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Geron Plans to Discontinue Late-Stage Rytelo Trial After Efficacy Concerns
Geron shares fell more than 20% Wednesday as the company moved to end the study.

The planned discontinuation applies to a late-stage study of imetelstat, Geron’s lead asset, which the company markets as Rytelo. The move followed concerns about the drug’s efficacy. Geron shares fell more than 20% Wednesday, Oct. 28.