Because of a lapse in government funding, the information on this website may not be up to date transactions submitted via the website may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted.

The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit

Updates regarding government operating status and resumption of normal operations can be found at

NCI Drug Dictionary

  • Resize font
  • Print
  • Email
  • Facebook
  • Twitter
  • Google+
  • Pinterest

The NCI Drug Dictionary contains technical definitions and synonyms for drugs/agents used to treat patients with cancer or conditions related to cancer. Each drug entry includes links to check for clinical trials listed in NCI's List of Cancer Clinical Trials.

MnSOD-plasmid liposomes
A plasmid DNA encoding human manganese superoxide dismutase (MnSOD) and liposomally encapsulated with potential chemoprotective activity. When administered orally and localizing in the esophagus, MnSOD-plasmid liposomes express MnSOD, which scavenges reactive oxygen species (ROS); MnSOD scavenging of ROS may result in a reduction in ROS-mediated lipid peroxidation, apoptosis, and micro-ulceration in the epithelial lining of the esophagus. Check for active clinical trials using this agent. (NCI Thesaurus)

Synonym:manganese superoxide dismutase plasmid liposomes