Summary.  Background: Prevention of arthropathy is a major goal of hemophilia treatment. While studies in adults have demonstrated an impact of prophylaxis on the incidence of joint bleeds and patients’ well‐being in terms of improved quality of life (QoL), it is unclear whether or not prophylaxis influences the outcome and perception of well‐ of children with hemophilia. Objective: This randomized controlled study compared the efficacy of prophylaxis with episodic therapy in preventing hemarthroses and image‐proven joint damage in children with severe hemophilia A (factor VIII <1%) over a 10‐year time period. Methods: Forty‐five children with severe hemophilia A, aged 1–7 years (median 4), with negative clinical‐radiologic joint score at entry and at least one bleed during the previous 6 months, were consecutively randomized to prophylaxis with recombinant factor VIII (25 IU kg−1 3 × week) or episodic therapy with ≥25 IU kg−1 every 12–24 h until complete clinical bleeding resolution. Safety, feasibility, direct costs and QoL were also evaluated. Results: Twenty‐one children were assigned to prophylaxis, 19 to episodic treatment. Children on prophylaxis had fewer hemarthroses than children on episodic therapy: 0.20 vs. 0.52 events per patient per month (P < 0.02). Plain‐film radiology showed signs of arthropathy in six patients on prophylaxis (29%) vs. 14 on episodic treatment (74%) (P < 0.05). Prophylaxis was more effective when started early (≤36 months), with patients having fewer joint bleeds (0.12 joint bleeds per patient per month) and no radiologic signs of arthropathy. Conclusion: This randomized trial confirms the efficacy of prophylaxis in preventing bleeds and arthropathy in children with hemophilia, particularly when it is initiated early in life.

The development of inhibitory antibodies to factor VIII is a serious complication of hemophilia. FEIBA (factor VIII inhibitorbypassing activity), an activated prothrombin complex concentrate (aPCC), and NovoSeven, recombinant factor VIIa (rFVIIa), are used as hemostatic bypassing agents in treating patients with inhibitors. The FENOC study was designed to test equivalence of the products in the treatment of ankle, knee, and elbow joint bleeding. A prospective, open-label, randomized, crossover, equivalency design was used. The parameters of interest were the percentage of patients who reported efficacy in response to FEIBA and the percentage that reported efficacy in response to NovoSeven. A difference in these percentages of no more than 15% was determined to be a clinically acceptable magnitude for equivalence of the 2 products. The primary outcome was evaluation 6 hours after treatment. Data for 96 bleeding episodes contributed by 48 participants were analyzed. The criterion for declaring the 2 products equivalent at 6 hours was not met; however, the confidence interval of the difference in percentages of efficacy reported for each product only slightly exceeded the 15% boundary (؊11.4%-15.7%), P ‫؍‬ .059. FEIBA and NovoSeven appear to exhibit a similar effect on joint bleeds, although the efficacy between products is rated differently by a substantial proportion of patients. This trial was registered at www.clinicaltrials.gov as #NCT00166309. (Blood. 2007;109:546-551)

Inhibitors in patients with hemophilia are a rare complication of a rare disease causing pain and disability in patients and impairment to the quality of their lives. Recent advances in treatment have brought improvements, but they have done so by absorbing larger amounts of financial resources. This study involved 52 Italian patients with hemophilia with high-responding inhibitors who were longitudinally observed for 18 months to evaluate concomitantly cost of care and quality of life. Overall, 0.6 bleeding episodes per patient per month were recorded. This frequency of events was lower than that reported in other cohorts of patients with hemophilia who were not taking inhibitors. The average monthly cost of care was, in euros, €18 000 (US $18 000) per patient, mainly because of treatment products. Recombinant activated factor VII, mostly used for orthopedic surgery, represented 50% of the expenses. Quality of life, measured through validated questionnaires, was similar to that of patients with severe hemophilia without inhibitors. In particular, physical quality of life was similar to that in patients with diabetes and on dialysis, whereas mental quality of life was comparable to that in the general population. This study shows that hemophilia complicated by inhibitors, a prototype of rare disease, requires high amounts of resources for management that provides a satisfactory quality of life. (Blood. 2003;