Evidence map›Paper›PMID 34425883›Full record

ArticleAlzheimer's research & therapy2021

Rationale and study design of a randomized, placebo-controlled, double-blind phase 2b trial to evaluate efficacy, safety, and tolerability of an oral glutaminyl cyclase inhibitor varoglutamstat (PQ912) in study participants with MCI and mild AD-VIVIAD.

E G B Vijverberg, T M Axelsen, A R Bihlet, K Henriksen, F Weber, K Fuchs, J E Harrison, K Kühn-Wache, P Alexandersen, N D Prins and 1 more

Registry-linked trialOpen access · goldAbstract readClinical Trial Protocol
In one paragraph

Article 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 NCT04498650 (A Phase 2b Multicentre, Randomized, Double-blind, Placebo-controlled, Parallel Group Dose Finding, Safety, Tolerability and Efficacy Study of PQ912 in Subjects With MCI and Mild Dementia Due to Alzheimer's Disease.), which is not on this map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
3.8field-weighted citation impact, top 6% 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.

NCT04498650 phase2completednot on this map

A Phase 2b Multicentre, Randomized, Double-blind, Placebo-controlled, Parallel Group Dose Finding, Safety, Tolerability and Efficacy Study of PQ912 in Subjects With MCI and Mild Dementia Due to Alzheimer's Disease.

TypeinterventionalSponsorVivoryon Therapeutics N.V.Ran2020 to 2024Enrolled259ConditionsEarly Alzheimers Disease, Mild Cognitive Impairment Due to ADArmsPQ912, Placebo
3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 35 citations in OpenAlex.

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  8. P2Y1 receptor in Alzheimer's disease.Neural regeneration research · 2025
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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

11 authors at 6 institutions in 4 countries.

E G B Vijverberg *Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands.
T M Axelsen *Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
A R BihletNBCD A/S, Herlev, Denmark.
K HenriksenVivoryon Therapeutics NV, Halle, Germany.
F WeberVivoryon Therapeutics NV, Halle, Germany.
K FuchsVivoryon Therapeutics NV, Halle, Germany.
J E HarrisonAlzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands.
K Kühn-WacheVivoryon Therapeutics NV, Halle, Germany.
P AlexandersenSanos Clinic A/S, Vejle, Denmark.
N D PrinsAlzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands.
Philip ScheltensAlzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands. p.scheltens@amsterdamumc.nl.ORCID 0000-0002-1046-6408
Ribon Therapeutics (United States) · USAmsterdam Neuroscience · NLHerlev Hospital · DKKing's College London · GBUniversity of Copenhagen · DKVejle Sygehus · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundVaroglutamstat (formerly PQ912) is a small molecule that inhibits the activity of the glutaminyl cyclase to reduce the level of pyroglutamate-A-beta (pGluAB42). Recent studies confirm that pGluAB42 is a particular amyloid form that is highly synaptotoxic and plays a significant role in the development of AD.

methodsThis paper describes the design and methodology behind the phase 2b VIVIAD-trial in AD. The aim of this study is to evaluate varoglutamstat in a state-of-the-art designed, placebo-controlled, double-blind, randomized clinical trial for safety and tolerability, efficacy on cognition, and effects on brain activity and AD biomarkers. In addition to its main purpose, the trial will explore potential associations between novel and established biomarkers and their individual and composite relation to disease characteristics.

resultsTo be expected early 2023

conclusionThis state of the art phase 2b study will yield important results for the field with respect to trial methodology and for the treatment of AD with a small molecule directed against pyroglutamate-A-beta.

trial registrationClinicalTrials.gov Identifier: NCT04498650.

Indexed as

Alzheimer DiseaseAminoacyltransferasesDouble-Blind MethodHumansRandomized Controlled Trials as TopicTreatment OutcomeAminoacyltransferasesglutaminyl-peptide cyclotransferaseAbetaAlzheimerAmyloidClinical trials; Small molecules; PuroglutamatePlacebo

Identifiers

PMID34425883
PMCPMC8381483
OpenAlexW3137331428

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

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.