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Published on: November 8, 2015
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Predictive factors for delayed high-dose methotrexate elimination: A practical issue for diffuse large B-cell
Margot Vattaire-Hervé1, Antoine Le Bozec2, Justine Clarenne3
1Department of Pharmacy, CHU Reims, F-51100, Reims, France.
Summary
This study investigated serum albumin as a predictor for delayed high-dose methotrexate elimination in diffuse large B-cell lymphoma patients. Results indicate male sex and larger body surface area are associated with delayed clearance, not albumin levels.
Area of Science:
- Oncology
- Pharmacology
- Clinical Medicine
Background:
- High-dose methotrexate (HD-MTX) is crucial for central nervous system (CNS) prophylaxis and treatment in diffuse large B-cell lymphoma (DLBCL).
- Delayed elimination of HD-MTX can cause severe toxicity, necessitating predictive markers for patient management.
- Serum albumin has been proposed as a potential biomarker to predict HD-MTX clearance.
Purpose of the Study:
- To evaluate the utility of serum albumin levels as a predictive factor for delayed HD-MTX elimination in DLBCL patients.
- To identify demographic and clinical factors associated with delayed HD-MTX clearance.
Main Methods:
- Retrospective bicentric study of DLBCL patients receiving HD-MTX between June 2016 and December 2023.
- Inclusion criteria: age >18, DLBCL diagnosis, pre-HD-MTX serum albumin, and plasma methotrexate monitoring.
- Univariate and multivariate analyses were performed to compare patients with and without delayed elimination.
Main Results:
- Fifteen out of 68 patients experienced delayed HD-MTX elimination.
- Male sex and body surface area (BSA) ≥ 2 m² were significantly associated with delayed clearance (p=0.01 and p=0.05, respectively).
- Serum albumin levels were not significantly associated with delayed HD-MTX elimination (p=0.8); hypoalbuminemia cases received lower MTX doses.
Conclusions:
- Biometric factors, particularly male sex and BSA, are primarily associated with delayed HD-MTX elimination.
- The role of serum albumin in predicting delayed HD-MTX elimination remains uncertain, influenced by dose adjustments in hypoalbuminemic patients.
- Future research should consider inflammatory, nutritional markers, and prealbumin to better predict HD-MTX toxicity.
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