This phase I trial tests the safety, side effects, and best dose of RG1-virus-like particle (VLP) in preventing human papillomavirus (HPV)-related cancers in women. RG1-VLP is a vaccine that aims to protect against rare HPV types not targeted by currently approved HPV vaccines. HPV is a common sexually-transmitted infection that can cause certain genital and oral cancers. RG1-VLP contains a protein of HPV type 16 (HPV16) with a slightly different structure than the licensed Gardasil-9 vaccine. Gardasil-9 is approved by the Federal Drug Administration to help protect against diseases caused by some types of HPV. Gardasil-9 also contains 9 different HPV proteins. Both vaccines contain alum to stimulate the immune system. The usual approach for the prevention of HPV-related cancers for patients who are at increased risk is to consider the currently approved HPV vaccine like Gardasil-9, as well as to be followed closely by their doctor to watch for the development of cancer via routine pap smears. This trial may allow researchers to find out whether the RG1-VLP vaccine can safely trigger an immune response against HPV in healthy women and if it is better or worse than the usual approach for the prevention of HPV-related cancers.
Additional locations may be listed on ClinicalTrials.gov for NCT05985681.
Locations matching your search criteria
United States
Wisconsin
Madison
University of Wisconsin Carbone Cancer Center - University HospitalStatus: Active
Contact: Reinhard Kirnbauer
PRIMARY OBJECTIVE:
I. Assess the safety of RG1-virus-like particles (VLP) in healthy 18-60 years old women at 3 escalating doses.
SECONDARY OBJECTIVES:
I. Determine the immunogenicity of RG1-VLP in healthy 18-60 year old women at 3 escalating doses via the following assays:
Ia. Determine serum antibody responses induced by RG1-VLP vaccination by both human papillomavirus (HPV) 16 L1 VLP and HPV16 L2 RG1-peptide enzyme-linked immunosorbent assay (ELISA). This will be assessed at months 0, 1, 2, 3, 6, 7 and 12;
Ib. Determine whether vaccination-induced serum antibody response neutralizes HPV16. This will be assessed at months 0, 1, 2, 3, 6, 7 and 12.
EXPLORATORY OBJECTIVES:
I. Determine whether vaccination-induced serum antibody response broadly neutralizes high risk (hr) HPV other than HPV16. This will be assessed at months 0, 1, 2, 3, 6, 7 and 12.
II. Determine whether vaccination induces a cell-mediated immune (CMI) response. Peripheral blood mononuclear cells (PBMC) will be isolated at months 0, 1 and 7.
III. Determine whether vaccination-induced serum antibody response upon passive transfer to naive animals, protects mice against hrHPV pseudovirion (PsV) challenge. This will be assessed at months 0 and 7.
IV. Determine whether vaccination results in changes in local antibody titers in vaginal and oral secretions (via oral rinse) and the effects of vaccination on HPV types in optionally-collected vaginal and oral secretions and eyebrow hair samples between months 0, 7 and 12.
V. Assess the safety of recombinant human papillomavirus nonavalent vaccine (Gardasil-9) in healthy women post-administration of RG1-VLP.
OUTLINE: This is a dose-escalation study of RG1-VLP.
Patients receive RG1-VLP intramuscularly (IM) for 3 doses at months 0, 2, and 6 in the absence of unacceptable toxicity. Patients may also receive Gardasil-9 via injection for 3 doses at 6 months after the 3rd study vaccination (month 12), then at months 14 and 18 in the absence of unacceptable toxicity. Patients also undergo blood sample collection on study and may undergo vaginal swab collection on study.
After completion of study treatment, patients are followed up to 6 months post-3rd RG1-VLP vaccination injection or up to 14 days post-3rd Gardasil-9 vaccination.
Lead OrganizationUniversity of Wisconsin Carbone Cancer Center - University Hospital
Principal InvestigatorReinhard Kirnbauer