Evidence map›Paper›PMID 32482022›Full record

ReviewIntestinal research2020

NUDT15 gene variants and thiopurine-induced leukopenia in patients with inflammatory bowel disease.

Katsuyoshi Matsuoka

Open access · diamondAbstract readReview
In one paragraph

Review in Intestinal research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
5.2field-weighted citation impact, top 4% 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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

23 citing papers in PubMed, 1 synthesis or guideline pooled it, 38 citations in OpenAlex.

  1. Guideline
  2. Article
  3. Recent advances in the management of small bowel Crohn's disease.The Korean journal of internal medicine · 2026
    Review
  4. Article
  5. Article
  6. Higher prevalence ofFrontiers in pharmacology · 2025
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. [Treatment of Autoimmune Hepatitis].The Korean journal of gastroenterology = Taehan Sohwagi Hakhoe chi · 2023
    Review
  12. Molecular medicine-based IBD treatment strategies-we take it personally!Frontiers in gastroenterology (Lausanne, Switzerland) · 2023
    Review
  13. Article
  14. Review
  15. Personalized medicine to implementation science: Thiopurines set for the leap.JGH open : an open access journal of gastroenterology and hepatology · 2022
    Article
  16. Review
  17. Review
  18. Review
  19. Article
  20. Article
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

1 author at 1 institution in 1 country.

Katsuyoshi MatsuokaDivision of Gastroenterology and Hepatology, Department of Internal Medicine, Toho University Sakura Medical Center, Sakura, Japan.
Toho University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Thiopurine has been used to maintain remission and to reduce antidrug antibody formation in monoclonal antibody therapy in patients with inflammatory bowel disease (IBD). The use of thiopurine is limited by side effects such as leukopenia. Thiopurine S-methyltransferase (TPMT) variants are associated with thiopurine-induced leukopenia in Westerners, but the frequency of the risk alleles is low in Asians. Recently, a variant in the nudix hydrolase 15 (NUDT15) gene (R139C, c.415C > T) was reported to be associated with early severe leukopenia in Asians. NUDT15 is an enzyme that converts 6-thio-(deoxy)guanosine triphosphate (6-T(d)GTP) to 6-thio-(deoxy)guanosine monophosphate (6-T(d)GMTP). The R139C variant impairs the stability of the protein and increases incorporation of 6-TGTP and 6-TdGTP into RNA and DNA, respectively, resulting in leukopenia. The frequency of C/C, C/T, and T/T are approximately 80%, 20%, and 1%, respectively in East Asians. Early leukopenia occurred in less than 3% of patients with C/C and in around 20% of those with C/T, whereas it occurred in almost all patients with T/T. Patients homozygous for this variant also develop severe hair loss. The measurement of NUDT15 R139C can increase the safety of thiopurine dramatically and is a successful example of personalized medicine in the field of IBD.

Indexed as

6-MercaptopurineAzathioprineNUDT15Thiopurine

Identifiers

PMID32482022
PMCPMC7385579
OpenAlexW3029081290

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

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.