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NCI Dictionary of Cancer Terms


expanded access trial  listen  (ek-SPAN-ded AK-ses TRY-ul)

  A way to provide an investigational therapy to a patient who is not eligible to receive that therapy in a clinical trial, but who has a serious or life-threatening illness for which other treatments are not available. Expanded access allows a patient to receive promising but not yet fully studied or approved cancer therapies when no other treatment option exists. Also called compassionate use trial.