Evidence map›Paper›PMID 28370224›Full record

SynthesisBritish journal of clinical pharmacology2017

Do antiepileptic drugs increase the risk of infectious diseases? A meta-analysis of placebo-controlled studies.

Gaetano Zaccara, Fabio Giovannelli, Filippo Sean Giorgi, Valentina Franco, Sara Gasparini, Francesco Mandò Tacconi

Open access · bronzeAbstract readMeta-AnalysisReview
In one paragraph

Synthesis in British journal of clinical pharmacology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
3.2field-weighted citation impact, top 9% 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

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 25 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Clinical Deterioration in Dogs with Idiopathic Epilepsy Caused byAnimals : an open access journal from MDPI · 2025
    Article
  4. Article
  5. Review
  6. Article
  7. Review
  8. Review
  9. Review
  10. Brivaracetam exhibits mild pro-inflammatory features in anFrontiers in cellular neuroscience · 2022
    Article
  11. Article
  12. 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 4 institutions in 1 country.

Gaetano ZaccaraUnit of Neurology, Department of Medicine, Florence Health Authority, Florence, Italy.
Fabio GiovannelliUnit of Neurology, Department of Medicine, Florence Health Authority, Florence, Italy.
Filippo Sean GiorgiDepartment of Clinical and Experimental Medicine, Section of Neurology, University of Pisa and Pisa University Hospital, Pisa, Italy.
Valentina FrancoDepartment of Internal Medicine and Therapeutics, Division of Clinical and Experimental Pharmacology, University of Pavia, Pavia, Italy.
Sara GaspariniDepartment of Medical and Surgical Sciences, Magna Graecia University of Catanzaro, Catanzaro, Italy.
Francesco Mandò TacconiPharmacovigilance Centre, Florence Health Authority, Florence, Italy.
University of Florence · ITMagna Graecia University · ITUniversity of Pavia · ITUniversity of Pisa · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimsExperimental studies show that some antiepileptic drugs (AEDs) may modify natural immune defences, thus influencing the risk of developing infectious diseases. The aim of this meta-analysis was to explore whether AEDs as a class of drugs or singularly may increase risk of infectious diseases.

methodsA meta-analysis of all randomized, double-blind, placebo-controlled trials (RCTs) investigating any AED in any condition was performed. All terms that could be coded in the System Organ Classes (SOCs) of infections and infestations using the Medical Dictionary for Regulatory Activities were recorded. Additional subanalyses were performed also pooling together AEDs sharing similar mechanisms of action.

resultsTwo hundreds and sixty-nine double-blind, placebo-controlled studies were identified and, among them, 127 RCTs with 16 AEDs (brivaracetam, gabapentin, lacosamide, levetiracetam, lamotrigine, oxcarbazepine, perampanel, pregabalin, phenytoin, remacemide, retigabine, rufinamide, tiagabine, topiramate, valproate, zonisamide) reported at least one of 19 symptoms or diseases that could be included in the Medical Dictionary for Regulatory Activities SOC term infections and infestations. These terms were singularly recorded and then pooled together in the SOC term infection and infestation. Topiramate was significantly associated with an increased risk of infection (risk difference = 0.04; 95% confidence interval = 0.01/0.06), while oxcarbazepine was significantly associated with a lower risk (-0.005; -0.09/-0.01). Risk difference of all studies with all AEDs showed a slight, but significantly increased risk of infection (0.01; 0.00/0.002). Levetiracetam and brivaracetam RCTs, when pooled together, were associated with a significantly increased risk of infection (0.03; 0.01/0.05).

conclusionsSome AEDs are associated with a mild increased risk of infection.

Indexed as

AnticonvulsantsCommunicable DiseasesHumansAnticonvulsantsadverse effectsantiepileptic drugsinfectionmedDRAmeta-analysis

Identifiers

PMID28370224
PMCPMC5555858
OpenAlexW2604363982

What OpenQuestion holds

Textmetadata
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.