Observational Study of the Preventive Trial With HIV-1 Tat Protein
The results of the Phase I Safety and Immunogenicity Trial of Recombinant HIV-1 Tat (ISS P-001 and ISS T-001) indicate that the vaccine based on the recombinant Tat protein is safe, well tolerated and immunogenic. The present study is intended to extend the follow-up of the volunteers for additional 3 years to evaluate the persistence of the anti-Tat humoral and cellular immune response. The...
Brief Summary
Official Title: “Observational Study of the Phase I Safety and Immunogenicity Trial of Recombinant HIV-1 Tat in HIV-1 Uninfected Adult Volunteers”
The results of the Phase I Safety and Immunogenicity Trial of Recombinant HIV-1 Tat (ISS P-001 and ISS T-001) indicate that the vaccine based on the recombinant Tat protein is safe, well tolerated and immunogenic. The present study is intended to extend the follow-up of the volunteers for additional 3 years to evaluate the persistence of the anti-Tat humoral and cellular immune response. The results of the present study will be key for the design of future phase II trials, particularly for the definition of the optimal schedule for boosting immunizations.
All individuals (20) will be enrolled in a 120-weeks observational study and monitored every 24 weeks for the following 3 years. During these visits, in addition to the hematological and biochemical assessment, the anti-Tat specific humoral and cellular immune responses will be evaluated.
- Study Type: Observational
- Study Design: Time Perspective: Prospective
Outcome Measures for this Clinical Trial
Primary Measures
- To evaluate the persistence of specific immune responses, volunteers will be monitored for anti-Tat specific antibodies, anti-Tat proliferative response and in vitro γIFN and IL-4 production in response to Tat (Elispot).
Secondary Measures
- To develop test procedures in order to evaluate humoral and cellular anti-Tat immunity for future efficacy trials.
Criteria for Participation in this Clinical Trial
Inclusion Criteria:
- Previous participation to the Phase I Clinical Trial ISS P-001
Gender Eligibility for this Clinical Trial: Both
Minimum Age for this Clinical Trial: 18 Years
Maximum Age for this Clinical Trial: 50 Years
Are Healthy Volunteers Accepted for this Clinical Trial?: Accepts Healthy Volunteers
Clinical Trial Investigator Information
Lead Investigator: Istituto Superiore di Sanita Other
Overall Clinical Trial Officials and Contacts
Pasquale Narciso, MD Principal Investigator I.R.C.C.S. Spallanzani Hospital, Rome
Related Publications
References
Ensoli B, Buonaguro L, Barillari G, Fiorelli V, Gendelman R, Morgan RA, Wingfield P, Gallo RC. Release, uptake, and effects of extracellular human immunodeficiency virus type 1 Tat protein on cell growth and viral transactivation. J Virol. 1993 Jan;67(1):277-87.
Ensoli B, Gendelman R, Markham P, Fiorelli V, Colombini S, Raffeld M, Cafaro A, Chang HK, Brady JN, Gallo RC. Synergy between basic fibroblast growth factor and HIV-1 Tat protein in induction of Kaposi's sarcoma. Nature. 1994 Oct 20;371(6499):674-80.
Ensoli B, Barillari G, Salahuddin SZ, Gallo RC, Wong-Staal F. Tat protein of HIV-1 stimulates growth of cells derived from Kaposi's sarcoma lesions of AIDS patients. Nature. 1990 May 3;345(6270):84-6.
Ensoli B, Fiorelli V, Ensoli F, Cafaro A, Titti F, Butto S, Monini P, Magnani M, Caputo A, Garaci E. Candidate HIV-1 Tat vaccine development: from basic science to clinical trials. AIDS. 2006 Nov 28;20(18):2245-61. Review. No abstract available.
Additional Information
Information obtained from ClinicalTrials.gov on February 09, 2012
Link to the current ClinicalTrials.gov record. http://clinicaltrials.gov/show/NCT01024764
Study ID Number: ISS OBS P-001
ClinicalTrials.gov Identifier: NCT01024764
Health Authority: Italy: The Italian Medicines Agency
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http://clinicaltrialsfeeds.org/clinical-trials/show/NCT01024764
