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Dosing regimens for oral complement factor D inhibitors

An oral agent and pharmaceutical technology, applied in the field of oral administration of complement factor D inhibitors, capable of solving problems such as destruction

Pending Publication Date: 2022-04-08
BIOCRYST PHARM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The complement proteins then create holes, or pores, in the invading organism, leading to its destruction

Method used

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  • Dosing regimens for oral complement factor D inhibitors
  • Dosing regimens for oral complement factor D inhibitors
  • Dosing regimens for oral complement factor D inhibitors

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Embodiment

[0149] introduction:

[0150] Paroxysmal nocturnal hemoglobinuria (PNH) is a rare, life-threatening disorder characterized by hemolytic anemia, thrombosis, and impaired bone marrow function. Uncontrolled activity of the alternative pathway (AP) of complement leads to intravascular hemolysis triggered by membrane attack complex (C5b-9) formation in PNH patients. Terminal complement inhibition by IV administration of eculizumab or ravolizumab reduces intravascular hemolysis and is the standard of care in PNH. However, up to a third of eculizumab-treated patients remain transfusion dependent due to persistent AP activation and extravascular hemolysis mediated by C3 (Kelly RJ et al, Blood 2011;117(25): 6786-6792). The compounds of the present invention are novel, potent, selective and orally bioavailable small molecule inhibitors of human complement factor D. In preclinical in vitro studies, at low nanomolar drug concentrations, the compounds of the present invention inhibit AP...

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Abstract

Compounds and pharmaceutically acceptable salts and prodrugs thereof are disclosed, which are inhibitors of the complement system. Also provided are oral dosage forms comprising such compounds, salts, or prodrugs. Also disclosed are methods of using the compounds, salts and prodrugs and oral dosage forms thereof to treat or prevent diseases or conditions characterized by aberrant complement system activity (e.g., paroxysmal sleep hemoglobinuria).

Description

[0001] related application [0002] This application claims U.S. Provisional Patent Application No. 62 / 881,225, filed July 31, 2019; U.S. Provisional Patent Application No. 62 / 926,175, filed October 25, 2019; and U.S. Provisional Patent Application No. 62 / 926,175, filed May 5, 2020 Priority interest under No. 63 / 020,239. Background technique [0003] The complement system is a branch of an organism's immune system that enhances the ability of antibodies and phagocytes to destroy and remove foreign particles (eg, pathogens) from an organism. The complement system comprises a collection of plasma proteins that work together to attack the extracellular forms of pathogens and induce a cascade of inflammatory responses that help fight infection. Complement activation can occur through several pathways. For example, complement activation can occur spontaneously in response to certain pathogens, or through the binding of antibodies to the pathogen. When complement proteins are act...

Claims

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Application Information

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IPC IPC(8): A61K31/343C07D307/80C07D405/10A61K9/20A61K9/48
CPCA61K31/343C07D307/80A61K9/0053C07D307/79C07D307/81C07D405/04C07D487/04C07D405/06C07D413/04C07D405/12C07D409/04C07D407/04C07D491/048A61K31/381A61K31/443A61K31/4436A61K31/4025A61K31/4725A61K31/4355A61K31/53A61K45/06A61P9/00A61P13/12A61P25/00A61P25/28A61P37/00A61P43/00A61K31/4525A61K31/5377A61K31/4178A61K31/423A61K31/519A61K31/416A61K9/4858A61K9/2018A61P7/06A61P37/06
Inventor Y·S·巴布W·P·谢里丹
Owner BIOCRYST PHARM INC
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