A Multicenter Phase 2 Study to Evaluate Efficacy and Safety of PRGN-2009 in Combination With Pembrolizumab in Patients With Recurrent or Metastatic Cervical Cancer.

Inclusion Criteria: * Age 18 years and older. * Recurrent or metastatic cervical cancer (histologically or cytologically confirmed) * Must have been treated with pembrolizumab, either as monotherapy or in combination, for atleast 6 weeks. * Subjects must have histologically or cytologically confirmed HPV positive disease * Measurable disease that can be accurately measured by RECIST v1.1 criteria * Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1. * Life expectancy ≥ 12 weeks from the time of enrollment. * Must have adequate organ function * Negative serum pregnancy test. Women of child-bearing potential (WOCBP) must agree to use adequate contraception prior to study entry and for at least 6 months following completion of study treatment. * All patients must have the ability to understand and willingness to sign a written informed consent. Exclusion Criteria: * Prior chemotherapy, targeted therapy within 14 days; monoclonal antibody within 4 weeks; unresolved AEs. * Immunodeficiency, active autoimmune disease on immunosuppression, or immunosuppressive therapy within 7 days. HIV eligible with disease control. * Active hepatitis B (HBsAg+) or hepatitis C (HCV RT-PCR+) within 30 days of enrollment. * History of non-infectious pneumonitis or interstitial lung disease. * History of endocrine autoimmune disease (exceptions: treated Graves' disease; hypothyroidism on replacement). * Live vaccine within 30 days prior to first dose. * Patients with presence of other active malignancy within 1 year prior to study entry * Known Central Nervous System (CNS) disease * Has severe hypersensitivity (≥Grade 3) to pembrolizumab and/or any of its excipients. * Known history of active tuberculosis (TB, Bacillus tuberculosis). * Pregnant and lactating women are excluded from this study. * Patients with a history of solid organ transplant. * Patients currently participating in a study of an investigational agent or have used an investigational device within 4 weeks prior to the first dose of study treatment. * Patients, who in the opinion of the investigator, may not be able to comply with the monitoring requirements of the study.