Evidence map›Paper›PMID 29334906›Full record

ArticleBMC neurology2018

Rationale and design of the CAROLINA® - cognition substudy: a randomised controlled trial on cognitive outcomes of linagliptin versus glimepiride in patients with type 2 diabetes mellitus.

Geert Jan Biessels, Jolien Janssen, Esther van den Berg, Bernard Zinman, Mark A Espeland, Michaela Mattheus, Odd Erik Johansen, CAROLINA® investigators

Open access · goldAbstract readClinical Trial Protocol
In one paragraph

Article in BMC neurology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
4.1field-weighted citation impact, top 5% 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, 31 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Article
  5. Article
  6. Diabetes Therapies for Dementia.Current neurology and neuroscience reports · 2019
    Review
  7. Review
  8. Review
  9. Review
  10. HbADiabetes care · 2019
    Article
  11. Article
  12. Observational
  13. Review
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 5 countries.

Geert Jan BiesselsDepartment of Neurology, G03.232 Brain Center Rudolf Magnus, University Medical Center, PO Box 85500, 3508, GA, Utrecht, the Netherlands. G.J.Biessels@umcutrecht.nl.ORCID http://orcid.org/0000-0001-6862-2496
Jolien JanssenDepartment of Neurology, G03.232 Brain Center Rudolf Magnus, University Medical Center, PO Box 85500, 3508, GA, Utrecht, the Netherlands.
Esther van den BergDepartment of Neurology, G03.232 Brain Center Rudolf Magnus, University Medical Center, PO Box 85500, 3508, GA, Utrecht, the Netherlands.
Bernard ZinmanLunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Canada, Division of Endocrinology, University of Toronto, Toronto, Canada.
Mark A EspelandDepartment of Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem, NC, USA.
Michaela MattheusGlobal biometrics and datamanagement, Boehringer Ingelheim, Ingelheim, Germany.
Odd Erik JohansenClinical development, Therapeutic Area Metabolism, Boehringer Ingelheim, Asker, Norway.
CAROLINA® investigators
Boehringer Ingelheim (Germany) · DEMount Sinai Hospital · CAUniversity Medical Center Utrecht · NLBoehringer Ingelheim (Norway) · NOErasmus MC · NL

Funding

Wake Forest Alzheimer's Disease Core CenterP30AG049638 · NIA · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI RAPP, STEPHEN R · 2016 to 2020
$12.2M
6 · The paper itself

Abstract

backgroundType 2 diabetes mellitus is associated with cognitive dysfunction and an increased risk of dementia. Linagliptin is a glucose-lowering agent of the dipeptidyl peptidase-IV (DPP-IV) inhibitor class that is of particular interest for the prevention of accelerated cognitive decline, because it may potentially benefit the brain through pleiotropic effects, beyond glucose lowering. This paper presents the design of a study that aims to establish if linagliptin is superior to the sulfonylurea glimepiride in the prevention of accelerated cognitive decline in patients with type 2 diabetes mellitus.

methodsThe cognition substudy is an integral part of the ongoing event-driven, randomised, double blind CARdiOvascular safety of LINAgliptin (CAROLINA®) trial, which evaluates the effect of treatment with linagliptin versus glimepiride on cardiovascular outcomes. CAROLINA® includes patients with type 2 diabetes mellitus with sub-optimal glycaemic control at elevated cardiovascular risk. The substudy will evaluate patients randomised and treated who have a baseline Mini Mental State Examination (MMSE) score ≥ 24, documented years of formal education with at least one valid cognitive assessment at baseline and during follow-up. The primary cognitive outcome is the occurrence of accelerated cognitive decline at the end of follow-up. The two treatment groups will be compared by using a logistic regression. Accelerated cognitive decline is defined as a rate of cognitive decline that falls at or below the 16th percentile of decline for the whole cohort on either the MMSE or a combined score of the trail making and verbal fluency test. Potential confounders are taken into account at an individual patient level, using a regression based index. DISCUSSION: Between December 2010 and December 2012, 6042 patients were randomised and treated with either linagliptin (5 mg) or glimepiride (1-4 mg) once daily in CAROLINA®. Cognitive tests were conducted in nearly 4500 participants at baseline and are scheduled for two subsequent assessments, after 160 weeks of follow-up and end of follow-up. This substudy of the ongoing CAROLINA® trial will establish if linagliptin is superior to glimepiride in the prevention of accelerated cognitive decline in patients with type 2 diabetes mellitus. Final results are expected in 2019.

trial registrationClinicalTrials.gov Identifier: NCT 01243424 .

Indexed as

AgedCognitive DysfunctionDiabetes Mellitus, Type 2Double-Blind MethodFemaleHumansHypoglycemic AgentsLinagliptinMaleMiddle AgedRandomized Controlled Trials as TopicResearch DesignSulfonylurea CompoundsTreatment OutcomeglimepirideHypoglycemic AgentsLinagliptinSulfonylurea CompoundsCognitionDementiaDipeptidyl peptidase-IV inhibitorOral glucose-lowering agentType 2 diabetes mellitus

Identifiers

PMID29334906
PMCPMC5769408
OpenAlexW2782868584

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.