Assessing Home Health Care Pharmacists' Knowledge of Cytochrome P450 Pharmacogenetics

Author:

Rogers Janyce F1,Kidd Robert S2

Affiliation:

1. JANYCE F ROGERS PharmD, Clinical Research Scientist, Central Nervous System, Pfizer Global Research & Development, Eastern Point Rd., MS 8260-2219, Groton CT 06340, FAX 815/461-4568

2. ROBERT S KIDD PharmD MS, Assistant Professor, Department of Biopharmaceutical Sciences, Bernard J Dunn School of Pharmacy, Shenandoah University, Winchester, VA

Abstract

Objective: Genetic code governs cytochrome P450 activity as a consequence, it may influence an individual's response to medications metabolized by these enzymes. Pharmacists have a prominent role in providing education concerning adverse drug reactions and variability in drug response. This investigation assessed the knowledge of a group of pharmacists regarding cytochrome P450 pharmacogenetics. Methods: This observational, cross-sectional study presented a Web–based questionnaire available for completion by pharmacists contacted via E-mail. Fifty-two pharmacists involved with a nationwide home-care facility participated in the study on a volunteer basis. The main outcome measure was percentage score on a 10-question examination. Results: Fifty-two of 171 contacted pharmacists participated in the study, yielding a response rate of 30%. The mean percentage questionnaire score ± SD was 17.5 ± 15.1. Scores were slightly higher for pharmacists with 2 or more pharmacokinetic classes in their formal education (p < 0.02). Conclusions: Understanding the principles of pharmacogenetics will allow pharmacists to appreciate that patients respond differently to certain medications as influenced by genetic variations encoding drug-metabolizing enzyme activity. As a consequence, some patients will have a normal therapeutic response, whereas others may experience drug toxicity or therapeutic inefficacy when given the same dose of a drug. This study determined, albeit with many limitations, that there is likely a need for improved availability of pharmacogenetic continuing education programs.

Publisher

SAGE Publications

Subject

Pharmaceutical Science

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