THPM2
MCID: THP005
MIFTS: 17

Thiopurines, Poor Metabolism of, 2 (THPM2)

Categories: Blood diseases, Bone diseases, Cancer diseases, Genetic diseases, Immune diseases, Metabolic diseases

Aliases & Classifications for Thiopurines, Poor Metabolism of, 2

MalaCards integrated aliases for Thiopurines, Poor Metabolism of, 2:

Name: Thiopurines, Poor Metabolism of, 2 57 29 6
Nudt15 Deficiency 57
Thpm2 57

Characteristics:

OMIM:

57
Inheritance:
autosomal dominant

Miscellaneous:
increased susceptibility to toxic effects of treatment with thiopurines
nudt15 genetic variation is over represented in asians
some haplotypes confer more sensitivity to mercaptopurine than others
homozygous carriers can tolerate <10% of the standard dosage


HPO:

32
thiopurines, poor metabolism of, 2:
Inheritance autosomal dominant inheritance


Classifications:



External Ids:

MedGen 42 C4225160

Summaries for Thiopurines, Poor Metabolism of, 2

OMIM : 57 THPM2 is associated with severe hematopoietic toxicity when patients are treated with standard doses of thiopurines, a class of antineoplastic/immunosuppressant agents that consists of mercaptopurine, thioguanine, and azathioprine. Thiopurines are prodrugs that require extensive metabolism in order to exert their cytotoxic action. Thiopurines are converted into cytotoxic thioguanine nucleotides (TG), which are incorporated into DNA and cause cell death. NUDT15 inactivates thiopurine metabolites and negatively regulates cytotoxicity (summary by Moriyama et al., 2016). The NUDT15 deficiency trait follows an additive genetic mode of inheritance, with the severity of the phenotype proportional to the cumulative number of risk alleles in NUDT15. For a discussion of genetic heterogeneity of poor thiopurine metabolism, see THPM1 (610460). (616903)

MalaCards based summary : Thiopurines, Poor Metabolism of, 2, is also known as nudt15 deficiency. An important gene associated with Thiopurines, Poor Metabolism of, 2 is NUDT15 (Nudix Hydrolase 15).

Wikipedia : 75 Nudix hydrolase 15 is a protein that in humans is encoded by the NUDT15... more...

Related Diseases for Thiopurines, Poor Metabolism of, 2

Diseases in the Thiopurines, Poor Metabolism of, 1 family:

Thiopurines, Poor Metabolism of, 2

Symptoms & Phenotypes for Thiopurines, Poor Metabolism of, 2

Symptoms via clinical synopsis from OMIM:

57
Hematology:
myelosuppression develops on standard doses of thiopurine drugs
hematopoietic toxicity develops on standard doses of thiopurine drugs

Laboratory Abnormalities:
decreased metabolism of thiopurine drugs
increased toxic thioguanine nucleotides (tgns) on standard doses of thiopurine drugs
decreased activity of nudt15

Clinical features from OMIM:

616903

Drugs & Therapeutics for Thiopurines, Poor Metabolism of, 2

Search Clinical Trials , NIH Clinical Center for Thiopurines, Poor Metabolism of, 2

Genetic Tests for Thiopurines, Poor Metabolism of, 2

Genetic tests related to Thiopurines, Poor Metabolism of, 2:

# Genetic test Affiliating Genes
1 Thiopurines, Poor Metabolism of, 2 29 NUDT15

Anatomical Context for Thiopurines, Poor Metabolism of, 2

Publications for Thiopurines, Poor Metabolism of, 2

Articles related to Thiopurines, Poor Metabolism of, 2:

# Title Authors PMID Year
1
NUDT15 polymorphisms alter thiopurine metabolism and hematopoietic toxicity. 8 71
26878724 2016
2
A common missense variant in NUDT15 confers susceptibility to thiopurine-induced leukopenia. 8 71
25108385 2014
3
The effects of inherited NUDT15 polymorphisms on thiopurine active metabolites in Japanese children with acute lymphoblastic leukemia. 38
28445187 2017

Variations for Thiopurines, Poor Metabolism of, 2

ClinVar genetic disease variations for Thiopurines, Poor Metabolism of, 2:

6
# Gene Variation Type Significance SNP ID GRCh37 Pos GRCh38 Pos
1 NUDT15 NM_018283.4(NUDT15): c.415C> T (p.Arg139Cys) single nucleotide variant drug response rs116855232 13:48619855-48619855 13:48045719-48045719
2 NUDT15 NM_018283.4(NUDT15): c.416G> A (p.Arg139His) single nucleotide variant drug response rs147390019 13:48619856-48619856 13:48045720-48045720
3 NUDT15 NM_018283.4(NUDT15): c.52G> A (p.Val18Ile) single nucleotide variant drug response rs186364861 13:48611934-48611934 13:48037798-48037798
4 NUDT15 NM_018283.4(NUDT15): c.38_43GAGTCG[4] (p.13_14GV[4]) short repeat drug response rs746071566 13:48611932-48611937 13:48037796-48037801

Expression for Thiopurines, Poor Metabolism of, 2

Search GEO for disease gene expression data for Thiopurines, Poor Metabolism of, 2.

Pathways for Thiopurines, Poor Metabolism of, 2

GO Terms for Thiopurines, Poor Metabolism of, 2

Sources for Thiopurines, Poor Metabolism of, 2

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73 UMLS via Orphanet
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