NCIt definition : A synthetic steroidal substance with antineoplastic activity. Atamestane binds irreversibly
to and inhibits the enzyme aromatase, thereby blocking the conversion of cholesterol
to pregnenolone and the peripheral aromatization of androgenic precursors into estrogens.
(NCI04);
Alternative definition : NCI-GLOSS: A substance that is being studied in the treatment of cancer. Atamestane
blocks the production of the hormone estrogen in the body. It belongs to the family
of drugs called antiestrogens.;