Drug General Information (ID: DDI3D8NMKV)
  Drug Name Mercaptopurine Drug Info Idelalisib Drug Info
  Drug Type Small molecule Small molecule
  Therapeutic Class Antineoplastics Pi3K Inhibitors
  Structure

 Mechanism of Mercaptopurine-Idelalisib Interaction (Severity Level: Moderate)
     Increased risk of hepatotoxicity Click to Show/Hide Mechanism Graph
Could Not Find 2D Structure
      Drug Name Mercaptopurine Idelalisib
      Mechanism Hepatotoxicity Hepatotoxicity
      Key Mechanism Factor 1
Factor Name Hepatotoxicity
Factor Description Combination of drugs that can induce hepatotoxicity may increase the risk of liver injury. Symptoms vary depending on the level of exposure and the total extent of liver damage, and may cause few symptoms if the damage is mild, and eventually lead to liver failure in patients with severe damage.
      Mechanism Description
  • Increased risk of hepatotoxicity by the combination of Mercaptopurine and Idelalisib 

Recommended Action
      Management The use of idelalisib with other potentially hepatotoxic agents should be avoided whenever possible (e.g., acetaminophen alcohol amiodarone androgens and anabolic steroids antituberculous agents azole antifungal agents ACE inhibitors cyclosporine (high dosages) disulfiram endothelin receptor antagonists interferons ketolide and macrolide antibiotics kinase inhibitors methotrexate nonsteroidal anti-inflammatory agents nucleoside reverse transcriptase inhibitors proteasome inhibitors retinoids sulfonamides tamoxifen tetracyclines thiazolidinediones tolvaptan vincristine zileuton anticonvulsants such as carbamazepine, hydantoins, felbamate, and valproic acid lipid-lowering medications such as fenofibrate, lomitapide, mipomersen, niacin, and statins herbals and nutritional supplements such as black cohosh, chaparral, comfrey, DHEA, kava, pennyroyal oil, and red yeast rice). Patients treated with idelalisib should have serum ALT, AST, and bilirubin measured prior to initiation of treatment and regularly during treatment in accordance with the product labeling, and the dosing adjusted or interrupted as necessary.

References
1 Product Information. Zydelig (idelalisib). Gilead Sciences, Foster City, CA.