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Eli Lilly & Co. Ltd, Basingstoke, UK
Pharmacology Department, National University of Ireland, Galway, Ireland
Correspondence: Dr Chris Bushe, Eli Lilly & Co. Ltd, Lilly House, Priestley Road, Basingstoke RG24 9NL,UK. Tel: (0)1256 775971; fax: (0)1256 775534; e-mail: bushe_chris{at}lilly.com
Declaration of interest C.B. is employed by Eli Lilly & Co. Ltd. B.L. has been consultantto Eli Lilly & Co. in regard to diabetes and schizophrenia.
Background Most evidence suggesting an association between schizophrenia, antipsychotic medications and diabetes has been based on retrospective studies not controlled for important confounders.
Aims To compare diabetogenic risk between antipsychotic medications; and to describe the limitations of current prospective data-sets.
Method Systematic review of prospective clinical data.
Results No difference in the incidence of glycaemic abnormalities between placebo cohorts and antipsychotic medication cohorts was identified. No significant difference between any of the antipsychotic medications studied in terms of their association with glycaemic abnormalities was identified. Treatment-related weight gain did not appear to increase the riskof developing diabetes.
Conclusions Diabetogenic potential ascribed to atypical antipsychotic drugs, resulting from retrospective studies, may be incorrect. Cohort sizes andincomplete sampling must preclude any definitive conclusions. Long-term, large, comparative prospective trials are needed, along with agreement upon glucose measurement of choice.
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