Article (Scientific journals)
Multidrug resistance gene-1 polymorphisms and resistance to cyclosporine a in patients with steroid resistant ulcerative colitis
Daniel, F.; Loriot, M. A.; Seksik, P. et al.
2007In Inflammatory Bowel Diseases, 13 (1), p. 19-23
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Keywords :
ulcerative colitis; cyclosporine; multidrug resistance gene-1
Abstract :
[en] Background: Cyclosporine A (CsA) is inconstantly effective in inducing remission in acute attacks of ulcerative colitis (UC) not responding to steroids. This study aimed to establish whether multidrug resistance gene (MDR)1 polymorphisms would be associated with CsA failure. Patients and Methods: The distribution of the different genotypes of single nucleotide polymorphisms (SNP) G2677T/A and C3435T of MDR1 exons 21 and 26, respectively, was studied in 154 patients (mean age, 44 yr) who had received CsA to treat severe attacks of steroid resistant UC in 11 centers in France and Belgium. Patients were classified as CsA failure (n = 50) when they needed colectomy within 30 days after CsA initiation. The SNPs were detected by use of a 5' nuclease allelic discrimination assay. Results: There was a significant association between the G2677T/A polymorphism distribution (exon 21) and the risk for CsA failure (P = 0.0001). The TT genotype of exon 21 was significantly associated with the risk compared with the two other genotypes (odds ratio, 3.77; 95% confidence interval, 1.42-9.97, P = 0.007). There was no significant association between the genotype C3435T distribution (exon 26) and the risk of CsA failure (P = 0.23). Conclusion: The TT genotype of exon 21 MDR1 polymorphisms is associated with a higher risk of CsA failure in patients with steroid resistant UC. Further studies should be performed to establish whether other treatments could be more efficient to avoid surgery in this subset of patients.
Disciplines :
Gastroenterology & hepatology
Author, co-author :
Daniel, F.
Loriot, M. A.
Seksik, P.
Cosnes, J.
Gornet, J. M.
Lemann, M.
Fein, F.
Vernier-Massouille, G.
De Vos, M.
Boureille, A.
Treton, X.
Flourie, B.
Roblin, X.
Louis, Edouard  ;  Université de Liège - ULiège > Département des sciences cliniques > Hépato-gastroentérologie
Zerbib, F.
Beaune, P.
Marteau, P.
More authors (7 more) Less
Language :
English
Title :
Multidrug resistance gene-1 polymorphisms and resistance to cyclosporine a in patients with steroid resistant ulcerative colitis
Publication date :
January 2007
Journal title :
Inflammatory Bowel Diseases
ISSN :
1078-0998
eISSN :
1536-4844
Publisher :
John Wiley & Sons Inc, Hoboken, United States - New Jersey
Volume :
13
Issue :
1
Pages :
19-23
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 15 October 2009

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