Bridging Study of C11 PiB and F18 Flutemetamol Brain PET


  • 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
    • Rochester, Minnesota: 12-000118
    NCT ID: NCT01607476
    Sponsor Protocol Number: 12-000118

About this study

The intent of this research protocol is to test the equivalency of two amyloid imaging drugs (C11 Pittsburgh Compound B and F18 Flutemetamol). The investigators hypothesize that there will be no significant difference in the distribution of the agents to areas of amyloid deposition in the brain or to other normal brain structures. Recent data have shown similarity in the distribution of the drugs in subjects with AD or mild cognitive impairment (MCI). No comparison data of the two PET drugs in normal subjects has been published. It is important to understand differences in the images and biodistribution from the two drugs in normal subjects as nonspecific accumulation of the drugs in brain structures such as white matter appear to differ slightly and could affect image performance.

The current clinical functional imaging standard for patients with indeterminate cognitive impairment is FDG PET. To allow a comparison of the PET amyloid imaging compounds with FDG PET, FDG PET scans will also be important to acquire in the subjects for comparison.

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:

  1. Males or females 30 years of age or older.
  2. Subjects who have the clinical diagnosis of probable AD (30) ages 50 and older who have a study partner who is the participant's power of attorney (POA) or legally authorized representative (LAR), cognitive normal elderly (30) age >60 and cognitive normal young subjects (30) ages 30-60.
  3. Normal subjects with Clinical Dementia Rating (CDR) 0-0.5 and AD subjects with CDR of 0.5 or greater.

Exclusion Criteria:

  1. Subjects unable to lie down without moving for 30 minutes.
  2. Women who are pregnant or who cannot stop breast feeding for 24 hours.
  3. Standard safety exclusionary criteria for MRI such as metallic foreign bodies, pacemaker, etc,.
  4. Subjects who are too claustrophobic to perform the tests.
  5. Subject who have had previous brain irradiation, stroke or brain tumor(s)

Participating Mayo Clinic locations

Study statuses change often. Please contact us for help.

Mayo Clinic Location Status Contact

Rochester, Minn.

Mayo Clinic principal investigator

Val Lowe, M.D.

Closed for enrollment

Contact information:

Terry Brinkman



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