Clinical Trial of CT1812 in Mild to Moderate Alzheimer's Disease

A Randomized, Double-Blind, Placebo-Controlled, Phase I Study of the Safety & Pharmacokinetics of Two Doses of CT1812 in Subjects With Mild to Moderate Alzheimer's Disease

This is a multi-center, randomized, double-blind, placebo-controlled, parallel group study of two doses of CT1812 in adults with mild to moderate Alzheimer's Disease to evaluate the safety and tolerability of oral CT1812, administered for 28 days. This trial may include up to 8 qualified investigator sites in Australia.

Study Overview

• Status: Completed
• Conditions: Alzheimer's Disease
• Intervention / Treatment: Drug: CT1812; Drug: Placebo

Detailed Description

Screening procedures will occur up to 42 days. Eligible subjects will randomized at the clinic on Day 1 and receive the first dose of study drug. Dosing for 28 days thereafter off-site and a total of 5 clinic visits over the treatment period for safety and lab assessments. Then a 7 day post-treatment completion follow-up visit (Day 35) and End of Study for last safety assessments (Day 49).

• Study Type: Interventional
• Enrollment (Actual): 19
• Phase: Phase 2; Phase 1

Contacts and Locations

Study Locations

• Australia
  • Queensland
    • Southport, Queensland, Australia
      • Dr. Phillip Morris
  • Victoria
    • Ivanhoe, Victoria, Australia, 3079
      • Austin Health
    • Melbourne, Victoria, Australia, 3121
      • Epworth Hospital
    • Parkville, Victoria, Australia, 3050
      • The Royal Melbourne Hospital Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 50 years to 80 years (ADULT, OLDER_ADULT)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

1. Willing and able to provide written informed consent prior to initiation of any study-related procedures. For subjects unable to provide written consent, consent will be provided by the Person Responsible per local regulations.
2. Men and women, 50-80 years in age inclusively with a diagnosis of mild to moderate Alzheimer's disease according to the 2011 NIA-AA. Women must be neither pregnant nor nursing, and are either surgically sterile, postmenopausal or premenopausal using an acceptable method of contraception.
3. Previous decline in cognition for more than six months.
4. Neuroimaging (MRI) obtained within the previous 6 months or during screening, consistent with the clinical diagnosis of Alzheimer's disease.
5. MMSE 18-26 inclusive.
6. No active depression and a Geriatric Depression Score (GDS) of < 6.
7. Modified Hachinski Ischemia score ≤ 4.
8. Formal education of eight or more years.
9. Living at home or in a community setting (assisted living) without continuous nursing care. Each subject must have a reliable caregiver who sees them at least 3 times weekly, can oversee the administration of study drug, and is willing and able to participate in all clinic visits and some study procedures. Responsible caregiver must provide written informed consent to participate.
10. Concurrent use of acetylcholinesterase inhibitors or memantine must be stable for 90 days prior to screening and not expected to change.

Exclusion Criteria:

1. History of or screening brain MRI scan indicative of significant abnormality, including, but not limited to, prior hemorrhage or infarct > 1 cm3, >3 lacunar infarcts, cerebral contusion, encephalomalacia, aneurysm, vascular malformation, subdural hematoma, hydrocephalus, space-occupying lesion (e.g. abscess or brain tumor such as meningioma).

2. Clinical or laboratory findings consistent with:

   1. Other primary degenerative dementia,
   2. Other neurodegenerative condition
   3. Seizure disorder
   4. Other infectious, metabolic or systemic diseases affecting the central nervous system
3. A current DSM-V diagnosis of active major depression, schizophrenia or bipolar disorder.
4. Clinically significant, advanced or unstable disease that may interfere with outcome measures, and which may bias the assessment of the clinical or mental status of the patient or put the patient at special risk

Study Plan

How is the study designed?

Design Details

• Primary Purpose: TREATMENT
• Allocation: RANDOMIZED
• Interventional Model: PARALLEL
• Masking: QUADRUPLE

Number of Arms

3

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Active Comparator: Active Treatment-Low; 6 subjects randomized to 280 mg (Low) CT1812	Drug: CT1812; Active study drug; Other Names: Study Drug
Active Comparator: Active Treatment-High; 6 subjects randomized to 560 mg (High) CT1812	Drug: CT1812; Active study drug; Other Names: Study Drug
Placebo Comparator: Placebo; 4 subjects randomized to matching placebo of CT1812	Drug: Placebo; non-active study drug; Other Names: Matching placebo

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Incidence and review of Treatment Emergent Adverse Events	Treatment Emergent Adverse Events will be assessed by reviewing: Physical Exams; monitoring of vital signs, ECGs, and clinical and laboratory assessments	Up to 30 days

Collaborators and Investigators

• Sponsor: Cognition Therapeutics
• Investigators: Principal Investigator: Michael Woodward, MD, Austin Health

Publications and helpful links

General Publications

• Izzo NJ, Yuede CM, LaBarbera KM, Limegrover CS, Rehak C, Yurko R, Waybright L, Look G, Rishton G, Safferstein H, Hamby ME, Williams C, Sadlek K, Edwards HM, Davis CS, Grundman M, Schneider LS, DeKosky ST, Chelsky D, Pike I, Henstridge C, Blennow K, Zetterberg H, LeVine H 3rd, Spires-Jones TL, Cirrito JR, Catalano SM. Preclinical and clinical biomarker studies of CT1812: A novel approach to Alzheimer's disease modification. Alzheimers Dement. 2021 Aug;17(8):1365-1382. doi: 10.1002/alz.12302. Epub 2021 Feb 8.

Study record dates

Study Major Dates

• Study Start (Actual): September 1, 2016
• Primary Completion (Actual): August 24, 2017
• Study Completion (Actual): September 1, 2017

Study Registration Dates

• First Submitted: September 5, 2016
• First Submitted That Met QC Criteria: September 15, 2016
• First Posted (Estimate): September 20, 2016

Study Record Updates

• Last Update Posted (Actual): July 26, 2018
• Last Update Submitted That Met QC Criteria: July 24, 2018
• Last Verified: July 1, 2018

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Mental Disorders; Brain Diseases; Central Nervous System Diseases; Nervous System Diseases; Neurocognitive Disorders; Neurodegenerative Diseases; Dementia; Tauopathies; Alzheimer Disease
• Other Study ID Numbers: COG0102