Joana Carvalho, PhD,  managing science editor—

As a long-term preventive treatment, fitusiran leads to sustained reductions in bleed frequency in people with moderate-to-severe hemophilia A or B regardless of inhibitor status, early results from an extension study show. The findings were presented at the recent World Federation of Hemophilia Virtual Summit and…

Up to 14 months after a one-time infusion of SB-525, an investigational gene therapy, durable increases in the activity of clotting factor VIII (FVIII) are continuing in all five severe hemophilia A patients treated at the highest dose in the Alta Phase 1/2 trial. None of these…

Despite the COVID-19 pandemic, Catalyst Biosciences has successfully completed a Phase 1 trial of marzeptacog alfa activated (MarzAA), with results supporting the treatment as an on-demand option for bleeding episodes in people with hemophilia A or B. The study, MAA-102 (NCT04072237), was designed to assess…

Infection by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the coronavirus causing COVID-19, can induce the onset of acquired hemophilia A (AHA), a case report has found. As such, blood coagulation should be monitored closely in patients hospitalized for COVID-19, scientists said. The study, “…

The U.S. Food and Drug Administration (FDA) has approved Expression Therapeutics‘ request to open a Phase 1 trial of ET3, an investigational gene therapy for people with hemophilia A. The decision followed a review of the company’s investigational new drug application (IND) requesting clearance of ET3…

Long-term treatment with Rebinyn (nonacog beta pegol, or N9-GP) is safe and effective at preventing and treating spontaneous bleeds in previously treated children, 12 or younger, with severe hemophilia B, five-year data from a Phase 3 trial show. The findings were reported in a study, “…

A single dose of the experimental gene therapy AMT-180 continues to be well-tolerated and to enhance blood clotting activity independent of factor VIII levels in mouse and primate models of hemophilia A, a study shows. Titled, “Human Dose Prediction of a Novel Factor IX Variant Gene Therapy…

Despite the COVID-19 pandemic, BioMarin Pharmaceutical‘s application to the U.S. Food and Drug Administration (FDA) seeking approval of valoctocogene roxaparvovec, an experimental gene therapy for adults with severe hemophilia A, remains on track. During a conference call, the company also said that if approved, the…

The risk of spontaneous bleeding episodes in patients with severe hemophilia A receiving preventive treatment changes over time and can be influenced by treatment history and other patient-related factors, a study has found. As such, the choice of an individual preventive — or prophylactic — regimen should take…

After handing over the development of the gene therapy candidate SB-525 to Pfizer, Sangamo Therapeutics has now concluded its collaboration agreement with Biogen to advance and market gene therapies for Alzheimer’s and Parkinson’s diseases, and other neuromuscular and other neurological disorders. Among other goals, the…