ArticleAnnals of laboratory medicine2021
Quantification of Thioguanine in DNA Using Liquid Chromatography-Tandem Mass Spectrometry for Routine Thiopurine Drug Monitoring in Patients With Pediatric Acute Lymphoblastic Leukemia.
Article in Annals of laboratory medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.
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Who cites it
8 citing papers in PubMed, 1 synthesis or guideline pooled it, 14 citations in OpenAlex.
- Innovating Thiopurine Therapeutic Drug Monitoring: A Systematic Review and Meta-Analysis on DNA-Thioguanine Nucleotides (DNA-TG) as an Inclusive Biomarker in Thiopurine Therapy.Clinical pharmacokinetics · 2024Pooled it
- DNA-thioguanine nucleotide as a treatment marker in acute lymphoblastic leukemia patients with NUDT15 variant genotypes.PloS one · 2021Trial
- Personalized Therapy with Mercaptopurine in Acute Lymphoblastic Leukemia: Current Advances and Challenges.Current treatment options in oncology · 2026Review
- LC-MS/MS quantification of 6-methylthio-2'-deoxyguanosine and 6-thio-2'-deoxyguanosine in genomic DNA with enzymatically synthesized isotope-labelled internal standards.Analytical and bioanalytical chemistry · 2026Article
- Azathioprine Metabolites in Erythrocytes and DNA for Therapy Monitoring in Very Early Onset Inflammatory Bowel Disease Pediatric Patients.ACS pharmacology & translational science · 2025Article
- Simultaneous Measurement and Distribution Analysis of Urinary Nicotine, Cotinine, Trans-3'-Hydroxycotinine, Nornicotine, Anabasine, and Total Nicotine Equivalents in a Large Korean Population.Molecules (Basel, Switzerland) · 2023Article
- Evaluation of Vancomycin Area Under the Concentration-Time Curve Predictive Performance Using Bayesian Modeling Software With and Without Peak Concentration: An Academic Hospital Experience for Adult Patients Without Renal Impairment.Annals of laboratory medicine · 2023Article
- Comprehensive Evaluation of the NeoBase 2 Non-derivatized MSMS Assay and Exploration of Analytes With Significantly Different Concentrations Between Term and Preterm Neonates.Annals of laboratory medicine · 2023Article
Corrections and comments
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Authors and funding
10 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundWe developed an assay to measure DNA-incorporated 6-thioguanine (DNA-TG) and validated its clinical applicability in Korean pediatric patients with acute lymphoblastic leukemia (ALL) in order to improve individualized thiopurine treatment and reduce the life-threatening cytotoxicity.
methodsThe DNA-TG assay was developed based on liquid chromatography-tandem mass spectrometry, with isotope-labeled TG-d3 and guanine-d3 as internal standards. This method was applied to 257 samples of pediatric ALL patients. The DNA-TG level was compared with erythrocyte TG nucleotide (RBC-TGN) level in relation to the
resultsFor DNA-TG quantification, a linearity range of 10.0-5,000.0 fmol TG/μg DNA; bias for accuracy of -10.4% -3.5%; coefficient of variation for intra- and inter-day precision of 3.4% and 5.8% at 80 fmol TG/μg DNA and of 4.9% and 5.3% at 800 fmol TG/μg DNA, respectively; and recovery of 85.7%-116.2% were achieved without matrix effects or carry-over. The median DNA-TG level in the 257 samples was 106.0 fmol TG/μg DNA (interquartile range, 75.8-150.9). There was a strong correlation between DNA-TG and RBC-TGN levels (ρ=0.68,
conclusionsThis simple and sensitive method for measuring DNA-TG level can improve therapeutic drug monitoring for thiopurine treatment.
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