CSL’s HEMGENIX ® (etranacogene dezaparvovec-drlb) provides a new treatment option that reduces the rate of annual bleeds, reduces or eliminates the need for prophylactic therapy and generates elevated and sustained factor IX levels for years after a one-time infusion. With the approval of HEMGENIX, CSL now offers an even more comprehensive portfolio of treatments for people living with hemophilia B, ushering in a new era of treatment options. The FDA approval is supported by results from the ongoing HOPE-B trial, the largest gene therapy trial in hemophilia B to date. Results from the study demonstrated that HEMGENIX allowed patients to produce mean factor IX activity of 39 percent at six months and 36.7 percent at 24 months post infusion.