['anxiety']
['mdma', 'placebo']

        Inclusion Criteria:

          -  Diagnosed with life-threatening cancer or non-dementing neurological illness, which
             can be ongoing or in remission, but with a possibility of recurrence

          -  Prognosis of at least nine months life expectancy from the time of screening

          -  Have anxiety as a result of facing their illness

          -  Are at least 18 years old

          -  Are willing to refrain from taking any psychiatric medications during the study
             period;

          -  Are willing to commit to medication dosing, experimental sessions, follow-up sessions,
             and to complete evaluation instruments

          -  Are willing to remain overnight at the study site after each experimental session
             until after the integrative session occurring the next morning

          -  Must sign a medical release for the investigators to communicate directly with their
             therapist and doctors;

          -  Are willing to select up to three observers who will complete observer measures of
             subject attitudes and behavior

          -  Negative pregnancy test if able to bear children and agree to use effective birth
             control

          -  Are proficient in speaking and reading English

          -  Agree to have all psychotherapy sessions recorded to audio/video.

        Exclusion Criteria:

          -  Are pregnant or nursing, or if a woman who can have children, those who are not
             practicing an effective means of birth control;

          -  Weigh less than 48 kg

          -  Are abusing illegal drugs

          -  Are unable to give adequate informed consent

          -  Upon review of past, current drugs/medication must not be on or have taken a
             medication that is exclusionary

          -  Upon review of medical or psychiatric history must not have any current or past
             diagnosis that would be considered a risk to participation in the study
      