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Safety of azathioprine and 6-mercaptopurine in patients with inflammatory bowel disease naive to thiopurine treatment
Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Medicin.
Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Medicin.
Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Medicin.
Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Medicin.
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2017 (engelsk)Inngår i: International journal of clinical pharmacology and therapeutics, ISSN 0946-1965, Vol. 55, nr 7, s. 594-600Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Objectives: To determine if 6-mercaptopurine (MP) is better tolerated than azathioprine (AZA) as the initial thiopurine treatment in patients suffering from inflammatory bowel disease (IBD). Switching patients with IBD from AZA to MP is advocated in patients intolerant to AZA. However, no study has determined if MP is more suited than AZA as a first-line treatment for patients who are naive to thiopurine treatment. Study: The tolerance of AZA and MP treatments in clinical practice was retrospectively evaluated from start to 12 months after initiating treatment in 113 patients with IBD who were all naive to thiopurines (82 patients treated with AZA and 31 patients with MP). Results: 65% of the patients treated with AZA and 61% of the patients treated with MP tolerated their treatment during 12 months (i.e., no group difference, p = 0.742). No difference in reported side effects between the two treatments was observed. The mean equivalent initial dose (0.92 vs. 0.61 mg/kg; p < 0.001) and the mean equivalent dose at 12 months (1.98 vs. 1.65 mg/kg; p = 0.014) was significantly higher in the MP group vs. the AZA group. The proportion of patients with.MCV = 7 at 12 months was numerically higher in the MP group than in the AZA group (53% vs. 31%; p = 0.090). Conclusions: In this retrospective observational study, no differences in tolerance or adherence between AZA and MP were observed in patients naive to thiopurines. However, MP treatment was at a higher equivalent thiopurine dose than AZA treatment, which tended to be associated with better treatment response.

sted, utgiver, år, opplag, sider
DUSTRI-VERLAG DR KARL FEISTLE , 2017. Vol. 55, nr 7, s. 594-600
Emneord [en]
azathioprine, Crohn's disease, inflammatory bowel disease, mercaptopurine, ulcerative colitis
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Identifikatorer
URN: urn:nbn:se:umu:diva-137974DOI: 10.5414/CP202962ISI: 000404885900007PubMedID: 28406092OAI: oai:DiVA.org:umu-137974DiVA, id: diva2:1129255
Tilgjengelig fra: 2017-08-02 Laget: 2017-08-02 Sist oppdatert: 2018-06-09bibliografisk kontrollert

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