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Alzheimer DiseasePhase 1COG0108NCT05225389

Study to Assess the Absorption, Metabolism, Excretion, and Mass Balance of CT1812 in Healthy Adult Male Subjects

A Phase 1 study testing 300 mg [C14] CT1812 in people with Alzheimer Disease, run by Cognition Therapeutics at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Open-label, single-dose study to assess the absorption, metabolism, excretion and mass balance of [C14] CT1812 Read more about this study

Who is it for?
Ages 19 to 55 years, men onlyHealthy volunteers can take part
Conditions the study is for
Alzheimer Disease
What is being tested?
300 mg [C14] CT1812
Could I receive a placebo?
No, everyone receives an active treatment
How many people
8 participants
Where
1 siteUnited States
Study dates
31 Dec 2021to 24 Jan 2022
Phase
Phase 1
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 19 to 55 years
  • Men only
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Healthy, adult, male, 19 - 55 years of age
  • Male subjects must follow protocol specified contraception guidance as described in the protocol
  • Continuous non smoker who has not used tobacco/nicotine containing products for at least 3 months prior to dosing.
  • Body mass index (BMI) ≥18.0 and ≤30.0 kg/m2 at the Screening visit (subjects must not have experienced a weight loss or gain of >10% within 4 weeks of dosing).
  • Medically healthy with no clinically significant medical history, physical examination, laboratory profiles, vital signs or ECGs, as deemed by the PI/designee at the Screening visit.
  • History of a minimum of 1 bowel movement per day.
  • Able to swallow multiple capsules.
  • Understands the study procedures in the informed consent form (ICF), and be willing and able to comply with the protocol.

Who cannot join

  • Evidence of disease that, in the opinion of the PI/designee, may influence the outcome of the study within 4 weeks before dosing
  • Clinically significant illness, in the opinion of the PI/designee, that requires medical treatment within 8 weeks prior to dosing, or a clinically significant infection that requires medical treatment within 4 weeks prior to dosing.
  • Any history of GI surgery that may affect PK profiles of CT1812
  • Has evidence of a clinically significant abnormality in physical examination findings, vital signs, or clinical laboratory determinations at the Screening visit or Check-in.
  • Has a clinically significant ECG abnormality at the Screening visit or Check-in.
  • Estimated creatinine clearance <80 ml/min/1.73 m2 at the Screening visit.
Show all 24Show fewer
  • Known history of clinically significant allergy to CT1812 or excipients at the Screening visit.
  • Has been diagnosed with acquired immune deficiency syndrome, or tests positive for human immunodeficiency virus (HIV), Hepatitis B virus surface antigen (HBsAg), or Hepatitis C virus (HCV) at the Screening visit.
  • Has a history of alcohol use disorder within the 2 years before the Screening visit.
  • Positive urine drug or alcohol results at the Screening visit or Check in.
  • Positive cotinine result at the Screening visit.
  • Unable to refrain from or anticipates the use of:
  • Any drugs, including prescription and non prescription medications, herbal remedies, or vitamin supplements beginning 14 days prior to dosing except for those allowed in the protocol
  • Any drugs known to be significant inducers of CYP2D6 and CYP3A4 for 28 days prior to dosing.
  • Donation of blood or significant blood loss within 56 days prior to dosing.
  • Plasma donation within 7 days prior to dosing.
  • Poor peripheral venous access.
  • Recent history (within 2 weeks of Day 1) of abnormal bowel movements, such as diarrhea, loose stools, or constipation.
  • Has exposure to significant diagnostic or therapeutic radiation (e.g., serial X-ray, computed tomography scan, barium meal) or current employment in a job requiring radiation exposure monitoring within 12 months prior to Check-in.
  • Has participated in a radiolabeled drug study where exposures are known to the PI within the previous 3 months prior to admission to the clinic for this study or participated in a radiolabeled drug study where exposures are not known to the PI within the previous 6 months prior to admission to the clinic for this study.
  • Has previously participated in a CT1812 investigational study.
  • Evidence or history of active suicidal thoughts in the 6 months preceding the screening visit; or have a history of a suicide attempt in the previous 2 years, or more than 1 lifetime suicide attempt; or are at serious suicide risk per the PIs clinical judgment.
  • Has any condition that would, in the opinion of the PI/designee or Sponsor, make the subject unsuitable for the study or is, in the opinion of the PI/designee, not likely to complete the study for any reason.
  • Participation in another clinical study within 30 days prior to dosing.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Celerion

    Lincoln, Nebraska, 68502

Other trials in United States

About this study

Official title: A Phase 1, Open-Label Study to Assess the Absorption, Metabolism, Excretion, and Mass Balance of a Single Oral Dose of [14C] CT1812 in Healthy Adult Male Subjects

Open-label, single-dose study to assess the absorption, metabolism, excretion and mass balance of [C14] CT1812

Read the detailed description

Open-label, single-dose study to assess the absorption, metabolism, excretion and mass balance of [C14] CT1812 in 8 healthy male subjects

Subjects will be screened 28-days prior to dosing to determine eligibility.

Eligible subjects will be admitted to the clinical research unit (CRU) on Day -1. On Day 1, subjects will receive a single dose of CT1812 with a microtracer dose of [14C] CT1812. Whole blood, plasma, urine and fecal samples will be collection during the confinement period. Safety will be monitored throughout the study by repeated clinical and laboratory evaluations.

Subjects will be and discharged from the CRU following completion of procedures 168 hours post dose (Day 8)

Being tested
300 mg [C14] CT1812
Medical subject headings
Alzheimer Disease

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • 300 mg [C14] CT1812Drug

    Single dose of 300 mg CT1812 with microtracer dose of [C14]

Study groups in NCT05225389
Study groupRoleWhat they receive
CT1812ExperimentalInvestigational Drug
Receives: Drug: 300 mg [C14] CT1812

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Plasma CT1812 Concentration at 96 Hours Timepoint

    Plasma concentrations of CT1812 were determined using a validated liquid chromatography with tandem mass spectrometry (LC-MS/MS) following a single oral dose of 300 mg (~1 μCi) [14C]-CT1812 administered in healthy adult male subjects.

    Measured: Predose through 96 hours postdose

  2. Plasma M6/CP199 Concentration at 144 Hours Timepoint

    Plasma concentrations of M6/CP199 were determined using a validated liquid chromatography with tandem mass spectrometry (LC-MS/MS) following a single oral dose of 300 mg (~1 μCi) [14C]-CT1812 administered in healthy adult male subjects.

    Measured: Predose through 144 hours postdose

  3. Plasma Total Radioactivity (TRA) Concentration CT1812-Equivalents at 168 Hours Timepoint

    Plasma Total Radioactivity Concentration of CT1812-Equivalents was performed using Liquid Scintillation Counting (LSC) method following a single oral dose of 300 mg (~1 μCi) [14C]-CT1812 administered in healthy adult male subjects.

    Measured: Predose, 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 24, 36, 48, 72, 96, 120, 144, 168 hours postdose

  4. Whole Blood Total Radioactivity (TRA) Concentration CT1812-Equivalents at 144 Hours Timepoint

    The analysis of Whole Blood Total Radioactivity Concentration of CT1812-Equivalents was performed using combustion followed by Liquid Scintillation Counting (LSC) method following a single oral dose of 300 mg (~1 μCi) [14C]-CT1812 administered in healthy adult male subjects.

    Measured: Predose through 144 hours postdose

  5. Cumulative Percentage of Radioactive Dose (Cum%Dose) Excreted in the Urine

    Cumulative radioactive dose (Cum%Dose) excreted in the urine was determined using Liquid Scintillation Counting (LSC) following a single oral dose of 300 mg (~1 μCi) [14C]-CT1812 administered in healthy adult male subjects.

    Measured: Predose and 0 to 4, 4 to 8, 8 to 12, and 12 to 24 hours postdose, and every 24 hours (pooled) until Day 8 (168 hours postdose).

  6. Cumulative Percentage of Radioactive Dose (Cum%Dose) Excreted in the Feces

    Cumulative radioactive dose (Cum%Dose) excreted in the feces was performed using combustion followed by Liquid Scintillation Counting (LSC) method following a single oral dose of 300 mg (~1 μCi) [14C]-CT1812 administered in healthy adult male subjects.

    Measured: Predose, 0-24, 24-48, 48-72, 72-96, 96-120, 120-144, 144-168 hours postdose

  7. CT1812 Plasma Exposure According to AUC0-last Pharmacokinetic Parameter

    Plasma CT1812 Concentration were measured using the area under the concentration-time curve, from time 0 to the last observed non-zero concentration, as calculated by the linear trapezoidal method following a single oral dose of 300 mg (~1 μCi) [14C]-CT1812 administered in healthy adult male subjects. Plasma concentrations of CT1812 were determined using a validated liquid chromatography with tandem mass spectrometry (LC-MS/MS).

    Measured: Predose, 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 24, 36, 48, 72, 96, 120, 144, 168 hours postdose

  8. M6/CP199 Plasma Exposure According to AUC0-last Pharmacokinetic Parameter

    M6/CP199 Plasma Concentration was measured using the area under the concentration-time curve, from time 0 to the last observed non-zero concentration, as calculated by the linear trapezoidal method following a single oral dose of 300 mg (~1 μCi) [14C]-CT1812 administered in healthy adult male subjects. M6/CP199 plasma concentrations were determined using a validated liquid chromatography with tandem mass spectrometry (LC-MS/MS).

    Measured: Predose, 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 24, 36, 48, 72, 96, 120, 144, 168 hours postdose

  9. Plasma Total Radioactivity According to AUC0-last Pharmacokinetic Parameter

    Plasma Total Radioactivity was measured using the area under the concentration-time curve, from time 0 to the last observed non-zero concentration, as calculated by the linear trapezoidal method following a single oral dose of 300 mg (~1 μCi) [14C]-CT1812 administered in healthy adult male subjects. Plasma Total Radioactivity Concentration of CT1812-Equivalents was performed using Liquid Scintillation Counting (LSC).

    Measured: Predose, 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 24, 36, 48, 72, 96, 120, 144, 168 hours postdose

  10. Whole Blood Total Radioactivity According to AUC0-last Pharmacokinetic Parameter

    Whole Blood Total Radioactivity was measured using the area under the concentration-time curve, from time 0 to the last observed non-zero concentration, as calculated by the linear trapezoidal method following a single oral dose of 300 mg (~1 μCi) [14C]-CT1812 administered in healthy adult male subjects. Plasma Total Radioactivity Concentration of CT1812-Equivalents was performed using Liquid Scintillation Counting (LSC)

    Measured: Predose, 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 24, 36, 48, 72, 96, 120, 144, 168 hours postdose

Secondary outcomes (2)
  1. Whole Blood:Plasma Total Radioactivity Partitioning Ratios Over Time up to 144 Hours Timepoint

    This measure describes the percentage of TRA in whole blood relative to plasma. The fraction of [14C]-radioactivity associated with whole blood and plasma and with red blood cells and other cellular components of whole blood was determined by using the concentration of [14C]-radioactivity in whole blood and plasma.

    Measured: Predose through 144 hours postdose

  2. Number of TEAEs, Related TEAEs, SAEs, and Related SAEs

    Incidence and Severity of Adverse Events. All AEs that occurred during this clinical trial were coded using the Medical Dictionary for Regulatory Activities (MedDRA®), Version 24.1.

    Measured: Predose, 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 24, 36, 48, 72, 96, 120, 144, 168 hours

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted4 Feb 2022
  2. Study start31 Dec 2021
  3. Primary completion17 Jan 2022
  4. Study completion24 Jan 2022

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Basic science
Allocation
Not applicable
Intervention model
Single group
Model description
Open-label, single-dose study
Masking
None (open label)
Enrolment
8 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05225389
Sponsor's protocol ID
COG0108
Other IDs
SB1AG073028
Acronym
COG0108
Status last verified
Jul 2023
First submitted
11 Jan 2022
Last updated
21 Jul 2023
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing 300 mg [C14] CT1812 in people with Alzheimer Disease, run by Cognition Therapeutics at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 8 inclusion and 24 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 21 Jul 2023. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 21 Jul 2023). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Plasma CT1812 Concentration at 96 Hours Timepoint (time frame: Predose through 96 hours postdose). The study lists 10 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 21 Jul 2023.

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