Today is #WorldHemophiliaDay. #Hemophilia is a rare genetic disease that prevents blood from clotting properly. We’re working with @Regeneron to co-develop potential #hemophilia A & B #CRISPR/Cas9-based treatments. Learn more: https://t.co/Zct1uK2KrP #WHD2021 https://t.co/lSksprV4BS