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Determining the Amount of Time Needed for Nelfinavir to Boost the Immune System in Adults

This study has been completed.
ClinicalTrials.gov Identifier:
First Posted: June 30, 2006
Last Update Posted: January 20, 2010
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Information provided by:
Mayo Clinic
Our group has shown that HAART increases the thymic production of naïve T cells in the healthy adult, thereby boosting the immune system. We propose to investigate the amount of and length of Nelfinavir therapy necessary to increase those cells in adults. Subjects will be treated with Nelfinavir, and blood will be sampled at variable times to determine the immune response in peripheral blood.

Condition Intervention Phase
Immune Response Drug: Nelfinavir Phase 1

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Investigating the Time of Nelfinavir Treatment Necessary for an Increase in Thymic Naive T Cells in Adults.

Resource links provided by NLM:

Further study details as provided by Mayo Clinic:

Primary Outcome Measures:
  • Will confirm that HIV protease inhibitors increase thymic naïve T-cell production and determine the dose and time needed to increase thymic T-cell production in adults.

Enrollment: 25
Study Start Date: October 2005
Study Completion Date: October 2007
Primary Completion Date: October 2007 (Final data collection date for primary outcome measure)
Detailed Description:

Blood will be collected at several time points during the study. DNA will be isolated from peripheral blood lymphocytes (PBL) and assessed for signal point (sj) TREC content relative to genomic CCR5 copies by real time PCR in a spectoflourometic thermal cycler. TREC values will be expressed as TREC copy number per copies of CCR5 or TREC/PBLs.

We anticipate that we will confirm our previous observations that nelfinavir therapy will increase TRECs, indicating naive T cell production from the thymus. The proposed study will determine the time course of the anticipated increase in TREC/PBLs.


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Ages Eligible for Study:   20 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Healthy individuals between the ages of 20 and 100. Exclusion criteria include the following: HIV, HBV/HCV positive, known sensitivity to protease inhibitors, oral intake contraindicated, diabetes mellitus diagnosed within the last six months, and any of the following medications: cisapride, amiodarone, terfenadine, rifampin/rifabutin, phenobarbital, pinozide, St. John's wort, ergot derivatives, quinidine, astemazole, carbemazapine, phenytoin, midazolam, triazolam, and simvastatin.
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00346619

United States, Minnesota
Mayo Clinic
Rochester, Minnesota, United States, 55905
Sponsors and Collaborators
Mayo Clinic
Principal Investigator: Stacey R. Vlahakis, M.D. Mayo Clinic
  More Information

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
ClinicalTrials.gov Identifier: NCT00346619     History of Changes
Other Study ID Numbers: 1298-05
First Submitted: June 28, 2006
First Posted: June 30, 2006
Last Update Posted: January 20, 2010
Last Verified: January 2010

Additional relevant MeSH terms:
HIV Protease Inhibitors
Protease Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Anti-HIV Agents
Anti-Retroviral Agents
Antiviral Agents
Anti-Infective Agents