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    Contribution of industry funded post-marketing studies to drug safety: survey of notifications submitted to regulatory agencies

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    Author
    Spelsberg, Angela
    Prugger, Christof
    Doshi, Peter
    Ostrowski, Kerstin
    Witte, Thomas
    Hüsgen, Dieter
    Keil, Ulrich
    Date
    2017-02-07
    Publisher
    BMJ Publishing Group
    Type
    Article
    
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    See at
    http://bmj.com/cgi/content/full/bmj.j337?ijkey=52HF4tZodoyqFzn&keytype=ref
    Abstract
    Objectives: To investigate the practice of post-marketing studies in Germany during a three year period and to evaluate whether these trials meet the aims specified in the German Medicinal Products Act. Design: Survey of notifications submitted to German regulatory agencies before post-marketing studies were carried out, 2008-10. Setting: Notifications obtained through freedom of information requests to the three authorities responsible for registering post-marketing studies in Germany. Main outcome measures: Descriptive statistics of post-marketing studies, including the products under study, intended number of patients, intended number of participating physicians, proposed remunerations, study plan and protocol, and availability of associated scientific publications and reports on adverse drug reactions. Results: Information was obtained from 558 studies, with a median of 600 (mean 2331, range 2-75 000) patients and 63 (270, 0-7000) participating physicians per study. The median remuneration to physicians per patient was €200 (€441, €0-€7280) (£170, £0-£6200; $215, $0-$7820), with a total remuneration cost of more than €217m for 558 studies registered over the three year period. The median remuneration per participating physician per study was €2000 (mean €19 424), ranging from €0 to €2 080 000. There was a broad range of drugs and non-drug products, of which only a third represented recently approved drugs. In many notifications, data, information, and results were, by contract, strictly confidential and the sole property of the respective sponsor. No single adverse drug reaction report could be identified from any of the 558 post-marketing studies. Less than 1% of studies could be verified as published in scientific journals. Conclusions: Post-marketing studies are not improving drug safety surveillance. Sample sizes are generally too small to allow the detection of rare adverse drug reactions, and many participating physicians are strictly obliged to maintain confidentiality towards the sponsor. High remuneration and strict confidentiality clauses in these studies could influence the physicians’ reporting behaviours of adverse drug reactions.
    Citation
    Spelsberg, A., Prugger, C., Doshi, P., Otrowski, K., Witte, T., Hüsgen, D. & Keil, U. (2017). Contribution of industry funded post-marketing studies to drug safety: survey of notifications submitted to regulatory agencies. BMJ 2017;356:j337. DOI: doi.org/10.1136/bmj.j337
    Keyword
    drug safety studies
    private industry
    efficacy
    Product Surveillance, Postmarketing
    Germany
    Identifier to cite or link to this item
    http://hdl.handle.net/10713/6620
    ae974a485f413a2113503eed53cd6c53
    10.1136/bmj.j337
    Scopus Count
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    Dr. Peter Doshi

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