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Dendritic Cell Vaccination in Patients With Advanced Melanoma

Mature Dendritic Cell Vaccination Against Mutated Antigens in Patients With Advanced Melanoma

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03092453
Enrollment
5
Registered
2017-03-28
Start date
2017-05-01
Completion date
2023-03-31
Last updated
2024-12-24

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

Conditions

Melanoma

Brief summary

The purpose of this study is to investigate a method of using dendritic cells (a kind of white blood cell) as a vaccine to stimulate your own immune system to react to your melanoma cells.

Detailed description

This is a single arm open label trial that will assess the safety and tolerability of mature dendritic cell (mDC3/8) vaccine (primer and booster) in subjects with stage III and stage IV melanoma, followed by treatment with pembrolizumab (anti-PD-1 therapy). Eligible patients that provide written informed consent will undergo apheresis to collect blood mononuclear cells for vaccine production approximately 1 week prior to vaccine infusion. Each study subject will receive cyclophosphamide 300mg/m\^2 intravenously or by mouth 3 to 4 days prior to the vaccine dose, to deplete regulatory T cells. For each vaccine dose, all subjects will receive autologous dendritic cells pulsed with melanoma tumor-specific peptides. On Day 1, the subject will receive the primer vaccine dose; this will be followed by two booster vaccine doses at 6 weeks apart. Peripheral blood will be taken weekly to monitor the immune response to each peptide by tetramer assay. Re-staging will occur after the 3rd vaccine dose, along with tumor biopsy and second apheresis. Anti PD-1 therapy (standard of care) will commence 7-8 weeks after the subject's last dendritic cell vaccine.

Interventions

BIOLOGICALMature dendritic cell (DC) vaccine

Mature DC 7.5-15 million/peptide followed by 2 booster every six weeks of 1-5 million/peptide followed by standard of care anti PD-1 therapy.

DRUGCyclophosphamide 300mg/m^2

administered prior to subject's first DC dose

DRUGPembrolizumab

administered 7-8 weeks after subject's last DC dose

Sponsors

University of Pennsylvania
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Histologically confirmed stage III and stage IV M1a/M1b/M1c melanoma. Measurable disease is not required for enrollment eligibility and patients with completely resected disease are permitted. * Male or female patients age greater than or equal to 18 years * ECOG (Eastern Cooperative Oncology Group) performance status 0-2 * Required initial laboratory values (performed within 14 days prior to eligibility confirmation by physician-investigator): * WBC (white blood cells) \>3,000/mm3 * Hg (hemoglobin) greater than or equal to 9.0 gm/dl * Platelets \>75,000/mm3 * Serum Bilirubin \< 2.0 mg/dl * Serum Creatinine \< 2.0 mg/dl * Subjects of reproductive potential must agree to use a medically accepted birth control method during the trial and for at least two months following the trial. * Provide written informed consent.

Exclusion criteria

* Prior treatment with more than one line of cytotoxic chemotherapy; prior treatment with one line of cytotoxic chemotherapy is permitted. Prior treatment with targeted therapy (such as ipilimumab, anti-PD1, or BRAF + MEK inhibitor combination) is permitted. * Active untreated CNS (central nervous system) metastasis * Active infection * Prior malignancy (except non-melanoma skin cancer) within 3 years * Pregnant or nursing (lactating) women * Concurrent treatment with high-dose systemic corticosteroids; local (inhaled or topical) steroids are permitted * Known allergy to eggs * Prior history of uveitis or autoimmune inflammatory eye disease * Known positivity for hepatitis B antibody, hepatitis C antibody, or HIV antibody

Design outcomes

Primary

MeasureTime frameDescription
Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Screening through week 21Immune response measuring increased numbers of peptide specific T cells as calculated by the tetramer assay. The numbers of Peptide Specific T Cells are reported as the percent of CD8+ T cells that were p/HLA multimer positive for each antigen.
Safety and Tolerability of the Mature Dendritic Cell Vaccine (mDC3/8 Vaccines).End of Study visit (10-28 days after last DC vaccine)Safety endpoint is type and number of adverse events. Tolerability endpoint is subject's completion or withdrawal from study treatment.

Secondary

MeasureTime frameDescription
Clinical Response to the mDC3/8 Vaccine(s)At the End of Study Treatment visit (~10-28 Days after the last DC vaccine)using RECIST 1.1
Time to Progression Post-mDC3/8 Vaccine AdministrationUp to 30 weeks after the first mDC3/8 Vaccinebased on RECIST 1.1 criteria, until occurrence of a censoring event
Safety and Side Effect Profile of the Dendritic Cell Vaccine (mDC3/8 Vaccines) Administered to Patients Given After a Single Dose of Cyclophosphamide.End of Study visit (10-28 days after last DC vaccine)Assessed through collection of Adverse Events.

Countries

United States

Participant flow

Participants by arm

ArmCount
Mature Dendritic Cell (DC) Vaccine
Mature DC 7.5-15 million/peptide given day 1, every six weeks for 2 doses followed by standard of care anti PD-1 therapy Mature dendritic cell (DC) vaccine: Mature DC 7.5-15 million/peptide followed by 2 booster every six weeks of 1-5 million/peptide followed by standard of care anti PD-1 therapy. Cyclophosphamide 300mg/m\^2: administered prior to subject's first DC dose Pembrolizumab: administered 7-8 weeks after subject's last DC dose
5
Total5

Baseline characteristics

CharacteristicMature Dendritic Cell (DC) Vaccine
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
1 Participants
Age, Categorical
Between 18 and 65 years
4 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 Participants
Race (NIH/OMB)
Black or African American
0 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
5 Participants
Region of Enrollment
United States
5 participants
Sex: Female, Male
Female
2 Participants
Sex: Female, Male
Male
3 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 5
other
Total, other adverse events
5 / 5
serious
Total, serious adverse events
1 / 5

Outcome results

Primary

Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.

Immune response measuring increased numbers of peptide specific T cells as calculated by the tetramer assay. The numbers of Peptide Specific T Cells are reported as the percent of CD8+ T cells that were p/HLA multimer positive for each antigen.

Time frame: Screening through week 21

Population: Antigens for each subject may be different. Outcomes were not tested past week 21.

ArmMeasureGroupValue (NUMBER)
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-3, wk 210 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-4, wk 210 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B8-1, wk 14-150.32 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B8-3, wk 14-155.68 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B8-5, wk 14-150 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-1, wk 170 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-2, screening0 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-2, wk 170 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B8-1, screening0 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-3, wk 170 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B8-3, screening0.26 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-4, wk 170 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B8-4, screening0 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-5, wk 170 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-6, wk 170 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B8-5, screening0 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-7, wk 170 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B8-1, wk 170.5 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B8-3, wk 171.81 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B8-4, wk 170 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B8-5, wk 170 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-1, wk 190 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-1, Day 10 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-2, wk 190 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-4, Day 10 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-3, wk 190 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-4, wk 190 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-2, Day 10 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-5, wk 190 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-4, screening0 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-6, wk 190 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-7, wk 190 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B8-1, wk 190.32 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B8-3, wk 190.99 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B8-4, wk 190 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B8-5, wk 190 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-1, wk 210 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-3, Day 10 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-2, wk 210 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-1, screening0 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-5, wk 210 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-6, wk 210 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-7, wk 210 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B8-1, wk 211.4 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B8-3, wk 210.16 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B8-4, wk 210 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B8-5, wk 210 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-5, Day 10 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-5, screening0 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-6, Day 10 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B8-4, wk 14-150 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-7, Day 10 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B8-1, Day 10.4 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B8-3, Day 10.48 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B8-4, Day 10 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B8-5, Day 10 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-1, wk 14-150 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-2, wk 14-150 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-6, screening0 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-3, wk 14-150 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-3, screening0 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-4, wk 14-150 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-5, wk 14-150 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-6, wk 14-150 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-7, screening0 percent of CD8+ T cells
Subject 1Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-7, wk 14-150 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A31-2, wk 210 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A31-2, wk 190 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B15-2, wk 2134.7 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B15-1, wk 190 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B15-5, wk 2133.9 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B15-3, wk 2127.7 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A31-2, wk 170 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B15-1, wk 170 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B44-1, wk 2117.4 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B15-1, screening0 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B15-2, screening0 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B15-3, screening0 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B15-4, screening0 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B15-5, screening0 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B44-1, screening0 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A31-1, screening0 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A31-2, screening0 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B15-1, day 10 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B15-2, day 10 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B15-3, day 10 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B15-4, day 10 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B15-5, day 10 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B44-1, day 10 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A31-1, day 10 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A31-2, day 10 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B15-1, wk 140 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B15-2, wk 1435 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B15-3, wk 1427.2 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B15-4, wk 140 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B15-5, wk 1436.5 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B44-1, wk 1422.7 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A31-1, wk 140 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A31-2, wk 140 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A31-1, wk 210 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A31-1, wk 190 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B15-1, wk 210 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A31-1, wk 170 percent of CD8+ T cells
Subject 2Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen B15-4, wk 210 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-6, wk 210 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-1, screening0 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-2, screening0 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-3, screening0 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-4, screening0 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-5, screening0 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-6, screening0 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-7, screening0 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-1, Day 10 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-2, Day 10 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-3, Day 10 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-4, Day 10 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-5, Day 10 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-6, Day 10 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-1, wk 14-150 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-2, wk 14-150 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-3, wk 14-150 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-4, wk 14-150 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-6, wk 14-152.4 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-1, wk 170 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-2, wk 170 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-3, wk 170 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-4, wk 170 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-6, wk 170 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-1, wk 190 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-2, wk 190 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-3, wk 190 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-4, wk 190 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-5, wk 190 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-6, wk 190 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-1, wk 210 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-2, wk 210 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-3, wk 210 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-4, wk 210 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-5, wk 210 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-8, screening0 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-9, screening0 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-10, screening0 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-11, screening0 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-8, day 10 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-9, day 10 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-10, day 10 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-11, day 10 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-8, wk 140 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-9, wk 140 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-11, wk 1410.8 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-8, wk 170 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.0Antigen A3-9, wk 170 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-10, wk 170 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-11, wk 170 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-8, wk 190 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-9, wk 190 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-10, wk 190 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-11, wk 190 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-8, wk 210 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-9, wk 210 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-10, wk 210 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-11, wk 210 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-10, wk 140 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-5, wk 14-150 percent of CD8+ T cells
Subject 3Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-5, wk 170 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-13, day 10 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-10, day 10 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-12, wk 140 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-11, day 10 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-13, wk 141.48 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-8, wk 141.15 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-2, screening0 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-9, wk 141.08 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-10, wk 140.9 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-3, screening0 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-6, wk 14-150 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-4, wk 14-154.01 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-3, wk 14-150 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-2, wk 14-152.66 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-1, wk 14-150.86 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-6, Day 10 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-5, Day 10 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-4, Day 10 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-3, Day 10 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-2, Day 10 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-1, Day 10 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-6, screening0 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-5, screening0 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-4, screening0 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-11, wk 140.14 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-8, screening0 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-1, screening0 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-9, screening0 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-5, wk 14-150 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-10, screening0 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-12, screening0 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-11, screening0 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-13, screening0 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-8, day 10 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-12, day 10 percent of CD8+ T cells
Subject 4Immune Response Measuring Increased Numbers of Peptide Specific T Cells as Calculated by the Tetramer Assay.Antigen A3-9, day 10 percent of CD8+ T cells
Primary

Safety and Tolerability of the Mature Dendritic Cell Vaccine (mDC3/8 Vaccines).

Safety endpoint is type and number of adverse events. Tolerability endpoint is subject's completion or withdrawal from study treatment.

Time frame: End of Study visit (10-28 days after last DC vaccine)

Population: Safety component is entered in the Adverse Events section.

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Subject 1Safety and Tolerability of the Mature Dendritic Cell Vaccine (mDC3/8 Vaccines).Completed primary follow-up3 Participants
Subject 1Safety and Tolerability of the Mature Dendritic Cell Vaccine (mDC3/8 Vaccines).Did not complete primary follow-up2 Participants
Secondary

Clinical Response to the mDC3/8 Vaccine(s)

using RECIST 1.1

Time frame: At the End of Study Treatment visit (~10-28 Days after the last DC vaccine)

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Subject 1Clinical Response to the mDC3/8 Vaccine(s)Progressive disease2 Participants
Subject 1Clinical Response to the mDC3/8 Vaccine(s)Not evaluable3 Participants
Secondary

Safety and Side Effect Profile of the Dendritic Cell Vaccine (mDC3/8 Vaccines) Administered to Patients Given After a Single Dose of Cyclophosphamide.

Assessed through collection of Adverse Events.

Time frame: End of Study visit (10-28 days after last DC vaccine)

Population: These outcome measures are entered in the Adverse Events section.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Subject 1Safety and Side Effect Profile of the Dendritic Cell Vaccine (mDC3/8 Vaccines) Administered to Patients Given After a Single Dose of Cyclophosphamide.5 Participants
Secondary

Time to Progression Post-mDC3/8 Vaccine Administration

based on RECIST 1.1 criteria, until occurrence of a censoring event

Time frame: Up to 30 weeks after the first mDC3/8 Vaccine

Population: Results are presented per subject.

ArmMeasureGroupValue (NUMBER)
Subject 1Time to Progression Post-mDC3/8 Vaccine AdministrationSubject 1113 days
Subject 1Time to Progression Post-mDC3/8 Vaccine AdministrationSubject 2NA days
Subject 1Time to Progression Post-mDC3/8 Vaccine AdministrationSubject 3NA days
Subject 1Time to Progression Post-mDC3/8 Vaccine AdministrationSubject 4NA days
Subject 1Time to Progression Post-mDC3/8 Vaccine AdministrationSubject 580 days

Source: ClinicalTrials.gov · Data processed: Feb 21, 2026