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Medications are the most commonly used clinical intervention and complications associated with their use are one of the most common causes of adverse events in health care. Adverse Drug Reactions (ADR) are a major cause of morbidity and pose a substantial burden on limited health care resources.
Many drugs used to treat children in hospitals are either not licensed for use in children or are prescribed outside the terms of their product license (off-label prescribing). This is mainly due to the lack of clinical trials in this vulnerable population, and both practical difficulties and ethical considerations arising from involving children in clinical research.
Drugs used within the specifications of the product license might be less likely to cause ADR compared to drugs that are either unlicensed or off-label for use in children. Few studies have shown a significant association between pediatric off-label drug use and ADR.
To compare the probability of ADR after a licensed drug prescription versus the probability of ADR after prescribing a drug off-label in children, we are conducting a multi-center prospective observational study in different pediatric hospital wards in France.
The availability of electronic health records made this study feasible. An automatic data extraction from hospital information systems has been implemented. A computer algorithm for determining pediatric drug labelling (i.e. off-label or unlicensed use) using the French summaries of product characteristics available in Thériaque® database has been developed. Detection of ADRs is carried out by health care professionals and research groups using a trigger tool and patients' electronic health records. The causality between ADRs and suspected medications is evaluated using the Naranjo and the French methods by regional pharmacovigilance centers. An independent pharmacovigilance board validates ADR evaluations, assesses both of their severity and avoidability, and indicates therapeutic alternatives to suspected medications.
This is, to our knowledge, the first large multi-center and prospective study in France that evaluates the relationship between adverse drug reactions and unlicensed/ off-label drugs use in hospitalized children. The results of this study will provide more information on the prescription practice and the amplitude, nature and consequences of unlicensed/off-label drug use in hospitalized children. It will also help identify the risk factors of ADR that could be used to implement preventive actions, and guide future research in the field. An indirect benefit is represented by the increase of physicians' awareness in detecting and declaring ADRs and by communicating the results to the health professionals and to the public. This study is funded by ANSM (the French Medicine Agency).
Observational Model: Cohort, Time Perspective: Prospective
Pediatric Clinical Research and Investigation Centre CIC 1407 Inserm-UMR 5558 CNRS Lyon University & Hospices Civils de Lyon
Hospices Civils de Lyon
Published on BioPortfolio: 2016-08-03T06:08:28-0400
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