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Cited by 22Bipolar Disorder and TreatmentTreatment of Major DepressionPharmacogenetics and Drug Metabolism

The DOI matches its Crossref record; 11 of the 11 references it cites were found in a registry or an index.

Retrospective Analysis of Therapeutic Drug Monitoring Data for Treatment of Bipolar Disorder with Lamotrigine

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Unholzer, S., Haen, E.·2015·Pharmacopsychiatry

Abstract

INTRODUCTION: Lamotrigine is licensed for treatment of epilepsy and prevention or at least delay of depressive episodes in bipolar disorder. The accepted therapeutic reference range (TRR) of lamotrigine for anticonvulsant treatment is 3 000-14 000 ng/ml. This TRR is often used for the therapy of bipolar disorders as well. This work presents serious doubts about this approach. METHODS: KONBEST, a large TDM database containing patients' characteristics including diagnoses, doses, comedication and serum concentrations, was analyzed. Out of a total of 3 459 lamotrigine samples, 360 patients suffered from bipolar disorder. 82 of them benefitted from therapy with lamotrigine as judged by the clinical global impression of improvement (CGI-I) scale. Patients with a score of minimally (3), much (2) or very much improved (1) were considered as responders. RESULTS: The recommended lamotrigine maintenance dose for bipolar disorder is 200 mg/day; the doses prescribed in our samples ranged from 25 to 450 mg/day. Only 32 concentrations (39.0%) fitted into the TRR recommended for therapy of epilepsy; 50 (61.0%) did not reach it, none exceeded it. The lowest concentration was 177 ng/ml, the highest 11 871 ng/ml. A mean lamotrigine serum concentration of 3 341±2 563 ng/ml (̅x±SD) was detected in the patients who benefitted. DISCUSSION: The authors conclude that in bipolar disorder lower lamotrigine serum concentrations lead to therapeutic benefit.

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Cites

Research works printed but not linked: 5

  1. Guy W, edited by Rush AJ. Clinical Global Impressions Scale (CGI). Handbook of Psychiatric Measures. Washington, DC: American Psy- chiatric Association; 2000: 100-102
  2. World Health Organization (WHO). The ICD-10 classification of mental and behavioural disorders: clinical descriptions and diagnostic guide- lines. World Health Organization; 1992: 50-51
  3. Haen E, Greiner C, Bader W et al. Wirkstoffkonzentrationsbestimmun- gen zur Therapieleitung -Ergänzung therapeutischer Referenzbere- iche durch dosisbezogene Referenzbereiche (Engl. abstract: Expanding therapeutic reference ranges using dose-related reference ranges). Der Nervenarzt 2008; 79: 558-566
  4. Haen E. Der TDM-Befund (Engl. abstract: The TDM Report). Psychop- harmakotherapie 2012; 19: 129-134
  5. Goa KL, Ross SR, Chrisp P. Lamotrigine. A review of its pharmacological properties and clinical efficacy in epilepsy. Drugs 1993; 46: 152-176

Cited by

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Metadata

Authors
Unholzer, S., & Haen, E.
Affiliations
University of Regensburg (DE)
Corresponding author
Unholzer, S.
Venue
Pharmacopsychiatry
Published
2015-08-07
Volume
48
Issue
06
Pages
211-214
ISSN
  • 0176-3679 (ISSN-L)
  • 1439-0795
OpenAlex
W2259338861
Cited by
22
References
11
Citations by year
2026: 3 · 2025: 1 · 2024: 1 · 2023: 3 · 2021: 3 · 2020: 1 · 2019: 1 · 2018: 3 · 2017: 3 · 2016: 2 · 2015: 1
FWCI
2.43
Type
journal article
Language
en
Open access
Locations
  • Pharmacopsychiatry (publishedVersion)
  • PubMed (publishedVersion)
  • University of Regensburg Publication Server (University of Regensburg) (acceptedVersion)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Bipolar Disorder and Treatment
  • Health Sciences › Medicine › Pharmacology (medical) › Treatment of Major Depression
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmacology › Pharmacogenetics and Drug Metabolism
Keywords
lamotrigine, bipolar disorder, therapeutic drug monitoring, serum drug concentration, therapeutic window, anticonvulsant dosing, treatment response, dose-concentration relationship
MeSH terms
Lamotrigine, Adult, Aged, Aged, 80 and over, Anticonvulsants, Bipolar Disorder, Dose-Response Relationship, Drug, Female, Humans, Male, Retrospective Studies, Triazines, Drug Monitoring, Databases, Pharmaceutical

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