Evidence map›Paper›PMID 34044875›Full record

Trial reportAlzheimer's research & therapy2021

A phase 2 double-blind placebo-controlled 24-week treatment clinical study of the p38 alpha kinase inhibitor neflamapimod in mild Alzheimer's disease.

Niels D Prins, John E Harrison, Hui-May Chu, Kelly Blackburn, John J Alam, Philip Scheltens, REVERSE-SD Study Investigators

Registry-linked trialOpen access · goldAbstract readClinical Trial, Phase IIMulticenter StudyRandomized Controlled Trial
In one paragraph

Trial report in Alzheimer's research & therapy, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03402659 (A Double-Blind, Placebo-Controlled Proof-of-Concept Study of a Selective p38 MAP Kinase Alpha Inhibitor, Neflamapimod, Administered for 24 Weeks in Subjects With Mild Alzheimer's Disease), which is not on this map. Cited by 61 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
61citing papers in PubMed, 1 pooled it
8.4field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT03402659 phase2completednot on this map

A Double-Blind, Placebo-Controlled Proof-of-Concept Study of a Selective p38 MAP Kinase Alpha Inhibitor, Neflamapimod, Administered for 24 Weeks in Subjects With Mild Alzheimer's Disease

TypeinterventionalSponsorEIP Pharma IncRan2017 to 2019Enrolled161ConditionsAlzheimer DiseaseArmsneflamapimod, placebo
3 · Its place in the literature

Who cites it

61 citing papers in PubMed, 1 synthesis or guideline pooled it, 103 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
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  5. Article
  6. Article
  7. Review
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  13. Advances in the treatment of Alzheimer's disease.Frontiers in pharmacology · 2026
    Review
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  15. Article
  16. Review
  17. Beyond Neuroinflammation: Microglia at the Crossroads of Amyloid, Tau, and Neurodegeneration in Alzheimer's Disease.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2025
    Review
  18. Neuroprotection in Parkinson Disease.Neurology and therapy · 2025
    Review
  19. Review
  20. Review

1 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 2 institutions in 2 countries.

Niels D PrinsAlzheimer Center, Department of Neurology, Amsterdam UMC, Amsterdam, The Netherlands. n.prins@brainresearchcenter.nl.ORCID 0000-0002-6297-7592
John E HarrisonAlzheimer Center, Department of Neurology, Amsterdam UMC, Amsterdam, The Netherlands.
Hui-May ChuAnoixis Corporation, Natick, MA, USA.
Kelly BlackburnEIP Pharma, Inc., Boston, MA, USA.
John J AlamEIP Pharma, Inc., Boston, MA, USA.
Philip ScheltensAlzheimer Center, Department of Neurology, Amsterdam UMC, Amsterdam, The Netherlands.
REVERSE-SD Study Investigators
Amsterdam Neuroscience · NLKing's College London · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn preclinical studies, p38⍺ kinase is implicated in Alzheimer's disease (AD) pathogenesis. In animal models, it mediates impaired synaptic dysfunction in the hippocampus, causing memory deficits, and is involved in amyloid-beta (Aβ) production and tau pathology.

methodsThe REVERSE-SD (synaptic dysfunction) study was a multi-center phase 2, randomized, double-blind, placebo-controlled trial of the p38⍺ kinase inhibitor neflamapimod; conducted December 29, 2017, to June 17, 2019; 464 participants screened, and 161 randomized to either 40 mg neflamapimod (78 study participants) or matching placebo (83 study participants), orally twice daily for 24 weeks. Study participants are as follows: CSF AD-biomarker confirmed, Clinical Dementia Rating (CDR)-global score 0.5 or 1.0, CDR-memory score ≥0.5, and Mini-Mental State Examination (MMSE) 20-28. The primary endpoint was the improvement in episodic memory, assessed by combined change in Z-scores of Hopkins Verbal Learning Test-Revised (HVLT-R) Total and Delayed Recall. Secondary endpoints included change in Wechsler Memory Scale-IV (WMS) Immediate and Delayed Recall composites, CDR-SB, MMSE, and CSF biomarkers [total and phosphorylated tau (T-tau and p-tau

resultsAt randomization, the mean age is 72, 50% female, 77% with CDR-global score 0.5, and mean MMSE score 23.8. The incidence of discontinuation for adverse events and serious adverse events (all considered unrelated) was 3% each. No significant differences between treatment groups were observed in the primary or secondary clinical endpoints. Significantly reduced CSF levels with neflamapimod treatment, relative to placebo, were evident for T-tau [difference (95% CI): -18.8 (-35.8, -1.8); P=0.031] and p-tau CONCLUSIONS AND RELEVANCE: A 24-week treatment with 40 mg neflamapimod twice daily did not improve episodic memory in patients with mild AD. However, neflamapimod treatment lowered CSF biomarkers of synaptic dysfunction. Combined with PK-PD findings, the results indicate that a longer duration study of neflamapimod at a higher dose level to assess effects on AD progression is warranted.

trial registrationClinicalTrials.gov identifier: NCT03402659 . Registered on January 18, 2018.

Indexed as

Alzheimer DiseaseAmyloid beta-PeptidesDouble-Blind MethodFemaleHumansMaleProtein Kinase InhibitorsTreatment OutcomeAmyloid beta-PeptidesProtein Kinase InhibitorsAlzheimer’sClinical trialCSF biomarkersEpisodic memoryp38 MAPKSynaptic dysfunction

Identifiers

PMID34044875
PMCPMC8157623
OpenAlexW3164375568

What OpenQuestion holds

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.