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KMID : 1142020190540030198
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Blood Research
2019 Volume.54 No. 3 p.198 ~ p.203
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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
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You Chur-Woo
Baek Hee-Jo
Park Sang-Kyu
Park Young-Shil
Shin Ho-Jin
Engl Werner
Tangada Srilatha
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Abstract
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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.
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KEYWORD
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Hemophilia A, Factor VIII, Rurioctocog alfa pegol, BAX 855, Post hoc analysis
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