Evidence map›Paper›PMID 33249752›Full record

ArticleAnnals of clinical and translational neurology2021

Epilepsy risk in offspring of affected parents; a cohort study of the "maternal effect" in epilepsy.

Julie W Dreier, Colin A Ellis, Samuel F Berkovic, Chris Cotsapas, Ruth Ottman, Jakob Christensen

Open access · goldAbstract read
In one paragraph

Article in Annals of clinical and translational neurology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
2.0field-weighted citation impact, top 13% 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

9 citing papers in PubMed, 19 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

6 authors at 5 institutions in 3 countries.

Julie W DreierNational Centre for Register-Based Research, Department of Economics and Business Economics, Aarhus BSS, Aarhus University, Aarhus, Denmark.ORCID 0000-0002-9339-4170
Colin A EllisDepartment of Neurology, University of Pennsylvania Perelman School of Medicine, Philadelphia, USA.
Samuel F BerkovicEpilepsy Research Centre, Department of Medicine, University of Melbourne (Austin Health), Heidelberg, Victoria, Australia.ORCID 0000-0003-4580-841X
Chris CotsapasDepartments of Neurology and Genetics, Yale School of Medicine, New Haven, USA.
Ruth OttmanDepartments of Epidemiology and Neurology, and the G. H. Sergievsky Center, Columbia University, New York, New York, USA.
Jakob ChristensenNational Centre for Register-Based Research, Department of Economics and Business Economics, Aarhus BSS, Aarhus University, Aarhus, Denmark.
Aarhus University · DKNew York Psychoanalytic Society and Institute · USThe University of Melbourne · AUUniversity of Pennsylvania · USYale University · US

Funding

Yale Clinical and Translational Science Award (U Component)UL1TR001863 · NCATS · YALE UNIVERSITY · PI John H. Krystal, LUCILA OHNO-MACHADO · 2016 to 2026
$102.9M
Center for Research on the Ethical, Legal and Social Implications of Psychiatric, Neurologic and Behavioral GeneticsP50HG007257 · NHGRI · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI APPELBAUM, PAUL STUART · 2013 to 2017
$5.4M
Psychosocial Impact of Genetics in EpilepsyR01NS104076 · NINDS · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI OTTMAN, RUTH · 2018 to 2022
$3.2M
Shared Genetics and Risk Factors Between Epilepsy and Psychiatric DiseaseR01NS106104 · NINDS · YALE UNIVERSITY · PI BRENNAND, KRISTEN JENNIFER · 2019 to 2023
$2.5M
NCATS NIH HHS UL1 TR001863NIH HHS P50 HG007257NIH HHS R01 NS104076NINDS NIH HHS 1R01NS106104-01A1NINDS NIH HHS R01 NS104076NINDS NIH HHS R01 NS106104
6 · The paper itself

Abstract

objectiveTo assess whether the risk of epilepsy is higher in offspring of mothers with epilepsy than in offspring of fathers with epilepsy.

methodsIn a prospective population-based register study, we considered all singletons born in Denmark between 1981 and 2016 (N = 1,754,742). From the Danish National Patient Register since 1977, we identified epilepsy diagnoses in all study participants and their family members. Cox regression models were used to estimate hazard ratios (HRs) and corresponding 95% confidence intervals (CI), adjusted for relevant confounders.

resultsWe included 1,754,742 individuals contributing > 30 million person-years of follow-up. The incidence rate of epilepsy in offspring of unaffected parents was 78.8 (95% CI: 77.8-79.8) per 100,000 person-years, while the corresponding rate in offspring with an affected father was 172 per 100,000 person-years (95% CI: 156-187) and in offspring with an affected mother was 260 per 100,000 person-years (95% CI: 243-277). Having an affected mother was associated with a 1.45-fold (95% CI: 1.30-1.63) higher risk of epilepsy in the offspring, compared to having an affected father. This maternal effect was found both in male (HR = 1.39, 95% CI: 1.19-1.62) and female offspring (HR = 1.53, 95% CI: 1.30-1.80), and across various ages at onset in the offspring. The maternal effect was also found in familial epilepsies (i.e. where the affected parent had an affected sibling; HR = 1.50, 95% CI: 1.04-2.16).

interpretationWe found a clear maternal effect on offspring risk of epilepsy in this nationwide cohort study.

Indexed as

Maternal InheritanceAdolescentAdultChildChild, PreschoolCohort StudiesDenmarkEpilepsyFathersFemaleGenetic Predisposition to DiseaseHumansInfantInfant, NewbornMaleMothers

Identifiers

PMID33249752
PMCPMC7818075
OpenAlexW3109719490

What OpenQuestion holds

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LicenceCC BY-NC-ND
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.