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Subgroup analysis of a phase 2/3 study of rurioctocog alfa pegol in patients with severe hemophilia A: efficacy and safety in previously treated Korean patients.

ABSTRACT: Background:The efficacy and safety of extended half-life, full-length, pegylated recombinant factor VIII rurioctocog alfa pegol [BAX 855, ADYNOVATE (USA)/ADYNOVI (Europe); Baxalta US Inc., a Takeda company, Lexington, MA, USA] was investigated in previously treated Korean patients with severe hemophilia A (HA). Methods:A post hoc data analysis from the international, multicenter, phase 2/3 PROLONG-ATE study of rurioctocog alfa pegol in patients with severe HA (NCT01736475) determined annualized bleeding rates (ABRs) and rates of adverse events (AEs) in Korean patients treated in this study. Results:All 10 enrolled Korean patients receiving rurioctocog alfa pegol (9 prophylaxis, 1 on-demand) completed the study [median (range) age, 28.0 (12-50) yr; weight, 64.8 (45-90) kg; 8 patients had ?1 target joint at screening]. Median (range) ABR was 1.9 (0.0-14.5) for patients on prophylaxis and 62.2 for the patient receiving on-demand treatment. The hemostatic efficacy of rurioctocog alfa pegol was rated "excellent" or "good" and only single infusions were required per bleeding episode. ABRs improved in most patients compared with prestudy values. No dose adjustments were required for prophylaxis, and the dosing frequency was reduced in 8 patients, compared with their previous prophylaxis regimen. No serious AEs were reported; all 9 nonserious AEs (in 3 patients) were mild in severity and unrelated to the study treatment. Conclusion:This post hoc analysis of a small group of Korean patients with severe HA indicated that rurioctocog alfa pegol was effective, and no serious AEs were observed. For most patients, the dosing frequency was also reduced compared with their previous regimen.

SUBMITTER: You CW

PROVIDER: S-EPMC6779944 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature

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Subgroup analysis of a phase 2/3 study of rurioctocog alfa pegol in patients with severe hemophilia A: efficacy and safety in previously treated Korean patients.

You Chur Woo CW Baek Hee Jo HJ Park Sang Kyu SK Park Young Shil YS Shin Ho-Jin HJ Engl Werner W Tangada Srilatha S

Blood research 20190925 3

<h4>Background</h4>The efficacy and safety of extended half-life, full-length, pegylated recombinant factor VIII rurioctocog alfa pegol [BAX 855, ADYNOVATE (USA)/ADYNOVI (Europe); Baxalta US Inc., a Takeda company, Lexington, MA, USA] was investigated in previously treated Korean patients with severe hemophilia A (HA).<h4>Methods</h4>A post hoc data analysis from the international, multicenter, phase 2/3 PROLONG-ATE study of rurioctocog alfa pegol in patients with severe HA (NCT01736475) determi ...[more]

PMID: 31730687

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Project description:PurposeTo illustrate the benefits of the extended half-life (EHL) recombinant factor VIII product N8-GP (Esperoct®, turoctocog alfa pegol) by describing individual cases of patients with severe hemophilia A treated with N8-GP in the pathfinder clinical trial program.Patients and methodsThis manuscript presents selected patient cases from the pivotal pathfinder clinical trial program, which included a number of clinical studies in adults (pathfinder 2 and 3) and children (pathfinder 5); overall results published previously. Clinical data and outcomes described in this manuscript are more detailed and derived from several interesting patient cases (five adults from pathfinder 2 and two children from pathfinder 5), who received N8-GP as prophylaxis (PPX) for their severe hemophilia A. Three of the five adults described here also underwent multiple major surgeries (for which they moved from pathfinder 2 into pathfinder 3 and later returned to pathfinder 2). New analyses on pediatric joint health from pathfinder 5 are also summarized here. Outcomes assessed included bleeding complications, improvements in quality of life, intraoperative hemostatic response, blood loss during surgery, number of blood transfusions, and annualized bleeding rates. For the pediatric patients, target joint resolution, adverse events, and annualized joint bleeding rate were also assessed, all by the treating physician.ResultsConsiderable improvements in treatment adherence, bleeding rates, and overall physical activity levels were demonstrated in two adult cases from the pathfinder 2 trial. N8-GP demonstrated good or excellent hemostatic coverage in three adult patients undergoing multiple major surgeries. The benefits of N8-GP for joint health and in support of children and adolescents with evolving active lifestyles were reported for several pediatric cases.ConclusionThese patient cases highlight the benefits of EHL products, such as N8-GP, for patients with severe hemophilia A. They include more challenging scenarios relating to improvements in previously poor adherence to PPX, children with active sporting lifestyles, and patients requiring multiple major surgeries.

Dataset Information

Subgroup analysis of a phase 2/3 study of rurioctocog alfa pegol in patients with severe hemophilia A: efficacy and safety in previously treated Korean patients.

Publications

Subgroup analysis of a phase 2/3 study of rurioctocog alfa pegol in patients with severe hemophilia A: efficacy and safety in previously treated Korean patients.

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