PREVALENCE OF NUDT15 VARIANTS IN ACUTE LYPHOBLASTIC LEUKEMIA AT CHILDREN’S HOSPITAL 2
Main Article Content
Abstract
Objects: The nucleoside diphosphate-linked moiety X-type motif 15 genes were high frequency of NUDT15 variants in Asian and affected the metabolism of 6-mercaptopurine, a prolonged backbone of acute lymphoblastic leukemia treatment (ALL). The patients with NUDT15 variants failured in 6-MP metabolism, leading to increased mortality risk. Aims: This study reports the frequency of NUDT15 variants in children with ALL at Children’s Hospital 2. Methods: A total of 220 patients with ALL were identified NUDT15 variants on exon 1 and exon 3 in chromosome 13 by Sanger sequencing. Results: We identified five variants of NUDT15, including *1, *2, *3, *5, *6 (87%; 2,7%; 6,9%; 0,9% và 2,5%; respectively). We didn’t identify *4 in our study. The NUDT15 genotyping showed 25% of patients with NUDT15 variants: heterozygous (24.1%) and homozygous/compound heterozygous (0.9%). Conclusion: NUDT15 variants were presented in one-fourth of the participants. To the personalized medicine of 6-MP, testing for NUDT15 polymorphisms prior to therapy is warranted.
Article Details
Keywords
NUDT15, variant, 6-mercaptopurine, acute lymphoblastic leukemia
References
2. Cooper, S.L. and Brown, P.A. (2015), “Treatment of pediatric acute lymphoblastic leukemia. ”, Pediatr Clin North Am (62), 61-73
3. Horton, T.M. and Steuber, C.P. (2018), “Overview of the presentation and diagnosis of acute lymphoblastic leukemia in children and adolescents”, Uptodate.
4. Moriyamaa, T., Nishiia, R., Lina, T.N., et al. (2017), “The Effects of Inherited NUDT15 Polymorphisms on Thiopurine Active Metabolites in Japanese Children with Acute Lymphoblastic Leukemia”, Pharmacogenet Genomics, 27(6), 236–239.
5. Puangpetch, A., Tiyasirichokchai, R., Pakakasama, S., et al. (2020), “NUDT15 genetic variants are related to thiopurine-induced neutropenia in Thai children with acute lymphoblastic leukemia”, Pharmacogenomics, 21(6), 403-410.
6. Ravindranath Y. (2003), “Recent advances in pediatric acute lymphoblastic and myeloid leukemia”, Curr Opin Oncol (15), 23-35.
7. Yang, J.J., Landier, W., and Yang, W. (2015), “Inherited NUDT15 Variant Is a Genetic Determinant of Mercaptopurine Intolerance in Children With Acute Lymphoblastic Leukemia”, Journal Clinical Oncology (33), 1235-1242.
8. Yu, C.-H., Chang, Y.-H., Wang, D.-S., et al. (2020), “Determination of NUDT15 variants by targeted sequencing can identify compound heterozygosity in pediatric acute lymphoblastic leukemia patients”, Scientific Reports, 10(1), 14400.