This phase II trial studies the use of human papillomavirus (HPV) deoxyribonucleic acid (DNA) plasmids therapeutic vaccine VGX-3100 (VGX-3100) and electroporation in treating patients with human immunodeficiency virus (HIV)-positive high-grade anal lesions. Vaccines made from DNA may help the body build an effective immune response to kill tumor cells. Electroporation helps pores in your body's cells take in the drug to strengthen your immune system's response. Giving VGX-3100 and electroporation together may work better in treating patients with high-grade anal lesions.
PRIMARY OBJECTIVES: I. To determine the proportion of participants with HPV-16 and/or HPV-18-positive anal high grade squamous intraepithelial neoplasia (HSIL) that achieve either complete or partial response (which is defined as histopathological regression from HSIL to low grade squamous intraepithelial neoplasia \[LSIL\] or normal) at 48 weeks after the first dose of VGX-3100 (VGX-3100). SECONDARY OBJECTIVES: I. To determine the safety and tolerability as assessed by Common Terminology Criteria for Adverse Events version 5 (CTCAE v5.0). II. To determine the proportion of participants with HPV-16 and/or HPV-18-positive anal HSIL that achieve complete response (which is defined as histopathological regression from HSIL to normal) at 48 weeks after the first dose of VGX-3100. III. To determine the proportion of participants who clear HPV-16 and/or HPV-18 (defined as changing from presence to absence of HPV-16 or 18 by anal histological specimen) at 48 weeks after the first dose of VGX-3100. IV. To determine proportion of participants who clear HPV-16 and/or HPV-18 (defined as changing from presence to absence of HPV-16 and/or 18 by anal swab) at 48 weeks after the first dose of VGX-3100. V. To compare the proportion of participants with HPV-16 and/or HPV-18-positive anal HSIL who achieve either complete or partial response (which is defined as histopathological regression from HSIL to LSIL or normal) versus those who do not at 72 weeks after the first dose of VGX-3100. TERTIARY OBJECTIVES: I. To determine the proportion of non-HPV-16 or HPV-18-positive anal HSIL lesions that achieve either complete or partial response (which is defined as histopathological regression from HSIL to LSIL or normal) at 48 weeks after the first dose of VGX-3100. II. To determine the T cell response to VGX-3100 as measured by interferon-gamma (IFN-gamma) enzyme-linked immunosorbent spot (ELISpot), flow cytometric assessments, and T cell infiltration into anal mucosal tissue. III. To determine the antibody response to VGX-3100 as measured by enzyme-linked immunosorbent assay (ELISA) against HPV-16 E7 and HPV-18 E7 target antigens. IV. To determine the association of the addition of a fourth dose of VGX-3100 with T-cell and antibody responses. V. To determine the association of VGX-3100 immune response with CD4+ lymphocyte count over time. VI. To determine the association of VGX-3100 immune response with HIV-1 ribonucleic acid (RNA) over time. VII. To determine if CD4 + lymphocyte count affects the overall or complete response rate at 48 weeks after the first dose of VGX-3100. VIII. To assess the effect of tissue PD-L1 (programmed death ligand 1) expression and T-cell infiltration on clinical benefit. OUTLINE: Patients receive HPV DNA plasmids therapeutic vaccine VGX-3100 intramuscularly (IM) and then undergo electroporation over 10 seconds for 4 doses in week 0, 4, 12, and 24 in the absence of disease progression or unacceptable toxicity. After completion of study treatment, patients are followed up for up to 72 weeks.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
35
University of California, San Francisco
San Francisco, California, United States
Grady Health System
Atlanta, Georgia, United States
Anal Dysplasia Clinic MidWest
Chicago, Illinois, United States
Boston Medical Center
Boston, Massachusetts, United States
Laser Surgery Care
New York, New York, United States
Montefiore Medical Center
The Bronx, New York, United States
Wake Forest Baptist health Sciences
Winston-Salem, North Carolina, United States
University of Puerto Rico
San Juan, Puerto Rico
Overall response rate at 48 weeks
Defined as histopathological regression of human papillomavirus (HPV)-16 and/or 18-positive anal high grade squamous intraepithelial neoplasia (HSIL) to low grade squamous intraepithelial neoplasia (LSIL) \[anal intraepithelial neoplasia (AIN)1\] or normal.
Time frame: At 48 weeks
Safety and tolerability of treatment as assessed by incidence of adverse events
Safety and tolerability of treatment as assessed by incidence of adverse events assessed by Common Toxicity Criteria for Adverse Events version 5 (CTCAE v.5). Toxicity data will be presented by type and severity.
Time frame: Up to 48 weeks
Complete response rate
Complete response is defined as histopathological regression to normal. The one-sample test of proportions will be used to compare the proportion of participants with HPV-16 and/or HPV-18 positive anal HSIL who were complete responders at 48 weeks after the first dose versus the proportion of participants with HPV-16 and/or HPV-18 positive anal HSIL who were not complete responders at 48 weeks after the first dose of HPV deoxyribonucleic acid (DNA) plasmids therapeutic vaccine VGX-3100.
Time frame: At 48 weeks
Viral clearance histological specimen
Viral clearance rate of HPV-16 and/or HPV-18 defined as changing from presence to absence of HPV-16/18 in anal HSIL by anal histological specimen. Proportions and their corresponding confidence intervals will be used to estimate the viral clearance rate of HPV-16 and HPV-18.
Time frame: At 48 weeks
Viral clearance anal swab
Viral clearance rate of HPV-16 and/or HPV-18 defined as changing from presence to absence of HPV-16/18 in anal HSIL by anal swab. Proportions and their corresponding confidence intervals will be used to estimate the viral clearance rate of HPV-16 and HPV-18.
Time frame: Up to 48 weeks
Overall response rate at 72 weeks
Overall response rate defined as histopathological regression from HSIL to LSIL or normal. The one-sample test of proportions will be used to compare the proportion of participants with HPV-16 or HPV-18 positive anal HSIL who were complete or partial responders at 72 weeks after the first dose versus the proportion of participants with HPV-16 or HPV-18 positive anal HSIL who were not complete or partial responders at 72 weeks after the first dose of HPV DNA plasmids therapeutic vaccine VGX-3100.
Time frame: At 72 weeks
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