Marisa Wexler, MS, senior science writer —

One-time treatment with the investigational gene therapy SPK-8011 led to sustained low bleed rates for people with hemophilia A in a Phase 1/2 clinical trial. That’s according to data of up to 5 years of follow-up presented by the therapy’s developer, Spark Therapeutics, at the annual meeting of…

A committee of the European Medicines Agency (EMA) has issued a positive opinion recommending the one-time gene therapy etranacogene dezaparvovec be granted conditional marketing authorization to treat appropriate adults with hemophilia B. The recommendation from the EMA’s Committee for Medicinal Products for Human Use (CHMP) will now be…

The U.S. Food and Drug Administration (FDA) has scheduled its inspection of the facility in California where BioMarin Pharmaceutical would produce the gene therapy Roctavian (valoctocogene roxaparvovec) if it’s approved. The agency is reviewing a biologics license application (BLA) from BioMarin that seeks approval of Roctavian to…

Two new gene therapy vectors designed for liver diseases show promising effects in a mouse model of hemophilia B, according to a recent study. The study, “Adeno-associated virus serotype 2 capsid variants for improved liver-directed gene therapy,” was published in Hepatology. Hemophilia B is caused…

The U.S. Food and Drug Administration (FDA) has accepted a resubmitted biologics license application (BLA) from BioMarin Pharmaceutical requesting approval of the gene therapy Roctavian (valoctocogene roxaparvovec) to treat adults with severe hemophilia A. The FDA is now expected to decide by the end of March 2023 on whether…

The U.S. Food and Drug Administration (FDA) has cleared the biotechnology company TeraImmune to launch a Phase 1/2a clinical trial testing TI-168, its regulatory T-cell therapy designed to eliminate inhibitors in people with hemophilia A. The upcoming trial is expected to enroll up to 18 people with congenital…

Men with moderate-to-severe hemophilia A are again being enrolled in the Phase 3 AFFINE trial, which is testing the safety and effectiveness of SB-525 (giroctocogene fitelparvovec), an experimental gene therapy being developed by Pfizer and Sangamo Therapeutics. Pfizer, the study’s sponsor, had placed a voluntary pause…

Hemophilia A patients who develop inhibitors — neutralizing antibodies made by immune cells against clotting factors — have more expression, or activity, of genes involved in activating the immune system, a small study reports. “The results of our study reveal that there is an upregulation of genes involved with…

Prophylactic, or preventive, treatment with an experimental replacement therapy called TQG202 safely maintained a low bleeding rate in people with severe hemophilia A. That’s according to new data from a Phase 3 clinical trial reported in a recent study, which showed TQG202 worked to control bleeds in testing against…

The U.S. Food and Drug Administration (FDA) has granted priority review for the approval of efanesoctocog alfa, with a decision on the potentially longer-lasting hemophilia A treatment due early next year. The regulatory agency accepted an application from developers Sobi and Sanofi requesting approval of the…