The Cognitive Effects of Lorazepam in Healthy Older Individuals with TOMM40 Variable-length Polymorphisms


  • Study type

  • Study IDs

  • Describes the nature of a clinical study. Types include:

    • Observational study — observes people and measures outcomes without affecting results.
    • Interventional study (clinical trial) — studies new tests, treatments, drugs, surgical procedures or devices.
    • Medical records research — uses historical information collected from medical records of large groups of people to study how diseases progress and which treatments and surgeries work best.
  • Site IRB
    • Scottsdale/Phoenix, Arizona: 12-006469
    NCT ID: NCT01780519
    Sponsor Protocol Number: 12-006469

About this study

The investigators' goal is to determine if certain tests of memory and attention, performed while sleepiness is induced by a single dose of lorazepam, can predict whether or not an individual is at risk for developing Alzheimer's disease.

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. If you need assistance understanding the eligibility criteria, please contact the study team.

See eligibility criteria

Inclusion criteria:

  • MMSE score of 28-30
  • Hamilton Depression Rating Scale score of less than 10
  • Participants in longitudinal study of aging and have a TOMM40 genotype of S/S, VL/VL, S/VL, L/S or L/VL.

Exclusion criteria:

  • Alzheimer's Disease or Mild Cognitive Impairment
  • Any significant medical, psychiatric, and neurological illnesses, e.g., impaired liver or kidney function, prior stroke, traumatic brain injury, memory impairment, cognitive impairment, parkinsonism, a lifetime history of schizophrenia, bipolar disorder, a psychoactive substance use disorder, or current major depression.
  • Known allergy to benzodiazepines
  • Current use (within the previous four weeks) of benzodiazepines or other medications known to interact with lorazepam, current use of sedating antihistamines, or current use of stimulant medications

Participating Mayo Clinic locations

Study statuses change often. Please contact us for help.

Mayo Clinic Location Status

Scottsdale/Phoenix, Ariz.

Mayo Clinic principal investigator

Cynthia Stonnington, M.D.

Closed for enrollment


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