Ziopharm Oncology (ZIOP -3.4%) slips on a downgrade to Hold at Jefferies morning. The firm also cut its price target on the stock to $4 from $7 a share, citing increased clinical risks after the firm met with oncology experts to discuss ZIOP's palifosfamide. The discussions indicate a sub-50% probability the drug will meet its OS endpoint, which is necessary for FDA approval.
Ziopharm Oncology (ZIOP -3.4%) slips on a downgrade to Hold at Jefferies morning. The firm also...
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