental Health, Toronto, Canada.,Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
| | | | - Charles Shelton
- Department of Psychiatry, University of Kentucky, Lexington, KY, USA.,Eastern State Hospital, Lexington, Kentucky, USA
| | - Robert O Cotes
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, Georgia, USA
| | | | - John M Kane
- The Zucker Hillside Hospital, Psychiatry Research, Northwell Health, Glen Oaks, New York, USA.,Department of Psychiatry and Molecular Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell Hempstead, New York, USA
| | - Saeed Farooq
- School of Medicine, Keele University, Staffordshire, and Midlands Partnership NHS Foundation Trust, Staffordshire, United Kingdom
| | - Chee H Ng
- Department of Psychiatry, The University of Melbourne, Melbourne, Victoria, Australia
| | - John Bilbily
- Department of Psychiatry, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Christoph Hiemke
- Department of Psychiatry and Psychotherapy, University Medical Center of Mainz, Germany
| | - Carlos López-Jaramillo
- Grupo de Investigación en Psiquiatría GIPSI, Departamento de Psiquiatría, Facultad de Medicina, Universidad de Antioquia, Medellin, Colombia.,Programa Trastornos del Ánimo, Hospital Universitario San Vicente Fundación, Medellín, Colombia
| | - Ian McGrane
- Department of Pharmacy Practice, University of Montana, Missoula, USA
| | - Fernando Lana
- Institute of Neuropsychiatry and Addictions (INAD), Parc de Salut Mar, Barcelona, Spain.,Department of Psychiatry, Autonomous University of Barcelona, Spain
| | - Chin B Eap
- Unit of Pharmacogenetics and Clinical Psychopharmacology, Center for Psychiatric Neurosciences, Lausanne University Hospital and University of Lausanne, Switzerland.,Center for Research and Innovation in Clinical Pharmaceutical Sciences, Lausanne University Hospital and University of Lausanne, Switzerland.,School of Pharmaceutical Sciences, University of Geneva, Switzerland.,Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, University of Lausanne, Switzerland
| | - Manuel Arrojo-Romero
- Department of Psychiatry, Complejo Hospitalario Universitario de Santiago, Santiago de Compostela, Spain
| | - Flavian Ş Rădulescu
- Center for Drug Sciences, Faculty of Pharmacy, University of Medicine and Pharmacy Carol Davila, Bucharest, Romania
| | - Erich Seifritz
- Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric Hospital, University of Zürich, Zürich, Switzerland
| | - Susanna Every-Palmer
- Te Korowai Whāriki Central Regional Forensic Service, Capital and Coast District Health Board, Wellington, New Zealand.,Department of Psychological Medicine, University of Otago, Wellington, New Zealand
| | - Chad A Bousman
- Departments of Medical Genetics, Psychiatry, Physiology & Pharmacology, and Community Health Sciences University of Calgary, Alberta, Canada
| | - Emmanuel Bebawi
- Faculty of Medicine, University of Montreal, Montreal, Canada.,Department of Pharmacy, Hôpital du Sacré-Cœur de Montréal, Montreal, Canada
| | - Rahul Bhattacharya
- East London NHS Foundation Trust, London, United Kingdom.,Honorary Clinical Senior Lecturer, Barts and the London School of Medicine, Queen Mary University of London, United Kingdom
| | - Deanna L Kelly
- Department of Psychiatry, School of Medicine, Maryland Psychiatric Research Center, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Yuji Otsuka
- Department of Psychiatry, Asahi General Hospital, Chiba, Japan
| | - Judit Lazary
- National Institute of Mental Health, Neurology and Neurosurgery, Budapest, Hungary
| | - Rafael Torres
- Department of Psychiatry, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Agustin Yecora
- Secretaría de Salud Mental y Adicciones, Ministerio de Salud de la Provincia de Jujuy, San Salvador de Jujuy, Argentina
| | - Mariano Motuca
- Instituto Vilapriño, Center for Studies, Assistance and Research in Neurosciences, Mendoza, Argentina
| | - Sherry K W Chan
- Department of Psychiatry, LSK Faculty of Medicine, The University of Hong Kong, Hong Kong SAR.,State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong SAR
| | - Monica Zolezzi
- College of Pharmacy, QU Health, Qatar University, Doha, Qatar
| | - Sami Ouanes
- Department of Psychiatry, Hamad Medical Corporation, Doha, Qatar
| | | | - Sandeep Grover
- Department of Psychiatry, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Ric M Procyshyn
- British Columbia Mental Health and Substance Use Research Institute, Department of Psychiatry, University of British Columbia, Vancouver, BC, Canada
| | | | - Oleg O Kirilochev
- Department of Clinical Pharmacology, Astrakhan State Medical University, Astrakhan, Russian Federation
| | - Andrey Soloviev
- Department of Psychiatry and Clinical Psychology, Northern State Medical University, Arkhangelsk, Russia
| | - Konstantinos N Fountoulakis
- 3rd Department of Psychiatry, Division of Neurosciences, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Greece
| | - Alina Wilkowska
- Department of Psychiatry, Medical University of Gdańsk, Gdańsk, Poland
| | - Wiesław J Cubała
- Department of Psychiatry, Medical University of Gdańsk, Gdańsk, Poland
| | - Muhammad Ayub
- Department of Psychiatry, Queens University, Kingston, Canada
| | - Alzira Silva
- Psychiatry Department, Centro Hospitalar Universitário de S. João, Porto, Portugal., Faculdade de Medicina da Universidade do Porto, Porto, Portugal
| | | | - José M Villagrán-Moreno
- Department of Neurosciences, Jerez University Hospital, Andalusian Health Service, University of Cadiz, Jerez, Spain
| | - Benedicto Crespo-Facorro
- Department of Psychiatry, School of Medicine, University Hospital Virgen del Rocio-IBIS, Sevilla, Spain., Spanish Network for Research in Mental Health (CIBERSAM), Sevilla, Spain
| | - Henk Temmingh
- Department of Psychiatry and Mental Health, University of Cape Town, Valkenberg Hospital, Western Cape, Cape Town, South Africa
| | - Eric Decloedt
- Division of Clinical Pharmacology, Department of Medicine, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | | | - Hiroyoshi Takeuchi
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan
| | - Masaru Tsukahara
- Department of Psychiatry, Okayama Psychiatric Medical Center, Okayama, Japan
| | - Gerhard Gründer
- Central Institute of Mental Health, Department of Molecular Neuroimaging, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Marina Sagud
- Department of Psychiatry, School of Medicine, University of Zagreb, Zagreb, Croatia.,Department for Psychiatry and Psychological Medicine, University Hospital Center Zagreb, Croatia
| | - Andreja Celofiga
- Department of Psychiatry, University Medical Centre Maribor, Maribor, Slovenia
| | | | - Bruno B Ortiz
- Group of Resistant Schizophrenia (GER), Schizophrenia Program (Proesq), Federal University of Sao Paulo, SP, Brazil
| | - Helio Elkis
- Department and Institute of Psychiatry, University of São Paulo Medical School (FMUSP), Sao Paulo, Brazil
| | - António J Pacheco Palha
- Department and Institute of Psychiatry and Mental Health, Oporto Faculty of Medicine, Oporto, Portugal.,Casa de Salidedo Som Jesus (Psychiatric Hospital), Oporto, Portugal
| | - Adrián LLerena
- INUBE Biosanitary Research Institute of Extremadura. Extremadura University Hospital and Medical School, Badajoz, Spain.,Spanish Network for Research in Mental Health (CIBERSAM), Instituto de Salud Carlos III, Madrid, Spain
| | - Emilio Fernandez-Egea
- Cambridge Psychosis Centre, Cambrigeshire and Peterborough NHS Foundation Trust & Department of Psychiatry, University of Cambridge, Cambridge, United Kingdom
| | - Dan Siskind
- Metro South Addiction and Mental Health Service, Brisbane, Australia.,Queensland Centre for Mental Health Research and School of Clinical Medicine, University of Queensland, Brisbane, Australia
| | - Abraham Weizman
- Research Unit, Geha Mental Health Center and Molecular Psychiatry Laboratory, Felsenstein Medical Research Center, Tel Aviv, Israel.,Department of Psychiatry Sackler Faculty of Medicine and Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
| | - Rim Masmoudi
- Psychiatry "A" Department, Hedi Chaker University Hospital, Sfax, Tunisia.,Faculty of Medicine, University of Sfax, Sfax, Tunisia
| | - Shamin Mohd Saffian
- Centre for Quality Management of Medicines, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | | | - Peter F Buckley
- School of Medicine, Virginia Commonwealth University, Richmond, VA, USA
| | - Stephen R Marder
- Semel Institute for Neuroscience at UCLA, Los Angeles, CA, USA.,VA Desert Pacific Mental Illness Research, Education, and Clinical Center, Los Angeles, CA, USA
| | - Leslie Citrome
- New York Medical College, Department of Psychiatry and Behavioral Sciences, Valhalla, NY, USA
| | - Oliver Freudenreich
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Christoph U Correll
- The Zucker Hillside Hospital, Psychiatry Research, Northwell Health, Glen Oaks, New York, USA.,Department of Psychiatry and Molecular Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell Hempstead, New York, USA.,Charité Universitätsmedizin Berlin, Department of Child and Adolescent Psychiatry, Berlin, Germany
| | - Daniel J Müller
- Addictions Division, Centre for Addiction and Mental Health, Toronto, Canada.,Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
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44
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Dobrek L. Chronopharmacology in Therapeutic Drug Monitoring-Dependencies between the Rhythmics of Pharmacokinetic Processes and Drug Concentration in Blood. Pharmaceutics 2021; 13:1915. [PMID: 34834330 PMCID: PMC8624108 DOI: 10.3390/pharmaceutics13111915] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/31/2021] [Accepted: 11/08/2021] [Indexed: 11/23/2022] Open
Abstract
The objective of the optimization of pharmacotherapy compliant with the basic rules of clinical pharmacology is its maximum individualization, ensuring paramount effectiveness and security of the patient's therapy. Thus, multiple factors that are decisive in terms of uniqueness of treatment of the given patient must be taken into consideration, including, but not limited to, the patient's age, sex, concomitant diseases, special physiological conditions (e.g., pregnancy, lactation, extreme age groups), polypharmacotherapy and polypragmasia (particularly related to increased risk of drug interactions), and patient's phenotypic response to the administered drug with possible genotyping. Conducting therapy while monitoring the concentration of certain drugs in blood (Therapeutic Drug Monitoring; TDM procedure) is also one of the factors enabling treatment individualization. Furthermore, another material, and yet still a marginalized pharmacotherapeutic factor, is chronopharmacology, which indirectly determines the values of drug concentrations evaluated in the TDM procedure. This paper is a brief overview of chronopharmacology, especially chronopharmacokinetics, and its connection with the clinical interpretation of the meaning of the drug concentrations determined in the TDM procedure.
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Affiliation(s)
- Lukasz Dobrek
- Department of Clinical Pharmacology, Wroclaw Medical University, 50-556 Wroclaw, Poland
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45
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Siskind D, Sharma M, Pawar M, Pearson E, Wagner E, Warren N, Kisely S. Clozapine levels as a predictor for therapeutic response: A systematic review and meta-analysis. Acta Psychiatr Scand 2021; 144:422-432. [PMID: 34374073 DOI: 10.1111/acps.13361] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 08/04/2021] [Accepted: 08/05/2021] [Indexed: 12/14/2022]
Abstract
OBJECTIVES Clozapine levels may be a more useful predictor of therapeutic response than the dose, given the variability in clozapine metabolism between individuals. We therefore systematically reviewed and meta-analysed the impact of clozapine levels on response and/or relapse to provide guidance on optimal clozapine levels. METHODS We systematically searched PubMed, PsycInfo and Embase for studies exploring clozapine levels and response and/or relapse. Our primary meta-analysis was rates of response above and below clozapine level thresholds of 350 ng/ml and 600 ng/ml. Secondary analyses were undertaken of mean clozapine levels, dose and concentration/dose (C/D) ratio and response and/or relapse. A meta-regression by study duration was conducted. RESULTS Twenty studies met inclusion criteria. Clozapine levels above 350 ng/ml were associated with statistically significantly higher rates of response (OR 2.27 95% CI 1.40-3.67, p < 0.001), but not above 600 ng/ml (OR 1.40 95% CI 0.85-2.31, p = 0.19). Higher mean clozapine levels were associated with better rates of response (SMD 0.24, 95% CI 0.00-0.49, p = 0.05), and lower rates of relapse (SMD -0.72, 95% CI -1.26 to -0.19, p = 0.008). By contrast, neither clozapine dose nor C/D ratio was associated with differing rates of response. Similarly, study duration did not affect outcome. CONCLUSIONS Our findings are in keeping with current guidelines that recommend targeting clozapine levels above 350 ng/ml before augmentation is considered. As some clozapine associated ADRs are dose dependent, levels above 600 ng/ml may have an unfavourable risk-benefit ratio.
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Affiliation(s)
- Dan Siskind
- Metro South Addiction and Mental Health Service, Brisbane, QLD, Australia.,School of Clinical Medicine, University of Queensland, Brisbane, QLD, Australia.,Physical and Mental Health Stream, Queensland Centre for Mental Health Research, Brisbane, QLD, Australia
| | - Meghna Sharma
- School of Clinical Medicine, University of Queensland, Brisbane, QLD, Australia.,Cairns Base Hospital, Cairns, QLD, Australia
| | - Mrinal Pawar
- School of Clinical Medicine, University of Queensland, Brisbane, QLD, Australia.,Royal Brisbane and Women's Hospital, Brisbane, QLD, Australia
| | - Ella Pearson
- School of Biomedical Sciences, University of Queensland, Brisbane, QLD, Australia
| | - Elias Wagner
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany
| | - Nicola Warren
- Metro South Addiction and Mental Health Service, Brisbane, QLD, Australia.,School of Clinical Medicine, University of Queensland, Brisbane, QLD, Australia.,Physical and Mental Health Stream, Queensland Centre for Mental Health Research, Brisbane, QLD, Australia
| | - Steve Kisely
- Metro South Addiction and Mental Health Service, Brisbane, QLD, Australia.,School of Clinical Medicine, University of Queensland, Brisbane, QLD, Australia.,Physical and Mental Health Stream, Queensland Centre for Mental Health Research, Brisbane, QLD, Australia.,Departments of Psychiatry, Community Health and Epidemiology, Dalhousie University, Halifax, NS, Canada
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46
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Lu DH, Dopheide JA, Wang D, Jeffrey JK, Chen S. Collaboration Between Child and Adolescent Psychiatrists and Mental Health Pharmacists to Improve Treatment Outcomes. Child Adolesc Psychiatr Clin N Am 2021; 30:797-808. [PMID: 34538449 DOI: 10.1016/j.chc.2021.06.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Access to mental health care is a long-standing challenge. The high, rising prevalence of mental health disorders and a shortage of mental health professionals has further strained an already fragile system. The clinical pharmacy is underutilized within the mental health space. Interdisciplinary collaboration between child psychiatrists and mental health pharmacists gives the psychiatrist more time for patient evaluation and treatment, while the psychiatric pharmacist provides drug monitoring, medication coordination, and education for providers. This collaborative approach improves outcomes, prevents adverse drug events, reduces hospital stays, lessens emergency department visits, and improves engagement and adherence.
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Affiliation(s)
- Debbie H Lu
- Touro University California, College of Pharmacy, 1310 Club Drive, Vallejo, CA 94592, USA.
| | - Julie A Dopheide
- Psychiatry and the Behavioral Sciences, University of Southern California School of Pharmacy and Keck School of Medicine, 1985 Zonal Avenue, Los Angeles, CA 90089, USA
| | - Dri Wang
- Otsuka Pharmaceutical Development and Comercialization, 508 Carnegie Center Drive, Princeton, New Jersey 08540, USA
| | - Jessica K Jeffrey
- Division of Population Behavioral Health; Division of Child and Adolescent Psychiatry; UCLA Behavioral Health Associates; UCLA Department of Psychiatry and Biobehavioral Sciences, UCLA Semel Institute of Neuroscience and Human Behavior, 760 Westwood Plaza, A7-372A, Los Angeles, CA 90024, USA
| | - Steven Chen
- Department of Clinical Pharmacy, University of Southern California School of Pharmacy, Los Angeles, CA 90089, USA
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47
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Taub S, Krivoy A, Whiskey E, Shergill SS. New approaches to antipsychotic medication adherence - safety, tolerability and acceptability. Expert Opin Drug Saf 2021; 21:517-524. [PMID: 34541978 DOI: 10.1080/14740338.2021.1983540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
INTRODUCTION Antipsychotic pharmacotherapy is considered a first-line treatment in schizophrenia-related disorders and is associated with favorable prognosis and lower mortality rates. However, low adherence rates present a major clinical challenge. In this paper, we will review contemporary approaches to improve adherence to antipsychotic treatment, considering their mechanism of action, safety, tolerability and acceptability. AREAS COVERED Novel pharmacological delivery methods included different routes of administration of registered medications (such as intramuscular clozapine preparation and transdermal asenapine), modifications of existing compounds (such as 3-monthly injectable formulation of paliperidone palmitate), and increased interest in oral long-acting medication formulations (such as with penfluridol). In addition, we reviewed innovative technology to monitor adherence, based on the use of electronic digital medicine systems and ingestible sensors. EXPERT OPINION All of these diverse approaches were clinically relevant in enhancing treatment adherence and found to be safe and tolerable. The place of each approach is predicated on a personalized approach in each patient, and future research could usefully use large comparative studies to establish robust treatment guidelines. The implementation of new and varied approaches to antipsychotic treatment adherence is welcomed and have the potential to make a significant impact on morbidity in this often difficult-to-treat population.
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Affiliation(s)
- Sharon Taub
- Geha Mental Health Center, Petach-Tikva, Israel
| | - Amir Krivoy
- Geha Mental Health Center, Petach-Tikva, Israel.,Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel.,Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Eromona Whiskey
- Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK.,National Psychosis Unit, South London and Maudsley NHS Foundation Trust, London, UK
| | - Sukhi S Shergill
- Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK.,National Psychosis Unit, South London and Maudsley NHS Foundation Trust, London, UK.,Kent and Medway Medical School, Canterbury, UK
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48
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McGrane IR, Lindbloom TJ, Munjal RC. Possible inhibitory effects of terbinafine on aripiprazole metabolism: Two case reports. Ment Health Clin 2021; 11:297-300. [PMID: 34621606 PMCID: PMC8463003 DOI: 10.9740/mhc.2021.09.297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 07/23/2021] [Indexed: 11/13/2022] Open
Abstract
Aripiprazole, an atypical antipsychotic, is a metabolic substrate for cytochrome P450 (CYP)3A4 and 2D6. Terbinafine, an antifungal agent used for onychomycosis, is a CYP2D6 inhibitor and could theoretically reduce the metabolism of aripiprazole. However, there are no published reports describing this interaction. We present 2 female patients hospitalized in a psychiatric unit who were both taking aripiprazole 15 mg daily and terbinafine 250 mg daily prior to admission. The first patient was a 58-year-old female who was prescribed aripiprazole and terbinafine concomitantly for approximately 5 months prior to admission. A commercial pharmacogenetic testing platform classified this patient as a normal metabolizer for CYP3A4 and 2D6. The first patient's serum trough aripiprazole concentration at steady-state concentration (Css) was 207.5 ng/mL. The second patient was a 43-year-old female who was taking aripiprazole and terbinafine concomitantly for approximately 2 weeks prior to admission who had a Css aripiprazole concentration of 278.9 ng/mL. Aripiprazole has a wide therapeutic range (100 to 350 ng/mL) and a reference dose-related drug concentration of 11.7 (mean) ± 5.6 (SD) ng/mL/mg/d. Our patients had Css aripiprazole concentrations 18% and 59% higher than guideline-supported dose-related drug concentrations. Through the use of therapeutic drug monitoring, pharmacogenetic data, electronic pharmaceutical claims data, and the Drug Interaction Probability Scale, we suggest terbinafine possibly increases aripiprazole concentrations 18% to 59%. Further reports are needed to confirm these findings prior to using this information in clinical practice.
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Affiliation(s)
- Ian R McGrane
- Student, Skaggs School of Pharmacy, The University of Montana, Missoula, Montana
- Psychiatrist, Providence St Patrick Hospital, Department of Psychiatry, Missoula, Montana
| | - Tori J Lindbloom
- Student, Skaggs School of Pharmacy, The University of Montana, Missoula, Montana
| | - Robert C Munjal
- Psychiatrist, Providence St Patrick Hospital, Department of Psychiatry, Missoula, Montana
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49
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de Leon J. Commentary on 'tools for optimizing pharmacotherapy in psychiatry (therapeutic drug monitoring, molecular brain imaging and pharmacogenetic tests): focus on antidepressants'. Pharmacogenomics 2021; 22:805-808. [PMID: 34344160 DOI: 10.2217/pgs-2021-0090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Jose de Leon
- Mental Health Research Center, Eastern State Hospital, Lexington, KY 40511, USA.,Psychiatry & Neurosciences Research Group (CTS-549), Institute of Neurosciences, University of Granada, Granada, Spain.,Biomedical Research Centre in Mental Health Net (CIBERSAM), Santiago Apóstol Hospital, University of the Basque Country, Vitoria, Spain
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50
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Clarke WA, Salyer B, Hussey C, Gardiner J, Johnson-Davis K, Milone MC. Multi-Site Evaluation of Immunoassays for Antipsychotic Drug Measurement in Clinical Samples. J Appl Lab Med 2021; 6:1541-1550. [PMID: 34329438 DOI: 10.1093/jalm/jfab062] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 05/17/2021] [Indexed: 11/12/2022]
Abstract
BACKGROUND Atypical antipsychotic drugs are frequently used in the treatment of serious mental illness (SMI), specifically schizophrenia and bipolar disorder. Adherence to these prescribed drug regimens is a challenge to successful treatment with these drugs. For some of the more common drugs in this class, novel turbidimetric immunoassays have been developed for therapeutic drug monitoring (TDM) to aid in the management of patients prescribed these drugs. METHODS Immunoassays for aripiprazole, clozapine, olanzapine, paliperidone, quetiapine, and risperidone were set up at 2 centers: Johns Hopkins Hospital (JHH) on the Roche Cobas® c501, and the Hospital of the University of Pennsylvania (HUP) on the Beckman AU480. Assay imprecision, limit of quantification (LOQ), functional sensitivity, linearity, and recovery were assessed. Remnant clinical samples were obtained from a reference laboratory (ARUP), and immunoassay results were compared with those obtained by LC-MS/MS. RESULTS Imprecision at both sites for all analytes and concentrations tested was <10%. The manufacturer's LOQ was confirmed for each assay, and the functional sensitivity for each assay was found to be lower than the LOQ. All assays were found to be linear over the measuring range, with recoveries ranging from 91% to 123%. For method comparison, Deming regression slopes were found to be between 0.84 to 1.28. CONCLUSION The immunoassays evaluated here are suitable for quantifying drug concentrations to be used in TDM for all 6 drugs. Commercialization of these assays will enable increased access for TDM in psychiatric patient management.
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Affiliation(s)
- William A Clarke
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Bruce Salyer
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Casey Hussey
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD
| | - JoAnn Gardiner
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA
| | - Kamisha Johnson-Davis
- Department of Pathology, University of Utah Health Sciences Center, Salt Lake City, UT.,ARUP Institute for Clinical and Experimental Pathology, Salt Lake City, UT
| | - Michael C Milone
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA
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