Trial Outcomes & Findings for Neoadjuvant PROSTVAC-VF With or Without Ipilimumab for Prostate Cancer (NCT NCT02506114)

NCT ID: NCT02506114

Last Updated: 2021-11-24

Results Overview

The proportion of participants who demonstrated a positive response following neoadjuvant therapy as measured by change from baseline in CD3+ T cell infiltration within prostate tumor tissue by immunohistochemistry (IHC) assessment following treatment will be reported. The change in the number of CD3+ T cell infiltration within prostate tissue between the biopsy and radical prostatectomy (RP) specimen will be quantified using immunohistochemistry (IHC),with a positive result if there is \>=2 fold increase in the number of CD3+T cell infiltration.

Recruitment status

TERMINATED

Study phase

PHASE2

Target enrollment

15 participants

Primary outcome timeframe

Up to 2 years

Results posted on

2021-11-24

Participant Flow

Participant milestones

Participant milestones
Measure
Arm A: PROSTVAC-V/F
PROSTVAC-V: 2 x 10\^8pfu; subcutaneous; Day 1. PROSTVAC-F: 1 x 10\^9pfu; subcutaneous; Days 15, and 36.
Arm B: Ipilimumab Montherapy
Ipilimumab: 3 mg/kg; intravenously; Days 1 and 21.
Arm C: Combined PROSTVAC-V/F + Ipilimumab
PROSTVAC-V: 2 x 10\^8pfu; subcutaneous; Day 1. PROSTVAC-F: 1 x 10\^9pfu; subcutaneous; Days 15, and 36. Ipilimumab: 3 mg/kg; intravenously; Days 15 and 36.
Overall Study
STARTED
5
4
6
Overall Study
COMPLETED
5
4
6
Overall Study
NOT COMPLETED
0
0
0

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

Neoadjuvant PROSTVAC-VF With or Without Ipilimumab for Prostate Cancer

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Arm A: PROSTVAC-V/F
n=5 Participants
PROSTVAC-V: 2 x 10\^8pfu; subcutaneous; Day 1. PROSTVAC-F: 1 x 10\^9pfu; subcutaneous; Days 15, and 36.
Arm B: Ipilimumab Monotherapy
n=4 Participants
Ipilimumab: 3 mg/kg; intravenously; Days 1 and 21.
Arm C: Combined PROSTVAC-V/F + Ipilimumab
n=6 Participants
PROSTVAC-V: 2 x 10\^8pfu; subcutaneous; Day 1. PROSTVAC-F: 1 x 10\^9pfu; subcutaneous; Days 15, and 36. Ipilimumab: 3 mg/kg; intravenously; Days 15 and 36.
Total
n=15 Participants
Total of all reporting groups
Region of Enrollment
United States
5 participants
n=5 Participants
4 participants
n=7 Participants
6 participants
n=5 Participants
15 participants
n=4 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Race (NIH/OMB)
Asian
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Race (NIH/OMB)
Black or African American
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Race (NIH/OMB)
White
5 Participants
n=5 Participants
3 Participants
n=7 Participants
4 Participants
n=5 Participants
12 Participants
n=4 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
1 Participants
n=7 Participants
2 Participants
n=5 Participants
3 Participants
n=4 Participants
Age, Customized
50-59 years old
1 Participants
n=5 Participants
0 Participants
n=7 Participants
2 Participants
n=5 Participants
3 Participants
n=4 Participants
Age, Customized
60-69 years old
1 Participants
n=5 Participants
2 Participants
n=7 Participants
3 Participants
n=5 Participants
6 Participants
n=4 Participants
Age, Customized
70-79 years old
3 Participants
n=5 Participants
2 Participants
n=7 Participants
1 Participants
n=5 Participants
6 Participants
n=4 Participants
Sex: Female, Male
Female
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Sex: Female, Male
Male
5 Participants
n=5 Participants
4 Participants
n=7 Participants
6 Participants
n=5 Participants
15 Participants
n=4 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
n=5 Participants
0 Participants
n=7 Participants
2 Participants
n=5 Participants
2 Participants
n=4 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
5 Participants
n=5 Participants
4 Participants
n=7 Participants
4 Participants
n=5 Participants
13 Participants
n=4 Participants
Total Gleason Score
Gleason Score = 6
0 Participants
n=5 Participants
0 Participants
n=7 Participants
1 Participants
n=5 Participants
1 Participants
n=4 Participants
Total Gleason Score
Gleason Score = 7
3 Participants
n=5 Participants
1 Participants
n=7 Participants
4 Participants
n=5 Participants
8 Participants
n=4 Participants
Total Gleason Score
Gleason Score = 8
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Total Gleason Score
Gleason Score = 9
2 Participants
n=5 Participants
3 Participants
n=7 Participants
1 Participants
n=5 Participants
6 Participants
n=4 Participants

PRIMARY outcome

Timeframe: Up to 2 years

Population: Few participants had evaluable labs for this outcome.

The proportion of participants who demonstrated a positive response following neoadjuvant therapy as measured by change from baseline in CD3+ T cell infiltration within prostate tumor tissue by immunohistochemistry (IHC) assessment following treatment will be reported. The change in the number of CD3+ T cell infiltration within prostate tissue between the biopsy and radical prostatectomy (RP) specimen will be quantified using immunohistochemistry (IHC),with a positive result if there is \>=2 fold increase in the number of CD3+T cell infiltration.

Outcome measures

Outcome measures
Measure
Arm A: PROSTVAC-V/F
n=2 Participants
PROSTVAC-V: 2 x 10\^8pfu; subcutaneous; Day 1. PROSTVAC-F: 1 x 10\^9pfu; subcutaneous; Days 15, and 36.
Arm B: Ipilimumab Monotherapy
n=3 Participants
Ipilimumab: 3 mg/kg; intravenously; Days 1 and 21.
Arm C: Combined PROSTVAC-V/F + Ipilimumab
n=3 Participants
PROSTVAC-V: 2 x 10\^8pfu; subcutaneous; Day 1. PROSTVAC-F: 1 x 10\^9pfu; subcutaneous; Days 15, and 36. Ipilimumab: 3 mg/kg; intravenously; Days 15 and 36.
Proportion of Participants With Positive CD3+ T Cell Immune Response
0 proportion of participants
0.33 proportion of participants
0 proportion of participants

SECONDARY outcome

Timeframe: Up to 2 years

Population: Few participants had evaluable labs for this outcome.

The proportion of participants who demonstrated any change in the number of infiltrating T cells/μm2 of CD3 within the prostatic tumor tissue from the diagnostic core biopsy specimens to the post treatment prostatectomy tissue specimens will be assessed, based upon IHC analysis following neoadjuvant PROSTVAC, ipilimumab, or the combination of the two treatments.

Outcome measures

Outcome measures
Measure
Arm A: PROSTVAC-V/F
n=2 Participants
PROSTVAC-V: 2 x 10\^8pfu; subcutaneous; Day 1. PROSTVAC-F: 1 x 10\^9pfu; subcutaneous; Days 15, and 36.
Arm B: Ipilimumab Monotherapy
n=3 Participants
Ipilimumab: 3 mg/kg; intravenously; Days 1 and 21.
Arm C: Combined PROSTVAC-V/F + Ipilimumab
n=3 Participants
PROSTVAC-V: 2 x 10\^8pfu; subcutaneous; Day 1. PROSTVAC-F: 1 x 10\^9pfu; subcutaneous; Days 15, and 36. Ipilimumab: 3 mg/kg; intravenously; Days 15 and 36.
Proportion of Participants With Any Positive Change in Immunologic Infiltration (CD3)
0 proportion of participants
0.667 proportion of participants
0 proportion of participants

SECONDARY outcome

Timeframe: Up to 2 years

The proportion of participants who demonstrated any change in the number of circulating effector T cells/μm2 within the prostatic tumor tissue from the diagnostic core biopsy specimens to the post treatment prostatectomy tissue specimens will be assessed, based upon IHC analysis following neoadjuvant PROSTVAC, ipilimumab, or the combination by flow cytometry assessment of peripheral blood mononuclear cells

Outcome measures

Outcome measures
Measure
Arm A: PROSTVAC-V/F
n=5 Participants
PROSTVAC-V: 2 x 10\^8pfu; subcutaneous; Day 1. PROSTVAC-F: 1 x 10\^9pfu; subcutaneous; Days 15, and 36.
Arm B: Ipilimumab Monotherapy
n=4 Participants
Ipilimumab: 3 mg/kg; intravenously; Days 1 and 21.
Arm C: Combined PROSTVAC-V/F + Ipilimumab
n=6 Participants
PROSTVAC-V: 2 x 10\^8pfu; subcutaneous; Day 1. PROSTVAC-F: 1 x 10\^9pfu; subcutaneous; Days 15, and 36. Ipilimumab: 3 mg/kg; intravenously; Days 15 and 36.
Proportion of Participants With Any Positive Change in Circulating Effector T Cells
0.8 proportion of participants
1.0 proportion of participants
0.8333 proportion of participants

SECONDARY outcome

Timeframe: Up to 2 years

The proportion of participants who demonstrated a change in the number of Regulatory T Cells/μm2 within the prostatic tumor tissue from the diagnostic core biopsy specimens to the post treatment prostatectomy tissue specimens will be assessed, based upon IHC analysis following neoadjuvant PROSTVAC, ipilimumab, or the combination by flow cytometry assessment of peripheral blood mononuclear cells

Outcome measures

Outcome measures
Measure
Arm A: PROSTVAC-V/F
n=5 Participants
PROSTVAC-V: 2 x 10\^8pfu; subcutaneous; Day 1. PROSTVAC-F: 1 x 10\^9pfu; subcutaneous; Days 15, and 36.
Arm B: Ipilimumab Monotherapy
n=4 Participants
Ipilimumab: 3 mg/kg; intravenously; Days 1 and 21.
Arm C: Combined PROSTVAC-V/F + Ipilimumab
n=6 Participants
PROSTVAC-V: 2 x 10\^8pfu; subcutaneous; Day 1. PROSTVAC-F: 1 x 10\^9pfu; subcutaneous; Days 15, and 36. Ipilimumab: 3 mg/kg; intravenously; Days 15 and 36.
Proportion of Participants With a Positive Change in Regulatory T Cells
0.4 proportion of participants
1.0 proportion of participants
1.0 proportion of participants

SECONDARY outcome

Timeframe: Up to 2 years

Safety analyses will be performed for all participants having received at least one dose of study drug. The investigator will use the NCI Common Terminology Criteria for Adverse Events (CTCAE) v.4.03 for reporting the number of participants with treatment-related, non-hematologic, adverse events and modified criteria for hematologic adverse events defined as having an attribute of possible, probable, or definite by toxicity and treatment group.

Outcome measures

Outcome measures
Measure
Arm A: PROSTVAC-V/F
n=5 Participants
PROSTVAC-V: 2 x 10\^8pfu; subcutaneous; Day 1. PROSTVAC-F: 1 x 10\^9pfu; subcutaneous; Days 15, and 36.
Arm B: Ipilimumab Monotherapy
n=4 Participants
Ipilimumab: 3 mg/kg; intravenously; Days 1 and 21.
Arm C: Combined PROSTVAC-V/F + Ipilimumab
n=6 Participants
PROSTVAC-V: 2 x 10\^8pfu; subcutaneous; Day 1. PROSTVAC-F: 1 x 10\^9pfu; subcutaneous; Days 15, and 36. Ipilimumab: 3 mg/kg; intravenously; Days 15 and 36.
Number of Participants With Treatment-Related Adverse Events
Fatigue
1 participants
1 participants
0 participants
Number of Participants With Treatment-Related Adverse Events
Fever
1 participants
0 participants
0 participants
Number of Participants With Treatment-Related Adverse Events
Injection site reaction
2 participants
0 participants
1 participants
Number of Participants With Treatment-Related Adverse Events
Lipase increased
1 participants
0 participants
0 participants
Number of Participants With Treatment-Related Adverse Events
Pruritus
0 participants
1 participants
0 participants
Number of Participants With Treatment-Related Adverse Events
Dizziness
0 participants
0 participants
1 participants
Number of Participants With Treatment-Related Adverse Events
Skin and subcutaneous tissue disorders - Other
0 participants
0 participants
1 participants

Adverse Events

Arm A: PROSTVAC-V/F

Serious events: 0 serious events
Other events: 5 other events
Deaths: 0 deaths

Arm B: Ipilimumab Monotherapy

Serious events: 0 serious events
Other events: 3 other events
Deaths: 0 deaths

Arm C: Combined PROSTVAC-V/F + Ipilimumab

Serious events: 0 serious events
Other events: 5 other events
Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Other adverse events
Measure
Arm A: PROSTVAC-V/F
n=5 participants at risk
PROSTVAC-V: 2 x 10\^8pfu; subcutaneous; Day 1. PROSTVAC-F: 1 x 10\^9pfu; subcutaneous; Days 15, and 36.
Arm B: Ipilimumab Monotherapy
n=4 participants at risk
Ipilimumab: 3 mg/kg; intravenously; Days 1 and 21.
Arm C: Combined PROSTVAC-V/F + Ipilimumab
n=6 participants at risk
PROSTVAC-V: 2 x 10\^8pfu; subcutaneous; Day 1. PROSTVAC-F: 1 x 10\^9pfu; subcutaneous; Days 15, and 36. Ipilimumab: 3 mg/kg; intravenously; Days 15 and 36.
General disorders
Fatigue
40.0%
2/5 • Number of events 3 • Up to 2 years
50.0%
2/4 • Number of events 2 • Up to 2 years
33.3%
2/6 • Number of events 2 • Up to 2 years
General disorders
Injection site reaction
60.0%
3/5 • Number of events 6 • Up to 2 years
0.00%
0/4 • Up to 2 years
50.0%
3/6 • Number of events 5 • Up to 2 years
General disorders
Fever
60.0%
3/5 • Number of events 3 • Up to 2 years
25.0%
1/4 • Number of events 1 • Up to 2 years
0.00%
0/6 • Up to 2 years
General disorders
Chills
20.0%
1/5 • Number of events 1 • Up to 2 years
0.00%
0/4 • Up to 2 years
0.00%
0/6 • Up to 2 years
General disorders
Edema limbs
20.0%
1/5 • Number of events 1 • Up to 2 years
0.00%
0/4 • Up to 2 years
0.00%
0/6 • Up to 2 years
General disorders
Flu like symptoms
20.0%
1/5 • Number of events 1 • Up to 2 years
0.00%
0/4 • Up to 2 years
0.00%
0/6 • Up to 2 years
General disorders
General disorders and administration site conditions - Other
20.0%
1/5 • Number of events 1 • Up to 2 years
0.00%
0/4 • Up to 2 years
0.00%
0/6 • Up to 2 years
General disorders
Pain
20.0%
1/5 • Number of events 1 • Up to 2 years
0.00%
0/4 • Up to 2 years
0.00%
0/6 • Up to 2 years
Renal and urinary disorders
Urinary incontinence
40.0%
2/5 • Number of events 2 • Up to 2 years
25.0%
1/4 • Number of events 1 • Up to 2 years
33.3%
2/6 • Number of events 2 • Up to 2 years
Renal and urinary disorders
Urinary frequency
0.00%
0/5 • Up to 2 years
0.00%
0/4 • Up to 2 years
33.3%
2/6 • Number of events 2 • Up to 2 years
Renal and urinary disorders
Urinary urgency
0.00%
0/5 • Up to 2 years
25.0%
1/4 • Number of events 1 • Up to 2 years
0.00%
0/6 • Up to 2 years
Renal and urinary disorders
Acute kidney injury
20.0%
1/5 • Number of events 1 • Up to 2 years
0.00%
0/4 • Up to 2 years
0.00%
0/6 • Up to 2 years
Skin and subcutaneous tissue disorders
Rash maculo-papular
0.00%
0/5 • Up to 2 years
0.00%
0/4 • Up to 2 years
16.7%
1/6 • Number of events 2 • Up to 2 years
Skin and subcutaneous tissue disorders
Pruritus
0.00%
0/5 • Up to 2 years
25.0%
1/4 • Number of events 2 • Up to 2 years
16.7%
1/6 • Number of events 1 • Up to 2 years
Skin and subcutaneous tissue disorders
Skin and subcutaneous tissue disorders - Other
0.00%
0/5 • Up to 2 years
25.0%
1/4 • Number of events 1 • Up to 2 years
33.3%
2/6 • Number of events 2 • Up to 2 years
Investigations
Lipase increased
40.0%
2/5 • Number of events 3 • Up to 2 years
0.00%
0/4 • Up to 2 years
0.00%
0/6 • Up to 2 years
Investigations
Serum amylase increased
40.0%
2/5 • Number of events 2 • Up to 2 years
0.00%
0/4 • Up to 2 years
0.00%
0/6 • Up to 2 years
Investigations
Blood bilirubin increased
0.00%
0/5 • Up to 2 years
0.00%
0/4 • Up to 2 years
16.7%
1/6 • Number of events 1 • Up to 2 years
Investigations
Weight gain
0.00%
0/5 • Up to 2 years
0.00%
0/4 • Up to 2 years
16.7%
1/6 • Number of events 1 • Up to 2 years
Reproductive system and breast disorders
Erectile dysfunction
20.0%
1/5 • Number of events 1 • Up to 2 years
0.00%
0/4 • Up to 2 years
33.3%
2/6 • Number of events 2 • Up to 2 years
Gastrointestinal disorders
Abdominal distension
0.00%
0/5 • Up to 2 years
25.0%
1/4 • Number of events 1 • Up to 2 years
0.00%
0/6 • Up to 2 years
Gastrointestinal disorders
Diarrhea
0.00%
0/5 • Up to 2 years
25.0%
1/4 • Number of events 1 • Up to 2 years
0.00%
0/6 • Up to 2 years
Gastrointestinal disorders
Ileus
0.00%
0/5 • Up to 2 years
25.0%
1/4 • Number of events 1 • Up to 2 years
0.00%
0/6 • Up to 2 years
Gastrointestinal disorders
Nausea
20.0%
1/5 • Number of events 1 • Up to 2 years
0.00%
0/4 • Up to 2 years
0.00%
0/6 • Up to 2 years
Gastrointestinal disorders
Pancreatitis
20.0%
1/5 • Number of events 1 • Up to 2 years
0.00%
0/4 • Up to 2 years
0.00%
0/6 • Up to 2 years
Gastrointestinal disorders
Vomiting
20.0%
1/5 • Number of events 1 • Up to 2 years
0.00%
0/4 • Up to 2 years
0.00%
0/6 • Up to 2 years
Infections and infestations
Urinary tract infection
40.0%
2/5 • Number of events 2 • Up to 2 years
0.00%
0/4 • Up to 2 years
0.00%
0/6 • Up to 2 years
Musculoskeletal and connective tissue disorders
Back pain
0.00%
0/5 • Up to 2 years
25.0%
1/4 • Number of events 1 • Up to 2 years
0.00%
0/6 • Up to 2 years
Musculoskeletal and connective tissue disorders
Pain in extremity
20.0%
1/5 • Number of events 1 • Up to 2 years
0.00%
0/4 • Up to 2 years
0.00%
0/6 • Up to 2 years
Nervous system disorders
Dizziness
0.00%
0/5 • Up to 2 years
0.00%
0/4 • Up to 2 years
16.7%
1/6 • Number of events 1 • Up to 2 years
Nervous system disorders
Headache
0.00%
0/5 • Up to 2 years
0.00%
0/4 • Up to 2 years
16.7%
1/6 • Number of events 3 • Up to 2 years
Vascular disorders
Hot flashes
20.0%
1/5 • Number of events 1 • Up to 2 years
0.00%
0/4 • Up to 2 years
16.7%
1/6 • Number of events 1 • Up to 2 years
Blood and lymphatic system disorders
Anemia
0.00%
0/5 • Up to 2 years
0.00%
0/4 • Up to 2 years
16.7%
1/6 • Number of events 1 • Up to 2 years
Endocrine disorders
Adrenal insufficiency
0.00%
0/5 • Up to 2 years
0.00%
0/4 • Up to 2 years
16.7%
1/6 • Number of events 1 • Up to 2 years
Endocrine disorders
Hypothyroidism
0.00%
0/5 • Up to 2 years
0.00%
0/4 • Up to 2 years
16.7%
1/6 • Number of events 1 • Up to 2 years
Metabolism and nutrition disorders
Hypocalcemia
20.0%
1/5 • Number of events 1 • Up to 2 years
0.00%
0/4 • Up to 2 years
0.00%
0/6 • Up to 2 years
Metabolism and nutrition disorders
Hyponatremia
20.0%
1/5 • Number of events 1 • Up to 2 years
0.00%
0/4 • Up to 2 years
0.00%
0/6 • Up to 2 years

Additional Information

Dr. Lawrence Fong, MD

University of California, San Francisco

Phone: (415) 514-3160

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place