Evidence map›Paper›PMID 10764140›Full record

ReviewLeukemia2000

Genetic polymorphism of thiopurine methyltransferase and its clinical relevance for childhood acute lymphoblastic leukemia.

H L McLeod, E Y Krynetski, M V Relling, W E Evans

Registry-linked trialAbstract readReview
PubMed Publisher
In one paragraph

Review in Leukemia, 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00590941 (Candidate Gene Polymorphisms and Response to Rituximab-CHOP in Patients With Diffuse Large Cell Lymphoma), which is not on this map. Cited by 102 papers.

0numbers the graph read from it
0cells of the map it votes in
102citing papers in PubMed
34.8field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT00590941 nacompletednot on this mapstarted 2005, after this paper: background citation

Candidate Gene Polymorphisms and Response to Rituximab-CHOP in Patients With Diffuse Large Cell Lymphoma

TypeinterventionalSponsorWashington University School of MedicineRan2005 to 2011Enrolled52ConditionsLymphoma, Diffuse Large CellArmsBlood draw
3 · Its place in the literature

Who cites it

102 citing papers in PubMed, 438 citations in OpenAlex.

  1. Trial
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  3. Article
  4. Article
  5. Review
  6. Review
  7. Article
  8. Impact of the loss of slc43a3 on 6-mercaptopurine absorption and tissue distribution in mice.Drug metabolism and disposition: the biological fate of chemicals · 2025
    Article
  9. Article
  10. Population-Specific Distribution ofTherapeutics and clinical risk management · 2023
    Article
  11. Article
  12. Pharmacogenomics in Children.Methods in molecular biology (Clifton, N.J.) · 2022
    Article
  13. The application of "Omics" to accelerate precision medicine in Supportive Care in Cancer.Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer · 2021
    Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. Review

42 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 2 countries.

H L McLeodDepartment of Medicine and Therapeutics, Institute of Medical Sciences, University of Aberdeen, Foresterhill, UK.
E Y Krynetski
M V Relling
W E Evans
St. Jude Children's Research Hospital · USUniversity of Aberdeen · GB

Funding

PHARMACOGENOMICS OF CHILDHOOD LEUKEMIA (ALL)R37CA036401 · NCI · ST. JUDE CHILDREN'S RESEARCH HOSPITAL · PI EVANS, WILLIAM E · 1987 to 2014
$9.7M
P450 METABOLISM OF EPIPODOPHYLLOTOXINS IN CHILDRENR01CA051001 · NCI · ST. JUDE CHILDREN'S RESEARCH HOSPITAL · PI RELLING, MARY V. · 1996 to 2006
$2.7M
NCI NIH HHS CAZ1765NCI NIH HHS R01 CA51001NCI NIH HHS R37 CA 36401
6 · The paper itself

Abstract

Thiopurine methyltransferase (TPMT) catalyses the S-methylation of thiopurines, including 6-mercaptopurine and 6-thioguanine. TPMT activity exhibits genetic polymorphism, with about 1/300 inheriting TPMT deficiency as an autosomal recessive trait. If treated with standard doses of thiopurines, TPMTdeficient patients accumulate excessive thioguanine nucleotides in hematopoietic tissues, leading to severe hematological toxicity that can be fatal. However, TPMT-deficient patients can be successfully treated with a 10- to 15-fold lower dosage of these medications. The molecular basis for altered TPMT activity has been defined, with rapid and inexpensive assays available for the three signature mutations which account for the majority of mutant alleles. TPMT genotype correlates well with in vivo enzyme activity within erythrocytes and leukemic blast cells and is clearly associated with risk of toxicity. The impact of 6-mercaptopurine dose intensity is also being clarified as an important determinate of event-free survival in childhood leukemia. In addition, there are emerging data that TPMT genotype may influence the risk of secondary malignancies, including brain tumors and acute myelogenous leukemia. Ongoing studies aim to clarify the influence of TPMT on thiopurine efficacy, acute toxicity, and risk for delayed toxicity. Together, these advances hold the promise of improving the safety and efficacy of thiopurine therapy.

Indexed as

Polymorphism, GeneticAntimetabolites, AntineoplasticAsiaBlack PeopleChildChild, PreschoolCodonDisease-Free SurvivalDrug Resistance, NeoplasmEnglandEthnicityFranceGene FrequencyGenotypeHumansInactivation, MetabolicAntimetabolites, AntineoplasticCodonMercaptopurineMethyltransferasesNeoplasm ProteinsRecombinant Fusion Proteinsthiopurine methyltransferase

Identifiers

PMID10764140
OpenAlexW2335253526

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.