NX-2127 (ETX2514 Triethylamine) is an orally active BTK inhibitor that induces degradation of mutant BTKC481S in cells.NX-2127 has potent antiproliferative activity and inhibits the proliferation of BTKC481S mutant TMD8 cells.NX-2127 potently catalyzes the degradation of Ikaros (IKZF1) and Aiolos (IKZF3) at 25 nM and 54 nM, respectively. NX-2127 is associated with the immune system, stimulating T cell activation and increasing IL-2 production in primary human T cells.

Fenebrutinib (GDC-0853) is a selective and noncovalent Btk inhibitor (Ki: 0.91 nM).

ARQ-531 is a potent and orally active BTK inhibitor with potential antineoplastic activity, with IC50s of 0.85 nM and 0.39 nM for WT-BTK and C481S-BTK, respectively.

MT-802 is an effective BTK degrader based on PROTAC technology (DC50: 1 nM). MT-802 has the potential to treat C481S mutant chronic lymphocytic leukemia (CLL).

RN486 is an effective and specific BTK inhibitor (IC50: 4 nM).