Dataset

Data from: Global methylation in relation to methotrexate-induced oral mucositis in children with acute lymphoblastic leukemia

Oosterom, N. (Creator), Griffioen, P. H. (Creator), den Hoed, M. A. H. (Creator), Pieters, R. (Creator), de Jonge, R. (Creator), Tissing, W. (Creator), van den Heuvel-Eibrink, M. M. (Creator), Heil, S. G. (Creator), University of Groningen, 17-Jul-2018

Dataset

  • Natanja Oosterom (Creator)
  • Pieter H. Griffioen (Creator)
  • Marissa A. H. den Hoed (Creator)
  • Rob Pieters (Creator)
  • Robert de Jonge (Creator)
  • Wim Tissing (Creator)
  • Marry M. van den Heuvel-Eibrink (Creator)
  • Sandra G. Heil (Creator)

Description

BACKGROUND
Children with acute lymphoblastic leukemia (ALL) often suffer from toxicity of chemotherapeutic drugs such as Methotrexate (MTX). Previously, we reported that 20% of patients receiving high-dose MTX developed oral mucositis. MTX inhibits folate metabolism, which is essential for DNA methylation. We hypothesize that MTX inhibits DNA methylation, which results into adverse effects. We studied DNA methylation markers during high-dose methotrexate treatment in pediatric acute lymphoblastic leukemia (ALL) in relation to developing oral mucositis.

MATERIALS & METHODS
S-Adenosyl-Methionine (SAM) and S-Adenosyl-Homocysteine (SAH) levels and LINE1 DNA methylation were measured prospectively before and after high-dose methotrexate (HD-MTX 4 x 5g/m2) therapy in 82 children with ALL. Methotrexate-induced oral mucositis was registered prospectively. Oral mucositis (grade ≥ 3 National Cancer Institute Criteria) was used as clinical endpoint.

RESULTS
SAM levels decreased significantly during methotrexate therapy (-16.1 nmol/L (-144.0 - +46.0), p<0.001), while SAH levels and the SAM:SAH ratio did not change significantly. LINE1 DNA methylation (+1.4% (-1.1 - +6.5), p<0.001) increased during therapy. SAM and SAH levels were not correlated to LINE1 DNA methylation status. No association was found between DNA methylation markers with developing oral mucositis.

CONCLUSIONS
This was the first study that assessed DNA methylation in relation to MTX-induced oral mucositis in children with ALL. Although global methylation markers did change during methotrexate therapy, methylation status was not associated with developing oral mucositis.
Date made available17-Jul-2018
PublisherUniversity of Groningen
Access to the dataset Open
Contact researchdata@rug.nl

    Keywords on Datasets

  • DNA methylation, LINE1, oral mucositis, methotrexate, acute lymphoblastic leukemia
Related Publications
  1. Global methylation in relation to methotrexate-induced oral mucositis in children with acute lymphoblastic leukemia

    Oosterom, N., Griffioen, P. H., den Hoed, M. A. H., Pieters, R., de Jonge, R., Tissing, W. J. E., van den Heuvel-Eibrink, M. M. & Heil, S. G., 9-Jul-2018, In : PLoS ONE. 13, 7, 10 p., 0199574.

    Research output: Contribution to journalArticleAcademicpeer-review

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ID: 66722498