
The clinical hold affects the remaining eight patients in the company’s Phase 2 study in essential thrombocythemia (ET) or polycythemia vera (PV) and the remaining two patients in the company’s Phase 2 study in multiple myeloma. In addition, the company’s planned Phase 2 clinical trial in myelofibrosis will likely be delayed due to the clinical hold. It is possible that other studies using imetelstat, such as ongoing investigator-sponsored trials, may also be placed on clinical hold by the FDA.
Geron has not yet received written notice of its clinical hold from the FDA, but based on the verbal communication yesterday afternoon, the FDA indicated that the clinical hold is due to the occurrence of persistent low-grade liver function test (LFT) abnormalities observed in the Phase 2 study of imetelstat in ET/PV patients and the potential risk of chronic liver injury following long-term exposure to imetelstat. The FDA expressed concern about whether these LFT abnormalities are reversible. Geron plans to work diligently with the FDA to seek the release of the clinical hold.
Date: March 12, 2014
Source: Geron Corp.
Filed Under: Drug Discovery