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Sponsors and Collaborators: |
St George's, University of London Commission of the European Union |
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Information provided by: | St George's, University of London |
ClinicalTrials.gov Identifier: | NCT00949572 |
This study is a preliminary investigation of immune responses to proteins ("antigens") taken up across the undersurface of the tongue. Animal studies have shown that this "sublingual" surface can take up antigens and stimulate immune responses, which may have a different character to responses induced by injecting the same antigens. In previous studies of nasal and oral delivery, we used licensed vaccine preparations as pure and well−characterised model antigens safe for use in humans. We will use a licensed "HPV" vaccine as the source of antigens in this study. The quantity and character of responses (lymphocyte number and pattern of surface proteins, concentration and type of antibodies in fluids) will be measured in detail in various anatomical sites (blood, vaginal secretions) before and after delivery of antigens on three occasions. As well as using established immune assays to characterise the responses, we will develop new research assays to detect populations of lymphocytes and antibodies present in secretions. To ensure we have positive samples to include in our assays and validate new techniques, we will recruit some subjects to receive a standard intramuscular injection, as this is known to be nearly 100% reliable in inducing measurable immune responses. As this is a preliminary study we will recruit enough subjects (based on our previous experience with nasal, oral and injected delivery) to ensure we generate sufficient responses we can measure. We may be able to draw some tentative conclusions about differences in character of immune responses following sublingual or injected delivery, but it is not the intention of this initial study to formally compare these two routes. If we observe that sublingual delivery in humans can induce immune responses, we can select assays to test any differences more formally in subsequent bigger and more focused studies.
Condition | Intervention |
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Sexually Transmitted Diseases, Viral |
Biological: Human Papillomavirus 6,11,16,18 Vaccine Recombinant alum ads |
Study Type: | Interventional |
Study Design: | Basic Science, Non-Randomized, Open Label, Parallel Assignment |
Official Title: | Characterisation of Human Disseminated Cellular and Humoral Immune Responses Following Sublingual or Intramuscular Deposition of Antigens |
Estimated Enrollment: | 18 |
Study Start Date: | September 2009 |
Estimated Study Completion Date: | December 2010 |
Estimated Primary Completion Date: | September 2010 (Final data collection date for primary outcome measure) |
Arms | Assigned Interventions |
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Intramuscular administration: Experimental
Intramuscular injection of HPV vaccine proteins
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Biological: Human Papillomavirus 6,11,16,18 Vaccine Recombinant alum ads
1 intramuscular dose (0.5 ml) on month 0, 1 and 4 containing approximately: Human Papillomavirus Type 6 L1 protein 20 micrograms Human Papillomavirus Type 11 L1 protein 40 micrograms Human Papillomavirus Type 16 L1 protein 40 micrograms Human Papillomavirus Type 18 L1 protein 20 micrograms
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Sublingual administration: Experimental
Sublingual administration of HPV vaccine proteins
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Biological: Human Papillomavirus 6,11,16,18 Vaccine Recombinant alum ads
1 sublingual application on month 0, 1 and 4 of 0.5 ml containing approximately: Human Papillomavirus Type 6 L1 protein 20 micrograms Human Papillomavirus Type 11 L1 protein 40 micrograms Human Papillomavirus Type 16 L1 protein 40 micrograms Human Papillomavirus Type 18 L1 protein 20 micrograms
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Ages Eligible for Study: | 18 Years to 35 Years |
Genders Eligible for Study: | Female |
Accepts Healthy Volunteers: | Yes |
Inclusion Criteria:
Exclusion Criteria:
Contact: David JM Lewis, MD | +44 2087255826 | d.lewis@sgul.ac.uk |
Contact: Elka Giemza | +44 2087252316 | rgiemza@sgul.ac.uk |
United Kingdom, England | |
St George's Vaccine Institute, St George's University of London | |
London, England, United Kingdom, SW17 0RE |
Principal Investigator: | David JM Lewis, MD | St George's, University of London |
Responsible Party: | St George's, University of London ( David J.M. Lewis / Principal Investigator ) |
Study ID Numbers: | SG09-EN01, REC number: 09/80803/77, EC grant number 201038 |
Study First Received: | July 29, 2009 |
Last Updated: | July 29, 2009 |
ClinicalTrials.gov Identifier: | NCT00949572 History of Changes |
Health Authority: | United Kingdom: Research Ethics Committee |
mucosal immunity immunization sublingual |
Genital Diseases, Female Virus Diseases Sexually Transmitted Diseases, Viral |
Aluminum sulfate Sexually Transmitted Diseases Genital Diseases, Male |
Genital Diseases, Female Virus Diseases Sexually Transmitted Diseases, Viral |
Sexually Transmitted Diseases Genital Diseases, Male Infection |