CervoMed Publishes Positive Results from AscenD-LB Phase 2a Trial in Peer-Reviewed Journal that Supports the Therapeutic Potential of Neflamapimod in Dementia with Lewy Bodies
12 Febbraio 2024 - 2:00PM
CervoMed Inc. (NASDAQ: CRVO), a clinical stage company focused on
developing treatments for degenerative diseases of the brain,
announced that data from the AscenD-LB Phase 2a trial evaluating
treatment with neflamapimod in patients with dementia with Lewy
bodies (DLB) were published online in the Journal of Prevention of
Alzheimer’s Disease (JPAD). The published manuscript titled “Phase
2a learnings incorporated into RewinD-LB, a Phase 2b clinical trial
of neflamapimod in dementia with Lewy bodies,” is available online.
“The publication of the EEG and MRI results round out the Phase
2a data that supports the advancement of neflamapimod into
late-stage development as a treatment for DLB,” said John Alam, MD,
Chief Executive Officer of CervoMed. “While there are currently no
approved treatment options for patients with DLB, we are encouraged
by the positive data generated to date and look forward to building
on the Phase 2a results with our ongoing RewinD-LB Phase 2b trial,
which is expected to provide a clear path to market in this high
value indication. Our RewinD-LB trial, which we believe is derisked
through the incorporation of learnings outlined in the publication,
is highly powered and designed to stratify patients most likely to
benefit from neflamapimod. RewinD-LB remains on track to complete
enrollment in the first half of 2024 and we expect to report
primary efficacy results in the second half of 2024.”
Results published for the first time in the JPAD manuscript are
as follows:
- An integrated summary of the effects
of neflamapimod 40mg three-times-a-day (TID) compared to placebo in
the AscenD-LB Phase 2a clinical trial across all endpoints in (1)
the overall patient population that contains a mixed population of
patients with DLB with evidence of AD (i.e., with pre-treatment
plasma ptau181 level above the pre-defined cutoff for AD
co-pathology) and patients with pure DLB (i.e., with pre-treatment
plasma ptau181 below cutoff); and (2) in the pure DLB patient
population alone. As evident in the table, compared to the response
in the overall patient population, the magnitude of the
neflamapimod treatment effect vs. placebo is substantially higher
in the pure DLB patient population. In addition, the pure DLB
patients show significant improvement on working memory, assessed
by the International Shopping List Test (ISLT) recognition, that is
not evident in the overall patient population.
|
Overall Study Population |
Patients With Pure DLB (Plasma ptau181 <
cutoff) |
N= NFMD TID, Placebo |
Difference1(95% CI) |
p-value |
Cohen’s dEffect size |
N= NFMD TID, Placebo |
Difference1(95% CI) |
p-value |
Cohen’s dEffect size |
NTB |
19,37 |
+0.17(0.00,0.35) |
0.049 |
0.47 |
11,19 |
+0.21(-0.07,0.49) |
0.13 |
0.56 |
Attention |
19,36 |
+0.28(0.04,0.51) |
0.023 |
0.41 |
11,18 |
+0.42(0.07,0.78) |
0.023 |
0.78 |
CDR-SB |
20,38 |
-0.56(-0.96, -0.16) |
0.007 |
0.31 |
11,22 |
-0.60(-1.04, -0.06) |
0.031 |
0.74 |
TUG |
20,38 |
-1.4(-2.6, -0.2) |
0.024 |
0.50 |
11,20 |
-3.1(-4.7, -1.6) |
<0.001 |
0.74 |
ISLT |
20,42 |
+0.32(-0.48,1.12) |
NS |
0.15 |
11,22 |
+2.1(0.0,4.2) |
0.053 |
0.55 |
ISLT- RECOGNITION |
19,39 |
+0.47(-0.17,1.11) |
0.15 |
0.17 |
10,21 |
+1.4(0.02,2.5) |
0.024 |
1.0 |
Table: AscenD-LB Results in Neflamapimod 40mg TID, in
Overall Patient Population and in Pure DLB Patients 1
Difference between neflamapimod 40mg TID and placebo from mixed
model for repeated measures (MMRM) analysis. Improvement reflected
by negative sign for CDR-SB and TUG and positive sign for other
measures. Abbreviations: NFMD – neflamapimod; NTB —
Neuropsychological Test Battery; CDR-SB — Clinical Dementia Rating
Sum of Boxes; TUG — Time Up and Go test; ISLT — International
Shopping List Test; RECOG —Recognition
- EEG results from the AscenD-LB Phase
2a trial, which demonstrated that neflamapimod 40mg TID treatment
led to improvement (p=0.01 vs. placebo TID) in beta functional
connectivity assessed by EEG. Deficits in beta band functional
connectivity may be a key differentiator between DLB and
Alzheimer’s disease (AD).
- In a prior Phase 2a study in AD,
neflamapimod treatment led to an increased volume and functional
connectivity of the basal forebrain by MRI. Specifically, the
analysis demonstrated that the volume of the nucleus basalis of
meynert (NbM, the major cholinergic neuronal cluster in the basal
forebrain) was higher at the end of 12 weeks neflamapimod treatment
(EOT, mean 3.1% higher vs. baseline, p=0.03). Treatment with
neflamapimod was also associated with higher functional dynamic
connectivity between the NbM and deep grey matter (DGM) at EOT
(mean 11% higher vs. baseline, p=0.04).
Key learnings from AscenD-LB have been incorporated into the
ongoing RewinD-LB Phase 2b trial of neflamapimod, including the use
of a single dose regimen of neflamapimod 40mg TID, enrolling
patients with pure DLB and selecting CDR-SB as the primary
endpoint. To further evaluate potential effects on the underlying
disease process, structural and functional MRI will be evaluated in
a 40-patient subgroup to assess treatment effects on atrophy of the
basal forebrain, as well its functional connectivity.
About the RewinD-LB Phase 2b Study in Dementia with Lewy
BodiesThe Phase 2b study, named RewinD-LB, is a
randomized, 16-week double-blind, placebo-controlled clinical trial
evaluating oral neflamapimod (40mg three times per day) in up to
160 patients with prodromal dementia with Lewy bodies (DLB) or mild
dementia due to DLB. Patients with Alzheimer's disease-related
co-pathology, assessed by a blood biomarker (plasma ptau181), will
be excluded. Patients completing the 16-week placebo-controlled
study period will be able to continue in the study while receiving
open label neflamapimod treatment for an additional 32 weeks. The
primary endpoint in the study is change in CDR-SB, and secondary
endpoints include the TUG test, a cognitive test battery, and the
Clinician’s Global Impression of Change (CGIC). The study includes
41 sites (30 in the United States, 8 in the United Kingdom, 3 in
the Netherlands), all of which have been initiated. The RewinD-LB
study is funded by a $21 million grant from the National Institutes
of Health's National Institute on Aging (NIA), which will be
disbursed over the course of the study as costs are incurred. More
information, including information on active clinical trial sites,
on the RewinD-LB study is available at clinicaltrials.gov.
About CervoMedCervoMed Inc. is a clinical-stage
company focused on developing treatments for age-related neurologic
disorders. The company is currently developing neflamapimod, an
investigational orally administered small molecule brain penetrant
that inhibits p38MAP kinase alpha (p38a). Neflamapimod has the
potential to treat synaptic dysfunction, the reversible aspect of
the underlying neurodegenerative processes that cause disease in
dementia with Lewy bodies (DLB) and certain other major
neurological disorders. Neflamapimod is currently being evaluated
in a Phase 2b study in patients with DLB.
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Investor Contact: PJ KelleherLifeSci
AdvisorsInvestors@cervomed.com617-430-7579
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