Study Stopped
Slow Accrual
Predicting Cognitive Decline From Androgen Deprivation Therapy
ABC
Plasma Amyloid-beta 42/40 to Predict Cognitive Decline From Androgen Deprivation Therapy in Prostate Cancer: a Prospective Observational Study
Sponsor study identifier
Secondary identifiers
REGISTRY · NCI Clinical Trials Reporting Program (CTRP)
observational
32
1 country
1
Study Start
May 22, 2023
Actual (reported)Primary Completion
April 30, 2026
Actual (reported)Study Completion
April 30, 2026
Actual (reported)Androgen Deprivation Therapy (ADT) is associated with cognitive impairment and dementia in men with prostate cancer. Pre-clinical data suggest that ADT-induced hypogonadism leads to accumulation of beta-amyloid plaques in the hippocampus, a pathological hallmark of Alzheimer's Disease (AD). Neuroimaging Functional magnetic resonance imaging (fMRI) studies also demonstrate that ADT decreases metabolic activity in the parietal, occipital, and prefrontal cortices. Multiple prospective cohort and population-based clinical studies have been conducted to test the association between ADT and cognitive impairment and/or dementia. Plasma biomarkers have been developed to predict brain amyloidosis, a key pathological feature of AD and a risk factor for developing dementia due to AD. The advantage of a blood-based assay is the lower cost, invasiveness, and time compared to cerebrospinal fluid (CSF) and Positron Emission Tomography (PET)-based biomarkers.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
April 30, 2026
Actual (reported)Click on a node to explore related trials.
Some registry-reported names shown below are not yet linked in this graph.
Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
April 7, 2023
Actual (reported)April 20, 2023
Actual (reported)May 22, 2023
Actual (reported)April 30, 2026
Actual (reported)April 30, 2026
Actual (reported)Proportion of participants with cognitive decline (ADT cohort)
Proportion with cognitive decline, defined as a decrease in \>=1 neurocognitive test after ADT by \>=1 standard deviation (SD) compared to baseline.
Up to 12 months
Mean cognitive decline (ADT cohort)
The Z-scores of each cognitive test after receiving ADT will be calculated as a repeated measure.
Up to 12 months
Proportion of participants with cognitive impairment after ADT (ADT Cohort)
Proportion of participants with cognitive impairment after receiving ADT, defined as a score of \>=1 SD below normative mean score (i.e., PC control) in \>=1 of the neurocognitive tests given during the course of ADT therapy.
Up to 12 months
Change in mean plasma Aβ42/40 ratio
Up to 12 months
Mean cognition score
Up to 12 months
Mean study partner-reported cognition score
Up to 12 months
This group is comprised of adult men with hormone-sensitive prostate cancer who are starting androgen deprivation therapy as part of standard of care prostate cancer (not as part of this protocol).
This group is comprised of adult men who are in remission from prostate cancer who have never received ADT.
Study partner participants will also be recruited
Blood samples will be collected
Cognitive assessments will be both participant- and partner-reported
Participants with prostate cancer and partners of participants. The analysis population will consist of participants who complete baseline plasma Aβ42/40 and apolipoprotein E4 (APOE4) collection and the cognitive assessments at baseline and at least 3 months.
University of California, San Francisco
San Francisco, California, 94143, United States
Blood specimens will be collected
Daniel Kwon, MD
University of California, San Francisco
32 participants (actual enrollment reported by the registry).
First Submitted
April 7, 2023
First Posted
April 20, 2023
Study Start
May 22, 2023
Actual (reported)DeADT - Living Well With Prostate Cancer
Participant-reported Quality of Life Surveys
Registry-reported names are shown in full. Names without a link have not yet been matched to a Syfrah profile.
Contact the study team to confirm eligibility.
Primary Completion
April 30, 2026
Actual (reported)Study Completion
April 30, 2026
Actual (reported)Last Updated
May 7, 2026
Record last verified: 2026-04
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Source: ClinicalTrials.gov.
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