The benefits of a one-time gene therapy were sustained for up to 13 years among men with severe hemophilia B with no new safety concerns emerging, according to newly published results from a clinical trial. The findings, which encompass the longest ever follow-up for a gene therapy study in…
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A single infusion of Hemgenix (etranacogene dezaparvovec-drlb) helped boost levels of factor IX (FIX), the clotting protein missing in hemophilia B, in many patients who already had antibodies against the viral carrier, according to new trial data. The findings suggest the gene therapy may benefit a broader group of…
Transplants of embryonic stem (ES) cells that secrete the human factor VIII (FVIII) may be a promising therapeutic approach for patients with hemophilia A, according to an animal study conducted by researchers at the Nara Medical University School of Medicine in Japan. The study, “Therapeutic approaches for treating hemophilia…
Note: This story was updated March 28, 2024, to clarify the gene therapy delivers the mRNA of the Cas9 enzyme. Intellia Therapeutics is ending its collaborative agreement with Regeneron, which had the two companies working together in developing hemophilia B gene-editing therapies, according to a securities and exchange…
A single dose of the investigational gene therapy BAY 2599023 safely promotes a sustained production of factor VIII (FVIII),  effectively preventing spontaneous bleeds in people with severe hemophilia A, a Phase 1/2 trial shows. Two of the six patients treated to date in this clinical study, both given the…
A single infusion of Beqvez (fidanacogene elaparvovec-dzkt), a now-discontinued gene therapy for hemophilia B, led to sustained production of factor IX (FIX) — the clotting protein missing in people with the condition — for up to six years, reducing bleeding episodes and eliminating the need for routine preventive…
Health Canada has approved fidanacogene elaparvovec, formerly known as SPK-9001 and now marketed under the brand name Beqvez, for adults with moderately severe to severe hemophilia B. Developed by Pfizer, the gene therapy is under review by regulatory agencies in the U.S. and Europe. “Pfizer has…
The Canadian Agency for Drugs and Technologies in Health’s (CADTH) Canadian Drug Expert Committee (CDEC) recommended reimbursement for hemophilia B gene therapy Hemgenix (etranacogene dezaparvovec), according to the therapy’s developer, CSL Behring Canada. Hemgenix in 2023 became the first gene therapy in the country approved for hemophilia…
The first gene therapy for adults with hemophilia B — branded as Hemgenix (etranacogene dezaparvovec) — has been approved by the U.S. Food and Drug Administration (FDA). Meant to be a one-time treatment, Hemgenix is expected to keep bleeding in check in the long term, while also allowing patients…
Understanding hemophilia treatment options if you have inhibitors
Fact-Checked By Lindsey Shapiro, PhD
Hemophilia inhibitors can reduce treatment effectiveness and raise bleeding risks, but several therapies can help maintain control. Understanding your options can support more confident, informed care decisions.