Last week we shared new about Sevenfact, a commercial blood clotting recombinant product made from transgenic rabbits. But that made me think: maybe we should step back and review what types of factor products there are to begin with. There are different kinds of factor concentrates, all with distinct brand names and made by different

Paul Clement Factor from rabbits you say? Yes! On April 1, 2020, The Food and Drug Administration (FDA) granted approval of a new recombinant factor VII (FVII) product—Sevenfact—to France-based LFB Biotechnologies Group.1 In the US and Canada, Sevenfact is sold exclusively by HEMA Biologics, a Louisville, KY-based biopharmaceutical company. Until now, all recombinant factor concentrates