Volume 69, Issue 11 e29940
ONCOLOGY: BRIEF REPORT

Safety analysis of high-dose methotrexate in pediatric non-Hodgkin lymphomas

M. Brooke Bernhardt

Corresponding Author

M. Brooke Bernhardt

Department of Pediatrics, Section of Hematology/Oncology, Baylor College of Medicine, Houston, Texas, USA

Texas Children's Hospital, Texas Children's Cancer and Hematology Centers, Houston, Texas, USA

Correspondence

M. Brooke Bernhardt, Department of Pediatrics, Section of Hematology/Oncology, Baylor College of Medicine, 6621 Fannin Street, Aber 170, Houston, TX 77030, USA.

Email: [email protected]

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Austin L. Brown

Austin L. Brown

Department of Pediatrics, Section of Hematology/Oncology, Baylor College of Medicine, Houston, Texas, USA

Texas Children's Hospital, Texas Children's Cancer and Hematology Centers, Houston, Texas, USA

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Austyn T. Grim

Austyn T. Grim

Texas Children's Hospital, Texas Children's Cancer and Hematology Centers, Houston, Texas, USA

Texas Children's Hospital, Department of Pharmacy, Houston, Texas, USA

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Michael E. Scheurer

Michael E. Scheurer

Department of Pediatrics, Section of Hematology/Oncology, Baylor College of Medicine, Houston, Texas, USA

Texas Children's Hospital, Texas Children's Cancer and Hematology Centers, Houston, Texas, USA

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Nader Kim El-Mallawany

Nader Kim El-Mallawany

Department of Pediatrics, Section of Hematology/Oncology, Baylor College of Medicine, Houston, Texas, USA

Texas Children's Hospital, Texas Children's Cancer and Hematology Centers, Houston, Texas, USA

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Nmazuo W. Ozuah

Nmazuo W. Ozuah

Department of Pediatrics, Section of Hematology/Oncology, Baylor College of Medicine, Houston, Texas, USA

Texas Children's Hospital, Texas Children's Cancer and Hematology Centers, Houston, Texas, USA

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First published: 07 September 2022

Abstract

High-dose methotrexate (HD-MTX) with rigorous supportive care is essential to the treatment of pediatric non-Hodgkin lymphomas (NHL). We describe the safety and tolerability of HD-MTX in patients with NHL treated at our center. In our cohort of 46 patients, the majority had at least one course of delayed clearance and/or creatinine elevation. Additionally, more than one-third of patients experienced an episode of grade ≥3 mucositis. Creatinine elevations and delayed clearance were independently associated with subsequent grade ≥3 mucositis. We advocate for greater availability of methotrexate monitoring to allow dose escalation of this essential modality around the world.

CONFLICT OF INTEREST

Dr. Bernhardt has received research support and has served on an advisory board for BTG International, both unrelated to this work. All other authors have no conflict of interest.

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