Peter Doshi

In the fall of 2009, at the height of fears over swine flu, our research group discovered that a majority of clinical trial data for the anti-influenza drug Tamiflu ― data that proved, according to its manufacturer, that the drug reduced the risk of hospitalization, serious complications and transmission ― were missing, unpublished and inaccessible to the research community. From what we could tell from the limited clinical data that had been published in medical journals, the country’s most widely used and heavily stockpiled influenza drug appeared no more effective than aspirin.

After we published this finding in the British Medical Journal at the end of that year, Tamiflu’s manufacturer, Roche, announced that it would release internal reports to back up its claims that the drug was effective in reducing the complications of influenza. Roche promised access to data from 10 clinical trials, 8 of which had not been published a decade after completion, representing more than 4,000 patients from every continent except Antarctica. Independent verification of the data seemed imminent. But more than two years later, and despite repeated requests, we have yet to receive even a single full trial report. Instead, the manufacturer released portions of the reports, most likely a very small percentage of the total pages. (One of us, Tom Jefferson, has been retained as an expert witness in a lawsuit relating to some of these issues.)

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