A Phase I Study of [18F]Flortaucipir PET Imaging in Chinese Subjects: Safety, Pharmacokinetics, Biodistribution, Radiation Dosimetry, and Preliminary Diagnostic Efficacy
11 maj 2026 uppdaterad av: Eli Radiopharma
A Non Randomized, Open-Label Phase I Study to Evaluate the Safety and Tolerability, Pharmacokinetics, Biodistribution and Radiation Dosimetry, and Preliminary Diagnostic Efficacy of [18F]Flortaucipir Injection PET Imaging in Chinese Subjects
This is a non randomized, open-label Phase I study in Chinese participants.
The goal of this clinical trial is to evaluate the safety and tolerability of a radioactive imaging agent called [18F]Flortaucipir Injection, which is used during a PET scan.
The study will also measure how the agent moves through the body (pharmacokinetics), where it goes (biodistribution), the amount of radiation exposure (radiation dosimetry), and how well it may help detect signs of disease (preliminary diagnostic efficacy).
Studieöversikt
Status
Rekrytering
Betingelser
Intervention / Behandling
Studietyp
Interventionell
Inskrivning (Beräknad)
18
Fas
- Fas 1
Kontakter och platser
Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.
Studieorter
-
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Beijing Municipality
-
Beijing, Beijing Municipality, Kina, 100853
- Rekrytering
- Chinese PLA General Hospital
-
Kontakt:
- Dr. Wang Ruimin, Doctor
- Telefonnummer: 86-13501151740
- E-post: wrm@yeah.net
-
-
Deltagandekriterier
Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.
Urvalskriterier
Åldrar som är berättigade till studier
- Vuxen
- Äldre vuxen
Tar emot friska volontärer
Ja
Beskrivning
Inclusion Criteria:
- Signed informed consent form (ICF).
- Male or female aged 50-85 years.
- Education level sufficient to cooperate with neuropsychological testing and obtain reliable results.
Meet the following criteria related to cognitive impairment:
- CN: No history of cognitive impairment, Aβ-PET negative, MRI without clinically significant neurodegenerative changes.
- MCI: Meet core criteria for AD-related MCI, Aβ-PET positive, MRI showing neurodegenerative changes.
- AD: Meet core criteria for probable AD dementia, Aβ-PET positive, MRI showing neurodegenerative changes.
- Fertile individuals: No plan for reproduction, sperm/egg donation within 6 months after signing ICF and until 6 months after study drug administration; and agreement to use highly effective contraception (including partner).
Exclusion Criteria:
- Pregnant (positive pregnancy test at screening or before administration) or breastfeeding women.
- Major surgery within 1 month prior to screening, or planned surgery during the study period.
- Known allergy to radioactive radiation, alcohol, [18F]Flortaucipir injection, or its excipients, or other severe allergic reactions.
- Cognitive impairment due to causes other than AD.
- Clinically significant infarction or probable multi-infarct dementia.
- Current clinically significant psychiatric illness (e.g., major depression, schizophrenia).
- History of epilepsy or seizures (except febrile seizures in childhood).
- Inability to tolerate PET/MRI or presence of contraindications to PET/MRI.
- Other neurodegenerative diseases or dementias other than AD dementia.
- Any other condition that, in the investigator's opinion, makes the subject unsuitable for the study.
Studieplan
Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.
Hur är studien utformad?
Designdetaljer
- Primärt syfte: Diagnostisk
- Tilldelning: Icke-randomiserad
- Interventionsmodell: Parallellt uppdrag
- Maskning: Ingen (Open Label)
Vapen och interventioner
Deltagargrupp / Arm |
Intervention / Behandling |
|---|---|
|
Experimentell: CN (cognitively normal)
|
A radioactive diagnostic agent intended for brain positron emission tomography (PET) imaging in adult patients with cognitive impairment who are being evaluated for Alzheimer's disease (AD), to estimate the density and distribution of aggregated tau neurofibrillary tangles (NFTs).
Andra namn:
|
|
Experimentell: MCI (mild cognitive impairment)
|
A radioactive diagnostic agent intended for brain positron emission tomography (PET) imaging in adult patients with cognitive impairment who are being evaluated for Alzheimer's disease (AD), to estimate the density and distribution of aggregated tau neurofibrillary tangles (NFTs).
Andra namn:
|
|
Experimentell: AD (Alzheimer's disease)
|
A radioactive diagnostic agent intended for brain positron emission tomography (PET) imaging in adult patients with cognitive impairment who are being evaluated for Alzheimer's disease (AD), to estimate the density and distribution of aggregated tau neurofibrillary tangles (NFTs).
Andra namn:
|
Vad mäter studien?
Primära resultatmått
Resultatmått |
Tidsram |
|---|---|
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Incidence and Severity of Treatment-Emergent Adverse Events (TEAEs)
Tidsram: 6 days post-injection
|
6 days post-injection
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Sekundära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
|
Maximum Observed Plasma Concentration (Cmax) - Total Radioactivity and Parent Compound
Tidsram: Up to 360 mins
|
Cmax is defined as the highest observed plasma concentration of total radioactivity (measured by gamma counting) and of the unmetabolized parent [18F]Flortaucipir
|
Up to 360 mins
|
|
Time to Reach Cmax (Tmax) - Total Radioactivity and Parent Compound
Tidsram: Up to 360 mins
|
Tmax is the time (in minutes) at which the maximum plasma concentration (Cmax) occurs, recorded as the midpoint of the sampling interval during which the maximum is observed.
|
Up to 360 mins
|
|
Terminal Half-Life (t½) of Unmetabolized Parent Compound
Tidsram: Up to 360 mins
|
Up to 360 mins
|
|
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Area Under the Plasma Concentration-Time Curve (AUC0-t and AUC0-∞) of Unmetabolized Parent Compound
Tidsram: Up to 360 mins
|
AUC0-t is calculated using the linear trapezoidal rule from time 0 to the last measurable concentration.
AUC0-∞ is extrapolated as AUC0-t + Ct/λz, where Ct is the last quantifiable concentration and λz is the terminal elimination rate constant.
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Up to 360 mins
|
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Percentage of Unmetabolized Parent Compound in Plasma
Tidsram: Up to 360 mins
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Up to 360 mins
|
|
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Urinary Radioactive Excretion Rate
Tidsram: 0-60, 60-120, 120-240, 240-360 mins post-injection
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Rate of radioactivity excreted in urine, expressed as percentage of injected dose per hour (%ID/h).
Measured by gamma counting of collected urine aliquots over specified intervals.
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0-60, 60-120, 120-240, 240-360 mins post-injection
|
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Cumulative Urinary Excretion of Radioactivity
Tidsram: Up to 360 mins post-injection
|
Total cumulative percentage of the injected radioactive dose recovered in urine over time.
Calculated as the sum of radioactivity excreted at each collection interval.
|
Up to 360 mins post-injection
|
|
Percentage of Unmetabolized Parent Compound and Metabolites in Urine
Tidsram: Up to 360 mins post-injection
|
Relative proportion of total urinary radioactivity that corresponds to the intact [18F]Flortaucipir and its known radioactive metabolites.
|
Up to 360 mins post-injection
|
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Organ/Tissue Radioactivity Uptake - Percent Injected Dose (%ID)
Tidsram: Up to 240 mins post-injection
|
Percentage of the injected radioactive dose (%ID) present in each target organ or tissue (e.g., brain, liver, kidneys, lungs, bone marrow, etc.) at specified imaging time points.
|
Up to 240 mins post-injection
|
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Mean Standardized Uptake Value (SUVmean) in Target Organs/Tissues
Tidsram: Up to 240 mins post-injection
|
SUVmean is defined as the mean tissue radioactivity concentration (decay-corrected) normalized by injected dose per body weight.
|
Up to 240 mins post-injection
|
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Residence Time (Source Organ Time-Integrated Activity)
Tidsram: Up to 240 mins post-injection
|
Residence time (also known as time-integrated activity coefficient) for each source organ, expressed as hours (or minutes).
|
Up to 240 mins post-injection
|
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Absorbed Dose to Target Organs/Tissues
Tidsram: Up to 240 mins post-injection
|
Absorbed dose (mGy) to each target organ/tissue (e.g., brain, liver, kidneys, urinary bladder wall, lungs, red marrow, heart wall, spleen, thyroid, etc.) per unit administered activity (mGy/MBq).
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Up to 240 mins post-injection
|
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Effective Dose (Whole-Body)
Tidsram: Up to 240 mins post-injection
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Up to 240 mins post-injection
|
|
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Visual Read Positivity Rate - Overall and by Subject Subgroup
Tidsram: At 80 mins post-injection
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Proportion of subjects with a positive PET scan based on visual assessment (blinded, independent readers) using a predefined read criterion
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At 80 mins post-injection
|
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Standardized Uptake Value Ratio (SUVR) - Composite Region
Tidsram: At 80 mins post-injection
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SUVR is calculated as the mean standardized uptake value (SUV) in a composite target region of interest
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At 80 mins post-injection
|
Samarbetspartners och utredare
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Sponsor
Studieavstämningsdatum
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Studera stora datum
Studiestart (Faktisk)
23 april 2026
Primärt slutförande (Beräknad)
31 december 2026
Avslutad studie (Beräknad)
31 mars 2027
Studieregistreringsdatum
Först inskickad
26 april 2026
Först inskickad som uppfyllde QC-kriterierna
5 maj 2026
Första postat (Faktisk)
12 maj 2026
Uppdateringar av studier
Senaste uppdatering publicerad (Faktisk)
14 maj 2026
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
11 maj 2026
Senast verifierad
1 maj 2026
Mer information
Termer relaterade till denna studie
Ytterligare relevanta MeSH-villkor
Andra studie-ID-nummer
- ELI-101-001
Läkemedels- och apparatinformation, studiedokument
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Studerar en amerikansk FDA-reglerad produktprodukt
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produkt tillverkad i och exporterad från U.S.A.
Nej
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