Cerebrospinal Fluid and MRI Analyses of Fenebrutinib Treatment in Multiple Sclerosis Reveal Brain Penetration and Early Reduction of New Lesion Activity: Results from the Phase II FENopta study
Bruton’s tyrosine kinase (BTK) is implicated in peripheral and central nervous system inflammation in multiple sclerosis (MS) and is a therapeutic target for relapsing and progressive disease. Fenebrutinib is a potent, highly selective, noncovalent, reversible BTK inhibitor under investigation for MS. The objective of FENopta, a randomised, double-blind, placebo-controlled, Phase 2 trial (NCT05119569), was to evaluate efficacy and safety of fenebrutinib in relapsing MS and evaluate the early impact of fenebrutinib on MRI outcomes and soluble markers of disease activity and progression.