Condition category
Mental and Behavioural Disorders
Date applied
Date assigned
Last edited
Prospectively registered
Overall trial status
Recruitment status
No longer recruiting
Publication status
Results overdue

Plain English Summary

Background and study aims
The purpose of this study is to gain a better understanding of the causes of different types of speech problems and other symptoms encountered in people with different forms of dementia. We hope that information obtained from this study will lead to further research which may enable earlier and more specific diagnosis of different forms of dementia.

Who can participate?
This study will involve 20 people with a diagnosis of dementia the majority of whom will have some form of speech or visual problem. Female patients must be aged over 55 years, male patients younger than 55 years can be admitted.
In addition about 5 people who are healthy and do not have symptoms of dementia will also be enrolled. These people can be male or female and aged 55 – 90 years.

What does the study involve?
If you agree to take part in the study, you will be asked to attend for a minimum of two and maximum of three days of testing. With your permission we will collect details of your general medical history and if you are a patient also review your medical records; we will interview you and someone accompanying you about your family history, physical and intellectual health, emotional well-being, speech, personality and behaviour. We will collect details about any current medications and perform a physical and neurological examination. Depending on whether you are already taking part in other research studies at the Dementia Research Centre, we may ask that you have some more detailed memory (psychometric) testing. You will not receive any details of the results of these tests. We will then arrange for you to have an MRI brain scan. An MRI is an electronic picture of brain structure created using a strong magnet instead of an X-ray. The scan should take about 40-50 minutes. You will lie on your back and enter the MRI machine. You will be asked to remain very still during the scan. During the study you will have two PET scans. PET stands for Positron Emission Tomography. A PET scan shows us how the brain uses many different chemicals. On one of the study days we will use PET to look at a particular protein (β amyloid) that occurs in Alzheimer’s disease. On a separate day we will look at the changes in glucose in the brain, which tells us how active the brain is. The scans use very small amounts of radioactive substances called tracers to make the image. In this study we will use two tracers. One is called Florbetapir and shows up the protein (β amyloid) that occurs in Alzheimer’s disease; the other is called 18F FDG and shows how the brain uses glucose, which can be normal, increased or decreased. You must not be pregnant if you have a PET scan, and we will therefore not be involving women under the age of 55.

What are the possible benefits and risks of participating?
Participation in this study will not benefit you personally. However, we hope to gain new insights into the diagnosis and progress of dementia and hopefully this will contribute to helping others in the future. MRI: you may feel claustrophobic or uncomfortable lying in the MRI scanner. You will hear loud knocking noises but we will provide you with earplugs to wear during the MRI. You can ask to stop the MRI at any time if it becomes uncomfortable. PET/CT scanning: you may find the PET table to be uncomfortable to lie on during the scan and there is a small risk of discomfort, bruising, fainting, or infection with the tube in the vein used for checking your blood glucose and injecting the tracer. You can ask to stop the scan at any time if it becomes uncomfortable. There have been no known harmful reactions to the 18F FDG or Florbetapir compounds. Despite this, there is still the possibility of a rare allergic reaction. Both substances are radioactive and you will receive a small radiation dose from each, and from the scan itself. Adverse Events: to date, florbetapir F 18 has been tested in approximately 2,200 people in completed and ongoing studies. In the completed registration studies, the most common side effect the investigators considered to be associated with the drug was headache. There were other side effects, but none that occurred in more than one subject. Although the side effects from florbetapir F 18 noted so far have been relatively limited, there could be risks that we do not yet know about. If significant new risks become known during the study, we will inform you. There is currently no information on the effects of florbetapir F 18 on unborn children. However it is known that higher levels of radiation can cause damage to unborn children. If you are a woman who is still able to have children, or if you are pregnant or nursing, you will not be allowed to participate in this study. Venous cannulation (putting in an IV) is a routine medical procedure that has minimal risk when performed by trained personnel. Risks include blood clot, bruising and infection, but they are very small. Lightheadedness (dizziness) and fainting are also potential risks. To minimize these effects, the IV will be placed in the vein while you are lying down.

Where is the study run from?
The study is organised by researchers at the Dementia Research Centre (DRC) and Institute of Nuclear Medicine, University College London. The DRC is located in Queen Square in London (UK).

When is the study starting and how long will it run for?
The study is expected to start in November 2011 and run for one year.

Who is funding the study?
Funding for the research is from the UK Pick’s disease Support Group charity, and from a commercial company who manufactures the Florbetapir PET compound (Avid Radiopharmaceuticals).

Who is the main contact?
Dr Jonathan Schott

Trial website

Contact information



Primary contact

Dr Jonathan Schott


Contact details

University of London
Dementia Research Centre
Institute of Neurology
United Kingdom

Additional identifiers

EudraCT number number

Protocol/serial number


Study information

Scientific title

Florbetapir F18 (18F-AV-45) amyloid PET imaging in focal dementia syndromes


Study hypothesis

1. To use florbetapir F18 to investigate the pathological underpinning of the neuropsychologically distinct variants of primary progressive aphasia (PPA) and to compare patterns of florbetapir F18 uptake between these patients and those with posterior cortical Alzheimer’s disease (PCA-AD) and age-matched controls.
2. To use 18F-fluoro-2-deoxy-D-glucose (FDG) PET imaging to assess the patterns of focal hypometabolism occurring in these disorders.

Ethics approval

Central London Research Ethics Committee, 03/10/2011, ref:11/LO/1124

Study design

Phase II single-centre diagnostic open-label non-randomised study

Primary study design


Secondary study design

Non randomised study

Trial setting


Trial type


Patient information sheet

Not available in web format, please use the contact details below to request a patient information sheet


Focal dementia syndromes - primary aphasia


A single 300 MBq bolus injection of florbetapir F 18 will be administered to the patient 50 minutes prior to PET scan of the brain. Subjects are observed for 70 minutes after injection and a follow-up call within 3 days (+/- 1) monitors for late adverse events.

Intervention type



Phase II

Drug names

Florbetapir F 18

Primary outcome measure

Quantitative and qualitative assessments of florbetapir 18F uptake to test the primary hypotheses

Secondary outcome measures

Descriptive assessment of the focality and asymmetry of amyloid uptake and glucose hypometabolism between various groups

Overall trial start date


Overall trial end date


Reason abandoned (if study stopped)


Participant inclusion criteria

PPA Group
1. Are currently enrolled in the longitudinal study of frontotemporal lobular degeneration at the Dementia Research Centre (DRC) at University College London (UCL)
2. Patients with PPA will have undergone detailed neuropsychological assessments and will be classified in one of three syndromic groups: PNFA, LPA, or SD
3. Can tolerate a PET scan procedure

PCA-AD Group
1. 1. Are currently enrolled in the longitudinal study of posterior cortical atrophy at the Dementia Research Centre (DRC)
2. Patients with PCA-AD will have undergone detailed neurological assessments and will fulfil the following criteria:
2.1. Insidious onset of cognitive decline, sufficient to interfere with activities of daily living, with absence of structural lesion or significant whilte matter disease on magnetic resonnace imaging (MRI)
2.2. Relatively preserved episodic memory; deficits on standard psychological testing in at least two of four posterior cortical functions:
2.2.1. Object perception
2.2.2. Space perception
2.2.3. Calculation
2.2.4. Spelling
3. Can tolerate a PET scan procedure

Cognitively normal group
1. Have no cognition complaints
2. Are between 55 and 90 years of age
3. Give informed consent
4. Can tolerate a PET scan procedure

Participants may be male or female.
Subjects in the cognitively normal group must be aged 55 –- 90 years.
Female subjects in the PPA and PCA-AD groups must be over 55 years and not have child bearing potential; male subjects may be younger.

Participant type


Age group




Target number of participants


Participant exclusion criteria

1. Have clinically significant hepatic, renal, pulmonary, metabolic, or endocrine disturbances
2. Have a clinically significant cardiovascular disease
3. Have a clinically significant infectious disease
4. Have a history of alcohol or substance abuse or dependence
5. Have a history of severe drug allergy or hypersensitivity
6. Women of child bearing potential

Recruitment start date


Recruitment end date



Countries of recruitment

United Kingdom

Trial participating centre

University of London
United Kingdom

Sponsor information


Avid Radiopharmaceuticals Inc. (USA)

Sponsor details

3711 Market Street
Suite 710
United States of America

Sponsor type




Funder type


Funder name

Avid Radiopharmaceuticals Inc. (USA)

Alternative name(s)

Funding Body Type

Funding Body Subtype


Funder name

Pick’s Disease Support Group (UK)

Alternative name(s)

Funding Body Type

Funding Body Subtype


Results and Publications

Publication and dissemination plan

Not provided at time of registration

Intention to publish date

Participant level data

Not provided at time of registration

Basic results (scientific)

Publication list

Publication citations

Additional files

Editorial Notes

25/04/2018: No publications found, verifying study status with principal investigator 03/03/2016: No publications found, verifying study status with principal investigator