Evaluation of [18F]APN-1607 as a PET Biomarker

NCT ID: NCT05005819

Last Updated: 2025-02-20

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE1
• Total Enrollment: 12 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2021-05-25
• Study Completion Date: 2024-01-09

Brief Summary

The overall goal of this protocol is to evaluate [18F]APN-1607 as a PET radiotracer for measuring longitudinal change in tau pathology in participants with PSP.

Detailed Description

The overall goal of this protocol is to evaluate [18F]APN-1607 as a PET radiotracer for measuring longitudinal change in tau pathology in participants with PSP. The specific objectives are:

• To characterize and demonstrate the longitudinal progression of tau deposition in vivo in participants with PSP.
• To determine optimal PET analysis parameters for [18F]APN-1607 quantification.
• To characterize the stability of tau deposition in vivo over time in healthy volunteers (HVs).
• To evaluate consistency of [18F]APN-1607 quantification in characterizing tau deposition.

Conditions

Progressive Supranuclear Palsy; Healthy Volunteers

Study Design

• Allocation Method: NA
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: OTHER
• Blinding Strategy: NONE

Study Groups

[18F]APN-1607

Participants will receive an IV bolus injection of \[18F\]APN-1607, followed by PET brain imaging.

Group Type: EXPERIMENTAL

[18F] APN-1607

Intervention Type: DRUG

Subjects will undergo PET imaging using \[18F\]APN-1607.

Interventions

[18F] APN-1607

Subjects will undergo PET imaging using \[18F\]APN-1607.

Intervention Type: DRUG

Eligibility Criteria

Inclusion Criteria

• Males or females from 50 to 80 years of age at Screening, inclusive.
• Body weight range of ≥ 43 kg to ≤ 120 kg.
• Score ≥20 on the MMSE at Screening.
• For women of childbearing potential, agreement to remain abstinent (refrain from heterosexual intercourse) or use contraception, and agreement to refrain from donating eggs, as defined below:

• A woman is considered to be of childbearing potential if she is postmenarchal, has not reached a postmenopausal state (12 continuous months of amenorrhea with no identified cause other than menopause), and is not permanently infertile due to surgery (ie, removal of ovaries, fallopian tubes, and/or uterus) or another cause as determined by the Investigator (eg, Müllerian agenesis). The definition of childbearing potential may be adapted for alignment with local guidelines or regulations.
• Women of childbearing potential must remain abstinent or use 2 methods of contraception, one of which is a barrier method (ie, male or female condom), for the study duration and 30 days after the last dose.
• Male participants with partners of childbearing potential must commit to the use of 2 methods of contraception, one of which is a barrier method (ie, male condom with or without spermicidal jelly), for the study duration and 90 days after the last dose.
• Male participants must not donate sperm for the duration of the study and 90 days after the last dose.
• For participants receiving arterial cannulation, adequate circulation to the hand for safe placement of arterial line (as determined by Allen's test) and blood clotting (prothrombin time and partial thromboplastin time [PT & PTT]).

• Understand the study procedures and agree to participate by providing written informed consent.
• Healthy with no clinically relevant finding on physical examination at Screening.
• No cognitive impairment based on neuropsychological testing, as judged by the Investigator.
• No family history of neurological disease associated with dementia.

• Agree to participate by providing written informed consent or written assent with informed consent from the participant's LAR or caregiver.
• Has a clinical diagnosis of probable PSP based on the National Institute of Neurological Disorders and Stroke and the Society for PSP (NINDS-SPSP) criteria (Litvan, et al 1996).
• Have Screening or prior DaTscan SPECT imaging demonstrating evidence of DaT deficit, based on visual read.
• A brain MRI scan that supports a diagnosis of PSP, with no other evidence of significant neurologic pathology.
• Deemed by the opinion of the Principal Investigator to be physically able to participate in all visits throughout the duration of the trial.
• Medications taken for symptomatic treatment of PSP should be maintained on a stable dosage regimen for at least 30 days before Screening, if possible.
• The participant has an appropriate caregiver capable of accompanying participant, if applicable.

Exclusion Criteria

• Current or prior history (in the last 12 months) of any alcohol or drug abuse.
• Laboratory tests with clinically significant abnormalities and/or clinically significant unstable medical illness.
• Participants with QT interval corrected for heart rate using Fridericia's formula (QTcF) >450 msec (males) or >470 msec (females) at Screening will be excluded. ECG measurements may be repeated once.
• Has received an investigational drug or device within 30 days of Screening.
• Prior participation in other research protocols or clinical care in the last year in addition to the radiation exposure expected from participation in this clinical study, such that radiation exposure exceeds the effective dose of 50 mSv, which would be above the acceptable annual limit established by the US Federal Guidelines.
• Pregnancy, lactating or breastfeeding.
• Evidence of clinically significant gastrointestinal, cardiovascular, hepatic, renal, hematological, neoplastic, endocrine, alternative neurological, immunodeficiency, pulmonary, or other disorder or disease.
• Unsuitable veins for repeated venipuncture or contraindication to arterial blood sampling (for participants who will receive arterial blood sampling).
• Implants such as implanted cardiac pacemakers or defibrillators, insulin pumps, cochlear implants, metallic ocular foreign body, implanted neural stimulators, CNS aneurysm clips and other medical implants that have not been certified for MRI, or history of claustrophobia in MRI.
• Use of over the counter (OTC) medication (except acetaminophen), dietary supplements, or vitamins, within 2 weeks prior to initial dosing, unless approved by the Investigator.
• Has a known hypersensitivity to any component of the formulation of [18F]APN-1607 or related compounds.
• Major surgery, or donation or loss of 400 mL or more of blood within 4 weeks prior to initial dosing, or longer, if required by local regulation.
• History of immunodeficiency diseases, including a positive HIV test result.
• A positive Hepatitis B surface antigen (HBsAg) or Hepatitis C antibody test result.
• Participant is, in the opinion of the Investigator, unsuitable in any other way to participate in this study.
• If available, evidence of amyloid deposition on amyloid PET.
• Any new or change in prescription drugs prior to initial dosing, unless approved by the Investigator.

• The participant is currently exposed to nicotine products or had regular nicotine exposure within a six-month period, to be verified by urine cotinine screening

• Ongoing treatment with methylphenidate, modafinil, metoclopramide, alpha methyldopa, reserpine, or amphetamine derivative, for participants requiring DaTscan imaging.
• Participant has known hypersensitivity to iodine or potassium iodide (KI) in the opinion of the Investigator.

• Minimum Eligible Age: 50 Years
• Maximum Eligible Age: 80 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Invicro

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

David Russell, M.D., Ph.D.

Role: PRINCIPAL_INVESTIGATOR

Invicro

Locations

Invicro

New Haven, Connecticut, United States

Countries

United States

Related Links

http://invicro.com

Related Information

Other Identifiers

APN-1607 (9646)

Identifier Type: -

Identifier Source: org_study_id