Alzheimer Disease
Conditions
Keywords
Alzheier Disease, PET imaging, AV45, AV1451, Tau
Brief summary
In this study, a total of 60 AD patients with Aβ deposition will beenrolled.Qualified subjects will complete PET imaging scan of Tau imaging agent inXuanwuHospital, and each subject will receive three of the following five imaging agents: PI-2620, APN1607, AV1451, RO948 or GTP1.The imaging time interval between the two tracers should be at least 4 days but less than 4 weeks. All PET scans of each subject were completed within 3 months.To compare the different Tau tracers' binding ability (SUVR or Tau distribution change) of the same subject in AD population. Obtain the safety data of each tracer after injection.
Detailed description
Patients with AD in prodromal stage, mild or moderate degree, who have stable medical condition and meet the inclusion criteria, do not meet any exclusion criteria, will be eligible for inclusion in this study. \[18F\] florbetapir PET imaging will be used to evaluate amyloid deposition during the screening period. If \[18F\] florbetapir imaging confirmed amyloid deposition based on positive visual reading and SUVR \> 1.1, the patient was considered to be amyloid deposition positive.After the subjects enter the group, the comprehensive collection of clinical information, the assessment of cognitive related scale and the collection and detection of biological samples are carried out. Qualified subjects will complete PET imaging scan of Tau imaging agent in Xuanwu Hospital, and each subject will receive three of the following five imaging agents: PI-2620, APN1607, AV1451, RO948 or GTP1. All subjects will sign the tracer related informed consent before PET tracer injection. Imaging will be carried out as detailed in the technical operation manual. PET center staff will closely observe and evaluate adverse events of subjects throughout the process, and allow them to leave the hospital after confirming medical stability. After 48 hours of scanning, the staff will follow up the subjects by telephone to confirm the health status of the subjects and record the information related to adverse events. The imaging time interval between the two tracers should be at least 4 days but less than 4 weeks. All PET scans of each subject were completed within 3 months.
Interventions
None listed
Sponsors
H. Lundbeck A/S
Hoffmann-La Roche
Genentech, Inc.
Life Molecular Imaging SA
APRINOIA Therapeutics
XINGIMAGING LLC
Hangzhou G-Bio Biotechnology Co., Ltd
Xuanwu Hospital, Beijing
Study design
Observational model
CASE_CONTROL
Time perspective
CROSS_SECTIONAL
Eligibility
Sex/Gender
ALL
Age
55 Years to 80 Years
Healthy volunteers
No
Inclusion criteria
* Age 55-80, male or female. * The legal authorizer or caregiver of the subject (if applicable) needs to sign the informed consent before any assessment. * Based on the NINCDS / ADRDA and DSM-IV standards, it is likely to have AD dementia, with mild severe amnesia. * Screening CDR score = 0.5, and MMSE score is between 24-26 (AD patients in prodromal stage). * Or, * CDR score = 0.5 or 1, and MMSE score is between 20-23 (mild AD patients) -Or, * CDR score = 2, and MMSE score is between 15-21 (for moderate AD patients). * It has received PET imaging examination of amyloid protein or \[18F\] florbetapir imaging examination within 12 months before screening, and it is confirmed that there is amyloid binding based on qualitative analysis (visual read) and quantitative analysis. The results of amyloid PET imaging will be shared with participants, and the scanning results may be used by participants for future research. * There is no obvious evidence of other neuropathology in brain MRI supporting AD diagnosis. * Before the screening visit date, patients taking symptomatic treatment drugs must maintain a stable maintenance dose for at least 30 days. * Female subjects must have medical records or doctor's records for surgical infertility (through hysterectomy, bilateral ovariectomy or tubal ligation) or at least 1 year after menopause, otherwise, pregnancy test is required in screening period and every scanning visit and should be negative. Male subjects and their fertile partners must promise to use two methods of contraception during the study period, and one of them is barrier contraception for male subjects. * Male subjects are not allowed to donate sperm during the study and within 90 days after the completion of the study. * Willing and able to cooperate with the research process. * A qualified subject's Research Companion needs regular and sufficient contact between the research companion and the subject (weekly time ≥ 10 hours), can provide accurate information about the subject's cognition and function, and agrees to accompany the subject and provide relevant information during the visit. The study companion must have sufficient cognitive ability to accurately report the behavior, cognition and function of the subjects. The same study companion should be able to accompany the subjects to participate in the whole study process.
Exclusion criteria
* Any existing or 3-year history of alcohol or drug abuse (self statement) * Laboratory examination or ECG indicates significant clinical abnormalities and / or important unstable clinical diseases. * In the past year, the amount of radiation received by participating or clinical clinics in combination with this research institute has exceeded 50mSV (the annual limit allowed by FDA for research volunteers). * Serious gastrointestinal, cardiovascular, liver and kidney, blood, tumor, endocrine, potential nervous system, immune deficiency (including HIV positive), pneumonia and other diseases. Stable, treated chronic disease conditions such as high blood pressure, hyperlipidemia, diabetes, non metastatic skin cancer or prostate cancer, which researchers believe will not cause cognitive impairment or restrict participation in the study, are acceptable. * In addition to AD, the history or current status of neurological diseases that may affect cognition, including but not limited to Parkinson's disease, cortical basal ganglia degeneration, dementia of Lewy body, CJD, Huntington's disease, normal intracranial pressure hydrocephalus, tic disease, hypoxia, or other serious CNS trauma with significant clinical significance. * Other diseases or causes may cause the subjects to fail to complete the whole study. * MRI
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| To compare the different Tau tracers' binding ability of the same subject in AD population. | August 2021 to May 2023 | SUVR value was used to compare AD population different Tau targeting tracers, evaluate the tau binding capacity of different Tau tracers in AD population, |
| Assessing the potential value of tracers in AD diagnosis | August 2021 to May 2023 | Comparison of specific regions bound to specific tau tracers in the same subject AD population at each visit |
| To compare the different Tau tracers' binding ability of the same subject in AD | August 2021 to May 2023 | Tau distribution changewas used to compare AD population different Tau targeting tracers, evaluate the tau binding capacity of different Tau tracers in AD population |
| Obtain the safety data of each tracer after injection. | August 2021 to May 2023 | Number of adverse events recorded from baseline to follow-up by CTCAE v4.0 |
Countries
China
Contacts
Primary ContactXiaohui Sun, Nurse
Outcome results
None listed