Evidence map›Paper›PMID 28202008›Full record

SynthesisBMC neurology2017

Relationship between ABCB1 3435TT genotype and antiepileptic drugs resistance in Epilepsy: updated systematic review and meta-analysis.

Malek Chouchi, Wajih Kaabachi, Hedia Klaa, Kalthoum Tizaoui, Ilhem Ben-Youssef Turki, Lamia Hila

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in BMC neurology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
5.7field-weighted citation impact, top 3% 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

18 citing papers in PubMed, 1 synthesis or guideline pooled it, 75 citations in OpenAlex.

  1. Pooled it
  2. Association BetweenPharmaceuticals (Basel, Switzerland) · 2025
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  16. Lack of association between valproic acid response and polymorphisms of its metabolism, transport, and receptor genes in children with focal seizures.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2019
    Article
  17. Disease markers · 2019
    Article
  18. 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.

Malek ChouchiDepartment of Genetic, Tunis El Manar University, Faculty of Medicine of Tunis, 15 Jebel Lakhdhar street, La Rabta, 1007, Tunis, Tunisia. chch.m@hotmail.fr.
Wajih KaabachiDivision of Histology and Immunology Division, Department of Basic Sciences, Faculty of Medicine of Tunis, 15 Jebel Lakhdhar street, La Rabta, 1007, Tunis, Tunisia.
Hedia KlaaDepartment of Child Neurology, National Institute Mongi Ben Hmida of Neurology, UR12SP24 Abnormal Movements of Neurologic Diseases, Jebel Lakhdhar street, La Rabta, 1007, Tunis, Tunisia.
Kalthoum TizaouiDivision of Histology and Immunology Division, Department of Basic Sciences, Faculty of Medicine of Tunis, 15 Jebel Lakhdhar street, La Rabta, 1007, Tunis, Tunisia.
Ilhem Ben-Youssef TurkiDepartment of Child Neurology, National Institute Mongi Ben Hmida of Neurology, UR12SP24 Abnormal Movements of Neurologic Diseases, Jebel Lakhdhar street, La Rabta, 1007, Tunis, Tunisia.
Lamia HilaDepartment of Genetic, Faculty of Medicine of Tunis, 15 Jebel Lakhdhar street, La Rabta, 1007, Tunis, Tunisia.
National Institute of Neurology Mongi-Ben Hamida · TNTunis University · TNFaculté de médecine de TunisTunis El Manar University · TN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAntiepileptic drugs (AEDs) are effective medications available for epilepsy. However, many patients do not respond to this treatment and become resistant. Genetic polymorphisms may be involved in the variation of AEDs response. Therefore, we conducted an updated systematic review and a meta-analysis to investigate the contribution of the genetic profile on epilepsy drug resistance.

methodsWe proceeded to the selection of eligible studies related to the associations of polymorphisms with resistance to AEDs therapy in epilepsy, published from January 1980 until November 2016, using Pubmed and Cochrane Library databases. The association analysis was based on pooled odds ratios (ORs) and 95% confidence intervals (CIs).

resultsFrom 640 articles, we retained 13 articles to evaluate the relationship between ATP-binding cassette sub-family C member 1 (ABCB1) C3435T polymorphism and AEDs responsiveness in a total of 454 epileptic AEDs-resistant cases and 282 AEDs-responsive cases. We found a significant association with an OR of 1.877, 95% CI 1.213-2.905. Subanalysis by genotype model showed a more significant association between the recessive model of ABCB1 C3435T polymorphism (TT vs. CC) and the risk of AEDs resistance with an OR of 2.375, 95% CI 1.775-3.178 than in the dominant one (CC vs. TT) with an OR of 1.686, 95% CI 0.877-3.242.

conclusionOur results indicate that ABCB1 C3435T polymorphism, especially TT genotype, plays an important role in refractory epilepsy. As genetic screening of this genotype may be useful to predict AEDs response before starting the treatment, further investigations should validate the association.

Indexed as

AnticonvulsantsATP Binding Cassette Transporter, Subfamily BDrug ResistanceEpilepsyGenotypeHumansPolymorphism, Single NucleotideABCB1 protein, humanAnticonvulsantsATP Binding Cassette Transporter, Subfamily BABCB1 C3435T polymorphismAntiepileptic drugsEpilepsyMeta-analysisResistance

Identifiers

PMID28202008
PMCPMC5311838
OpenAlexW2588710572

What OpenQuestion holds

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LicenceCC BY
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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.