Vaccine Therapy With or Without Imiquimod in Treating Patients With Grade 3 Cervical Intraepithelial Neoplasia

Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins75 enrolled

Overview

RATIONALE: Vaccines made from DNA or a gene-modified virus may help the body build an effective immune response to kill tumor cells. Biological therapies, such as imiquimod, may stimulate the immune system in different ways and stop tumor cells from growing. Applying topical imiquimod to the cervix may be an effective treatment for cervical intraepithelial neoplasia. Giving vaccine therapy together with imiquimod may kill more tumor cells. PURPOSE: This phase I trial is studying the side effects and best dose of vaccine therapy and to see how well it works when given with or without imiquimod in treating patients with grade 3 cervical intraepithelial neoplasia.

OBJECTIVES: Primary * To evaluate safety, tolerability, and feasibility of pNGVL4a-Sig/E7(detox)/HSP70 DNA vaccine and TA-HPV vaccine with or without imiquimod in patients with human papillomavirus (HPV)16-positive grade 3 cervical intraepithelial neoplasia (CIN3). Secondary * To evaluate the effect of this regimen on histology, based on the regression of cervical intraepithelial neoplasia. * To evaluate the feasibility and safety of study immunotherapy in these patients. * To evaluate the quantitative changes in cervical HPV viral load in these patients following study immunotherapy. * To evaluate changes in lesion size. * To evaluate the cellular and humoral immune response to vaccination. * To evaluate local tissue immune response. * To correlate measures of immune response with clinical response. * To correlate measures of immune response with those observed in the preclinical model. * To evaluate if the efficacy of the prime-boost vaccination can be improved with the cervical application of imiquimod. OUTLINE: This is a dose escalation study of TA-HPV vaccine (groups 1-3 only). Patients are assigned to 1 of 5 treatment groups. * Groups 1-3: Patients receive pNGVL4a-Sig/E7(detox)/HSP70 DNA vaccine intramuscularly (IM) in weeks 0 and 4 and TA-HPV vaccine IM in week 8. * Group 4: Patients receive topical imiquimod applied to the cervix once in weeks 0, 4, and 8. * Group 5: Patients receive pNGVL4a-Sig/E7(detox)/HSP70 DNA vaccine and TA-HPV vaccine as in groups 1-3, and imiquimod as in group 4. Patients experiencing no improvement of their lesions at week 15 undergo standard cone resection of the squamocolumnar junction. If there is either 1) regression of the size of the lesions by colposcopy and/or 2) no CIN3 lesions detected by colposcopy/biopsy and Pap smear and/or 3) significant decrease of HPV viral load, patients are followed until week 28. At that time, loop electrosurgical excision procedure (LEEP) resection is performed if there is a CIN3 lesion detected by colposcopy/biopsy or suspected by Pap smear. Patients undergoing LEEP are followed until week 32. Patients not undergoing LEEP are followed until week 41 to confirm CIN3 regression. Blood and tissue samples are collected periodically to measure immune response via ELISA, determine viral load and identify co-infecting HPV types via reverse-line blotting, and analyze lymphocytes via flow cytometry. PROJECTED ACCRUAL: A total of 36 patients (3 in groups 1 and 2, 12 in groups 3 and 5, and 6 in group 4) will be accrued for this study.

Eligibility

Sex: FEMALEMin age: 18 Years

Medical Language ↔ Plain English

DISEASE CHARACTERISTICS: * Colposcopically and biopsy confirmed grade 3 cervical intraepithelial neoplasia * Human papillomavirus (HPV) 16-positive disease by PCR * Measurable disease after diagnostic biopsy * No concurrent adenocarcinoma in situ of the cervix PATIENT CHARACTERISTICS: * Not pregnant or nursing * Negative pregnancy test * Fertile patients must use an effective form of contraception during study treatment * Immunocompetent * No concurrent malignancy, except for nonmelanoma skin lesions * No serious concurrent disorder, including any of the following: * Active systemic infection * Autoimmune disease * Proven or suspected immunosuppressive disorder * Major medical illnesses of the cardiovascular or respiratory system * No evidence or history of cardiac disease, including any of the following: * Congestive heart failure * Symptomatic arrhythmia not controlled by medication * Unstable angina * History of acute myocardial infarction or cerebrovascular accident within the past 6 months * No history of severe allergy including eczema or other exfoliative skin disorder * No active eczema within the past 12 months * No concurrent skin conditions, including any of the following: * Burns * Traumatic or pruritic skin conditions * Open wounds * Unhealed surgical scars * Patients and their close social, sexual, or domestic contacts may not have any of the following active skin diseases: * Psoriasis * Lichen planus * Sever acneiform rash * Impetigo * Varicella zoster * Sepsis * No close social contact with children under 5 years old * No close social or domestic contact with a pregnant woman * No HIV seropositivity * No allergy to eggs PRIOR CONCURRENT THERAPY: * No previous vaccination with vaccinia * No immunosuppressive medication (i.e., steroid therapy or other immunosuppressive/immunomodulating drugs \[e.g., cyclosporine\]) within the past 2 months * No investigational agent(s) within the past 6 months * No concurrent participation in another experimental protocol

Outcomes

Primary Outcomes

Safety and tolerability as determined by number of participants with Serious Adverse Events

Presence of Serious Adverse Events (as defined by according to NCI CTCAE v3.0) or dose limiting toxicities related to the study drugs.

Time frame: 10 weeks from the first intervention

Secondary Outcomes

Change in histology (CIN3 or no CIN3) of biopsies between baseline and week 15

Absence of CIN3 as assessed by colposcopically directed biopsy at week 15

Time frame: 15 weeks from the date of the first intervention

Change in histology (CIN3 or no CIN3) of biopsies between baseline and week 28

Absence of CIN3 as assessed by colposcopically directed biopsy at week 28.

Time frame: 28 weeks from the date of the first intervention

Quantitative changes in cervical HPV viral load in exfoliated cell samples

HPV genotypes present at study entry which become undetectable during the study window

Time frame: 41 weeks from the date of the first intervention

Change in number of lesions by serial digital colposcopy from week 0 to week 15

Number of lesions that were present at baseline, then become undetectable by colposcopy at week 15

Time frame: Change from baseline to 15 weeks

Change in size of lesions by serial digital colposcopy from week 0 to week 15

Change in size of lesions from baseline to week 15.

Time frame: Change from baseline to 15 weeks

Characterization of peripheral and local tissue response to vaccination

Compare immune responses in the blood to local immune responses in the tissue for patients who receive the study intervention, from serially obtained peripheral blood specimens and on tissue samples from therapeutic resection

Time frame: 41 weeks

Correlation of immune response with clinical response

Compare immune responses in the blood with histologic regression of CIN3 to CIN1 or less

Time frame: 41 weeks

Correlation between measures of immune response and preclinical experimental data

Compare immune responses detected in patients who received the study intervention to those detected in the preclinical animal model.

Time frame: 41 weeks from the date of the first study intervention

Vaccine Therapy With or Without Imiquimod in Treating Patients With Grade 3 Cervical Intraepithelial Neoplasia

Overview

Conditions

Interventions

Eligibility

Locations (1)

Outcomes

Primary Outcomes

Secondary Outcomes