Although the study failed to show improvement in any clinical outcome measure despite significant reductions in the blood eosinophil count at both doses of active drug, a 50% reduction in severe exacerbations was observed during the follow-up period that failed to reach statistical significance ( p =0.06) as the study was not powered for this outcome.
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Patient profiles and clinical utility of mepolizumab in severe eosinophilic asthma.
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approached significancep =0.06
Despite this, it is notable that the study reported a trend toward reduction in severe exacerbation frequency that approached significance ( p =0.06), supporting an effect of treatment on this clinical outcome for the subgroup of subjects that were likely responders.