Evidence map›Paper›PMID 39350386›Full record

ArticleThe journal of prevention of Alzheimer's disease2024

Lower Incidence of Dementia Following Cancer Diagnoses: Evidence from a Large Cohort and Mendelian Randomization Study.

D T Bassil, B Zheng, B Su, D Kafetsouli, C Udeh-Momoh, I Tzoulaki, S Ahmadi-Abhari, D C Muller, E Riboli, L T Middleton

Abstract read
In one paragraph

Article in The journal of prevention of Alzheimer's disease, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

11 citing papers in PubMed, 1 synthesis or guideline pooled it.

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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

10 authors.

D T BassilProf. Elio Riboli, Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, UK. Email: e.riboli@imperial.ac.uk, +44 (0)20 7594 3426.
B Zheng
B Su
D Kafetsouli
C Udeh-Momoh
I Tzoulaki
S Ahmadi-Abhari
D C Muller
E Riboli
L T Middleton

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe reported inverse association between cancer and subsequent Alzheimer's disease and related dementias (ADRD) remains uncertain.

objectivesTo investigate the association between these common conditions of old age and explore possible causal factors. DESIGN, SETTING, PARTICIPANTS AND MEASUREMENTS: We conducted a large population-based cohort analysis using data from 3,021,508 individuals aged 60 and over in the UK Clinical Practice Research Datalink (CPRD), over a period up to 30 years (1988-2018). Cox proportional hazards models were fitted to estimate hazard ratios (HR) for risk of dementia associated with previous cancer diagnosis. Competing risk models were employed to account for competing risk of death. Two-sample Mendelian Randomization analysis based on meta-analysis data from large-scale GWAS studies was also conducted.

resultsIn the CPRD cohort, 412,903 participants had cancer diagnosis and 230,558 were subsequently diagnosed with dementia over a median follow-up period of 7.9 years. Cancer survivors had a 25% lower risk of developing dementia (HR=0.75, 95% CI:0.74-0.76) after adjustment for potential confounders. Accounting for competing risk of death provided a sub-distribution HR of 0.56 (95% CI:0.55-0.56). Results were consistent for prevalent and incident cancer and different common cancer types. Two-sample Mendelian Randomization analysis, using 357 cancer-related instrumental single-nucleotide polymorphisms (SNPs) revealed evidence of vertical pleiotropy between genetically predicted cancer and reduced risk of Alzheimer's disease (OR=0.97,95% CI:0.95-0.99).

conclusionOur results provide strong epidemiological evidence of the inverse association between cancer and risk of ADRD and support the potential causal nature of this association via genetic instruments. Further investigations into the precise underlying biological mechanisms may reveal valuable information for new therapeutic approaches.

Indexed as

DementiaMendelian Randomization AnalysisNeoplasmsAgedAged, 80 and overAlzheimer DiseaseCohort StudiesFemaleGenome-Wide Association StudyHumansIncidenceMaleMiddle AgedProportional Hazards ModelsRisk FactorsUnited KingdomAlzheimer’s diseasecancercompeting risksDementiamendelian randomization analysis

Identifiers

PMID39350386
PMCPMC11436397

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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.