AI Article Synopsis

  • Azathioprine is an immunosuppressive medication used effectively for treating inflammatory bowel disease, with its active metabolite being 6-mercaptopurine.
  • Patients with low levels of the enzyme thiopurine methyltransferase may experience more severe side effects, including leukopenia and, in rare cases, pancytopenia.
  • Monitoring thiopurine methyltransferase activity is important but should complement regular blood tests, especially in cases of fever and severe neutropenia, where early antibiotic treatment is critical to avoid infections.

Article Abstract

Azathioprine is an immunosuppressive drug that has shown effectiveness in inflammatory bowel disease treatment. Its metabolite, 6-mercaptopurine, is metabolized through thiopurine methyltransferase. Patients with low enzyme activity may have more frequent and severe side effects. The most common is leukopenia, and rarely pancytopenia. The thiopurine methyltransferase activity monitoring shows an individualized profile of enzymatic activity but it should not replace monitoring by performing serial blood counts. In patients with fever and severe neutropenia, early empirical antibiotic treatment should be initiated to prevent severe and disseminated infection. Two patients with this condition are reported.

Download full-text PDF

Source
http://dx.doi.org/10.5546/aap.2016.e252DOI Listing

Publication Analysis

Top Keywords

thiopurine methyltransferase
8
[azathioprine-induced pancytopenia
4
pancytopenia case
4
case series]
4
series] azathioprine
4
azathioprine immunosuppressive
4
immunosuppressive drug
4
drug effectiveness
4
effectiveness inflammatory
4
inflammatory bowel
4

Similar Publications

Background: Thiopurine methyltransferase (TPMT) plays a crucial role in the detoxification of thiopurine drugs, including the antimetabolites azathioprine and 6-mercaptopurine (6-MP) used to treat autoimmune diseases and various cancers. These drugs interfere with DNA synthesis by inhibiting the production of purine-containing nucleotides, leading to the death of rapidly dividing cells. TPMT inactivates thiopurine drugs by methylating at the thiol group.

View Article and Find Full Text PDF

Nudix hydrolase 15 (NUDT15) deficiency is strongly associated with thiopurine-induced myelosuppression. Currently, testing for NUDT15 deficiency is based on the genotyping of the most frequent and clinically characterized no-function variants, that is, *2, *3 and *9. The Hispanic/Latino-predominant variant NUDT15 *4 (p.

View Article and Find Full Text PDF

Introduction: Thiopurine drugs are metabolized by thiopurine methyltransferase (TPMT) and low TPMT activity can result in severe adverse drug reactions. Therefore, TPMT testing is recommended for individuals receiving thiopurines to reduce the risk of toxicity.

Objectives: The objectives of this study were to assess the rate of TPMT testing among individuals receiving thiopurines and explore factors associated with undergoing TPMT testing in Australia.

View Article and Find Full Text PDF
Article Synopsis
  • Azathioprine (AZA), commonly used for autoimmune disorders and organ transplants, shows potential for modern applications in viral, rheumatic, and skin diseases.
  • Advances in pharmacogenomics and nanotechnology may enhance AZA's effectiveness while reducing side effects, particularly by utilizing the active metabolites 6-mercaptopurine and 6-thioguanine.
  • The study suggests that personalized medicine approaches, including genetic testing and innovative drug delivery systems, can improve treatment outcomes for conditions like systemic lupus erythematosus and psoriasis.
View Article and Find Full Text PDF

Budget impact analysis of TPMT and NUDT15 pharmacogenomic testing for 6-mercaptopurine in pediatric acute lymphoblastic leukemia patients.

Pharmacogenet Genomics

February 2025

Division of Neonatology, Department of Pediatrics, Fetal and Neonatal Institute, Children's Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.

Background: Pharmacogenomic testing identifies gene polymorphisms impacting drug metabolism, aiding in optimizing treatment efficacy and minimizing toxicity, thus potentially reducing healthcare utilization. 6-Mercaptopurine metabolism is affected by thiopurine methyltransferase ( TPMT ) and nudix hydrolase 15 ( NUDT15 ) polymorphisms. We sought to estimate the budget impact of preemptive pharmacogenomic testing for these genes in pediatric acute lymphoblastic leukemia (ALL) patients from an institutional perspective.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!