This phase II trial studies how well imiquimod with or without 9-valent human papillomavirus (HPV) vaccine work in treating patients with high-grade pre-neoplastic cervical lesions. Imiquimod may help to improve patients' immune system. Vaccines made from peptides may help the body build an effective immune response to kill tumor cells. Giving booster vaccinations may make a stronger immune response and prevent or delay the recurrence of cancer. It is not yet known whether giving imiquimod with or without 9-valent HPV vaccine may work better in treating patients with cervical lesions.
Study sponsor and potential other locations can be found on ClinicalTrials.gov for NCT02864147.
PRIMARY OBJECTIVES:
I. To determine treatment efficacy defined as histologic regression to cervical intraepithelial neoplasia (CIN) 1 or less at weeks 20-24 (4 to 8 weeks after the end of imiquimod treatment) in the HPV vaccine + Imiquimod group compared to control.
II. To determine treatment efficacy defined as histologic regression to CIN 1 or less at weeks 20-24 (4 to 8 weeks after the end of imiquimod treatment) in the Imiquimod group compared to control.
SECONDARY OBJECTIVES:
I. To assess complete regression (i.e., histologic remission) at weeks 20-24 (4 to 8 weeks after the end of imiquimod treatment) in each group.
II. To assess HPV clearance in each group.
III. To assess treatment tolerability.
EXPLORATORY OBJECTIVES:
I. To assess T cell infiltration in post-treatment cervical biopsies and endocervical cytobrush samples.
II. To assess HPV16 E7 immunity in CD4/CD8 T cells.
OUTLINE: Patients are randomized to 1 of 3 arms.
ARM I: Patients undergo observation.
ARM II: Patients receive imiquimod via vaginal suppository every week for 16 weeks.
ARM III: Patients receive imiquimod via vaginal suppository every week for 16 weeks. Patients also receive recombinant human papillomavirus nonavalent vaccine intramuscularly (IM) at baseline and week 8.
After completion of study treatment, patients are followed up at week 22, and at 3 and 6 months.
Lead OrganizationYale University
Principal InvestigatorAlessandro D. Santin