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AstraZeneca Reports P-III (NATRON) Trial Data on Fasenra (Benralizumab) to Treat Hypereosinophilic Syndrome (HES)

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  • AstraZeneca has reported P-III (NATRON) trial data assessing Fasenra (30mg, SC, Q4W) vs PBO, both in addition to background HES therapy in 133 HES pts for 24wks.
  • Trial met its 1EP of delayed time to first HES worsening or flare & reduced the risk of HES worsening/flare by 65%
  • Trial met all 2EPs, showing fewer flares or withdrawals (22.4% vs 45.5%), a 66% reduction in annualized rate of HES flares (0.41 vs 1.23/year), delayed time to first hematologic relapse, & sustained PROMIS Fatigue improvement from Wk. 4 to 24; data to be presented at ASH & ACAAI’25

Ref: AstraZeneca | Image: AstraZeneca | Press Release

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