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- Title
Factors affecting interindividual differences in clozapine response: a review and case report.
- Authors
Bersani, Francesco Saverio; Capra, Enrico; Minichino, Amedeo; Pannese, Rossella; Girardi, Nicoletta; Marini, Isabella; Delle Chiaie, Roberto; Biondi, Massimo
- Abstract
Objective Clozapine is the most powerful new-generation antipsychotic. Although this drug leads to great therapeutic benefits, two types of undesirable conditions frequently occur with its use: side effects and resistance to treatment. Therapeutic drug monitoring of clozapine would be very useful to avoid both these situations. The necessity of monitoring the therapy is the result of a wide interindividual variability in the metabolism of clozapine. In this review, we highlight all the conditions underlying this variability, analyzing them one by one. Methods Relevant literature was identified through a search of MEDLINE and PubMed. In addition, the case of a treatment-resistant patient with accelerated metabolism of clozapine is reported as representative of utility of therapeutic drug monitoring in terms of clozapine dose adjustment. Results Genetic polymorphisms of cytochrome P450 enzymes and of neurotransmitter receptors; drug interactions; interactions of clozapine with other substances such as food and drink; smoking; and nonmodifiable variables such as age, ethnicity, and gender have been examined in relation to the existing scientific literature. The laboratory techniques that clinicians could use to identify these variables and adequate therapies are also reviewed. Copyright © 2011 John Wiley & Sons, Ltd.
- Subjects
CLOZAPINE; CASE studies; DRUG interactions; PHARMACODYNAMICS; SIDE effects of antipsychotic drugs
- Publication
Human Psychopharmacology: Clinical & Experimental, 2011, Vol 26, Issue 3, p177
- ISSN
0885-6222
- Publication type
Article
- DOI
10.1002/hup.1191