CSL Behring, the biopharmaceutical company behind the hemophilia B gene therapy HEMGENIX ® (etranacogene dezaparvovec-drlb), provided an update to the bleeding disorders community regarding the availability of the treatment. In a letter to the hemophilia B community, the company stated that they have “reestablished limited supply in April 2026,” and that they remain committed to actively managing the existing supply.

The company announced a temporary global stockout of the therapy in March of 2026.

The full letter can be read here.