Tags

Type your tag names separated by a space and hit enter

Assessing bleeding rates, related clinical impact and factor utilization in German hemophilia B patients treated with extended half-life rIX-FP compared to prior drug therapy.
Curr Med Res Opin 2019; :1-7CM

Abstract

Objective:

An extended half-life factor IX (FIX) fusion protein linking recombinant FIX with recombinant human albumin (rIX-FP), indicated for the treatment of hemophilia B, was approved by the European Medicines Agency in May 2016. We aimed to compare clinical outcomes and drug utilization in patients who switched from prior FIX therapies to rIX-FP.

Methods:

Anonymized patient chart data were collected from German institutions treating patients with hemophilia B. Patients were included if they had been treated with rIX-FP for ≥8 weeks at the time of data collection. Bleeding rates and FIX consumption were compared between rIX-FP and patients' prior FIX products.

Results:

Data were obtained for 81 male patients treated with rIX-FP, including 59 who received prophylaxis with both their prior drug and rIX-FP (prophylaxis-to-prophylaxis group). Mean factor consumption in this group was 44.2 IU/kg/wk for rIX-FP compared with 82.3 IU/kg/wk for all prior FIX products. In addition, intra-patient analysis of factor consumption showed lower consumption of rIX-FP compared with prior FIX in 56 of 59 patients. Among the patients for whom bleed data were available (n = 42), annualized bleeding rate decreased from a mean (standard deviation) of 2.6 ± 2.9 on prior product to 0.3 ± 0.6 on rIX-FP. The proportion of patients with zero bleeds increased from 24% with prior therapy to 81% with rIX-FP.

Conclusion:

rIX-FP was associated with substantial reductions in bleeding rates and consumption of FIX compared with standard half-life products that require more frequent administration.

Authors+Show Affiliations

Institute of Experimental Haematology and Transfusion Medicine, University Clinic Bonn , Bonn , Germany.CSL Behring , King of Prussia , PA , USA.Adivo Associates , San Francisco , CA , USA.CSL Behring , King of Prussia , PA , USA.Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School , Hannover , Germany.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31469321

Citation

Oldenburg, Johannes, et al. "Assessing Bleeding Rates, Related Clinical Impact and Factor Utilization in German Hemophilia B Patients Treated With Extended Half-life rIX-FP Compared to Prior Drug Therapy." Current Medical Research and Opinion, 2019, pp. 1-7.
Oldenburg J, Yan S, Maro G, et al. Assessing bleeding rates, related clinical impact and factor utilization in German hemophilia B patients treated with extended half-life rIX-FP compared to prior drug therapy. Curr Med Res Opin. 2019.
Oldenburg, J., Yan, S., Maro, G., Krishnarajah, G., & Tiede, A. (2019). Assessing bleeding rates, related clinical impact and factor utilization in German hemophilia B patients treated with extended half-life rIX-FP compared to prior drug therapy. Current Medical Research and Opinion, pp. 1-7. doi:10.1080/03007995.2019.1662675.
Oldenburg J, et al. Assessing Bleeding Rates, Related Clinical Impact and Factor Utilization in German Hemophilia B Patients Treated With Extended Half-life rIX-FP Compared to Prior Drug Therapy. Curr Med Res Opin. 2019 Sep 13;1-7. PubMed PMID: 31469321.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Assessing bleeding rates, related clinical impact and factor utilization in German hemophilia B patients treated with extended half-life rIX-FP compared to prior drug therapy. AU - Oldenburg,Johannes, AU - Yan,Songkai, AU - Maro,Geraldine, AU - Krishnarajah,Girishanthy, AU - Tiede,Andreas, Y1 - 2019/09/13/ PY - 2019/8/31/pubmed PY - 2019/8/31/medline PY - 2019/8/31/entrez KW - Drug utilization KW - factor IX KW - hemophilia B KW - rIX-FP fusion protein KW - treatment outcome SP - 1 EP - 7 JF - Current medical research and opinion JO - Curr Med Res Opin N2 - Objective: An extended half-life factor IX (FIX) fusion protein linking recombinant FIX with recombinant human albumin (rIX-FP), indicated for the treatment of hemophilia B, was approved by the European Medicines Agency in May 2016. We aimed to compare clinical outcomes and drug utilization in patients who switched from prior FIX therapies to rIX-FP. Methods: Anonymized patient chart data were collected from German institutions treating patients with hemophilia B. Patients were included if they had been treated with rIX-FP for ≥8 weeks at the time of data collection. Bleeding rates and FIX consumption were compared between rIX-FP and patients' prior FIX products. Results: Data were obtained for 81 male patients treated with rIX-FP, including 59 who received prophylaxis with both their prior drug and rIX-FP (prophylaxis-to-prophylaxis group). Mean factor consumption in this group was 44.2 IU/kg/wk for rIX-FP compared with 82.3 IU/kg/wk for all prior FIX products. In addition, intra-patient analysis of factor consumption showed lower consumption of rIX-FP compared with prior FIX in 56 of 59 patients. Among the patients for whom bleed data were available (n = 42), annualized bleeding rate decreased from a mean (standard deviation) of 2.6 ± 2.9 on prior product to 0.3 ± 0.6 on rIX-FP. The proportion of patients with zero bleeds increased from 24% with prior therapy to 81% with rIX-FP. Conclusion: rIX-FP was associated with substantial reductions in bleeding rates and consumption of FIX compared with standard half-life products that require more frequent administration. SN - 1473-4877 UR - https://www.unboundmedicine.com/medline/citation/31469321/Assessing_bleeding_rates,_related_clinical_impact_and_factor_utilization_in_German_hemophilia_B_patients_treated_with_extended_half-life_rIX-FP_compared_to_prior_drug_therapy L2 - http://www.tandfonline.com/doi/full/10.1080/03007995.2019.1662675 DB - PRIME DP - Unbound Medicine ER -