HPV-301 is a prospective, randomized, double-blind, placebo controlled Phase 3 study to determine the efficacy, safety, and tolerability of VGX-3100 administered by intramuscular (IM) injection followed by electroporation (EP) delivered with CELLECTRA™ 5PSP in adult women with histologically confirmed cervical high grade squamous intraepithelial lesion (HSIL) (cervical intraepithelial neoplasia grade 2 [CIN2] or grade 3 [CIN3]) associated with human papillomavirus (HPV) 16 and/or HPV-18.