Related Experiment Video
Updated: Mar 13, 2026

Human Pluripotent Stem Cell Based Developmental Toxicity Assays for Chemical Safety Screening and Systems Biology Data Generation
Published on: June 17, 2015
Methotrexate hypersensitivity reactions in pediatrics: Evaluation and management
Meredith A Dilley1,2, Joyce P Lee1, Ana Dioun Broyles1,2
1Division of Immunology at Boston Children's Hospital, Boston, Massachusetts.
Hypersensitivity reactions to methotrexate (MTX) are rare. This study found skin testing, graded challenge, and desensitization safe and effective for evaluating and managing pediatric patients with MTX hypersensitivity.
Area of Science:
- Pediatric Allergy and Immunology
- Clinical Pharmacology
- Immunology
Background:
- Hypersensitivity reactions (HSRs) to methotrexate (MTX) are infrequently reported, often limited to case studies.
- Evaluating and managing MTX HSRs in pediatric populations requires specific diagnostic and therapeutic strategies.
Purpose of the Study:
- To retrospectively review hypersensitivity reactions to methotrexate (MTX) in a pediatric tertiary care center.
- To assess the safety and efficacy of diagnostic and therapeutic interventions for MTX HSRs in children.
Main Methods:
- Retrospective review of pediatric patients evaluated for MTX HSRs over a 12-year period.
- Inclusion of diagnostic procedures such as skin testing and graded challenges.
- Documentation of desensitization procedures for patients with confirmed MTX hypersensitivity.
Main Results:
- Seven pediatric patients were evaluated for MTX HSRs.
- Skin testing yielded positive results in one of four tested patients.
- One patient successfully underwent a graded challenge, and 17 desensitizations were successfully performed in six patients.
Conclusions:
- Skin testing, graded challenge, and desensitization are safe and effective procedures for the evaluation and management of MTX HSRs in pediatric patients.
- These interventions can help identify and manage hypersensitivity reactions, allowing continued MTX therapy when necessary.
More Related Videos
08:38Quantification of the Immunosuppressant Tacrolimus on Dried Blood Spots Using LC-MS/MS
Published on: November 8, 2015
06:08Assessment of Chimeric Antigen Receptor T Cell-Associated Toxicities Using an Acute Lymphoblastic Leukemia Patient-Derived Xenograft Mouse Model
Published on: February 10, 2023
Related Concept Videos
Therapeutic Drug Monitoring: Affecting Factors
Pharmacokinetics in Pediatric Patients: Drug Excretion
Pharmacokinetics in Pediatric Patients: Drug Metabolism
Drug Toxicity: Allergic Reactions
Hypersensitivities
Types of Hypersensitivities
Hypersensitivity reactions are categorized into four types: Type 1, Type 2, Type 3, and Type 4. Each type has a distinct mechanism...
Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase