Trial Outcomes & Findings for 68 Ga-PSMA for High Risk Prostate Cancer (NCT NCT04614363)

NCT ID: NCT04614363

Last Updated: 2023-08-28

Results Overview

Number of patients with cTxNoMo (clinically localized disease) found on final histological examination to have lymph node involvement as determined by 68GA-PSMA-11 PET/CT.

Recruitment status

COMPLETED

Study phase

PHASE1/PHASE2

Target enrollment

80 participants

Primary outcome timeframe

18 months

Results posted on

2023-08-28

Participant Flow

Participant milestones

Participant milestones
Measure
Localized High Risk Prostate Cancer
Patients with high risk prostate cancer scheduled for prostatectomy will receive a single IV dose of 3-7 mCi of 68Ga-PSMA (study drug) followed by PET/CT imaging 60-90 minutes after injection.
Biochemical Recurrence
Patients with biochemical recurrence post radical prostatectomy will receive a single IV dose of 3-7 mCi of 68Ga-PSMA (study drug) followed by PET/CT imaging 60-90 minutes after injection.
Overall Study
STARTED
30
50
Overall Study
COMPLETED
27
49
Overall Study
NOT COMPLETED
3
1

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

68 Ga-PSMA for High Risk Prostate Cancer

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Localized High Risk Prostate Cancer
n=30 Participants
Patients with high risk prostate cancer scheduled for prostatectomy will receive a single IV dose of 3-7 mCi of 68Ga-PSMA (study drug) followed by PET/CT imaging 60-90 minutes after injection.
Biochemical Recurrence
n=50 Participants
Patients with biochemical recurrence post radical prostatectomy will receive a single IV dose of 3-7 mCi of 68Ga-PSMA (study drug) followed by PET/CT imaging 60-90 minutes after injection.
Total
n=80 Participants
Total of all reporting groups
Age, Categorical
<=18 years
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
Age, Categorical
Between 18 and 65 years
14 Participants
n=99 Participants
19 Participants
n=107 Participants
33 Participants
n=206 Participants
Age, Categorical
>=65 years
16 Participants
n=99 Participants
31 Participants
n=107 Participants
47 Participants
n=206 Participants
Sex: Female, Male
Female
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
Sex: Female, Male
Male
30 Participants
n=99 Participants
50 Participants
n=107 Participants
80 Participants
n=206 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
3 Participants
n=99 Participants
5 Participants
n=107 Participants
8 Participants
n=206 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
27 Participants
n=99 Participants
45 Participants
n=107 Participants
72 Participants
n=206 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
Race (NIH/OMB)
Asian
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
Race (NIH/OMB)
Black or African American
8 Participants
n=99 Participants
2 Participants
n=107 Participants
10 Participants
n=206 Participants
Race (NIH/OMB)
White
22 Participants
n=99 Participants
48 Participants
n=107 Participants
70 Participants
n=206 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
Region of Enrollment
United States
30 participants
n=99 Participants
50 participants
n=107 Participants
80 participants
n=206 Participants

PRIMARY outcome

Timeframe: 18 months

Number of patients with cTxNoMo (clinically localized disease) found on final histological examination to have lymph node involvement as determined by 68GA-PSMA-11 PET/CT.

Outcome measures

Outcome measures
Measure
Localized High Risk Prostate Cancer
n=30 Participants
Patients with high risk prostate cancer scheduled for prostatectomy will receive a single IV dose of 3-7 mCi of 68Ga-PSMA (study drug) followed by PET/CT imaging 60-90 minutes after injection.
Biochemical Recurrence
n=50 Participants
Patients with biochemical recurrence post radical prostatectomy will receive a single IV dose of 3-7 mCi of 68Ga-PSMA (study drug) followed by PET/CT imaging 60-90 minutes after injection.
Proportion of Patients With Lymph Node Involvement
4 Participants
28 Participants

PRIMARY outcome

Timeframe: 18 months

Number of patients in which 68GA-PSMA-11 PET/CT altered the planned clinical management.

Outcome measures

Outcome measures
Measure
Localized High Risk Prostate Cancer
n=30 Participants
Patients with high risk prostate cancer scheduled for prostatectomy will receive a single IV dose of 3-7 mCi of 68Ga-PSMA (study drug) followed by PET/CT imaging 60-90 minutes after injection.
Biochemical Recurrence
n=50 Participants
Patients with biochemical recurrence post radical prostatectomy will receive a single IV dose of 3-7 mCi of 68Ga-PSMA (study drug) followed by PET/CT imaging 60-90 minutes after injection.
Proportion of Patients Which Clinical Management Was Altered
2 Participants
30 Participants

SECONDARY outcome

Timeframe: 18 months

Uptake intensity detected on PET/CT in the prostate and outside of the prostate

Outcome measures

Outcome measures
Measure
Localized High Risk Prostate Cancer
n=30 Participants
Patients with high risk prostate cancer scheduled for prostatectomy will receive a single IV dose of 3-7 mCi of 68Ga-PSMA (study drug) followed by PET/CT imaging 60-90 minutes after injection.
Biochemical Recurrence
n=50 Participants
Patients with biochemical recurrence post radical prostatectomy will receive a single IV dose of 3-7 mCi of 68Ga-PSMA (study drug) followed by PET/CT imaging 60-90 minutes after injection.
Intensity of Uptake as a Predictor of Clinical Outcome or Aggressiveness
SUV (mean) inside the prostate : mean SUV
22.45 SUV
Interval 3.9 to 105.7
0 SUV
Interval 0.0 to 0.0
Intensity of Uptake as a Predictor of Clinical Outcome or Aggressiveness
SUV (mean) outside the prostate
43.8 SUV
Interval 12.8 to 74.9
16.9 SUV
Interval 2.1 to 99.7

SECONDARY outcome

Timeframe: 18 months

Number of patients in which 68Ga-PSMA 11 PET/CT showed suspicious lesions that are were not seen in standard diagnostic modalities of bone scan, CTs or MRI.

Outcome measures

Outcome measures
Measure
Localized High Risk Prostate Cancer
n=30 Participants
Patients with high risk prostate cancer scheduled for prostatectomy will receive a single IV dose of 3-7 mCi of 68Ga-PSMA (study drug) followed by PET/CT imaging 60-90 minutes after injection.
Biochemical Recurrence
n=50 Participants
Patients with biochemical recurrence post radical prostatectomy will receive a single IV dose of 3-7 mCi of 68Ga-PSMA (study drug) followed by PET/CT imaging 60-90 minutes after injection.
Number of Patients With Suspicious Lesions
4 Participants
17 Participants

Adverse Events

Localized High Risk Prostate Cancer

Serious events: 1 serious events
Other events: 0 other events
Deaths: 0 deaths

Biochemical Recurrence

Serious events: 2 serious events
Other events: 0 other events
Deaths: 2 deaths

Serious adverse events

Serious adverse events
Measure
Localized High Risk Prostate Cancer
n=30 participants at risk
One patient was hospitalized due to acute CVA, grade 2, not related.
Biochemical Recurrence
n=50 participants at risk
Two patients in this group died. These events were not related to the study. Acute encephalopathy and metastatic prostate cancer to liver, bone and brain.
Nervous system disorders
Encephalopathy
0.00%
0/30 • Participants were followed at 2 and 6 months post PET scan.
2.0%
1/50 • Number of events 1 • Participants were followed at 2 and 6 months post PET scan.
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Prostate cancer metastasis
0.00%
0/30 • Participants were followed at 2 and 6 months post PET scan.
2.0%
1/50 • Number of events 1 • Participants were followed at 2 and 6 months post PET scan.
Nervous system disorders
Acute cerebrovascular accident
3.3%
1/30 • Number of events 1 • Participants were followed at 2 and 6 months post PET scan.
0.00%
0/50 • Participants were followed at 2 and 6 months post PET scan.

Other adverse events

Adverse event data not reported

Additional Information

Dr. Brian Miles

Houston Methodist

Phone: 713-441-8113

Results disclosure agreements

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