Trial Outcomes & Findings for pTVG-HP and Nivolumab in Patients With Non-Metastatic PSA-Recurrent Prostate Cancer (NCT NCT03600350)

NCT ID: NCT03600350

Last Updated: 2025-05-09

Results Overview

Subjects will be evaluated at each visit by a review of systems based on the most recent version of the NCI common toxicity criteria. Safety and Tolerability of this intervention is defined as following: a toxicity rate p0 of at most 15% of Grade ≥ 3 toxicity events (CTCAE v.4.0) will be considered as acceptable while a toxicity rate p1=35% or more will be considered as unacceptably high. See Adverse Events Section for full summary of data.

Recruitment status

ACTIVE_NOT_RECRUITING

Study phase

PHASE2

Target enrollment

19 participants

Primary outcome timeframe

up to 48 weeks

Results posted on

2025-05-09

Participant Flow

Participants were recruited from September 2018 to December 2021.

Participant milestones

Participant milestones
Measure
Treatment Group
* Nivolumab 240 mg IV every two weeks x 6 beginning day 1, then every four weeks x 9 beginning week 12 * pTVG-HP (100 µg) administered intradermally (i.d.) every two weeks x 6 beginning day 1, then every four weeks x 9 beginning week 12 * rhGM-CSF (208 µg) administered intradermally (i.d.) every two weeks x 4 beginning week 4, then every four weeks x 9 beginning week 12 NOTE: Only administered to patients for whom serum PSA obtained week 4 \> serum PSA obtained at day 1. pTVG-HP: Plasmid DNA vaccine encoding Prostatic Acid Phosphatase (PAP) Nivolumab: Nivolumab is a human programmed death receptor-1 (PD-1)-blocking antibody indicated for the treatment of patients with multiple different types of cancer. GM-CSF: Granulocyte-macrophage colony-stimulating factor (GM-CSF) is a growth factor that supports the survival, clonal expansion and differentiation of hematopoietic progenitor cells including dendritic antigen presenting cells.
Overall Study
STARTED
19
Overall Study
On Treatment
19
Overall Study
Off Treatment
19
Overall Study
COMPLETED
0
Overall Study
NOT COMPLETED
19

Reasons for withdrawal

Reasons for withdrawal
Measure
Treatment Group
* Nivolumab 240 mg IV every two weeks x 6 beginning day 1, then every four weeks x 9 beginning week 12 * pTVG-HP (100 µg) administered intradermally (i.d.) every two weeks x 6 beginning day 1, then every four weeks x 9 beginning week 12 * rhGM-CSF (208 µg) administered intradermally (i.d.) every two weeks x 4 beginning week 4, then every four weeks x 9 beginning week 12 NOTE: Only administered to patients for whom serum PSA obtained week 4 \> serum PSA obtained at day 1. pTVG-HP: Plasmid DNA vaccine encoding Prostatic Acid Phosphatase (PAP) Nivolumab: Nivolumab is a human programmed death receptor-1 (PD-1)-blocking antibody indicated for the treatment of patients with multiple different types of cancer. GM-CSF: Granulocyte-macrophage colony-stimulating factor (GM-CSF) is a growth factor that supports the survival, clonal expansion and differentiation of hematopoietic progenitor cells including dendritic antigen presenting cells.
Overall Study
Death
1
Overall Study
On Follow Up
18

Baseline Characteristics

pTVG-HP and Nivolumab in Patients With Non-Metastatic PSA-Recurrent Prostate Cancer

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Treatment Group
n=19 Participants
* Nivolumab 240 mg IV every two weeks x 6 beginning day 1, then every four weeks x 9 beginning week 12 * pTVG-HP (100 µg) administered intradermally (i.d.) every two weeks x 6 beginning day 1, then every four weeks x 9 beginning week 12 * rhGM-CSF (208 µg) administered intradermally (i.d.) every two weeks x 4 beginning week 4, then every four weeks x 9 beginning week 12 NOTE: Only administered to patients for whom serum PSA obtained week 4 \> serum PSA obtained at day 1. pTVG-HP: Plasmid DNA vaccine encoding Prostatic Acid Phosphatase (PAP) Nivolumab: Nivolumab is a human programmed death receptor-1 (PD-1)-blocking antibody indicated for the treatment of patients with multiple different types of cancer. GM-CSF: Granulocyte-macrophage colony-stimulating factor (GM-CSF) is a growth factor that supports the survival, clonal expansion and differentiation of hematopoietic progenitor cells including dendritic antigen presenting cells.
Age, Customized
60-69 years
10 Participants
n=5 Participants
Age, Customized
70-79 years
9 Participants
n=5 Participants
Sex: Female, Male
Female
0 Participants
n=5 Participants
Sex: Female, Male
Male
19 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
19 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
Race (NIH/OMB)
American Indian or Alaska Native
1 Participants
n=5 Participants
Race (NIH/OMB)
Asian
0 Participants
n=5 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=5 Participants
Race (NIH/OMB)
Black or African American
0 Participants
n=5 Participants
Race (NIH/OMB)
White
18 Participants
n=5 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=5 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
Region of Enrollment
United States
19 participants
n=5 Participants

PRIMARY outcome

Timeframe: up to 48 weeks

Subjects will be evaluated at each visit by a review of systems based on the most recent version of the NCI common toxicity criteria. Safety and Tolerability of this intervention is defined as following: a toxicity rate p0 of at most 15% of Grade ≥ 3 toxicity events (CTCAE v.4.0) will be considered as acceptable while a toxicity rate p1=35% or more will be considered as unacceptably high. See Adverse Events Section for full summary of data.

Outcome measures

Outcome measures
Measure
Treatment Group
n=19 Participants
* Nivolumab 240 mg IV every two weeks x 6 beginning day 1, then every four weeks x 9 beginning week 12 * pTVG-HP (100 µg) administered intradermally (i.d.) every two weeks x 6 beginning day 1, then every four weeks x 9 beginning week 12 * rhGM-CSF (208 µg) administered intradermally (i.d.) every two weeks x 4 beginning week 4, then every four weeks x 9 beginning week 12 NOTE: Only administered to patients for whom serum PSA obtained week 4 \> serum PSA obtained at day 1. pTVG-HP: Plasmid DNA vaccine encoding Prostatic Acid Phosphatase (PAP) Nivolumab: Nivolumab is a human programmed death receptor-1 (PD-1)-blocking antibody indicated for the treatment of patients with multiple different types of cancer. GM-CSF: Granulocyte-macrophage colony-stimulating factor (GM-CSF) is a growth factor that supports the survival, clonal expansion and differentiation of hematopoietic progenitor cells including dendritic antigen presenting cells.
Number of Participants Who Experienced Adverse Events Grade 3 or Higher
4 Participants

PRIMARY outcome

Timeframe: up to 48 weeks

A PSA CR will be defined as the percentage of participants with a serum PSA \<0.2 ng/mL and confirmatory PSA \<0.2 ng/mL at least 4 weeks later, as per Prostate Cancer Working Group 2 (PCWG2) recommendations. To qualify as a PSA CR, there must be no evidence of radiographic progression.

Outcome measures

Outcome measures
Measure
Treatment Group
n=19 Participants
* Nivolumab 240 mg IV every two weeks x 6 beginning day 1, then every four weeks x 9 beginning week 12 * pTVG-HP (100 µg) administered intradermally (i.d.) every two weeks x 6 beginning day 1, then every four weeks x 9 beginning week 12 * rhGM-CSF (208 µg) administered intradermally (i.d.) every two weeks x 4 beginning week 4, then every four weeks x 9 beginning week 12 NOTE: Only administered to patients for whom serum PSA obtained week 4 \> serum PSA obtained at day 1. pTVG-HP: Plasmid DNA vaccine encoding Prostatic Acid Phosphatase (PAP) Nivolumab: Nivolumab is a human programmed death receptor-1 (PD-1)-blocking antibody indicated for the treatment of patients with multiple different types of cancer. GM-CSF: Granulocyte-macrophage colony-stimulating factor (GM-CSF) is a growth factor that supports the survival, clonal expansion and differentiation of hematopoietic progenitor cells including dendritic antigen presenting cells.
Prostate-Specific Antigen (PSA) Complete Response (CR) Rate
0 Participants

SECONDARY outcome

Timeframe: Up to 5 years

The 5-year metastasis-free survival will be determined by investigator review of radiographic studies (CT/MRI and bone scintigraphy) performed 5 years after study initiation in subjects who have not already met criteria for radiographic progression.

Outcome measures

Outcome data not reported

SECONDARY outcome

Timeframe: Up to 5 years

All participants will undergo radiographic imaging prior to treatment and at 6-month intervals (or as clinically required). The appearance of lesions consistent with metastatic disease will be used to define radiographic progression.

Outcome measures

Outcome data not reported

SECONDARY outcome

Timeframe: Up to 2 years

Post-treatment doubling time will be calculated from: 1) All PSA values obtained from the same clinical laboratory using the same PSA assay beginning with the PSA value at day 1 (week 0) and continuing until the end-of study (or month 24) value (PSADT 0-24). 2) All PSA values obtained from the same clinical laboratory using the same PSA assay beginning with the PSA value at day 85 (month 3) to the day 253 (month 9) value (PSADT 3-9).

Outcome measures

Outcome data not reported

SECONDARY outcome

Timeframe: Up to 2 years

The percentage of participants with PSA values less than or equal to their baseline value after 2 year.

Outcome measures

Outcome data not reported

SECONDARY outcome

Timeframe: up to week 4

GM-CSF is used as an adjuvant if the PSA at week 4 is higher than baseline.

Outcome measures

Outcome measures
Measure
Treatment Group
n=19 Participants
* Nivolumab 240 mg IV every two weeks x 6 beginning day 1, then every four weeks x 9 beginning week 12 * pTVG-HP (100 µg) administered intradermally (i.d.) every two weeks x 6 beginning day 1, then every four weeks x 9 beginning week 12 * rhGM-CSF (208 µg) administered intradermally (i.d.) every two weeks x 4 beginning week 4, then every four weeks x 9 beginning week 12 NOTE: Only administered to patients for whom serum PSA obtained week 4 \> serum PSA obtained at day 1. pTVG-HP: Plasmid DNA vaccine encoding Prostatic Acid Phosphatase (PAP) Nivolumab: Nivolumab is a human programmed death receptor-1 (PD-1)-blocking antibody indicated for the treatment of patients with multiple different types of cancer. GM-CSF: Granulocyte-macrophage colony-stimulating factor (GM-CSF) is a growth factor that supports the survival, clonal expansion and differentiation of hematopoietic progenitor cells including dendritic antigen presenting cells.
Number of Participants Receiving GM-CSF as an Adjuvant After Week 4
14 Participants

Adverse Events

Treatment Group

Serious events: 5 serious events
Other events: 19 other events
Deaths: 1 deaths

Serious adverse events

Serious adverse events
Measure
Treatment Group
n=19 participants at risk
* Nivolumab 240 mg IV every two weeks x 6 beginning day 1, then every four weeks x 9 beginning week 12 * pTVG-HP (100 µg) administered intradermally (i.d.) every two weeks x 6 beginning day 1, then every four weeks x 9 beginning week 12 * rhGM-CSF (208 µg) administered intradermally (i.d.) every two weeks x 4 beginning week 4, then every four weeks x 9 beginning week 12 NOTE: Only administered to patients for whom serum PSA obtained week 4 \> serum PSA obtained at day 1. pTVG-HP: Plasmid DNA vaccine encoding Prostatic Acid Phosphatase (PAP) Nivolumab: Nivolumab is a human programmed death receptor-1 (PD-1)-blocking antibody indicated for the treatment of patients with multiple different types of cancer. GM-CSF: Granulocyte-macrophage colony-stimulating factor (GM-CSF) is a growth factor that supports the survival, clonal expansion and differentiation of hematopoietic progenitor cells including dendritic antigen presenting cells.
Gastrointestinal disorders
Abdominal pain
5.3%
1/19 • Number of events 1 • up to 2 years
General disorders
Infusion related reaction
5.3%
1/19 • Number of events 1 • up to 2 years
General disorders
Non-cardiac chest pain
5.3%
1/19 • Number of events 1 • up to 2 years
Infections and infestations
Skin infection
5.3%
1/19 • Number of events 1 • up to 2 years
Surgical and medical procedures
Surgical and medical procedures - Other, specify
5.3%
1/19 • Number of events 1 • up to 2 years

Other adverse events

Other adverse events
Measure
Treatment Group
n=19 participants at risk
* Nivolumab 240 mg IV every two weeks x 6 beginning day 1, then every four weeks x 9 beginning week 12 * pTVG-HP (100 µg) administered intradermally (i.d.) every two weeks x 6 beginning day 1, then every four weeks x 9 beginning week 12 * rhGM-CSF (208 µg) administered intradermally (i.d.) every two weeks x 4 beginning week 4, then every four weeks x 9 beginning week 12 NOTE: Only administered to patients for whom serum PSA obtained week 4 \> serum PSA obtained at day 1. pTVG-HP: Plasmid DNA vaccine encoding Prostatic Acid Phosphatase (PAP) Nivolumab: Nivolumab is a human programmed death receptor-1 (PD-1)-blocking antibody indicated for the treatment of patients with multiple different types of cancer. GM-CSF: Granulocyte-macrophage colony-stimulating factor (GM-CSF) is a growth factor that supports the survival, clonal expansion and differentiation of hematopoietic progenitor cells including dendritic antigen presenting cells.
General disorders
Fatigue
57.9%
11/19 • Number of events 15 • up to 2 years
General disorders
Chills
31.6%
6/19 • Number of events 10 • up to 2 years
General disorders
Injection site reaction
21.1%
4/19 • Number of events 8 • up to 2 years
General disorders
Non-cardiac chest pain
15.8%
3/19 • Number of events 3 • up to 2 years
General disorders
Fever
10.5%
2/19 • Number of events 5 • up to 2 years
General disorders
Pain
10.5%
2/19 • Number of events 2 • up to 2 years
General disorders
Flu like symptoms
5.3%
1/19 • Number of events 1 • up to 2 years
General disorders
Gait disturbance
5.3%
1/19 • Number of events 1 • up to 2 years
General disorders
Infusion related reaction
5.3%
1/19 • Number of events 1 • up to 2 years
Gastrointestinal disorders
Diarrhea
31.6%
6/19 • Number of events 10 • up to 2 years
Gastrointestinal disorders
Abdominal pain
21.1%
4/19 • Number of events 8 • up to 2 years
Gastrointestinal disorders
Bloating
21.1%
4/19 • Number of events 5 • up to 2 years
Gastrointestinal disorders
Constipation
21.1%
4/19 • Number of events 4 • up to 2 years
Gastrointestinal disorders
Dry mouth
10.5%
2/19 • Number of events 2 • up to 2 years
Gastrointestinal disorders
Gastrointestinal disorders - Other, specify
10.5%
2/19 • Number of events 2 • up to 2 years
Gastrointestinal disorders
Gastroesophageal reflux disease
5.3%
1/19 • Number of events 1 • up to 2 years
Gastrointestinal disorders
Gastrointestinal pain
5.3%
1/19 • Number of events 1 • up to 2 years
Gastrointestinal disorders
Lower gastrointestinal hemorrhage
5.3%
1/19 • Number of events 1 • up to 2 years
Gastrointestinal disorders
Nausea
5.3%
1/19 • Number of events 1 • up to 2 years
Gastrointestinal disorders
Pancreatitis
5.3%
1/19 • Number of events 1 • up to 2 years
Gastrointestinal disorders
Toothache
5.3%
1/19 • Number of events 1 • up to 2 years
Gastrointestinal disorders
Vomiting
5.3%
1/19 • Number of events 1 • up to 2 years
Investigations
Serum amylase increased
21.1%
4/19 • Number of events 5 • up to 2 years
Investigations
Creatinine increased
15.8%
3/19 • Number of events 3 • up to 2 years
Investigations
Lipase increased
10.5%
2/19 • Number of events 8 • up to 2 years
Investigations
Lymphocyte count decreased
10.5%
2/19 • Number of events 2 • up to 2 years
Investigations
Platelet count decreased
10.5%
2/19 • Number of events 3 • up to 2 years
Investigations
White blood cell decreased
10.5%
2/19 • Number of events 2 • up to 2 years
Investigations
Alanine aminotransferase increased
5.3%
1/19 • Number of events 1 • up to 2 years
Investigations
Aspartate aminotransferase increased
5.3%
1/19 • Number of events 1 • up to 2 years
Investigations
Weight gain
5.3%
1/19 • Number of events 1 • up to 2 years
Investigations
Weight loss
5.3%
1/19 • Number of events 1 • up to 2 years
Metabolism and nutrition disorders
Hyperglycemia
21.1%
4/19 • Number of events 4 • up to 2 years
Metabolism and nutrition disorders
Hypoalbuminemia
21.1%
4/19 • Number of events 5 • up to 2 years
Metabolism and nutrition disorders
Hyponatremia
15.8%
3/19 • Number of events 3 • up to 2 years
Metabolism and nutrition disorders
Anorexia
10.5%
2/19 • Number of events 2 • up to 2 years
Metabolism and nutrition disorders
Hypercalcemia
10.5%
2/19 • Number of events 2 • up to 2 years
Metabolism and nutrition disorders
Hypokalemia
5.3%
1/19 • Number of events 2 • up to 2 years
Metabolism and nutrition disorders
Hypophosphatemia
5.3%
1/19 • Number of events 4 • up to 2 years
Musculoskeletal and connective tissue disorders
Back pain
26.3%
5/19 • Number of events 8 • up to 2 years
Musculoskeletal and connective tissue disorders
Arthralgia
21.1%
4/19 • Number of events 5 • up to 2 years
Musculoskeletal and connective tissue disorders
Pain in extremity
15.8%
3/19 • Number of events 3 • up to 2 years
Musculoskeletal and connective tissue disorders
Arthritis
10.5%
2/19 • Number of events 2 • up to 2 years
Musculoskeletal and connective tissue disorders
Flank pain
10.5%
2/19 • Number of events 2 • up to 2 years
Musculoskeletal and connective tissue disorders
Generalized muscle weakness
10.5%
2/19 • Number of events 3 • up to 2 years
Musculoskeletal and connective tissue disorders
Joint range of motion decreased
5.3%
1/19 • Number of events 1 • up to 2 years
Musculoskeletal and connective tissue disorders
Neck pain
5.3%
1/19 • Number of events 1 • up to 2 years
Nervous system disorders
Dizziness
21.1%
4/19 • Number of events 5 • up to 2 years
Nervous system disorders
Headache
15.8%
3/19 • Number of events 5 • up to 2 years
Nervous system disorders
Tremor
15.8%
3/19 • Number of events 3 • up to 2 years
Nervous system disorders
Dysgeusia
10.5%
2/19 • Number of events 2 • up to 2 years
Respiratory, thoracic and mediastinal disorders
Cough
15.8%
3/19 • Number of events 3 • up to 2 years
Respiratory, thoracic and mediastinal disorders
Dyspnea
10.5%
2/19 • Number of events 2 • up to 2 years
Respiratory, thoracic and mediastinal disorders
Nasal congestion
10.5%
2/19 • Number of events 2 • up to 2 years
Respiratory, thoracic and mediastinal disorders
Productive cough
10.5%
2/19 • Number of events 2 • up to 2 years
Respiratory, thoracic and mediastinal disorders
Sore throat
10.5%
2/19 • Number of events 2 • up to 2 years
Respiratory, thoracic and mediastinal disorders
Laryngeal inflammation
5.3%
1/19 • Number of events 1 • up to 2 years
Respiratory, thoracic and mediastinal disorders
Pleural effusion
5.3%
1/19 • Number of events 1 • up to 2 years
Respiratory, thoracic and mediastinal disorders
Respiratory, thoracic and mediastinal disorders - Other, specify
5.3%
1/19 • Number of events 1 • up to 2 years
Skin and subcutaneous tissue disorders
Pruritus
26.3%
5/19 • Number of events 6 • up to 2 years
Skin and subcutaneous tissue disorders
Rash maculo-papular
21.1%
4/19 • Number of events 9 • up to 2 years
Skin and subcutaneous tissue disorders
Skin and subcutaneous tissue disorders - Other, specify
5.3%
1/19 • Number of events 1 • up to 2 years
Skin and subcutaneous tissue disorders
Urticaria
5.3%
1/19 • Number of events 1 • up to 2 years
Infections and infestations
Infections and infestations - Other, specify
15.8%
3/19 • Number of events 3 • up to 2 years
Infections and infestations
Skin infection
10.5%
2/19 • Number of events 3 • up to 2 years
Infections and infestations
Lung infection
5.3%
1/19 • Number of events 1 • up to 2 years
Infections and infestations
Tooth infection
5.3%
1/19 • Number of events 1 • up to 2 years
Infections and infestations
Upper respiratory infection
5.3%
1/19 • Number of events 1 • up to 2 years
Infections and infestations
Urinary tract infection
5.3%
1/19 • Number of events 1 • up to 2 years
Vascular disorders
Hypertension
26.3%
5/19 • Number of events 9 • up to 2 years
Vascular disorders
Hot flashes
5.3%
1/19 • Number of events 1 • up to 2 years
Vascular disorders
Hypotension
5.3%
1/19 • Number of events 1 • up to 2 years
Vascular disorders
Vascular disorders - Other, specify
5.3%
1/19 • Number of events 1 • up to 2 years
Endocrine disorders
Hypothyroidism
21.1%
4/19 • Number of events 5 • up to 2 years
Endocrine disorders
Hyperthyroidism
15.8%
3/19 • Number of events 3 • up to 2 years
Endocrine disorders
Adrenal insufficiency
5.3%
1/19 • Number of events 1 • up to 2 years
Endocrine disorders
Hyperparathyroidism
5.3%
1/19 • Number of events 1 • up to 2 years
Blood and lymphatic system disorders
Anemia
26.3%
5/19 • Number of events 7 • up to 2 years
Cardiac disorders
Atrial fibrillation
5.3%
1/19 • Number of events 2 • up to 2 years
Cardiac disorders
Chest pain - cardiac
5.3%
1/19 • Number of events 1 • up to 2 years
Cardiac disorders
Palpitations
5.3%
1/19 • Number of events 1 • up to 2 years
Injury, poisoning and procedural complications
Fall
10.5%
2/19 • Number of events 2 • up to 2 years
Injury, poisoning and procedural complications
Burn
5.3%
1/19 • Number of events 1 • up to 2 years
Eye disorders
Blurred vision
5.3%
1/19 • Number of events 1 • up to 2 years
Eye disorders
Watering eyes
5.3%
1/19 • Number of events 1 • up to 2 years
Psychiatric disorders
Insomnia
10.5%
2/19 • Number of events 2 • up to 2 years
Renal and urinary disorders
Hematuria
5.3%
1/19 • Number of events 1 • up to 2 years
Renal and urinary disorders
Urinary frequency
5.3%
1/19 • Number of events 1 • up to 2 years
Renal and urinary disorders
Urinary tract pain
5.3%
1/19 • Number of events 1 • up to 2 years
Surgical and medical procedures
Surgical and medical procedures - Other, specify
5.3%
1/19 • Number of events 1 • up to 2 years

Additional Information

Douglas McNeel, MD, PhD

University of Wisconsin Carbone Cancer Center

Phone: (608) 263-4198

Results disclosure agreements

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