Skip to content

Study of HPV Specific Immunotherapy in Participants With HPV Associated Head and Neck Squamous Cell Carcinoma

Prospective Study of HPV Specific Immunotherapy in Subjects With HPV Associated Head and Neck Squamous Cell Carcinoma (HNSCCa)

Status
Completed
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02163057
Enrollment
22
Registered
2014-06-13
Start date
2014-08-13
Completion date
2017-01-23
Last updated
2021-01-22

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Head and Neck Squamous Cell Cancer

Keywords

Head and neck squamous cell cancer, Papillomavirus

Brief summary

This is a Phase I/IIa, open-label study to evaluate the safety, tolerability, and immunogenicity of INO-3112 DNA vaccine delivered by electroporation (EP) to participants with human papilloma virus (HPV) associated head and neck squamous cell cancer (HNSCC).

Detailed description

This is a Phase I/IIa, open-label, study to evaluate the safety, tolerability, and immunogenicity of INO-3112 \[6 mg of VGX-3100 (2 separate DNA plasmids respectively encoding E6 and E7 proteins of HPV 16 and HPV 18) and 1 mg of INO-9012 (DNA plasmid encoding human interleukin 12)\] delivered by electroporation (EP) in up to 25 (twenty-five) participants with HPV positive head and neck cancer. The immunotherapy was studied in the following two groups of participants: 1. Participants who received immunotherapy before and after definitive surgery (Cohort I) 2. Participants who received immunotherapy at least 2 months after chemoradiation therapy (Cohort II).

Interventions

BIOLOGICALINO-3112

1.1 mL of INO-3112 (VGX-3100 + INO-9012) delivered intramuscularly (IM) followed immediately by electroporation (EP) with CELLECTRA™-5P device for a total of 4 doses of immunotherapy.

CELLECTRA™-5P device was used for EP following IM delivery of INO-3112 for a total of 4 doses of immunotherapy.

Sponsors

University of Pennsylvania
CollaboratorOTHER
Inovio Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Signed and dated written Ethics Committee approved informed consent. 2. Age ≥18 years. 3. Histologically confirmed HPV-positive (as assessed by p16 IHC or oncogenic HPV ISH or PCR) mucosal squamous cell head and neck cancer: * For pre-surgical participants, p16 positivity must be confirmed prior to the first dose. * For participants post-chemoradiation, HPV 16 and HPV 18 positivity must be confirmed prior to the first dose. 4. Adequate bone marrow, hepatic, and renal function. ANC (Absolute Neutrophil Count) ≥ 1.5x109 cell/ml, platelets ≥75,000 cells/mm3, hemoglobin ≥9.0 g/dL, concentrations of total serum bilirubin within 1.5 x upper limit of normal (ULN), (Aspartate Aminotransferase) AST, (Alanine Aminotransferase) ALT within 2.5x institutional ULN, (Creatine Phosphokinase) CPK within 2.5 x ULN. 5. ECOG (Eastern Cooperative Oncology Group) performance status of 0-1.

Exclusion criteria

1. Anticipated concomitant immunosuppressive therapy (excluding non-systemic inhaled, topical skin and/or eye drop-containing corticosteroids). 2. Any concurrent condition requiring the continued use of systemic steroids (\>10 mg prednisone or equivalent per day) or the use of immunosuppressive agents. All other corticosteroids must be discontinued at least 4 weeks prior to Day 0 of treatment. 3. Administration of any vaccine within 6 weeks of enrollment.

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Treatment-Emergent Adverse Events (TEAEs) and Treatment-Emergent Serious Adverse Event (SAEs)Up to 6 months post last doseAn adverse event (AE) is defined as any unfavorable and unintended change in the structure, function, or chemistry of the body, or worsening of a pre-existing condition, temporally associated with the use of a product whether or not considered related to the use of the product. TEAE is defined as any AE with onset after the administration of study medication through the end-of-study follow-up, or any event that was present at baseline but worsened in intensity or was subsequently considered treatment-related by the Investigator through the end of the study. Serious adverse event (SAE) is defined as an event that meets 1 of the following criteria: is fatal or life-threatening, results in persistent or significant disability or incapacity, constitutes a congenital anomaly or birth defect, is clinically meaningful or requires inpatient hospitalization or prolongation of existing hospitalization.

Secondary

MeasureTime frameDescription
E6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)Up to 6 months post last doseTiters for HPV-16 and HPV-18 E6- and E7-specific antibodies were assessed by ELISA.
E7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAUp to 6 months post last doseTiters for HPV-16 and HPV-18 E6- and E7-specific antibodies were assessed by ELISA.
Change From Baseline (CFB) in Combined HPV-16 and HPV-18 E6 and E7 Antigen-Specific Spot-Forming Units Per Million Peripheral Blood Mononuclear Cell (SFU/10^6 PBMC) as Assessed by Enzyme-Linked Immunosorbent Spot-Forming Assay (ELISpot)Baseline up to 6 months post last dose
Change From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-16 as Assessed by Flow CytometryAt baseline and Week 2 post last doseA flow cytometry assay called lytic granule loading was used to analyze CD8+ T cells specific for HPV-16 and CD8+ T cells specific for HPV-18 by evaluating the following markers: CD8, granzyme A (GrzA), granzyme B (GrzB), and perforin (Prf) co-expression with CD137, CD69, or CD38.
Mean Difference in Tumor Infiltrating Lymphocytes (TILs) in Presurgical and Surgical Tumor Tissue Samples of Cohort I as Assessed by Immunohistochemistry (IHC)At screening and post-surgeryThe difference in means (post-surgery minus screening) for tumor-infiltrating lymphocytes (TILs) such as CD8, FoxP3, and perforin was analyzed using immunohistochemistry staining techniques.
Mean Difference in CD8/FoxP3 Ratio in Presurgical and Surgical Tumor Tissue Samples of Cohort I as Assessed by Immunohistochemistry (IHC)At screening and post-surgeryThe difference in means (post-surgery minus screening) for the CD8/FoxP3 ratio was analyzed using immunohistochemistry staining techniques.
Phenotype of Cultured TILsUp to 6 months post last dose
Change From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-18 as Assessed by Flow CytometryAt baseline and Week 2 post last doseA flow cytometry assay called lytic granule loading was used to analyze CD8+ T cells specific for HPV-16 and CD8+ T cells specific for HPV-18 by evaluating the following markers: CD8, granzyme A (GrzA), granzyme B (GrzB), and perforin (Prf) co-expression with CD137, CD69, or CD38.

Countries

United States

Participant flow

Recruitment details

Participants with a diagnosis of HPV associated head and neck squamous cell carcinoma were enrolled in the study between 13th August 2014 to 23rd January 2017.

Participants by arm

ArmCount
Cohort 1: Surgery Cohort
Participants received up to two doses of INO-3112 immunotherapy 3 weeks (± 3 days) apart before surgery and up to three doses of INO-3112 immunotherapy 3 weeks (± 3 days) apart after surgery for a total of no more than four doses of INO-3112 immunotherapy delivered IM followed by EP with CELLECTRA™-5P device.
6
Cohort 2: Chemoradiation
Participants received four doses of INO-3112 immunotherapy delivered IM followed by EP with CELLECTRA™-5P device 3 weeks (± 3 days) apart beginning approximately 2 to 6 months after chemoradiation therapy.
16
Total22

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyParticipant Refusal to Continue22
Overall StudyParticipant Significant Noncompliance01
Overall StudyProgression of Disease12

Baseline characteristics

CharacteristicCohort 2: ChemoradiationTotalCohort 1: Surgery Cohort
Age, Continuous55.4 years
STANDARD_DEVIATION 10.26
57.3 years
STANDARD_DEVIATION 9.43
62.2 years
STANDARD_DEVIATION 4.26
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants0 Participants0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
16 Participants22 Participants6 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
2 Participants3 Participants1 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
14 Participants19 Participants5 Participants
Sex: Female, Male
Female
2 Participants2 Participants0 Participants
Sex: Female, Male
Male
14 Participants20 Participants6 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 60 / 16
other
Total, other adverse events
6 / 615 / 16
serious
Total, serious adverse events
2 / 60 / 16

Outcome results

Primary

Number of Participants With Treatment-Emergent Adverse Events (TEAEs) and Treatment-Emergent Serious Adverse Event (SAEs)

An adverse event (AE) is defined as any unfavorable and unintended change in the structure, function, or chemistry of the body, or worsening of a pre-existing condition, temporally associated with the use of a product whether or not considered related to the use of the product. TEAE is defined as any AE with onset after the administration of study medication through the end-of-study follow-up, or any event that was present at baseline but worsened in intensity or was subsequently considered treatment-related by the Investigator through the end of the study. Serious adverse event (SAE) is defined as an event that meets 1 of the following criteria: is fatal or life-threatening, results in persistent or significant disability or incapacity, constitutes a congenital anomaly or birth defect, is clinically meaningful or requires inpatient hospitalization or prolongation of existing hospitalization.

Time frame: Up to 6 months post last dose

Population: Safety population included all participants who received at least one dose of study treatment plus EP.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Cohort 1: Surgery CohortNumber of Participants With Treatment-Emergent Adverse Events (TEAEs) and Treatment-Emergent Serious Adverse Event (SAEs)At least 1 TEAE6 Participants
Cohort 1: Surgery CohortNumber of Participants With Treatment-Emergent Adverse Events (TEAEs) and Treatment-Emergent Serious Adverse Event (SAEs)At least 1 Treatment-emergent SAE2 Participants
Cohort 2: ChemoradiationNumber of Participants With Treatment-Emergent Adverse Events (TEAEs) and Treatment-Emergent Serious Adverse Event (SAEs)At least 1 TEAE15 Participants
Cohort 2: ChemoradiationNumber of Participants With Treatment-Emergent Adverse Events (TEAEs) and Treatment-Emergent Serious Adverse Event (SAEs)At least 1 Treatment-emergent SAE0 Participants
Secondary

Change From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-16 as Assessed by Flow Cytometry

A flow cytometry assay called lytic granule loading was used to analyze CD8+ T cells specific for HPV-16 and CD8+ T cells specific for HPV-18 by evaluating the following markers: CD8, granzyme A (GrzA), granzyme B (GrzB), and perforin (Prf) co-expression with CD137, CD69, or CD38.

Time frame: At baseline and Week 2 post last dose

Population: ANoD population included all participants who received their assigned number of doses of study treatment plus EP. Number analyzed is the number of participants with data available for analysis at a specified time-point.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Surgery CohortChange From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-16 as Assessed by Flow CytometryCD8+CD137+GrzA+GrzB+Prf+, baseline0.09 cells/million T-cellsStandard Deviation 0.124
Cohort 1: Surgery CohortChange From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-16 as Assessed by Flow CytometryCD8+CD137+GrzA+GrzB+Prf+,CFB Week 2 post last dose0.16 cells/million T-cellsStandard Deviation 0.23
Cohort 1: Surgery CohortChange From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-16 as Assessed by Flow CytometryCD8+CD69+GrzA+GrzB+Prf+, baseline0.00 cells/million T-cellsStandard Deviation 0
Cohort 1: Surgery CohortChange From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-16 as Assessed by Flow CytometryCD8+CD69+GrzA+GrzB+Prf+, CFB Week 2 post last dose0.48 cells/million T-cellsStandard Deviation 0.282
Cohort 1: Surgery CohortChange From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-16 as Assessed by Flow CytometryCD8+CD38+GrzA+GrzB+Prf+, baseline0.00 cells/million T-cellsStandard Deviation 0
Cohort 1: Surgery CohortChange From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-16 as Assessed by Flow CytometryCD8+CD38+GrzA+GrzB+Prf+, CFB Week 2 post last dose0.89 cells/million T-cellsStandard Deviation 0.457
Cohort 2: ChemoradiationChange From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-16 as Assessed by Flow CytometryCD8+CD38+GrzA+GrzB+Prf+, baseline0.14 cells/million T-cellsStandard Deviation 0.163
Cohort 2: ChemoradiationChange From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-16 as Assessed by Flow CytometryCD8+CD137+GrzA+GrzB+Prf+, baseline0.02 cells/million T-cellsStandard Deviation 0.039
Cohort 2: ChemoradiationChange From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-16 as Assessed by Flow CytometryCD8+CD69+GrzA+GrzB+Prf+, CFB Week 2 post last dose0.20 cells/million T-cellsStandard Deviation 0.471
Cohort 2: ChemoradiationChange From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-16 as Assessed by Flow CytometryCD8+CD137+GrzA+GrzB+Prf+,CFB Week 2 post last dose0.11 cells/million T-cellsStandard Deviation 0.188
Cohort 2: ChemoradiationChange From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-16 as Assessed by Flow CytometryCD8+CD38+GrzA+GrzB+Prf+, CFB Week 2 post last dose0.26 cells/million T-cellsStandard Deviation 0.555
Cohort 2: ChemoradiationChange From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-16 as Assessed by Flow CytometryCD8+CD69+GrzA+GrzB+Prf+, baseline0.17 cells/million T-cellsStandard Deviation 0.345
Secondary

Change From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-18 as Assessed by Flow Cytometry

A flow cytometry assay called lytic granule loading was used to analyze CD8+ T cells specific for HPV-16 and CD8+ T cells specific for HPV-18 by evaluating the following markers: CD8, granzyme A (GrzA), granzyme B (GrzB), and perforin (Prf) co-expression with CD137, CD69, or CD38.

Time frame: At baseline and Week 2 post last dose

Population: ANoD population included all participants who received their assigned number of doses of study treatment plus EP. Number analyzed is the number of participants with data available for analysis at a specified time-point.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Surgery CohortChange From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-18 as Assessed by Flow CytometryCD8+CD137+GrzA+GrzB+Prf+, baseline0.00 cells/million T-cellsStandard Deviation 0
Cohort 1: Surgery CohortChange From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-18 as Assessed by Flow CytometryCD8+CD137+GrzA+GrzB+Prf+,CFB Week 2 post last dose0.09 cells/million T-cellsStandard Deviation 0.073
Cohort 1: Surgery CohortChange From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-18 as Assessed by Flow CytometryCD8+CD69+GrzA+GrzB+Prf+, baseline0.00 cells/million T-cellsStandard Deviation 0
Cohort 1: Surgery CohortChange From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-18 as Assessed by Flow CytometryCD8+CD69+GrzA+GrzB+Prf+, CFB Week 2 post last dose0.20 cells/million T-cellsStandard Deviation 0.283
Cohort 1: Surgery CohortChange From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-18 as Assessed by Flow CytometryCD8+CD38+GrzA+GrzB+Prf+, baseline0.00 cells/million T-cellsStandard Deviation 0
Cohort 1: Surgery CohortChange From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-18 as Assessed by Flow CytometryCD8+CD38+GrzA+GrzB+Prf+, CFB Week 2 post last dose0.73 cells/million T-cellsStandard Deviation 0.841
Cohort 2: ChemoradiationChange From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-18 as Assessed by Flow CytometryCD8+CD38+GrzA+GrzB+Prf+, baseline0.06 cells/million T-cellsStandard Deviation 0.135
Cohort 2: ChemoradiationChange From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-18 as Assessed by Flow CytometryCD8+CD137+GrzA+GrzB+Prf+, baseline0.05 cells/million T-cellsStandard Deviation 0.07
Cohort 2: ChemoradiationChange From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-18 as Assessed by Flow CytometryCD8+CD69+GrzA+GrzB+Prf+, CFB Week 2 post last dose0.34 cells/million T-cellsStandard Deviation 0.54
Cohort 2: ChemoradiationChange From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-18 as Assessed by Flow CytometryCD8+CD137+GrzA+GrzB+Prf+,CFB Week 2 post last dose0.07 cells/million T-cellsStandard Deviation 0.089
Cohort 2: ChemoradiationChange From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-18 as Assessed by Flow CytometryCD8+CD38+GrzA+GrzB+Prf+, CFB Week 2 post last dose0.36 cells/million T-cellsStandard Deviation 0.552
Cohort 2: ChemoradiationChange From Baseline (CFB) in CD8+ T-Cell Responses Specific for HPV-18 as Assessed by Flow CytometryCD8+CD69+GrzA+GrzB+Prf+, baseline0.10 cells/million T-cellsStandard Deviation 0.158
Secondary

Change From Baseline (CFB) in Combined HPV-16 and HPV-18 E6 and E7 Antigen-Specific Spot-Forming Units Per Million Peripheral Blood Mononuclear Cell (SFU/10^6 PBMC) as Assessed by Enzyme-Linked Immunosorbent Spot-Forming Assay (ELISpot)

Time frame: Baseline up to 6 months post last dose

Population: ANoD population included all participants who received their assigned number of doses of study treatment plus EP. Number analyzed is the number of participants with data available for analysis at a specified time-point.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Surgery CohortChange From Baseline (CFB) in Combined HPV-16 and HPV-18 E6 and E7 Antigen-Specific Spot-Forming Units Per Million Peripheral Blood Mononuclear Cell (SFU/10^6 PBMC) as Assessed by Enzyme-Linked Immunosorbent Spot-Forming Assay (ELISpot)Baseline20.3 SFU/10^6 PBMCStandard Deviation 22.65
Cohort 1: Surgery CohortChange From Baseline (CFB) in Combined HPV-16 and HPV-18 E6 and E7 Antigen-Specific Spot-Forming Units Per Million Peripheral Blood Mononuclear Cell (SFU/10^6 PBMC) as Assessed by Enzyme-Linked Immunosorbent Spot-Forming Assay (ELISpot)CFB at 2nd dose24.2 SFU/10^6 PBMCStandard Deviation 34.56
Cohort 1: Surgery CohortChange From Baseline (CFB) in Combined HPV-16 and HPV-18 E6 and E7 Antigen-Specific Spot-Forming Units Per Million Peripheral Blood Mononuclear Cell (SFU/10^6 PBMC) as Assessed by Enzyme-Linked Immunosorbent Spot-Forming Assay (ELISpot)CFB at 3rd dose15.0 SFU/10^6 PBMCStandard Deviation 17.54
Cohort 1: Surgery CohortChange From Baseline (CFB) in Combined HPV-16 and HPV-18 E6 and E7 Antigen-Specific Spot-Forming Units Per Million Peripheral Blood Mononuclear Cell (SFU/10^6 PBMC) as Assessed by Enzyme-Linked Immunosorbent Spot-Forming Assay (ELISpot)CFB at 4th dose50.3 SFU/10^6 PBMCStandard Deviation 49.06
Cohort 1: Surgery CohortChange From Baseline (CFB) in Combined HPV-16 and HPV-18 E6 and E7 Antigen-Specific Spot-Forming Units Per Million Peripheral Blood Mononuclear Cell (SFU/10^6 PBMC) as Assessed by Enzyme-Linked Immunosorbent Spot-Forming Assay (ELISpot)CFB at Week 2 post last dose68.3 SFU/10^6 PBMCStandard Deviation 63.98
Cohort 1: Surgery CohortChange From Baseline (CFB) in Combined HPV-16 and HPV-18 E6 and E7 Antigen-Specific Spot-Forming Units Per Million Peripheral Blood Mononuclear Cell (SFU/10^6 PBMC) as Assessed by Enzyme-Linked Immunosorbent Spot-Forming Assay (ELISpot)CFB at 1st long term follow-up182.2 SFU/10^6 PBMCStandard Deviation 211.31
Cohort 1: Surgery CohortChange From Baseline (CFB) in Combined HPV-16 and HPV-18 E6 and E7 Antigen-Specific Spot-Forming Units Per Million Peripheral Blood Mononuclear Cell (SFU/10^6 PBMC) as Assessed by Enzyme-Linked Immunosorbent Spot-Forming Assay (ELISpot)CFB at 2nd long term follow-up102.3 SFU/10^6 PBMCStandard Deviation 140.03
Cohort 1: Surgery CohortChange From Baseline (CFB) in Combined HPV-16 and HPV-18 E6 and E7 Antigen-Specific Spot-Forming Units Per Million Peripheral Blood Mononuclear Cell (SFU/10^6 PBMC) as Assessed by Enzyme-Linked Immunosorbent Spot-Forming Assay (ELISpot)CFB at 3rd long term follow-up127.6 SFU/10^6 PBMCStandard Deviation 3.46
Cohort 1: Surgery CohortChange From Baseline (CFB) in Combined HPV-16 and HPV-18 E6 and E7 Antigen-Specific Spot-Forming Units Per Million Peripheral Blood Mononuclear Cell (SFU/10^6 PBMC) as Assessed by Enzyme-Linked Immunosorbent Spot-Forming Assay (ELISpot)CFB at 4th long term follow-up41.4 SFU/10^6 PBMC
Cohort 1: Surgery CohortChange From Baseline (CFB) in Combined HPV-16 and HPV-18 E6 and E7 Antigen-Specific Spot-Forming Units Per Million Peripheral Blood Mononuclear Cell (SFU/10^6 PBMC) as Assessed by Enzyme-Linked Immunosorbent Spot-Forming Assay (ELISpot)CFB at 5th long term follow-up129.1 SFU/10^6 PBMCStandard Deviation 19.87
Cohort 1: Surgery CohortChange From Baseline (CFB) in Combined HPV-16 and HPV-18 E6 and E7 Antigen-Specific Spot-Forming Units Per Million Peripheral Blood Mononuclear Cell (SFU/10^6 PBMC) as Assessed by Enzyme-Linked Immunosorbent Spot-Forming Assay (ELISpot)CFB at 6th long term follow-up141.7 SFU/10^6 PBMC
Cohort 1: Surgery CohortChange From Baseline (CFB) in Combined HPV-16 and HPV-18 E6 and E7 Antigen-Specific Spot-Forming Units Per Million Peripheral Blood Mononuclear Cell (SFU/10^6 PBMC) as Assessed by Enzyme-Linked Immunosorbent Spot-Forming Assay (ELISpot)CFB at follow-up Week 2 post-surgery154.2 SFU/10^6 PBMCStandard Deviation 168.5
Cohort 1: Surgery CohortChange From Baseline (CFB) in Combined HPV-16 and HPV-18 E6 and E7 Antigen-Specific Spot-Forming Units Per Million Peripheral Blood Mononuclear Cell (SFU/10^6 PBMC) as Assessed by Enzyme-Linked Immunosorbent Spot-Forming Assay (ELISpot)CFB at end of study follow-up50.0 SFU/10^6 PBMCStandard Deviation 42.75
Cohort 2: ChemoradiationChange From Baseline (CFB) in Combined HPV-16 and HPV-18 E6 and E7 Antigen-Specific Spot-Forming Units Per Million Peripheral Blood Mononuclear Cell (SFU/10^6 PBMC) as Assessed by Enzyme-Linked Immunosorbent Spot-Forming Assay (ELISpot)Baseline11.7 SFU/10^6 PBMCStandard Deviation 10.25
Cohort 2: ChemoradiationChange From Baseline (CFB) in Combined HPV-16 and HPV-18 E6 and E7 Antigen-Specific Spot-Forming Units Per Million Peripheral Blood Mononuclear Cell (SFU/10^6 PBMC) as Assessed by Enzyme-Linked Immunosorbent Spot-Forming Assay (ELISpot)CFB at 2nd long term follow-up151.1 SFU/10^6 PBMCStandard Deviation 94.32
Cohort 2: ChemoradiationChange From Baseline (CFB) in Combined HPV-16 and HPV-18 E6 and E7 Antigen-Specific Spot-Forming Units Per Million Peripheral Blood Mononuclear Cell (SFU/10^6 PBMC) as Assessed by Enzyme-Linked Immunosorbent Spot-Forming Assay (ELISpot)CFB at 2nd dose96.9 SFU/10^6 PBMCStandard Deviation 118.41
Cohort 2: ChemoradiationChange From Baseline (CFB) in Combined HPV-16 and HPV-18 E6 and E7 Antigen-Specific Spot-Forming Units Per Million Peripheral Blood Mononuclear Cell (SFU/10^6 PBMC) as Assessed by Enzyme-Linked Immunosorbent Spot-Forming Assay (ELISpot)CFB at 5th long term follow-up0.0 SFU/10^6 PBMC
Cohort 2: ChemoradiationChange From Baseline (CFB) in Combined HPV-16 and HPV-18 E6 and E7 Antigen-Specific Spot-Forming Units Per Million Peripheral Blood Mononuclear Cell (SFU/10^6 PBMC) as Assessed by Enzyme-Linked Immunosorbent Spot-Forming Assay (ELISpot)CFB at 3rd dose158.9 SFU/10^6 PBMCStandard Deviation 231.73
Cohort 2: ChemoradiationChange From Baseline (CFB) in Combined HPV-16 and HPV-18 E6 and E7 Antigen-Specific Spot-Forming Units Per Million Peripheral Blood Mononuclear Cell (SFU/10^6 PBMC) as Assessed by Enzyme-Linked Immunosorbent Spot-Forming Assay (ELISpot)CFB at 3rd long term follow-up113.2 SFU/10^6 PBMCStandard Deviation 153.59
Cohort 2: ChemoradiationChange From Baseline (CFB) in Combined HPV-16 and HPV-18 E6 and E7 Antigen-Specific Spot-Forming Units Per Million Peripheral Blood Mononuclear Cell (SFU/10^6 PBMC) as Assessed by Enzyme-Linked Immunosorbent Spot-Forming Assay (ELISpot)CFB at 4th dose263.6 SFU/10^6 PBMCStandard Deviation 597.8
Cohort 2: ChemoradiationChange From Baseline (CFB) in Combined HPV-16 and HPV-18 E6 and E7 Antigen-Specific Spot-Forming Units Per Million Peripheral Blood Mononuclear Cell (SFU/10^6 PBMC) as Assessed by Enzyme-Linked Immunosorbent Spot-Forming Assay (ELISpot)CFB at end of study follow-up70.5 SFU/10^6 PBMCStandard Deviation 87.09
Cohort 2: ChemoradiationChange From Baseline (CFB) in Combined HPV-16 and HPV-18 E6 and E7 Antigen-Specific Spot-Forming Units Per Million Peripheral Blood Mononuclear Cell (SFU/10^6 PBMC) as Assessed by Enzyme-Linked Immunosorbent Spot-Forming Assay (ELISpot)CFB at Week 2 post last dose354.7 SFU/10^6 PBMCStandard Deviation 632.29
Cohort 2: ChemoradiationChange From Baseline (CFB) in Combined HPV-16 and HPV-18 E6 and E7 Antigen-Specific Spot-Forming Units Per Million Peripheral Blood Mononuclear Cell (SFU/10^6 PBMC) as Assessed by Enzyme-Linked Immunosorbent Spot-Forming Assay (ELISpot)CFB at 4th long term follow-up29.8 SFU/10^6 PBMCStandard Deviation 28.11
Cohort 2: ChemoradiationChange From Baseline (CFB) in Combined HPV-16 and HPV-18 E6 and E7 Antigen-Specific Spot-Forming Units Per Million Peripheral Blood Mononuclear Cell (SFU/10^6 PBMC) as Assessed by Enzyme-Linked Immunosorbent Spot-Forming Assay (ELISpot)CFB at 1st long term follow-up128.8 SFU/10^6 PBMCStandard Deviation 132.05
Cohort 2: ChemoradiationChange From Baseline (CFB) in Combined HPV-16 and HPV-18 E6 and E7 Antigen-Specific Spot-Forming Units Per Million Peripheral Blood Mononuclear Cell (SFU/10^6 PBMC) as Assessed by Enzyme-Linked Immunosorbent Spot-Forming Assay (ELISpot)CFB at 6th long term follow-up11.7 SFU/10^6 PBMC
Secondary

E6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)

Titers for HPV-16 and HPV-18 E6- and E7-specific antibodies were assessed by ELISA.

Time frame: Up to 6 months post last dose

Population: Assigned Number of Doses (ANoD) population included all participants who received their assigned number of doses of study treatment plus EP. Number analyzed is the number of participants with data available for analysis at a specified time-point.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, 1st long term follow-up1.3 log titerStandard Deviation 2.51
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, 2nd dose0.0 log titerStandard Deviation 0
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, surgery0.0 log titerStandard Deviation 0
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, 3rd dose0.0 log titerStandard Deviation 0
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, 2nd long term follow-up0.0 log titerStandard Deviation 0
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, 4th dose1.0 log titerStandard Deviation 2.24
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, 3rd dose2.6 log titerStandard Deviation 2.39
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, 1st long term follow-up1.3 log titerStandard Deviation 2.51
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, 3rd long term follow-up0.0 log titerStandard Deviation 0
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, 2nd long term follow-up1.0 log titerStandard Deviation 2.24
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, 1st dose3.6 log titerStandard Deviation 4.53
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, 3rd long term follow-up0.0 log titerStandard Deviation 0
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, 4th long term follow-up0.0 log titerStandard Deviation 0
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, 4th long term follow-up0.0 log titerStandard Deviation 0
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, 4th dose2.4 log titerStandard Deviation 3.44
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, 5th long term follow-up0.0 log titerStandard Deviation 0
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, 5th long term follow-up0.0 log titerStandard Deviation 0
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, Week 2 post last dose0.0 log titerStandard Deviation 0
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, initial surgery0.0 log titerStandard Deviation 0
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, follow-up Week 2 post-surgery0.0 log titerStandard Deviation 0
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, optional surgery0.0 log titer
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, unscheduled visit0.0 log titer
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, end of study follow-up1.5 log titerStandard Deviation 3.05
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, Week 2 post last dose2.8 log titerStandard Deviation 3.48
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, initial surgery1.0 log titerStandard Deviation 2.24
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, surgery0.0 log titerStandard Deviation 0
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, follow-up Week 2 post-surgery4.6 log titerStandard Deviation 1.27
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, optional surgery0.0 log titer
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, unscheduled visit3.9 log titer
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, end of study follow-up0.0 log titerStandard Deviation 0
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, 2nd dose2.2 log titerStandard Deviation 2.61
Cohort 1: Surgery CohortE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, 1st dose0.0 log titerStandard Deviation 0
Cohort 2: ChemoradiationE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, end of study follow-up2.8 log titerStandard Deviation 3.01
Cohort 2: ChemoradiationE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, 1st dose0.4 log titerStandard Deviation 1.18
Cohort 2: ChemoradiationE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, 2nd dose0.0 log titerStandard Deviation 0
Cohort 2: ChemoradiationE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, 3rd dose1.2 log titerStandard Deviation 2.33
Cohort 2: ChemoradiationE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, 4th dose1.0 log titerStandard Deviation 2.42
Cohort 2: ChemoradiationE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, Week 2 post last dose2.3 log titerStandard Deviation 2.91
Cohort 2: ChemoradiationE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, 1st long term follow-up1.0 log titerStandard Deviation 2.42
Cohort 2: ChemoradiationE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, 2nd long term follow-up1.2 log titerStandard Deviation 2.63
Cohort 2: ChemoradiationE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, 3rd long term follow-up0.8 log titerStandard Deviation 2.4
Cohort 2: ChemoradiationE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, 4th long term follow-up1.4 log titerStandard Deviation 3.39
Cohort 2: ChemoradiationE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, 5th long term follow-up0.0 log titerStandard Deviation 0
Cohort 2: ChemoradiationE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, 6th long term follow-up3.1 log titerStandard Deviation 4.32
Cohort 2: ChemoradiationE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-16 ELISA titer, end of study follow-up0.0 log titerStandard Deviation 0
Cohort 2: ChemoradiationE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, 1st dose0.4 log titerStandard Deviation 1.18
Cohort 2: ChemoradiationE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, 2nd dose0.7 log titerStandard Deviation 1.69
Cohort 2: ChemoradiationE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, 3rd dose0.8 log titerStandard Deviation 1.88
Cohort 2: ChemoradiationE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, Week 2 post last dose3.0 log titerStandard Deviation 3.25
Cohort 2: ChemoradiationE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, 1st long term follow-up2.0 log titerStandard Deviation 3.04
Cohort 2: ChemoradiationE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, 2nd long term follow-up1.3 log titerStandard Deviation 2.09
Cohort 2: ChemoradiationE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, 3rd long term follow-up1.1 log titerStandard Deviation 2.28
Cohort 2: ChemoradiationE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, 4th long term follow-up1.7 log titerStandard Deviation 2.68
Cohort 2: ChemoradiationE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, 5th long term follow-up1.7 log titerStandard Deviation 2.89
Cohort 2: ChemoradiationE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, 6th long term follow-up6.1 log titerStandard Deviation 0
Cohort 2: ChemoradiationE6 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by Enzyme-linked Immunosorbent Assay (ELISA)HPV-18 ELISA titer, 4th dose1.2 log titerStandard Deviation 2.12
Secondary

E7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISA

Titers for HPV-16 and HPV-18 E6- and E7-specific antibodies were assessed by ELISA.

Time frame: Up to 6 months post last dose

Population: ANoD population included all participants who received their assigned number of doses of study treatment plus EP. Number analyzed is the number of participants with data available for analysis at a specified time-point.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16 ELISA titer, 3rd dose1.2 log titerStandard Deviation 2.73
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, 2nd dose2.5 log titerStandard Deviation 2.89
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16 ELISA titer, 2nd long term follow-up0.8 log titerStandard Deviation 1.75
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, 3rd dose2.7 log titerStandard Deviation 3.67
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, initial surgery0.0 log titerStandard Deviation 0
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, 4th dose4.5 log titerStandard Deviation 4.17
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16 ELISA titer, 3rd long term follow-up0.0 log titerStandard Deviation 0
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, Week 2 post last dose8.0 log titerStandard Deviation 1.65
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16 ELISA titer, 4th dose3.0 log titerStandard Deviation 3.06
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, 1st long term follow-up6.9 log titerStandard Deviation 2.44
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16 ELISA titer, 4th long term follow-up0.0 log titerStandard Deviation 0
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, 2nd long term follow-up5.8 log titerStandard Deviation 3.98
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16 ELISA titer, 2nd dose0.0 log titerStandard Deviation 0
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, 3rd long term follow-up2.0 log titerStandard Deviation 2.77
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16 ELISA titer, 5th long term follow-up0.0 log titerStandard Deviation 0
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, 4th long term follow-up0.0 log titerStandard Deviation 0
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16 ELISA titer, Week 2 post last dose2.8 log titerStandard Deviation 3.48
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, 5th long term follow-up0.0 log titerStandard Deviation 0
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, surgery2.4 log titerStandard Deviation 4.7
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, follow-up Week 2 post-surgery1.3 log titerStandard Deviation 2.26
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, optional surgery0.0 log titer
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, unscheduled visit0.0 log titer
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, end of study follow-up4.4 log titerStandard Deviation 5.29
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16, 1st dose0.0 log titerStandard Deviation 0
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16 ELISA titer, initial surgery0.0 log titerStandard Deviation 0
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16 ELISA titer, surgery0.0 log titerStandard Deviation 0
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16 ELISA titer, follow-up Week 2 post-surgery0.0 log titerStandard Deviation 0
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16 ELISA titer, optional surgery0.0 log titer
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16 ELISA titer, unscheduled visit0.0 log titer
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16 ELISA titer, end of study follow-up0.0 log titerStandard Deviation 0
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16 ELISA titer, 1st long term follow-up2.5 log titerStandard Deviation 3.03
Cohort 1: Surgery CohortE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, 1st dose0.0 log titerStandard Deviation 0
Cohort 2: ChemoradiationE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, end of study follow-up4.6 log titerStandard Deviation 3.03
Cohort 2: ChemoradiationE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, 6th long term follow-up8.3 log titerStandard Deviation 0
Cohort 2: ChemoradiationE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16, 1st dose0.4 log titerStandard Deviation 1.18
Cohort 2: ChemoradiationE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16 ELISA titer, 2nd dose0.5 log titerStandard Deviation 1.69
Cohort 2: ChemoradiationE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16 ELISA titer, 3rd dose2.1 log titerStandard Deviation 2.85
Cohort 2: ChemoradiationE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16 ELISA titer, 4th dose3.0 log titerStandard Deviation 3.41
Cohort 2: ChemoradiationE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16 ELISA titer, Week 2 post last dose3.3 log titerStandard Deviation 4.09
Cohort 2: ChemoradiationE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16 ELISA titer, 1st long term follow-up2.8 log titerStandard Deviation 3.63
Cohort 2: ChemoradiationE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16 ELISA titer, 2nd long term follow-up1.6 log titerStandard Deviation 3.28
Cohort 2: ChemoradiationE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16 ELISA titer, 3rd long term follow-up1.5 log titerStandard Deviation 3.24
Cohort 2: ChemoradiationE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16 ELISA titer, 4th long term follow-up0.8 log titerStandard Deviation 2.05
Cohort 2: ChemoradiationE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16 ELISA titer, 5th long term follow-up3.1 log titerStandard Deviation 5.43
Cohort 2: ChemoradiationE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16 ELISA titer, 6th long term follow-up4.2 log titerStandard Deviation 5.87
Cohort 2: ChemoradiationE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-16 ELISA titer, end of study follow-up1.3 log titerStandard Deviation 2.45
Cohort 2: ChemoradiationE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, 1st dose0.5 log titerStandard Deviation 1.51
Cohort 2: ChemoradiationE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, 2nd dose0.3 log titerStandard Deviation 1.08
Cohort 2: ChemoradiationE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, 3rd dose1.3 log titerStandard Deviation 2.03
Cohort 2: ChemoradiationE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, 4th dose3.0 log titerStandard Deviation 3.21
Cohort 2: ChemoradiationE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, Week 2 post last dose4.2 log titerStandard Deviation 2.83
Cohort 2: ChemoradiationE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, 1st long term follow-up4.5 log titerStandard Deviation 3.41
Cohort 2: ChemoradiationE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, 2nd long term follow-up1.8 log titerStandard Deviation 3.13
Cohort 2: ChemoradiationE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, 3rd long term follow-up3.1 log titerStandard Deviation 3.79
Cohort 2: ChemoradiationE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, 4th long term follow-up2.5 log titerStandard Deviation 2.83
Cohort 2: ChemoradiationE7 Antigen Specific Anti-HPV-16/18 Antibody Titers Assessed by ELISAHPV-18 ELISA titer, 5th long term follow-up5.5 log titerStandard Deviation 4.8
Secondary

Mean Difference in CD8/FoxP3 Ratio in Presurgical and Surgical Tumor Tissue Samples of Cohort I as Assessed by Immunohistochemistry (IHC)

The difference in means (post-surgery minus screening) for the CD8/FoxP3 ratio was analyzed using immunohistochemistry staining techniques.

Time frame: At screening and post-surgery

Population: ANoD population included all participants who received their assigned number of doses of study treatment plus EP.

ArmMeasureValue (MEAN)
Cohort 1: Surgery CohortMean Difference in CD8/FoxP3 Ratio in Presurgical and Surgical Tumor Tissue Samples of Cohort I as Assessed by Immunohistochemistry (IHC)0.2 ratio
Secondary

Mean Difference in Tumor Infiltrating Lymphocytes (TILs) in Presurgical and Surgical Tumor Tissue Samples of Cohort I as Assessed by Immunohistochemistry (IHC)

The difference in means (post-surgery minus screening) for tumor-infiltrating lymphocytes (TILs) such as CD8, FoxP3, and perforin was analyzed using immunohistochemistry staining techniques.

Time frame: At screening and post-surgery

Population: ANoD population included all participants who received their assigned number of doses of study treatment plus EP.

ArmMeasureGroupValue (MEAN)
Cohort 1: Surgery CohortMean Difference in Tumor Infiltrating Lymphocytes (TILs) in Presurgical and Surgical Tumor Tissue Samples of Cohort I as Assessed by Immunohistochemistry (IHC)CD8268.5 positive cells per square millimeter
Cohort 1: Surgery CohortMean Difference in Tumor Infiltrating Lymphocytes (TILs) in Presurgical and Surgical Tumor Tissue Samples of Cohort I as Assessed by Immunohistochemistry (IHC)FoxP3-79.8 positive cells per square millimeter
Cohort 1: Surgery CohortMean Difference in Tumor Infiltrating Lymphocytes (TILs) in Presurgical and Surgical Tumor Tissue Samples of Cohort I as Assessed by Immunohistochemistry (IHC)Perforin9.5 positive cells per square millimeter
Secondary

Phenotype of Cultured TILs

Time frame: Up to 6 months post last dose

Population: Data was not collected due to lack of recoverable samples sufficient for analysis

Source: ClinicalTrials.gov · Data processed: Feb 26, 2026