Hematological safety of olanzapine

• Authors: Asem A Alageel , Eisha M Gaffas

Title variants

PL

Bezpieczeństwo hematologiczne olanzapiny

• Languages of publication: EN PL

Abstracts

EN

Olanzapine is an atypical antipsychotic medication, previously expected to be safe in terms of hematological side effects and considered an alternative choice to clozapine in patients who develop hematotoxicities. However, since olanzapine was introduced to the market many case reports have been published revealing that it could cause hematoxicity. Some of these reports also indicated that olanzapine induced agranulocytosis. Therefore, we conducted a systemic review to explore and address this issue. Electronic database searches from 1998 to 2015 yielded 35 case reports of olanzapine-induced leukopenia and three related systematic reviews. The onset of leukopenia for the majority of these case reports followed in the first month of administration of olanzapine. Moreover, more than two third of these cases never developed drug-related leukopenia before the use of olanzapine. The ages of affected individuals were 16 to 83 years old and their races were African, Caucasian, Asian, Jewish and Mediterranean. The doses of olanzapine ranged from 2.5 to 30 mg. Interestingly, olanzapine was associated with third highest incidence of neutropenia among antipsychotics. The mechanism of olanzapine-induced neutropenia is still unknown, but could be similar to clozapine because of similar chemical composition. Therefore we recommend that the guidelines regarding olanzapine need to be reconsidered and closely monitored with patients being treated with olanzapine for hematological side effects.

PL

Olanzapina to nietypowy lek przeciwpsychotyczny, dotychczas uznawany za bezpieczny pod względem hematologicznym i stosowany jako alternatywa dla klozapiny u pacjentów z objawami hemotoksyczności. Jednak od czasu wprowadzenia tego leku na rynek pojawiło się wiele doniesień dotyczących jego hematologicznych działań niepożądanych. Niektóre z tych prac wskazują także, że olanzapina może wywoływać agranulocytozę. Celem przeprowadzonego przeglądu systematycznego było zbadanie tego zagadnienia. W elektronicznych bazach danych z lat 1998–2015 odnaleziono 35 doniesień dotyczących leukopenii indukowanej olanzapiną oraz trzy podobne przeglądy systematyczne. W większości przypadków leukopenia rozwijała się po pierwszym miesiącu stosowania tego leku. Ponadto w ponad dwóch trzecich przypadków leukopenia nie występowała w przeszłości. Pacjenci byli w wieku 16–83 lat i należeli do ras afrykańskiej, kaukaskiej, azjatyckiej, żydowskiej i śródziemnomorskiej. Olanzapinę stosowano w dawkach od 2,5 do 30 mg. Co ciekawe, lek ten był na trzecim miejscu wśród leków przeciwpsychotycznych pod względem wywoływania neutropenii. Mechanizm neutropenii wywołanej olanzapiną pozostaje nieznany, ale może być zbliżony do klozapiny ze względu na podobny skład chemiczny. W związku z powyższym uważamy, że wytyczne dotyczące olanzapiny należy na nowo przemyśleć, a pacjentów stosujących ten lek trzeba obserwować pod kątem występowania hemotoksyczności.

Keywords

EN

agranulocytosis; agranulocytoza; leukopenia; neutropenia; olanzapina; olanzapine

Discipline

• MEDICINE: MEDICINE

• Publisher: Medical Communications
• Journal: Psychiatria i Psychologia Kliniczna
• Year: 2016
• Volume: 16
• Issue: 3
• Pages: 150–154

Contributors

author

Asem A Alageel

• Psychiatry Department, College of Medicine, Imam Univeristy, Po Box 26181, Riyadh, Saudi Arabia 11486, tel.: [phone], fax: [phone]

author

Eisha M Gaffas

• Consultant Psychiatrist, Alamal Complex for Mental Health, Riyadh, Saudi Arabia

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• Document Type: review