The Effects of Chicken Extract and a Peptide Supplement for the Prevention of Cognitive Decline in Non-demented Elderly Adults

September 10, 2025 updated by: Brand's Suntory Asia

Trial of A Chicken Extract and Peptide Supplement for the Prevention of Cognitive Decline and Mechanisms of Action in Non-demented Elderly Adults: A Multicenter, Two-year, Three-arm, Randomized, Double-blind, Placebo-controlled Study

This trial investigates the effect of a chicken extract supplement and a peptide supplement on cognitive function and potential mechanisms of action of cognitive decline during ageing, among non-demented elderly adults using a three-arm, randomized, placebo-controlled clinical trial design.

Study Overview

Study Type

Interventional

Enrollment (Actual)

276

Phase

  • Early Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

      • New Taipei City, Taiwan, 235
        • Taipei Medical University Hospital Shuang Ho Hospital
      • Tainan City, Taiwan, 704
        • National Cheng Kung University Hospital
      • Taoyuan District, Taiwan, 333
        • Taoyuan Chang Gung Memorial Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

55 years to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Male or female at 55 - 75 years of age
  • Baseline cognition:
  • Normal cognition with feelings of cognitive decline (subjective cognitive decline) OR
  • Mild cognitive impairment (MCI+) with memory impairment
  • Agree to participate in the study and provide written informed consent

Exclusion Criteria:

  • Inadequate visual and auditory acuity to allow neuropsychological testing
  • Significant cerebrovascular disease
  • History of allergy to chicken meat
  • Diagnosis of Alzheimer's disease (AD) with dementia or any other dementia
  • Clinical dementia rating (CDR) score of > 0.5 at screening
  • Evidence of other neurological, psychiatric or physical illness that can produce cognitive deterioration per investigator's judgment
  • Inability or unwillingness to undergo PET scan
  • Current diagnosis or history of alcoholism or substance addiction
  • Regular use of any medication in the past 6 months that may affect cognitive functioning
  • Regular use of cognitive enhancing supplements in the past 6 months
  • Subjects with excessive blood donation or blood drawn prior to baseline
  • Persons with a history of cardiovascular disease or any other cardiovascular or cerebrovascular diseases which investigators deem unsuitable to participate in the clinical study.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Placebo Comparator: Placebo
70ml of placebo (caesinate) to be consumed daily in the morning before meals for 2 years.
Experimental: Chicken extract supplement
70ml of chicken extract supplement to be consumed daily in the morning before meals for 2 years.
Experimental: Peptides supplement
70ml of Peptide Supplement (670mg) to be consumed daily in the morning before meals for 2 years.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Cognitive Function assessed by Alzheimer's Disease Composite Score (ADCOMS)
Time Frame: 24 months

Change from baseline in Alzheimer's Disease Composite Score (ADCOMS).

ADCOMS composite score is a weighted linear combination of the 12 items in the Wold's partial least squares (PLS) model. Composite scores range from 0.0 to a maximum of 1.97, where higher values indicate worse performance.

24 months
Florbetaben (18F) PET Scan Imaging
Time Frame: 24 months
Change from baseline values in Florbetaben (18F) PET scan
24 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Handgrip strength
Time Frame: 12 months & 24 months
Change from baseline in handgrip strength
12 months & 24 months
Ratio of plasma tau protein and amyloid-beta 42
Time Frame: 24 months
Change from baseline in plasma tau protein & amyloid-beta 42 ratio
24 months
Alzheimer's Disease Composite Score (ADCOMS)
Time Frame: 12 months
Change from baseline in Alzheimer's Disease Composite Score (ADCOMS). ADCOMS composite score is a weighted linear combination of the 12 items in the Wold's partial least squares (PLS) model. Composite scores range from 0.0 to a maximum of 1.97, where higher values indicate worse performance.
12 months
Blood myeloperoxidase (MPO) levels
Time Frame: 12 months & 24 months
Change from baseline in blood myeloperoxidase (MPO) Higher levels of MPO indicate worse oxidative stress status
12 months & 24 months
Blood inflammation biomarker levels (hs-CRP, ESR, TNF-α, IL-6)
Time Frame: 12 months & 24 months

Change from baseline in inflammation, measured by the following blood biomarkers. Each biomarker will be evaluated individually.

  1. High-sensitivity C-reactive Protein (hs-CRP)
  2. Erythrocyte Sedimentation Rate (ESR)
  3. Tumor necrosis factor alpha (TNFα)
  4. Interleukin 6 (IL-6)
12 months & 24 months
Fasting blood glucose level
Time Frame: 4, 8, 12, 18 and 24 months
Change from baseline in fasting blood glucose level
4, 8, 12, 18 and 24 months
Taiwanese Depression Questionnaire (TQD) score
Time Frame: 4, 8, 12, 18 and 24 months

Change from baseline in patient-reported Taiwanese Depression Questionnaire (TQD) scores.

TDQ scores range from 0 to 54, with the higher score indicating the greater depression state.

4, 8, 12, 18 and 24 months
Short Form-36 (SF-36) Component and Scale Scores
Time Frame: 4, 8, 12, 18 and 24 months
Change from baseline in Short Form-36 (SF-36) Component and Scale Scores. Each scale is directly transformed into a 0 - 100 scale on the assumption that each question carries equal weight. Lower score indicates more disability/worse health status.
4, 8, 12, 18 and 24 months
Athens Insomnia Scale (AIS)
Time Frame: 4, 8, 12, 18 and 24 months
Change from baseline in Athens Insomnia Scale Score. A composite score which ranges from 0-24 will be evaluated. Higher score stands for greater severity of insomnia.
4, 8, 12, 18 and 24 months
Incidence of infections
Time Frame: 24 months, reported at each study visit (4, 8, 12, 18 and 24 months)
Number and incidence of infections occurring during the study period according to a self-reported infection survey
24 months, reported at each study visit (4, 8, 12, 18 and 24 months)
Cerebral blood flow measured with sonography
Time Frame: 12 months & 24 months
Mean values of cerebral blood flow measured with sonography
12 months & 24 months
Blood pressure (systolic blood pressure and diastolic blood pressure)
Time Frame: 4, 8, 12, 18 and 24 months
Change from baseline in systolic and diastolic blood pressure
4, 8, 12, 18 and 24 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

December 11, 2020

Primary Completion (Actual)

November 15, 2024

Study Completion (Actual)

January 8, 2025

Study Registration Dates

First Submitted

September 3, 2020

First Submitted That Met QC Criteria

September 14, 2020

First Posted (Actual)

September 21, 2020

Study Record Updates

Last Update Posted (Estimated)

September 16, 2025

Last Update Submitted That Met QC Criteria

September 10, 2025

Last Verified

January 1, 2025

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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