Evidence map›Paper›PMID 21691805›Full record

ArticleEuropean journal of clinical pharmacology2011

Mild hypoglycaemic attacks induced by sulphonylureas related to CYP2C9, CYP2C19 and CYP2C8 polymorphisms in routine clinical setting.

Osman Gökalp, Arzu Gunes, Hakan Cam, Erkan Cure, Osman Aydın, Mehmet Numan Tamer, Maria Gabriella Scordo, Marja-Liisa Dahl

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Article in European journal of clinical pharmacology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
4.1field-weighted citation impact, top 7% 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, 1 synthesis or guideline pooled it, 36 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Pharmacogenetics and Molecular Ancestry ofPharmaceuticals (Basel, Switzerland) · 2025
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  7. Effect ofCurrent drug metabolism · 2022
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  8. A pharmacogenetic pilot study ofJournal of diabetes and metabolic disorders · 2021
    Article
  9. Article
  10. Article
  11. Review
  12. Pharmacogenomics and personalized medicine · 2019
    Article
  13. Pharmacogenetics of Antidiabetic Drugs.Advances in pharmacology (San Diego, Calif.) · 2018
    Review
  14. Review
  15. Review
  16. Article
  17. Review
  18. Article
  19. Review
  20. Applications of CYP450 testing in the clinical setting.Molecular diagnosis & therapy · 2013
    Review
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

8 authors at 6 institutions in 3 countries.

Osman GökalpMedical Faculty, Department of Pharmacology, Dicle University, Diyarbakir, Turkey.
Arzu Gunes
Hakan Cam
Erkan Cure
Osman Aydın
Mehmet Numan Tamer
Maria Gabriella Scordo
Marja-Liisa Dahl
Süleyman Demirel University · TRDicle University · TRKarolinska University Hospital · SEMedical Products Agency · SESuleyman Demirel University · KZUppsala University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimTo evaluate the impact of polymorphisms in the cytochrome P450 (CYP) 2C9, 2C19 and 2C8 genes on the risk of mild hypoglycaemic attacks in patients treated with sulphonylureas.

methodsOne hundred and eight type 2 diabetic patients (50 men, 58 women), treated with oral antidiabetics, including at least one from the sulphonylurea group (glimepiride n = 50, gliclazide n = 46, or glipizide n = 12) for 3 months or longer, were included in the study. Symptoms of hypoglycaemia (sweating, tremor, anxiety and palpitations) during a 3 month period were recorded and confirmed by home glucose measurements. Gender, age, body mass index, creatinine clearance, HbA1c, oral antidiabetic dose and concomitant medication were assessed together with functional CYP2C9, CYP2C19 and CYP2C8 polymorphisms, analysed by real-time PCR methods.

resultsFifteen patients (eight men, seven women) reported hypoglycaemia symptoms which were validated by their home glucose measurements (< 70 mg/dl). Heterozygosity and homozygosity for CYP2C9 variant alleles (*2 or *3) tended to be more frequent among patients who reported hypoglycaemic attacks (60 and 7%) than those who did not (39 and 3%). Similarly, the CYP2C8*1/*3 genotype tended to be more frequent in patients with (47%) than without (27%) hypoglycaemia, while no such trend was observed for CYP2C19 variants. However, only in the gliclazide group a significant association between CYP2C9 genotype and hypoglycaemic attacks was observed (P = 0.035). None of the other covariates showed any significant association with the risk of hypoglycaemic attacks.

conclusionsCYP2C9 polymorphisms leading to decreased enzyme activity show a modest impact on the risk of mild hypoglycaemia attacks during oral antidiabetic treatment, with a significant association in patients treated with gliclazide.

Indexed as

AdultAgedAged, 80 and overAryl Hydrocarbon HydroxylasesCytochrome P-450 CYP2C19Cytochrome P-450 CYP2C8Cytochrome P-450 CYP2C9Diabetes Mellitus, Type 2FemaleHumansHypoglycemiaHypoglycemic AgentsMaleMiddle AgedPolymorphism, GeneticSulfonylurea CompoundsAryl Hydrocarbon HydroxylasesCYP2C19 protein, humanCYP2C8 protein, humanCYP2C9 protein, humanCytochrome P-450 CYP2C19Cytochrome P-450 CYP2C8Cytochrome P-450 CYP2C9Hypoglycemic AgentsSulfonylurea Compounds

Identifiers

PMID21691805
OpenAlexW2063046155

What OpenQuestion holds

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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.