CSF1R inhibitors pexidartinib and sotuletinib induce rapid glial ablation despite their limited brain penetrability
Olaf van Tellingen, Zoey J Tolboom, Yoran M Leter, Efi Tsouri, Artur M Burylo, Caroline L. Van Heijningen, Sanne B. Schagen, Mark C. de Gooijer, Laura E. Kuil
This study shows that high-dose CSF1R inhibitors pexidartinib and sotuletinib rapidly deplete microglia despite limited brain penetration, with significant off-target effects on other immune and tissue cells.
bioRxiv · Oct 11, 2025 · PreprintPharmacology & Toxicology