DNA Plasmid-encoding Interleukin-12/HPV DNA Plasmids Therapeutic Vaccine INO-3112 and Durvalumab in Treating Participants With Recurrent or Metastatic Human Papillomavirus Associated Cancers

PRIMARY OBJECTIVES:

I. To evaluate the anti-tumor activity of DNA plasmid-encoding interleukin-12/HPV DNA
plasmids therapeutic vaccine INO-3112 (MEDI0457) in combination with durvalumab.

SECONDARY OBJECTIVES:

I. To determine the safety profile of MEDI0457 in combination with durvalumab in patients
with recurrent/metastatic human papilloma virus (HPV) 16- or 18- associated cancer.

II. To evaluate the progression-free survival (PFS) and overall survival (OS) of patients
with recurrent/metastatic incurable HPV-16/18 positive solid malignancies receiving the
combination of MEDI0457and durvalumab.

III. To evaluate objective response rate (ORR) by immune-related criteria of the combination
of MEDI0457 and durvalumab in patients with recurrent/metastatic incurable HPV-16/18 positive
solid malignancies.

IV. To evaluate the disease control rate at 24 weeks.

EXPLORATORY OBJECTIVES:

I. To determine the cellular and humoral immune response to immunotherapy with MEDI0457 in
combination with durvalumab, II. To examine the correlation between anti tumor activity and
biomarkers including: HPV-specific cellular and humoral responses, programmed death ligand 1
status, the number of tumor infiltrating lymphocytes, HPV 16/18 E6/E7 deoxyribonucleic acid
(DNA) levels and HPV 16/18 E6/E7 DNA sequence in biopsy tissue and plasma.

III. To evaluate the pharmacokinetics and anti-drug antibodies (ADA) for durvalumab.

OUTLINE:

Participants receive DNA plasmid-encoding interleukin-12/HPV DNA plasmids therapeutic vaccine
INO-3112 intramuscularly (IM) and via electroporation at 1, 3, 7, and 12 weeks and durvalumab
intravenously (IV) at 4, 8, and 12 weeks. Starting week 12, courses repeat every 8 weeks for
DNA plasmid-encoding interleukin-12/HPV DNA plasmids therapeutic vaccine INO-3112 and every 4
weeks for up to 13 doses of durvalumab in the absence of disease progression or unacceptable
toxicity.

After completion of study treatment, participants are followed up at 90 days, every 3 months
for 12 months, and then every 6 months thereafter.

Inclusion Criteria:

- Written informed consent in accordance with institutional guidelines.

- Are able and willing to comply with all study procedures.

- For patients who are not human immunodeficiency virus (HIV) positive, cervical, anal,
penile, vulvar, or vaginal cancer positive for HPV-16 and/or HPV-18 by the
institutionally approved assay. For patients who are HIV positive, histologically or
cytologically confirmed diagnosis of cancer at any site that is positive for HPV-16
and/or HPV-18 by the institutionally approved assay. Tumors may be positive for more
than 1 HPV subtype as long as HPV-16 and/or HPV-18 is present. Note: For the first 6
patients, only cervical, vulvar, or vaginal cancers will be enrolled.

- Patients with cancer that is refractory to standard therapy, that have either relapsed
after standard therapy or has no standard therapy that increases survival by at least
three months, and/or that are not curable by salvage approaches including resection
and/or re-irradiation

- Has measurable disease, defined as at least one lesion that can be accurately measured
in at least one dimension (longest diameter to be recorded) with a minimum size of 10
mm by computed tomography (CT) scan, except lymph nodes which must have minimum short
axis size of 15 mm (CT scan slice thickness no greater than 5 mm in both cases).
Indicator lesions must not have been previously treated with surgery, radiation
therapy, or radiofrequency ablation unless there is documented Response Evaluation
Criteria in Solid Tumors (RECIST) version 1.1 progression in the lesion after such
therapy.

- All patients must consent to pre-treatment biopsy of the tumor if it can be done
safely (as judged by the investigator) during screening. Week 10 on-treatment biopsies
will be required for a minimum 10 patients. After 10 paired biopsies have been
obtained then week 10 on-treatment biopsy will be made optional.

- World Health Organization (WHO)/Eastern Cooperative Oncology Group (ECOG) performance
status of 0 or 1

- Hemoglobin >= 9 g/dL (Note: no transfusion within 56 days. Ongoing growth factor
support is acceptable if on a stable dose for the past 56 days), within 28 days of day
0.

- Cannot be met with recent blood transfusions or require ongoing growth factor
support

- Absolute neutrophil count >= 1,000/mm^3, within 28 days of day 0.

- Cannot be met with recent blood transfusions or require ongoing growth factor
support

- Platelet count >= 100,000/mm^3 and no transfusion in prior 4 weeks, within 28 days of
day 0.

- Cannot be met with recent blood transfusions or require ongoing growth factor
support

- Total bilirubin (TBL) =< 1.5 x upper limit of normal (ULN) except patients with
documented Gilbert's syndrome (> 3 x ULN), within 28 days of day 0.

- Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) =< 3 x ULN, within
28 days of day 0.

- Serum creatinine =< 2.0 mg/dL or creatinine clearance >= 40 mL/min (measured or
calculated according to the method of Cockcroft and Gault), within 28 days of day 0.

- For human immunodeficiency virus (HIV)+ patients: documented HIV-1 infection with CD4
count > 200 cells/mm^3 and viral load < 75 copies/mL, within 28 days of day 0.

Exclusion Criteria:

- Any concurrent chemotherapy, investigational product (IP), biologic, or hormonal
therapy for cancer treatment; receipt of any investigational or approved anticancer
therapy (chemotherapy, targeted therapy, biologic therapy, monoclonal antibodies,
etc.) within 21 days or 5 half lives, whichever is shorter, prior to the first dose of
MEDI0457; concurrent enrollment in another clinical study, unless it is an
observational (non-interventional) clinical study or during the follow-up period of an
interventional study.

- Major surgical procedure or significant traumatic injury within 28 days before the
first dose of study drug or anticipation of the need for major surgery during the
course of study treatment.

- Any unresolved toxicity (National Cancer Institute Common Terminology Criteria for
Adverse Event [CTCAE] version 4.03 [v4.03]) grade 2 or greater from previous
anticancer therapy with the exception of alopecia, and the laboratory values defined
in the inclusion criterion 8. Hearing loss of grade 3 or lower and peripheral
neuropathy of grade 2 or lower is allowed. Subjects with grade >= 2 neuropathy will be
evaluated on a case-by-case basis after consultation with the study physician.
Subjects with irreversible toxicity not reasonably expected to be exacerbated by
treatment with durvalumab may be included only after consultation with the study
physician.

- Current or prior use of immunosuppressive medication within 14 days prior to first
study dose, with the exception of intranasal and inhaled corticosteroids or systemic
corticosteroids at physiologic doses not to exceed 10 mg/day of prednisone or
equivalent. Steroids as premedication for hypersensitivity reactions due to
radiographic contrast agents are allowed.

- Patients requiring therapeutic anticoagulation and irreversible platelet inhibitors
(e.g. clopidogrel, prasugrel, or ticagrelor). Low dose aspirin for cardiac prophylaxis
is allowed.

- History of primary immunodeficiency.

- Patients who have had prior exposure to immune-mediated therapy defined as prior
exposure to T-cell and natural killer cell directed therapy (e.g. anti-PD-1,
anti-PD-L1, anti-CD137, and anti-CTLA4, etc).

- History of allogeneic organ transplantation.

- Active or prior documented autoimmune or inflammatory disorders (including
inflammatory bowel disease [e.g. colitis, ulcerative colitis or Crohn's disease],
diverticulitis [with the exception of diverticulosis], systemic lupus erythematosus,
sarcoidosis syndrome, or Wegener syndrome [granulomatosis with polyangiitis, Graves'
disease, rheumatoid arthritis, hypophysitis, uveitis, etc.]). The following are
exceptions to this criterion: patients with vitiligo or alopecia, patients with
hypothyroidism (e.g. following Hashimoto syndrome) stable on hormone replacement, any
chronic skin condition that does not require systemic therapy, patients without active
disease in the last 5 years may be included but only after consultation with the study
physician, and patients with celiac disease controlled by diet alone.

- Uncontrolled intercurrent illness, including, but not limited to, ongoing or active
infection, uncontrolled hypertension, interstitial lung disease, serious chronic
gastrointestinal conditions associated with diarrhea, or psychiatric illness/social
situations that would limit compliance with study requirement, substantially increase
risk of incurring adverse events, or compromise the ability of the patient to give
written informed consent.

- Patients with spinal cord compression or a history of leptomeningeal carcinomatosis.
At the time of day 1 of the study, patients with central nervous system metastases
must have been treated and must be asymptomatic and meet the following criteria. 1. No
concurrent treatment, inclusive of, but not limited to, surgery, radiation, and/or
corticosteroids. (Note: patients are allowed on systemic steroids unless these are
being administered to manage central nervous system metastases); 2. Neurologic
stability (lack of signs or symptoms greater than baseline prior to radiotherapy)
until the time of dosing of MEDI0457; 3. For radiation treatment, patients must be: at
least 14 days between last day of stereotactic radiosurgery or gamma-knife treatment
and day 1 of protocol treatment, at least 28 days between last day of whole brain
radiation therapy and day 1 of protocol treatment, and/or at least 14 days since last
dose of corticosteroids and day 1 of protocol treatment.

- Patients with cardiovascular (CV) disease conditions including New York Heart
Association class 3 or 4 congestive heart failure, unstable angina pectoris, or
clinically important cardiac arrhythmias OR a recent (< 3 months) CV event, including
myocardial infarction, unstable angina pectoris, or stroke.

- Mean QT interval corrected for heart rate (QTc) >= 470 ms calculated from
electrocardiogram (ECG) using Fridericia's correction by manual read.

- Active tuberculosis (clinical evaluation that includes clinical history, physical
examination and radiographic findings, and tuberculosis testing in line with local
practice) infection.

- Presence of acute or chronic hepatitis B (hepatitis B virus [HBV]) or active hepatitis
C (hepatitis C virus [HCV]). Patients with a past or resolved HBV infection (defined
as the presence of hepatitis B core antibody [anti-HBc] and absence of HBV surface
antigen [HBsAg]) are eligible. Patients positive for HCV antibody are eligible only if
polymerase chain reaction is negative for HCV ribonucleic acid (RNA).

- Receipt of live, attenuated vaccine within 30 days prior to study entry or the first
dose of MEDI0457.

- Note: patients, if enrolled, should not receive live vaccine during the study and
up to 30 days after the last dose of IP.

- Other untreated coexisting HIV related malignancies.

- History of another primary malignancy except for: malignancy treated with curative
intent and with no known active disease >= 2 years before the first dose of IP and of
low potential risk for recurrence, adequately treated non-melanoma skin cancer or
lentigo maligna without evidence of disease, or adequately treated carcinoma in situ
without evidence of disease.

- Pregnant or breastfeeding female patients.

- Known allergy or hypersensitivity to study treatment or any of the study drugs
excipients.

- Any medical condition that, in the opinion of the investigator, would interfere with
evaluation of the study treatment or interpretation of patient safety or study
results.

- Patients with active or prior digestive tract bleeding.

- Patients with uncontrolled seizures.

- Fewer than two acceptable sites exist for intramuscular (IM) injection and
electroporation (EP) between the deltoid and lateral quadriceps muscles. Note: a site
for injection/EP is not acceptable if there are tattoos or scars within 2 cm of the
proposed injection/EP site or if there is implanted metal within the same limb. Any
device implanted in the chest (e.g. cardiac pacemaker or defibrillator) excludes the
use of the deltoid muscle on the same side of the body.

- Patients who are unable to provide informed consent, are incarcerated, or are unable
to follow protocol requirements.