Evidence map›Paper›PMID 34100993›Full record

ArticleEuropean journal of clinical pharmacology2021

Second-generation antipsychotic use during pregnancy and risk of congenital malformations.

Maria Ellfolk, Maarit K Leinonen, Mika Gissler, Sonja Kiuru-Kuhlefelt, Leena Saastamoinen, Heli Malm

Open access · hybridAbstract read
In one paragraph

Article in European journal of clinical pharmacology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 4 pooled it
5.3field-weighted citation impact, top 4% 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

20 citing papers in PubMed, 4 syntheses or guidelines pooled it, 33 citations in OpenAlex.

  1. Pooled it
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  11. Striking the Balance: Bipolar Disorder in the Perinatal Period.Focus (American Psychiatric Publishing) · 2024
    Review
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  19. Article
  20. Malformations and pregnancy with schizophrenia.The Lancet regional health. Europe · 2021
    Article
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 2 countries.

Maria EllfolkTeratology Information, Department of Emergency Medicine Services, Helsinki University and Helsinki University Hospital, Tukholmankatu 17, 00029 HUS, Helsinki, Finland.
Maarit K LeinonenInformation Services Department, Data and Analytics, Finnish Institute for Health and Welfare, PB 30, 00271, Helsinki, Finland.
Mika GisslerInformation Services Department, Health and Social Services Data and Information Management Unit, Finnish Institute for Health and Welfare, PB 30, 00271, Helsinki, Finland.
Sonja Kiuru-KuhlefeltInformation Services Department, Health and Social Services Data and Information Management Unit, Finnish Institute for Health and Welfare, PB 30, 00271, Helsinki, Finland.
Leena SaastamoinenResearch Unit, The Social Insurance Institution, Nordenskiöldinkatu 12, 00250, Helsinki, Finland.
Heli MalmTeratology Information, Department of Emergency Medicine Services, Helsinki University and Helsinki University Hospital, Tukholmankatu 17, 00029 HUS, Helsinki, Finland. heli.malm@hus.fi.ORCID http://orcid.org/0000-0001-5986-6640
Finnish Institute for Health and Welfare · FIHelsinki University Hospital · FISocial Insurance Institution · FIUniversity of Helsinki · FIUniversity of Turku · FI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo study if second-generation antipsychotic (S-GA) use during the first trimester of pregnancy is associated with an increased risk of major congenital malformations (MCM).

methodsA population-based birth cohort study using national register data extracted from the Drugs and Pregnancy database in Finland, years 1996-2017. The sampling frame included 1,273,987 pregnant women. We included singleton pregnancies ending in live or stillbirth or termination of pregnancy due to severe malformation. Pregnancies with exposure to known teratogens were excluded. Women were categorized into three groups: exposed to S-GAs (n = 3478), exposed to first-generation antipsychotics (F-GAs) (n = 1030), and unexposed (no purchases of S-GAs or F-GAs during pregnancy, n = 22,540). We excluded genetic conditions and compared the prevalence of MCMs in S-GA users to the two comparison groups using multiple logistic regression models.

resultsUse of S-GAs during early pregnancy was not associated with an increased risk of overall MCMs compared to unexposed (adjusted odds ratio, OR 0.92; 95% CI 0.72-1.19) or to F-GA users (OR 0.82; 95% CI 0.56-1.20). Of individual S-GAs, olanzapine use was associated with an increased risk of overall MCMs (OR 2.12; 95% CI 1.19-3.76), and specifically, an increased risk of musculoskeletal malformations (OR 3.71; 95% CI 1.35-10.1) when compared to unexposed, while comparisons to F-GA users did not show significant results.

conclusionsOlanzapine use is associated with an increased risk of major congenital malformations and specifically, musculoskeletal malformations. Use during pregnancy should be restricted to situations where no safer alternatives exist.

Indexed as

Abnormalities, Drug-InducedAntipsychotic AgentsBirth CohortFemaleFinlandHumansLogistic ModelsOlanzapinePregnancyAntipsychotic AgentsOlanzapineMajor congenital malformationsPregnancySecond-generation antipsychotics

Identifiers

PMID34100993
PMCPMC8528770
OpenAlexW3170357172

What OpenQuestion holds

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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.