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Treatment of clozapine- and molindone-induced agranulocytosis with granulocyte colony-stimulating factor.

Author(s): Geibig CB, Marks LW

Affiliation(s): Department of Pharmaceutical Services, Saint Mary's Health Services, Grand Rapids, MI 49503.

Publication date & source: 1993-10, Ann Pharmacother., 27(10):1190-4.

Publication type: Case Reports

OBJECTIVE: To report a case of clozapine- and molindone-induced agranulocytosis and to discuss treatment using filgrastim, a granulocyte colony-stimulating factor. CASE SUMMARY: A 64-year-old woman who had been on long-term clozapine therapy for schizophrenia was hospitalized with presumed drug-induced agranulocytosis. She had also been on short-term molindone therapy. A bone marrow biopsy and the initial white blood cell (WBC) count were consistent with drug-induced agranulocytosis. Following seven days of treatment with subcutaneous filgrastim 300 micrograms/d, her absolute neutrophil count was above 500 x 10(6)/L. DISCUSSION: Reports in the literature discussing antipsychotic drug-induced agranulocytosis are reviewed. A relationship between treatment with filgrastim and WBC response is postulated. CONCLUSIONS: Filgrastim may be useful in ameliorating the effects of clozapine- and molindone-induced agranulocytosis.

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