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EFFECTS ON COGNITION AND FUNCTION ASSESSED BY CDR-SB OF THE ORAL P38Α KINASE INHIBITOR NEFLAMAPIMOD IN PATIENTS WITH MILD-TO-MODERATE DEMENTIA WITH LEWY BODIES (DLB)
Abstract
Aims
Compared to episodic-memory-focused cognitive tests such as the ADAS-COG, the Clinical Dementia Rating sum-of-boxes (CDR-SB), in addition to also evaluating function, is potentially better suited to evaluate the cognitive deficits seen in DLB. However, there is limited information on its utility in that context. The aim of this abstract is to report CDR-SB results in a phase 2 placebo (PBO)-controlled study of neflamapimod (NFMD) in DLB. The initial results of that study, presented previously at another scientific conference, demonstrated that 40mg TID neflamapimod significantly improves, relative to placebo, both cognition (evaluated by Neuropsychological Test Battery designed to assess attention and executive function) and motor function (evaluated by Timed Up and Go Test).
Methods
Mild-to-moderate DLB, including abnormal DaT-scan, receiving cholinesterase-inhibitor therapy. Randomized to 40mg NFMD capsules or matching PBO capsules for 16 weeks; BID (<80kg participants) or TID (≥ 80 kg participants). Treatment effects evaluated by linear-mixed-effects-model for repeated measures, with baseline as a covariate.
Results
Baseline mean(N,SD) CDR-SB score: 5.1(42,2.9) in placebo and 4.9(41,2.1) in NFMD. In PBO, there was a significant increase (worsening; +0.67 points, 95%CI:0.13 to 1.21) in CDR-SB from baseline to week 16. There were significant differences favoring neflamapimod treatment in comparisons of all NFMD vs. all PBO (p=0.023, difference=-0.45, 95%CI:-0.83 to -0.06), 40mg TID vs. all PBO (p=0.007, difference= 0.56, 95%CI:-0.96 to -0.16), and NFMD 40mg TID vs. PBO TID (p=0.005, difference=-0.63, 95%CI:-1.06 to -0.21).
Conclusions
CDR-SB proved useful to demonstrate beneficial effects, relative to placebo, of neflamapimod treatment on cognition and function in patients with mild-to-moderate DLB.