Abstract
Purpose
Pediatric acute lymphoblastic leukemia (pALL) patients have better overall survival and methotrexate (MTX) is an effective drug used in their treatment. However, the treatment-related adverse effects (TRAEs) have a bigger impact on the therapy. In this study, we have evaluated the association of polymorphisms in genes encoding proteins engaged in MTX metabolism, and the cytogenetic aberrations with TRAEs.
Methods
A total of 115 patients between the age of 1 and 18 years (average: 6.6) under maintenance therapy were selected for the study. SLC19A1 (c.80G > A), MTHFR (c.677C > T; c.1298A > C), and TYMS (c.*450_*455del) genotypes were determined using PCR techniques and Sanger sequencing. Cytogenetic and SNP findings were analyzed for any association with the reported toxicities using odds ratio, chi-square test, multifactor dimensionality reduction (MDR) analysis for synergistic effect and, multinomial logistic regression analysis for the likelihood of adverse events.
Results
Among the evaluated genetic variations, SLC19A1 (c.80G > A) was significantly associated with TRAEs (OR = 5.71, p = 0.002). Multinomial logistic regression analysis (chi-sq = 16.64, p < 0.001) and MDR analysis (chi-sq = 10.51 p < 0.001) confirmed the finding. On the other hand, no significant association was observed between adverse events and any specific cytogenetic aberration.
Conclusion
SLC19A1 facilitates the import of cyclic dinucleotides and reduced folates, evaluating genotypes in this gene can help in better management of patients on methotrexate treatment. Assessing a broader gene panel can help in finding more associated markers and delivering personalized medicine to the patients.
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Data availability
All data generated or analyzed during this study are included in this published article (and its additional files).
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Acknowledgements
The authors acknowledge all the patients and their parents who participated in the study. The authors would like to thank the support of Sri Ramachandra Institute of Higher Education and Research (SRIHER) and Kanchi Kamakoti Child Trust Hospital (KKCTH), Chennai, India. The authors also want to thank the Council of Scientific and Industrial Research and the Department of Biotechnology for their fundings.
Funding
This work was supported by Council of Scientific and Industrial Research, Government of India (File. No. 08/447(0001)/2019-EMR-I) and Department of Biotechnology, Government of India (Sanction Order No. 6242-P57/RGCB/PMD/DBT/HPKR/2015).
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The study was approved by Institutional ethics committee (internal code IEC-NI/17/JUN/60/70) and performed according to the international regulations in Good Clinical Practices and to the ethical principles of the Declaration of Helsinki. Written informed consent was obtained from all the patients or parents/guardians whichever is applicable.
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Ramalingam, R., Kaur, H., Scott, J.X. et al. Evaluation of cytogenetic and molecular markers with MTX-mediated toxicity in pediatric acute lymphoblastic leukemia patients. Cancer Chemother Pharmacol 89, 393–400 (2022). https://doi.org/10.1007/s00280-022-04405-7
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DOI: https://doi.org/10.1007/s00280-022-04405-7