Drug ID:Drug79
Drug Name:Mercaptopurine
CID:667490
DrugBank ID:DB01033
Modality:Small Molecule
Groups:approved
US Approved:YES
Other Approved:YES
Identifier: NCT02413047, , NCT00514982, , NCT03370601
Molecular Formula:C5H4N4S
Molecular Weight:152.18 g/mol
Isomeric SMILES:C1=NC2=C(N1)C(=S)N=CN2
Synonyms:6-Mercaptopurine; mercaptopurine; 50-44-2; Purinethol; Mercapurin; 6-Thiopurine; 7H-purine-6-thiol; Mercaleukin; Leukerin; Leupurin
Phase 0: 0
Phase 1: 26
Phase 2: 90
Phase 3: 87
Phase 4: 24
Description:An antimetabolite antineoplastic agent with immunosuppressant properties. It interferes with nucleic acid synthesis by inhibiting purine metabolism and is used, usually in combination with other drugs, in the treatment of or in remission maintenance programs for leukemia. [PubChem]

Molecular Structure

2D Molecular Structure

Knowledge Graph

dtIDCIDCompound NameGene IDGene NameSpeciesPubMed IDsAction
dt665 667490 Mercaptopurine 3251 HPRT1 Homo sapiens (human) 15354273 Inhibitor
dt666 667490 Mercaptopurine 3614 IMPDH1 Homo sapiens (human) 37713619 Inhibitor
dt667 667490 Mercaptopurine 5471 PPAT Homo sapiens (human) Inhibitor
dt668 667490 Mercaptopurine 3614 IMPDH1 Homo sapiens (human) Inhibitor
dt669 667490 Mercaptopurine 3615 IMPDH2 Homo sapiens (human) Inhibitor
dt670 667490 Mercaptopurine 316 AOX1 Homo sapiens (human) Substrate
dt671 667490 Mercaptopurine 7172 TPMT Homo sapiens (human) 15354273 Substrate
dt672 667490 Mercaptopurine 7498 XDH Homo sapiens (human) 15354273 Substrate
dt673 667490 Mercaptopurine 9376 SLC22A8 Homo sapiens (human) Substrate|Inhibitor
dt674 667490 Mercaptopurine 10257 ABCC4 Homo sapiens (human) 11447229 Substrate

  • No data available

Phase Distribution
Phase Description
  • Phase 0: Exploratory trials to assess drug behavior in humans
  • Phase 1: Safety trials to determine safe dosage range
  • Phase 2: Efficacy trials to evaluate therapeutic effects
  • Phase 3: Large-scale trials to confirm efficacy and safety
  • Phase 4: Post-marketing surveillance for long-term safety and efficacy

Trial IDTitlePhaseStatusSponsorIndicationsInterventions
NCT00514982 Medical Treatment of Colitis in Patients With Hermansky-Pudlak Syndrome PHASE2 WITHDRAWN National Institute of Allergy and Infectious Diseases (NIAID) Hermanski-Pudlak Syndrome|Colitis|Cytokines|Lymph… DRUG: Mesalamine|DRUG: Infliximab|DRUG: Corticost… Details
ISRCTN95420128 Subcutaneous CT-P13 monotherapy versus combination with immunomodulation when switching from intravenous infliximab in inflammatory bowel disease A multicentre, randomised withdrawal trial PHASE4 Recruiting Kings Health Partners Crohn's disease and ulcerative colitis Digestive… The intervention is the withdrawal of immunomodul… Details
EUCTR2019-002942-19-DK NORDTREAT_The Nordic IBD treatment strategy trial a randomized controlled trial of access to a protein profile_ PHASE4 Not Recruiting Region ebro l Crohn's disease and Ulcerative colitis MedDRA ve… Trade Name: Remicade Infliximab Pharmaceutical Fo… Details
ACTRN12613001347752 A randomized controlled trial of patients with IBD attending specialist clinics comparing de novo combination allopurinol and thiopurine versus thiopurine and placebo (ie standard practice) in terms of objective and clinical outcomes at six months PHASE3|PHASE4 Recruiting Eastern Health Inflammatory Bowel Disease; Inflammatory Bowel D… De novo combination therapy with allopurinol 100m… Details
ACTRN12612001107819 Febuxostat-thiopurine combination therapy in patients with moderately severe inflammatory bowel disease (IBD): a pilot study of a novel drug combination that may influence thiopurine bioavailability PHASE1 Not Recruiting Prof Tim Florin inflammatory bowel disease; inflammatory bowel d… To use the combination of febuxostat and 6-mercap… Details
ACTRN12611000363987 The Triple A (Adjunctive Allopurinol and Azathioprine) Study: Use of Ajunctive Allopurinol in Azathioprine/6-Mercaptopurine Non-responders to Optimize 6-Thioguanine Nucleotide Production and Improve Clinical Outcomes in Patients with Inflammatory Bowel Disease (IBD). PHASE3|PHASE4 Not Recruiting The Alfred Hospital Inflammatory Bowel Disease (IBD); Inflammatory B… Eligible IBD patients will be randomly allocated … Details
NL-OMON22783 Long term hepatotoxicity of azathioprine, 6-mercaptopurine and 6-thioguanine in inflammatory bowel disease. Not Available Not Recruiting Department of Gastroenterology and Hepatology, VU University Medical Center, Amsterdam, The Netherlands Inflammatory bowel disease, azathioprine, 6-merca… 1. Liver biopsy; 2. Venapuncture; 3. Abdominal … Details
NCT02413047 Evaluate if Response to Infliximab or Adalimumab May be Regained With an Immunomodulator None TERMINATED Indiana University Inflammatory Bowel Disease|Ulcerative Colitis|Cro… DRUG: Azathioprine|DRUG: 6 mercaptopurine|DRUG: M… Details
NCT02910245 Mercaptopurine Therapy in Ulcerative Colitis PHASE3 UNKNOWN Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA) Colitis, Ulcerative DRUG: Mercaptopurine (Purinethol)|DRUG: Placebo|D… Details
NCT00521950 Cost-effectiveness of TPMT Pharmacogenetics None COMPLETED ZonMw: The Netherlands Organisation for Health Research and Development Inflammatory Bowel Diseases|Crohn Disease|Ulcerat… GENETIC: TPMT genotyping; Drug: azathioprine or 6… Details
NCT03370601 Evaluation of the Clinical and Immunological Impact of Two Therapeutic Strategies in Chronic Inflammatory Diseases None TERMINATED University Hospital, Lille Inflammatory Bowel Diseases DRUG: Infliximab|DRUG: Mercaptopurine|DRUG: Azath… Details

Disease IDDisease NameDefinitionCategoryRelated DrugsMechanism
No data available

Strategy IDTherapeutic StrategySynonymsRelated DrugsMechanism
S02 Immunosuppression Classic immunosuppressive drugs azathioprine; 6-mercaptopurine; methotrexate; ciclosporin-A; tacrolimus Ciclosporin-A and tacrolimus bind to specific intracellular… Details

6-mercaptopurine metabolite levels in children with inflammatory bowel disease

PMID: 11698762
Year: 2001
Relationship Type: Association Score: 6.1

BACKGROUND: miR-143 and miR-145 are believed to function as colon cancer tumor suppressors, as they inhibit colon cancer cell growth and are downreg…

An open-label pilot study using thioguanine as a therapeutic alternative in Cro…

PMID: 11515842
Year: 2001
Relationship Type: Treatment Score: 6.1

Not found

Frequency of use and standards of care for the use of azathioprine and 6-mercap…

PMID: 11173323
Year: 2001
Relationship Type: Treatment Score: 6.1

Scid mice transplanted with CD4(+) T cells from congenic donor mice develop a chronic and lethal inflammatory bowel disease (IBD) 2-3 months post-t…

6-mercaptopurine or methotrexate added to prednisone induces and maintains remi…

PMID: 11111780
Year: 2000
Relationship Type: Treatment Score: 6.1

Hydrogen sulfide (H₂S) is a toxic gas that is now recognized as an important mediator of many physiological processes. In the colon, H₂S is produced…

Normal thiopurine methyltransferase levels do not eliminate 6-mercaptopurine or…

PMID: 10875470
Year: 2000
Relationship Type: Adverse Effect Score: 6.1

BACKGROUND: Calprotectin is released from neutrophils and monocytes, and increased calprotectin levels in stool may serve as a marker of intestinal …

Outcome of pregnancies when fathers are treated with 6-mercaptopurine for infla…

PMID: 10710057
Year: 2000
Relationship Type: Association Score: 6.1

BACKGROUND: A previous nationwide epidemiologic study of inflammatory bowel disease (IBD) in Iceland in 1950-79 showed a low but steadily rising inc…

Malignant neoplasms subsequent to treatment of inflammatory bowel disease with …

PMID: 10566724
Year: 1999
Relationship Type: Treatment Score: 6.1

Not found

Allergic reactions to 6-mercaptopurine during treatment of inflammatory bowel d…

PMID: 10372932
Year: 1999
Relationship Type: Treatment Score: 6.1

Crohn's disease (CD) and ulcerative colitis (UC) are inflammatory bowel diseases (IBD) of unknown etiology. Oral absorption studies have shown an in…

Shingles during the course of treatment with 6-mercaptopurine for inflammatory …

PMID: 10022640
Year: 1999
Relationship Type: Treatment Score: 6.1

Not found

6-Mercaptopurine metabolism in Crohn's disease: correlation with efficacy and t…

PMID: 8949645
Year: 1996
Relationship Type: Adverse Effect Score: 6.1

BACKGROUND: Tumor necrosis factor alpha (TNF alpha) and beta (TNF beta) appear to play an important role in the regulation of the inflammatory respo…

Combined use of cyclosporine and azathioprine or 6-mercaptopurine in pediatric …

PMID: 8708884
Year: 1996
Relationship Type: Association Score: 6.1

Human intestinal lamina propria T cells have a low expression of the CD45RA antigen and a high expression of the CD45RO antigen. This phenotype is …

6-Mercaptopurine and spermatogenesis in the young rat

PMID: 1935495
Year: 1991
Relationship Type: Association Score: 6.1

Cases of interest using affected sib-pair methods to distinguish between recessive and additive (dominant) modes of inheritance of a disease-predisp…

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