Evidence map›Paper›PMID 26590936›Full record

ArticleJournal of gastroenterology2016

NUDT15 R139C-related thiopurine leukocytopenia is mediated by 6-thioguanine nucleotide-independent mechanism in Japanese patients with inflammatory bowel disease.

Ayumi Asada, Atsushi Nishida, Makoto Shioya, Hirotsugu Imaeda, Osamu Inatomi, Shigeki Bamba, Katsuyuki Kito, Mitsushige Sugimoto, Akira Andoh

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In one paragraph

Article in Journal of gastroenterology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
55citing papers in PubMed, 5 pooled it
10.3field-weighted citation impact, top 2% 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

55 citing papers in PubMed, 5 syntheses or guidelines pooled it, 96 citations in OpenAlex.

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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

9 authors at 1 institution in 1 country.

Ayumi AsadaDepartment of Medicine, Shiga University of Medical Science, Seta-Tukinowa, Otsu, 520-2192, Japan.
Atsushi NishidaDepartment of Medicine, Shiga University of Medical Science, Seta-Tukinowa, Otsu, 520-2192, Japan.
Makoto ShioyaDepartment of Medicine, Shiga University of Medical Science, Seta-Tukinowa, Otsu, 520-2192, Japan.
Hirotsugu ImaedaDepartment of Medicine, Shiga University of Medical Science, Seta-Tukinowa, Otsu, 520-2192, Japan.
Osamu InatomiDepartment of Medicine, Shiga University of Medical Science, Seta-Tukinowa, Otsu, 520-2192, Japan.
Shigeki BambaDepartment of Medicine, Shiga University of Medical Science, Seta-Tukinowa, Otsu, 520-2192, Japan.
Katsuyuki KitoDepartment of Medicine, Shiga University of Medical Science, Seta-Tukinowa, Otsu, 520-2192, Japan.
Mitsushige SugimotoDepartment of Medicine, Shiga University of Medical Science, Seta-Tukinowa, Otsu, 520-2192, Japan.
Akira AndohDepartment of Medicine, Shiga University of Medical Science, Seta-Tukinowa, Otsu, 520-2192, Japan. andoh@belle.shiga-med.ac.jp.
Shiga University of Medical Science · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundNUDT15 R139C (rs116855232) is a recently identified genetic factor responsible for thiopurine-induced leukocytopenia and hair loss. In this study, we investigated the association of NUDT15 R139C with 6-thioguanine nucleotide (6-TGN) levels and thiopurine-induced leukocytopenia in Japanese patients with inflammatory bowel disease (IBD).

methodsTwo hundred and sixty-four subjects (103 healthy volunteers and 161 IBD patients treated with thiopurines) were enrolled. Genotyping for NUDT15 R139C was performed using Custom TaqMan® SNP genotyping assays.

resultsThe NUDT15 C/C, C/T, and T/T genotypes were 80.7, 18.2, and 1.1 %, respectively. The allelic frequency was 10.2 %. Among 161 IBD patients, there was no significant difference in 6-TGN levels among the NUDT15 genotypes. Forty-five patients (27.9 %) developed leukocytopenia (WBC <3000/μl), and the C/T and T/T genotypes were significantly associated with the development of leukocytopenia (P = 1.7 × 10(-5)). In these patients, 6-TGN levels were not significantly different between NUDT15 genotypes. NUDT15 R139C was significantly associated with early (<8 weeks) (P = 1.03 × 10(-4)) and late (>8 weeks) leukocytopenia (P = 4.3 × 10(-4)). The decrease in WBC count at 2 and 4 weeks was significantly higher in patients with the C/T or T/T genotypes as compared to the patients with the C/C genotype. All patients with the T/T genotype (n = 2) developed early severe hair loss and severe leukocytopenia (<1000/μl). The logistic regression analysis revealed that NUDT15 R139C was the sole genetic factor responsible for the thiopurine-induced leukocytopenia (P = 0.001).

conclusionsThese results suggest that NUDT15 R139C-related thiopurine-induced leukocytopenia is mediated by a 6-TGN-independent mechanism.

Indexed as

AdultAlopeciaCase-Control StudiesFemaleGene FrequencyGenetic Predisposition to DiseaseGuanine NucleotidesHumansInflammatory Bowel DiseasesLeukocyte CountLeukopeniaMaleMercaptopurineMiddle AgedNudix HydrolasesPyrophosphatases6-thioguanylic acidGuanine NucleotidesMercaptopurineNudix HydrolasesNUDT15 protein, humanPyrophosphatasesThionucleotides6-MercaptopurineAzathioprineIBDNUDT15

Identifiers

PMID26590936
OpenAlexW2225153305

What OpenQuestion holds

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Registered trials

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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.