Requiring larger preapproval clinical trials could be a cost-effective method of reducing post-approval injuries and deaths caused by new medications, according to a study published today on the Health Affairs web site.
Drug safety has been a much-discussed topic recently, but most of the attention has focused on strengthening postmarketing surveillance of prescription drugs. In their paper, researchers from Duke University point out the potential for strategies at the preapproval stage--before the Food and Drug Administration has cleared the drug--to detect adverse events caused by new medications, known as adverse drug events (ADEs).
The model put forward by the researchers examines how increasing the size of a clinical trial affects the odds of detecting an ADE. In general, the researchers say, the effect of increasing the number of patients in the trial depends on the “background” frequency of the ADE in the general population and the increased odds of encountering the ADE among those taking the drug (the “odds ratio”).
When they plugged in the cost of running a larger clinical trial, they found that increasing the size of a preapproval trial from 2,000 to 4,000 patients per treatment arm, for example, could be a cost-effective method of avoiding the ADEs. The incremental cost was approximately $27,100 per life-year saved. Read the report.