Evidence map›Paper›PMID 32289791›Full record

ReviewPsychotherapy and psychosomatics2020

A Rational Use of Clozapine Based on Adverse Drug Reactions, Pharmacokinetics, and Clinical Pharmacopsychology.

Jose de Leon, Can-Jun Ruan, Georgios Schoretsanitis, Carlos De Las Cuevas

Open access · bronzeAbstract readReview
In one paragraph

Review in Psychotherapy and psychosomatics, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 72 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
72citing papers in PubMed, 3 pooled it
16.8field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

72 citing papers in PubMed, 3 syntheses or guidelines pooled it, 155 citations in OpenAlex.

  1. Pooled it
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  5. Review
  6. Article
  7. Clozapine-induced Myocarditis in Korea: Analysis of a Nationwide Database and Comparison to Other Countries.Clinical psychopharmacology and neuroscience : the official scientific journal of the Korean College of Neuropsychopharmacology · 2026
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  18. Clozapine is a functional antagonist at cardiac human HNaunyn-Schmiedeberg's archives of pharmacology · 2025
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  19. Review
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12 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 4 institutions in 3 countries.

Jose de LeonMental Health Research Center at Eastern State Hospital, Lexington, Kentucky, USA, jdeleon@uky.edu.
Can-Jun RuanThe National Clinical Research Centre for Mental Disorders, Beijing Key Laboratory of Mental Disorders, and Laboratory of Clinical Psychopharmacology, Beijing Anding Hospital, Capital Medical University, Beijing, China.
Georgios SchoretsanitisDepartment of Psychiatry, Zucker Hillside Hospital, Northwell Health, Glen Oaks, New York, USA.
Carlos De Las CuevasDepartment of Internal Medicine, Dermatology and Psychiatry, University of La Laguna, San Cristóbal de La Laguna, Spain.
Capital Medical University · CNNorthwell Health · USUniversidad de La Laguna · ESUniversity of the Basque Country · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Using Richardson and Davidson's model and the sciences of pharmacokinetics and clinical pharmacopsychology, this article reviewed the: (1) poor life expectancy associated with treatment-resistant schizophrenia (TRS), which may be improved in patients who adhere to clozapine; (2) findings that clozapine is the best treatment for TRS (according to efficacy, effectiveness and well-being); and (3) potential for clozapine to cause vulnerabilities, including potentially lethal adverse drug reactions such as agranulocytosis, pneumonia, and myocarditis. Rational use requires: (1) modification of the clozapine package insert worldwide to include lower doses for Asians and to avoid the lethality associated with pneumonia, (2) the use of clozapine levels for personalizing dosing, and (3) the use of slow and personalized titration. This may make clozapine as safe as possible and contribute to increased life expectancy and well-being. In the absence of data on COVID-19 in clozapine patients, clozapine possibly impairs immunological mechanisms and may increase pneumonia risk in infected patients. Psychiatrists should call their clozapine patients and families and explain to them that if the patient develops fever or flu-like symptoms, the psychiatrist should be called and should consider halving the clozapine dose. If the patient is hospitalized with pneumonia, the treating physician needs to assess for symptoms of clozapine intoxication since halving the dose may not be enough for all patients; consider decreasing it to one-third or even stopping it. Once the signs of inflammation and fever have disappeared, the clozapine dose can be slowly increased to the prior dosage level.

Indexed as

Antipsychotic AgentsAsian PeopleClozapineCoronavirus InfectionsCOVID-19Drug LabelingHumansPandemicsPneumoniaPneumonia, ViralPsychiatrySchizophreniaAntipsychotic AgentsClozapineAsian continental ancestry group/geneticsClozapine/adverse effectsClozapine, bloodClozapine/metabolismClozapine/toxicityCOVID-19Drug labelingInfectionInflammationMortality/drug effects

Identifiers

PMID32289791
PMCPMC7206357
OpenAlexW3016066126

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.