MedPath

Mercaptopurine

Generic Name
Mercaptopurine
Brand Names
Purixan, Xaluprine (previously Mercaptopurine Nova Laboratories)
Drug Type
Small Molecule
Chemical Formula
C5H4N4S
CAS Number
50-44-2
Unique Ingredient Identifier
PKK6MUZ20G
Background

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.

Indication

For remission induction and maintenance therapy of acute lymphatic leukemia.

Associated Conditions
Acute Lymphoblastic Leukaemias (ALL), Acute Promyelocytic Leukemia, Autoimmune Hepatitis, Crohn's Disease (CD), Lymphoblastic Lymphoma, Ulcerative Colitis

FDA Approves Lilly's Omvoh (mirikizumab) for Crohn's Disease

• The FDA has approved Eli Lilly's Omvoh (mirikizumab-mrkz) for treating moderately to severely active Crohn's disease in adults, expanding its use for inflammatory bowel disease. • The approval was based on the VIVID-1 trial, which showed significant clinical remission and endoscopic response rates compared to placebo after one year of treatment. • Omvoh is the first biologic in over 15 years with Phase 3 two-year efficacy data at launch, demonstrating long-term disease control and visible healing of the intestinal lining. • Lilly has submitted marketing applications globally, aiming to provide a new treatment option for Crohn's patients and is working with insurers to enable patient access.

Inotuzumab Ozogamicin Approved for Pediatric Relapsed/Refractory B-Cell ALL

• The FDA has approved inotuzumab ozogamicin for pediatric patients aged 1 year and older with relapsed or refractory (R/R) CD22-positive B-cell acute lymphoblastic leukemia (ALL). • Clinical trials demonstrated that inotuzumab ozogamicin achieved complete remission (CR) in a significant proportion of patients, with high rates of minimal residual disease (MRD) negativity. • Inotuzumab ozogamicin, a CD22-directed antibody-drug conjugate, offers a targeted treatment option for pediatric R/R B-cell ALL, addressing a critical unmet need. • Studies suggest that a dose of 1.8 mg/m2 per cycle is effective and tolerable in pediatric patients, with manageable adverse events like thrombocytopenia and neutropenia.

Half-Dose Glucarpidase Effective in Reducing Toxic Methotrexate Levels

• A study demonstrates that half-dose glucarpidase effectively lowers methotrexate (MTX) levels in patients with high-dose MTX-associated acute kidney injury. • MTX plasma concentrations decreased by ≥ 97.7% within one day after half-dose glucarpidase injection, facilitating management with intensified folinic acid rescue. • The findings suggest that reduced glucarpidase doses could decrease the financial burden of MTX toxicity treatment without compromising efficacy. • Researchers advocate for dose-finding studies to optimize glucarpidase dosing based on pharmacokinetic analysis and clinical outcomes.
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