Cognitive Detection of Preclinical AD: Validation Using Biomarkers
調査の概要
状態
条件
詳細な説明
Biomarkers, such as amyloid deposition, and Hipp volume loss, and low Aβ and high pTau in CSF, are useful for identifying cognitively normal (CN) elderly who are likely have early AD pathology ("preclinical AD"). However, they are invasive and/or expensive. The goal of the current study is to develop and validate cognitive proxies of AD biomarkers by using cognitive tasks that are dependent on brain regions impaired by very early AD pathology. If successful, these tasks will provide a non-invasive and cost-effective way to identify and track change in CN individuals at high risk for progressing to mild cognitive impairment (MCI) and dementia stages of AD and thus will facilitate future prevention trials in pAD.
Subjects will attend three study visits. During the first study visit, subjects will have eligibility criteria confirmed, have a blood sample drawn, and complete about half of the cognitive tasks. The second visit, which will occur within one week of visit one, will involve completion of the remaining cognitive tasks. Subjects will also be asked to have a PET-CT scan during visit three (to occur within 3 months of visits 1 and 2).
研究の種類
入学 (実際)
連絡先と場所
研究場所
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New York
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New York、New York、アメリカ、10016
- NYU Langone Medical Center
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参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
サンプリング方法
調査対象母集団
説明
Inclusion Criteria:
- Prior enrollment as a participant in the NYU Alzheimer's Disease Center (ADC) and completion of the ADC Clinical Evaluation within the past year.
- Clinical diagnosis of "cognitively normal" or "amnestic mild cognitive impairment" based on recent (within 1 year) consensus meeting cross-referenced with standard neuropsychological scores.
- Normal or corrected-to-normal vision and hearing (able to see images on computer screen and hear auditory events delivered through the computer speaker).
Exclusion Criteria:
- Significant history of mental illness, drug or alcohol abuse; severe trauma preventing normal use of dominant hand (needed to move the mouse cursor); clinical depression (unless medically controlled); other neurologic conditions (i.e. stroke), or learning disability; ophthalmologic/visual problems that prevent viewing a computer screen at a normal distance (such as legal blindness, detached retinas, occlusive cataracts).
- Lack of capacity to give informed consent and no legally authorized representative to provide consent.
- Having pacemakers, aneurysm clips, cochlear implants, or metal/foreign objects in body and therefore, unable to receive MRI.
- Pregnancy, breastfeeding or planning to have a baby.
研究計画
研究はどのように設計されていますか？
デザインの詳細
- 観測モデル：コホート
- 時間の展望：断面図
コホートと介入
グループ/コホート |
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Cognitively Normal
Participants will be deemed cognitively normal based on criteria set forth by the National Alzheimer's Disease Coordinating Center/Alzheimer's Disease Centers (ADCC/ADC).
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Amnestic Mild Cognitive Impairment (aMCI)
Participants will be deemed aMCI based on criteria set forth by the National Alzheimer's Disease Coordinating Center/Alzheimer's Disease Centers (ADCC/ADC).
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この研究は何を測定していますか？
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Correlation of composite score on cognitive tests with biomarkers
時間枠：3 months
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The overall score on the cognitive tests will be correlated via a linear regression with biomarker data collected during the study.
Each biomarker will be regressed individually.
Biomarker data includes: MRI hippocampus (hipp) volume, entorhinal cortex (EC) volume, EC standard uptake value ratios (SUVRs), Hipp SUVR, precuneus (PCu) SUVR, PET-[18F] Flutemetamol SUVR, CSF Aβ and tau levels, levels of diffusion tensor imaging mean diffusivity, and levels of fractional anisotropy.
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3 months
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二次結果の測定
結果測定 |
時間枠 |
|---|---|
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Presence of ApoE allele
時間枠：3 months
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3 months
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協力者と研究者
スポンサー
捜査官
- 主任研究者：Martin Sadowski, PhD、NYU Langone Medical Center
研究記録日
主要日程の研究
研究開始 (実際)
一次修了 (実際)
研究の完了 (実際)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (見積もり)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。