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Updated: Aug 8, 2026

Identification of Mediators of T-cell Receptor Signaling via the Screening of Chemical Inhibitor Libraries
Published on: January 22, 2019
Current opinion on inhibitor treatment options
1Department of Pediatrics, University of New Mexico, Albuquerque, NM 87113, USA. PMathew@salud.unm.edu
Managing hemophilia inhibitors is challenging. Activated prothrombin complex concentrate (aPCC) and activated recombinant factor VII (rFVIIa) are used for bleeding, but optimal dosing is difficult due to lack of monitoring assays. Comparative studies are needed.
Area of Science:
- Hematology
- Coagulation Disorders
- Pharmacology
Background:
- Hemophilia inhibitor development complicates bleeding management.
- High-dose factor concentrates are used for low-titer inhibitors.
- Bypassing agents like activated prothrombin complex concentrate (aPCC) and activated recombinant factor VII (rFVIIa) treat acute bleeds in high-titer inhibitor patients.
Purpose of the Study:
- To compare the efficacy and cost-effectiveness of aPCC and rFVIIa for treating joint hemorrhages in hemophilia patients with inhibitors.
- To address the scarcity of comparative data on FEIBA and rFVIIa efficacy.
- To inform the development of future hemostatic agents by considering cost and outcome.
Main Methods:
- Initiation of crossover comparison studies.
- Assessment of efficacy for bleed control.
- Evaluation of cost-effectiveness of therapies.
Main Results:
- Neither FEIBA nor rFVIIa can be monitored with laboratory assays, complicating optimal dosage determination.
- Comparative studies on the efficacy of FEIBA and rFVIIa for bleed control are limited.
- Cost and outcome of therapy are critical factors for future hemostatic agent development.
Conclusions:
- Optimal dosing of bypassing agents like FEIBA and rFVIIa is challenging due to the lack of laboratory monitoring assays.
- Further comparative studies are essential to evaluate the efficacy and cost-effectiveness of different hemostatic agents in hemophilia patients with inhibitors.
- Future hemostatic agent development must consider both therapeutic outcomes and economic factors.
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