Drug intelligence / Profile preview

IgG ATAC

Development stage
Preclinical
Lead developer
Avilar Therapeutics
Modality
PROTACs (E3 ligase recruitment) → Targeted Protein Degraders (TPDs) → Small Molecules, Bivalent/Multivalent Binders → Multivalent & Scaffold-Based Small Molecules → Small Molecules
Administration
Oral
01

Overview

IgG ATAC is an oral small molecule heterobifunctional protein degrader developed by Avilar Therapeutics for the treatment of IgG-driven autoimmune diseases. It is the lead candidate from Avilar's proprietary ATAC (Antibody-Targeted Autologous Cell) platform, which is designed to target and degrade extracellular proteins. The molecule functions by simultaneously binding to circulating Immunoglobulin G (IgG) and the asialoglycoprotein receptor (ASGPR) expressed on the surface of hepatocytes. This dual engagement triggers the endocytosis of the IgG-ATAC complex into the liver cell, where it is trafficked to the lysosome for degradation. By selectively reducing the levels of pathogenic autoantibodies in the blood, IgG ATAC offers a novel therapeutic approach for a variety of autoimmune conditions mediated by IgG, such as myasthenia gravis and CIDP.

Other names
immunoglobulin G antibody-targeted amanitin conjugateIgG-ATACimmunoglobulin G antibody-targeted autologous cell degrader
02

Targets

ASGPR (Asialoglycoprotein Receptor 1)IgG Fc (Immunoglobulin G Fc region)

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