Antibodies for determining coagulation factor viii activity and assays

By using anti-ELNN antibodies and colorimetric assays, the challenge of measuring the activity of chimeric protein FVIII in patients with von Willebrand disease has been solved, providing accurate monitoring of FVIII activity, reducing the risk of joint bleeding, and improving the accuracy of treatment management.

CN122422346APending Publication Date: 2026-07-17AMUNIX PHARMACEUTICALS INC +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
AMUNIX PHARMACEUTICALS INC
Filing Date
2024-12-18
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies make it difficult to accurately measure the activity level of coagulation factor VIII in patients with von Willebrand disease who have been given chimeric proteins such as enothrombin α. In particular, the level of FVIII is significantly reduced in patients with type 2N and type 3 VWD, leading to complications such as joint bleeding.

Method used

Chimeric proteins were isolated from patient samples using anti-ELNN antibodies or their antigen-binding fragments, and FVIII activity was measured using a colorimetric assay. The measured values ​​were corrected as necessary to provide accurate FVIII activity levels.

Benefits of technology

This technology enables accurate measurement of the activity of chimeric protein FVIII in patients with von Willebrand disease, helping to monitor and manage treatment outcomes and reduce the risk of joint bleeding.

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Abstract

本披露提供了抗ELNN抗体,以及用于测定某些嵌合蛋白的凝血因子VIII(FVIII)活性水平的方法。所提供的方法包括用于确定人类受试者的血液或血浆中的FVIII活性水平的方法,该人类受试者患有血管性血友病(VWD)并且已经向其施用了含有ELNN和 / 或VWF片段的嵌合蛋白,诸如艾诺凝血素α。
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