This research study is studying a therapeutic vaccine, named DPX-E7, as a possible treatment for Human Papilloma Virus or HPV related head and neck, cervical or anal cancer (positive for HLA-A\*02).
This is a phase Ib/II clinical trial. DPX-E7 is a therapeutic vaccine, intended to treat HPV-related head and neck, cervical or anal cancer. DPX-E7 is an investigational vaccine and the FDA (the U.S. Food and Drug Administration) has not approved DPX-E7 vaccine as a treatment for any disease. DPX-E7 is being tested in humans for the first time. DPX-E7 is a kind of immunotherapy that will make the immune system to elicit an anti-tumor response by generating CD8+ T-cells. CD8+ T-cells play a very important role in fighting against viral infections
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
11
Therapeutic vaccine for the treatment of incurable HPV16-related oropharyngeal, cervical and anal cancer in HLA-A\*02 positive patients.
Cyclophosphamide is a medication primarily used in the management and treatment of neoplasms, including multiple myeloma, sarcoma, and breast cancer. Cyclophosphamide is a nitrogen mustard that exerts its anti-neoplastic effects through alkylation.
Dana-Farber Cancer Institute
Boston, Massachusetts, United States
Number of Participants With Dose Limiting Toxicity (DLT) [Phase 1b]
A DLT was defined as any grade 3 or greater adverse event at least possibly related to the study agent including injection site reactions; or grade 2 or greater allergic reactions which occur in a subject prior to day 50, will trigger DLT. In addition, to be considered as DLT, the adverse event must be considered at least possibly related to study treatment. Grade 3 or greater abnormal lab values lasting \<= 72 hours might be excluded as DLTs if there are no accompanying clinical signs and symptoms per investigator's discretion.
Time frame: Patients were followed for 50 days.
Grade 1-2 Treatment-Related AE Rate
The proportion of participants who experienced grade 1-2 treatment-related adverse events based on the Common Toxicity Criteria for Adverse Events Version 4.0 (CTCAEv4) as reported on case report forms.
Time frame: The median follow up was 2.92 months (range 1.25 - 5.88months).
Changes in CD8+ T Cells in Peripheral Blood and Tumor Tissue
'Responders' will be defined as patients with at least a two-fold increase in the number of CD 8+ T cells (dextramer, ELISpot or both methods) in the peripheral blood and tissue at the final analysis.
Time frame: Patients were followed 22 days.
Best Overall Response
Best Overall Response is the best response recorded from the start of the treatment until disease progression/recurrence (taking as reference for PD the smallest measurements recorded since the treatment started) based on modified RECIST 1.1 and irRECIST. Per irRECIST, CR was defined as disappearance of all lesions in two consecutive observations not less than four weeks apart; PR was defined as greater than or equal to 50% decrease in tumor burden compared with baseline in two observations at least four weeks apart.
Time frame: The median follow up was 2.92 months (range 1.25 - 5.88months).
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Median Overall Survival
Overall survival based on the Kaplan-Meier method is defined as the time the start of treatment to death. Participants alive are censored at the last date of contact (including lost-to-follow-up) or at the date of withdrawal of consent, if relevant.
Time frame: The median follow up was 4.8 months (range 1.6 - 14.9 months).
Median Progression-Free Survival
PFS is defined as the duration of time from study entry to documented disease progression (PD) requiring removal from the study or death. Participants alive without PD were censored at the earliest of the date of the last disease evaluation or start of new anticancer therapy. Per RECIST 1.1 for target lesions: PD is at least a 20% increase in sum LD, taking as reference the smallest sum on study or the appearance of one or more new lesions. For non-target lesions, progression-free means no new lesions or unequivocal progression on existing non-target lesions or not evaluated.
Time frame: The median follow up was 4.8 months (range 1.6 - 14.9 months).
Time to Progression (TTP)
TTP is defined as the duration of time from study entry to documented disease progression (PD) requiring removal from the study. Participants alive without PD were censored at the earliest of the date of the last disease evaluation. Per RECIST 1.1 for target lesions: PD is at least a 20% increase in sum LD, taking as reference the smallest sum on study or the appearance of one or more new lesions. For non-target lesions, progression-free means no new lesions or unequivocal progression on existing non-target lesions or not evaluated.
Time frame: The median follow up was 4.8 months (range 1.6 - 14.9 months).