Spero soars as UTI drug trial with partner GSK stops after early success
ReutersMay 28, 2025 11:50 AM
Shares of drug developer Spero Therapeutics SPRO.O jumps 241.6% to $2.33 premarket
Co and partner GSK GSK.L to stop trial of experimental urinary tract drug tebipenem HBr due to early success after it met the main goal of a late-stage study
The decision comes after a recommendation from an independent committee that completed a pre-specified interim analysis of data from 1,690 patients enrolled in the trial
In the trial, the drug showed it was at least as good as an existing intravenous treatment in hospitalized adult patients
As of last close, SPRO stock down 33.8% YTD
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