Drug General Information (ID: DDIL7OWN5T)
  Drug Name Sirolimus Drug Info Temsirolimus Drug Info
  Drug Type Small molecule Small molecule
  Therapeutic Class Immunosuppressive Agents Antineoplastics/Mtor Inhibitors
  Structure

 Mechanism of Sirolimus-Temsirolimus Interaction (Severity Level: Major)
     Additive immunosuppressive effects Click to Show/Hide Mechanism Graph
Could Not Find 2D Structure
      Drug Name Sirolimus Temsirolimus
      Mechanism 1 Immunosuppressive effects Immunosuppressive effects
      Key Mechanism Factor 1
Factor Name Immunosuppressive effects
Factor Description Immunosuppression is when your immune system is not functioning as it should. The immune system is made up of cells, tissues and organs that help the body fight off infections. If the immune system is suppressed, an infection that your body was able to control may become serious or even fatal.
      Mechanism Description
  • Additive immunosuppressive effects by the combination of Sirolimus and Temsirolimus 
     Increased risk of nephrotoxicity Click to Show/Hide Mechanism Graph
Could Not Find 2D Structure
      Drug Name Sirolimus Temsirolimus
      Mechanism 2 Nephrotoxicity Nephrotoxicity
      Key Mechanism Factor 2
Factor Name Nephrotoxicity
Factor Description The combination of drugs that can induce nephrotoxicity may increase the risk of kidney injury. When kidney injury occurs, the inability to remove excess urine and waste from the body can lead to high levels of urea nitrogen, creatinine, and electrolytes (such as potassium and magnesium) in the blood.
      Mechanism Description
  • Increased risk of nephrotoxicity by the combination of Sirolimus and Temsirolimus 
     Increased risk of other adverse reactions (Unspecific) Click to Show/Hide Mechanism Graph
      Drug Name Sirolimus Temsirolimus
      Mechanism 3 Pulmonary toxicity Pulmonary toxicity
      Key Mechanism Factor 3
Factor Name Adverse reactions
Factor Description An adverse reaction is an unexpected negative reaction to a medication or treatment that happens even when it's used correctly.
      Mechanism Description
  • Increased risk of adverse reactions by the combination of Sirolimus and Temsirolimus 

Recommended Action
      Management Concurrent use of temsirolimus and sirolimus should be avoided.

References
1 Product Information. Rapamune (sirolimus) Wyeth-Ayerst Laboratories, Philadelphia, PA.
2 Product Information. Torisel (temsirolimus). Wyeth-Ayerst Laboratories, Philadelphia, PA.