The U.S. Food and Drug Administration today approved Kcentra (Prothrombin Complex Concentrate, Human) for the urgent reversal of vitamin K antagonist (VKA) anticoagulation in adults with acute major bleeding. Plasma is the only other product approved for this use in the United States.
Patients receiving chronic anticoagulation therapy with warfarin and other VKA anticoagulants to prevent blood clotting in conditions such as atrial fibrillation or the presence of an artificial heart valve sometimes develop acute bleeding. Like plasma, Kcentra is used in conjunction with the administration of vitamin K to reverse the anticoagulation effect and stop the bleeding. Unlike plasma, Kcentra does not require blood group typing or thawing, so it can be administered more quickly than frozen plasma.
"The FDA's approval of this new product gives physicians a choice when deciding how to treat patients requiring urgent reversal of VKA anticoagulation," said Karen Midthun, M.D., director, Center for Biologics Evaluation and Research, FDA. "Kcentra is administered in a significantly lower volume than plasma at recommended doses, providing an alternative for those patients who may not tolerate the volume of plasma required to reverse VKA anticoagulation."
Kcentra is associated with the occurrence of blood clots when used as indicated, and carries a boxed warning regarding the risk of blood clots. The warning also explains that patients receiving Kcentra should be monitored for signs and symptoms of thromboembolic events, as both fatal and non-fatal arterial and venous thromboembolic complications have been reported in clinical trials and post marketing surveillance.
Kcentra is made from the pooled plasma of healthy donors. It is processed in a way to minimize the risk of transmitting viral and other diseases. The FDA approval of Kcentra was based on a study of 216 patients who had been receiving VKA anticoagulation and who had acute major bleeding along with a clotting test value indicative of anticoagulant use. Kcentra was demonstrated to be similar to plasma in terms of the ability to stop acute major bleeding.
The drug is manufactured by CSL Behring, Marburg, Germany.