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Stanford Universities: The Stanford HIV Aging Cohort

The recruitment status of this study is unknown because the information has not been verified recently.
Verified July 2011 by Stanford University.
Recruitment status was  Recruiting
Information provided by:
Stanford University Identifier:
First received: July 19, 2011
Last updated: July 22, 2011
Last verified: July 2011

July 19, 2011
July 22, 2011
December 2010
December 2011   (final data collection date for primary outcome measure)
neurocognitive testing [ Time Frame: 1 year ] [ Designated as safety issue: No ]
Controlled oral word association test-FAS, Paced auditory serial addition task, trail making a and b, REY auditory verbal learning test, grooved peg board, timed gait
Same as current
Complete list of historical versions of study NCT01401348 on Archive Site
cardiovascular testing [ Time Frame: 1 yr ] [ Designated as safety issue: No ]
ankle-brachial index
Same as current
Not Provided
Not Provided
Stanford Universities: The Stanford HIV Aging Cohort
The Stanford HIV Aging Cohort (SHAC)

A research study to evaluate the effect of aging and HIV on neurocognitive dysfunction (declining ability to process information), physical frailty and heart disease. HIV-infected participants whose virus is controlled on antiretroviral medications will be studied to determine the rates and risk factors of developing these conditions.

With advances in antiretroviral therapy, the life expectancy of HIV-infected individuals continues to improve with older individuals representing a rapidly growing proportion of those infected. However, despite improved life expectancy, substantial residual morbidity remains in treated HIV including increased rates of neurocognitive dysfunction, frailty, and cardiovascular disease. As these conditions also increase with normal aging, HIV is often thought to be a risk factor for "early" or "accelerated" aging. Prior studies have generally focused on HIV-specific factors and risk for neurocognitive dysfunction, frailty, and cardiovascular disease, while few have examined extensively risk factors found to be significant for these conditions in the general population.

The investigators hypothesize that the effects of age and HIV will be synergistic on the rates of non-AIDS morbidity. While the correlates and risk factors for non-AIDS morbidity in younger individuals may largely be related to HIV, in older individuals with sustained virologic control, traditional risk factors for neurocognitive disease, frailty, and cardiovascular disease will contribute more significantly to disease than HIV-specific risk factors. Our primary objectives are to:

  1. Define the prevalence and incidence of neurocognitive dysfunction, frailty, and cardiovascular disease in a well-defined cohort of aging virologically suppressed HIV-infected individuals.
  2. Identify correlates and risk factors for prevalent and incident neurocognitive dysfunction, frailty, and cardiovascular disease.
  3. Compare and contrast the identified correlates and risk factors for the co-morbidities of interest in older (>50 years old) and younger HIV-infected individuals.
Observational Model: Cohort
Time Perspective: Prospective
Not Provided
Retention:   Samples Without DNA


Non-Probability Sample

300 HIV-infected participants whose virus is controlled on antiretroviral medications from the Stanford Positive Care Clinic. Five (150) patients over 50 years old and five (150) patients less than 50 years old

Acquired Immunodeficiency Syndrome
Not Provided
Not Provided
Not Provided

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
December 2011
December 2011   (final data collection date for primary outcome measure)

Inclusion Criteria:

  • Subjects must have an HIV RNA level below the limit of quantification (e.g., <75 copies, <50 copies, or <48 copies/mL, depending on the assay used) for at least 6 months excluding "blips" (e.g., a single measurement between 48-200 copies/mL preceded and followed by measurements below the limit of quantification) while on antiretroviral therapy.

Exclusion Criteria:

  1. Completed treatment for any acute systemic infection (other than HIV-1) less than four weeks before study entry.
  2. Any active brain infection (except for HIV-1), brain neoplasm, or space-occupying brain lesion.
  3. Receipt of immunomodulating medication (e.g., corticosteroids, immunoglobulin, etc.) within four weeks of study entry.
  4. Any active psychiatric illness including schizophrenia, severe depression, or severe bipolar affective disorder that, in the opinion of the investigator, could confound the analysis of the neuropsychological test results.
  5. Active drug or alcohol abuse that, in the investigator's opinion, could prevent compliance with study procedures or confound the analysis of study endpoints.
  6. Unable to provide informed consent
18 Years and older
Contact: Debbie Slamowitz (650) 723-2804
United States
Andrew R Zolopa, Stanford University School of Medicine
Stanford University
Not Provided
Principal Investigator: Andrew R Zolopa Stanford University
Principal Investigator: Philip Grant Stanford University
Stanford University
July 2011

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP