ATHN 2: A Longitudinal, Observational Study of Previously Treated Patients (PTPs) Switching Factor Replacement Products

With nearly a dozen new factor replacement products available, many patients are likely to switch to a new product within the next few years. To better understand the effects of switching to any of these new factor products, ATHN is sponsoring ATHN 2, a research study on the effects of switching factor products.

Unlike manufacturer-sponsored studies of individual factor products, ATHN 2 is designed to study all of the new factor products over many years, after they have been approved by the U.S. Food and Drug Administration (FDA). Patients who have a prior history of inhibitors to factors (but are free of an inhibitor now) are eligible to participate.

To learn more, download the ATHN 2 Study Brochure.