Nurix Sees STAT6 IND Filing, BTK Phase 1 Data and Superior IRAK4 Skin Penetration

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Nurix Therapeutics outlined progress on its immunology pipeline, highlighting STAT6 degrader NX-3911 entering IND-enabling studies with Sanofi and BTK degrader bexobrutideg Phase 1 data planned this year. The company also noted its IRAK4 degrader shows superior skin penetration and no QT issues versus competitors.

1. Immunology Pipeline Advances

Nurix executives presented the company’s immunology and inflammation pipeline centered on STAT6, BTK and IRAK4 degraders. They emphasized that degraders remove full target proteins, tackling both enzymatic and non-enzymatic scaffolding functions, with assays showing scaffolding-driven signaling can account for up to half of pathway activity.

2. STAT6 Degrader NX-3911 Progress

In partnership with Sanofi, NX-3911 has entered IND-enabling studies with an IND expected this year. High-resolution proteomics revealed exclusive STAT6 degradation at clinically relevant doses, while oral dosing in multiple species, including primates, achieved rapid, potent and complete STAT6 removal, suppressing type 2 inflammatory markers below knockout levels.

3. BTK Degrader Bexobrutideg Phase 1 Plans

Nurix is advancing bexobrutideg in tablet form through Phase 1 multiple ascending dose studies targeting autoimmune, dermatology and neurology indications, with Phase 1 data due later this year. The program builds on oncology findings that BTK scaffolding activity can drive disease even when kinase function is inhibited.

4. IRAK4 Degrader Differentiation

Developed in collaboration with Gilead, Nurix’s IRAK4 degrader demonstrated superior tissue penetration in skin and no observed QT prolongation in preclinical studies. By degrading the entire kinase, the compound aims to deliver deeper inhibition of both catalytic and scaffolding signaling compared to traditional inhibitors.

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