Clinical Hold on Sigilon Hemophilia Study

 

FDA has placed a clinical hold on a Sigilon Therapeutics Phase 1/2 study of SIG-001 in patients with severe or moderately severe hemophilia A following a reported serious adverse event (SAE). To date, three patients have been dosed with SIG-001, according to the company, and the third patient, who received the highest study dose, developed inhibitors to Factor VIII (FVIII). The patient is responding to medical treatment and his condition continues to improve, it says.

“Among other things, the FDA has requested additional information or data on factors potentially contributing to the development of inhibitors in this patient, such as family history and immune stimulation from a recent vaccination,” Sigilon says. “All three patients enrolled in this study will continue to be followed per study protocol, while the company investigates the SAE.”

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