NCI Drug Dictionary

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.

eflornithine hydrochloride
A difluoromethylated ornithine compound with antineoplastic activity. Eflornithine irreversibly inhibits ornithine decarboxylase, an enzyme required for polyamine biosynthesis, thereby inhibiting the formation and proliferation of tumor cells. Polyamines are involved in nucleosome oligomerization and DNA conformation, creating a chromatin environment that stimulates neoplastic transformation of cells. This agent has been shown to induce apoptosis in leiomyoma cells. Check for active clinical trials using this agent. (NCI Thesaurus)

Synonym:2-difluoromethylornithine hydrochloride
alpha-difluoromethylornithine hydrochloride
eflornithine HCl
US brand name:Vaniqa
Code name:MDL 71782
Chemical structure:
  • 2-(difluoromethyl)-dl-ornithine hydrochloride, monohydrate
  • 2-(difluoromethyl)-DL-ornithine hydrochloride, monohydrate