Evidence map›Paper›PMID 25478019›Full record

ArticleAlzheimer's research & therapy2014

The effect of galantamine on brain atrophy rate in subjects with mild cognitive impairment is modified by apolipoprotein E genotype: post-hoc analysis of data from a randomized controlled trial.

Niels D Prins, Wiesje A van der Flier, Dirk L Knol, Nick C Fox, H Robert Brashear, Jeffrey S Nye, Frederik Barkhof, Philip Scheltens

Open access · goldAbstract read
In one paragraph

Article in Alzheimer's research & therapy, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 3 pooled it
1.9field-weighted citation impact, top 16% 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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 3 syntheses or guidelines pooled it, 27 citations in OpenAlex.

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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

8 authors at 5 institutions in 3 countries.

Niels D PrinsAlzheimer Centre, Department of Neurology, VU University Medical Centre, PO Box 7057, 1007 MB Amsterdam, the Netherlands ; Alzheimer Research Center, Gebouw Cronenburg, Cronenburg 75, 1081 GM Amsterdam, the Netherlands.
Wiesje A van der FlierAlzheimer Centre, Department of Neurology, VU University Medical Centre, PO Box 7057, 1007 MB Amsterdam, the Netherlands ; Alzheimer Research Center, Gebouw Cronenburg, Cronenburg 75, 1081 GM Amsterdam, the Netherlands.
Dirk L KnolDepartment of Epidemiology & Biostatistics, VU University Medical Centre, PO Box 7057, 1007 MB Amsterdam, the Netherlands.
Nick C FoxDementia Research Centre (N.C.F.), Department of Neurodegenerative Disease, Institute of Neurology, University College London, 8-11 Queen Square, London WC1N 3BG, UK.
H Robert BrashearJanssen Alzheimer Immunotherapy Research and Development, 700 Gateway Blvd, South San Francisco, CA 94080, USA.
Jeffrey S NyeJanssen Research and Development, LLC Johnson and Johnson Innovation, One Cambridge Center, 7th Floor, Cambridge, MA 02142, USA.
Frederik BarkhofAlzheimer Centre, Department of Neurology, VU University Medical Centre, PO Box 7057, 1007 MB Amsterdam, the Netherlands ; Department of Radiology, Image Analysis Centre, VU University Medical Centre, PO Box 7057, 1007 MB Amsterdam, the Netherlands.
Philip ScheltensAlzheimer Centre, Department of Neurology, VU University Medical Centre, PO Box 7057, 1007 MB Amsterdam, the Netherlands.
Amsterdam UMC Location VUmc · NLJanssen (United States) · USJohnson & Johnson (United States) · USUniversity College London · GBVrije Universiteit Amsterdam · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionThe aim of this investigation was to assess the effect of galantamine, an acetylcholinesterase inhibitor and allosteric modulator of nicotinic receptors, on brain atrophy in individuals with mild cognitive impairment (MCI), and to assess effect modification by apolipoprotein E (APOE) genotype.

methodsWe used data from the Galantamine-International-11 (Gal-Int-11) trial, a 24-month, randomized, double blind, placebo-controlled, flexible-dose (16 to 24 mg daily) study in patients with MCI. Brain magnetic resonance imaging (MRI), including a 3-dimensional T1-weighted gradient echo volumetric sequence, was performed at screening and at 24 months. We recorded whole brain and hippocampal volumes, and calculated annual atrophy rates. Linear regression analysis was used to calculate adjusted mean differences in the rate of whole brain and hippocampal atrophy, between MCI patients treated with galantamine and with placebo. Additionally, we performed stratified analyses according to APOE genotype.

resultsData from 364 MCI patients with 24-month MRI data (galantamine, n = 176; placebo, n = 188) were included in the volumetric analysis. Subjects treated with galantamine demonstrated a lower rate of whole brain atrophy compared to those treated with placebo (adjusted mean difference 0.18% per year (95% confidence interval (CI) 0.04; 0.30)). Stratified analyses according to APOE genotype, showed that this effect was confined to patients who carried an APOE ϵ4 allele (adjusted mean difference 0.28% per year (95% CI 0.07; 0.50)). Rates of hippocampal atrophy did not differ significantly between study groups.

conclusionsPatients with MCI who were treated with galantamine demonstrated a lower rate of whole brain atrophy, but not of hippocampal atrophy, over a 24-month treatment period, compared to those treated with placebo. This protective effect of galantamine on whole brain atrophy rate in MCI was only present in APOE ϵ4 carriers.

Identifiers

PMID25478019
PMCPMC4255389
OpenAlexW2135953726

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Registered trials

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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.