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A new asthma treatment that could be administered just once every six months has succeeded in two Phase 3 trials, developer GlaxoSmithKline announced Tuesday.

The drug, depemokimab, is designed to treat asthma by targeting a protein called interleukin-5, or IL-5. The protein is linked to the type of inflammation found in most severe asthma cases, according to the pharma company.

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Depemokimab hit its primary endpoints in the trials, reducing asthma attacks over a year’s time frame. The company didn’t disclose exact details from the SWIFT-1 and SWIFT-2 trials.

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