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Table 2 Average and percentage of PSA and PSMA PET metrics in the whole cohort

From: Effects of novel androgen receptor signaling inhibitors on PSMA PET signal intensity in patients with castrate-resistant prostate cancer: a prospective exploratory serial imaging study

Clinical and imaging metrics

Visit 1 (n = 9)

Visit 2 (n = 9)

% change visit 1–2

Outcome at 1-year

p*

Visit 3 (n = 5)

% change visit 1–3

Outcome at 1-year

p*

Unfavorable (n = 6)

Favorable (n = 3)

Unfavorable (n = 2)

Favorable (n = 3)

PSA (ng/mL)

Average (SD)

30.79 (37.74)

35.84 (49.40)

 − 12% (0.39)

n/a

n/a

0.82

34.03 (66.66)

 − 42% (0.59)

n/a

n/a

0.88

n + 10%

2 (#6, #9)

45%

1

1

 

1 (#6)

36%

1

 

n stable

1 (#7)

7%

1

 

 

n − 10%

6 (#1, #2, #3, #4, #5, #8)

 − 34%

4

2

 

4 (#1, #3, #5, #7)

 − 68%

2

2

 

PSMA-VOL (mL)

Average (SD)

442.00 (562.69)

523.73 (6676.88)

5% (0.21)

n/a

n/a

0.08

43.78 (56.19)

 − 16% (0.35)

n/a

n/a

0.38

n + 10%

 

3 (#2, #4, #9)

21%

3

 

1 (#7)

13%

1

 

n stable

5 (#3, #5, #6, #7, #8)

5%

3

2

 

3 (#3, #5, #6)

 − 6%

1

2

 

n − 10%

1 (#1)

 − 37%

1

 

1 (#1)

 − 67%

1

 

SUVmean

Average (SD)

8.31 (2.85)

8.34 (2.78)

3% (0.17)

n/a

n/a

0.29

7.75 (3.71)

 − 15% (0.33)

n/a

n/a

0.38

n + 10%

2 (#3, #7)

17%

2

 

1 (#3)

14%

1

 

n stable

6 (#2, #4, #5, #6, #8, #9)

5%

4

2

 

3 (#5, #6, #7)

 − 6%

1

2

 

n − 10%

1 (#1)

37%

1

 

1 (#1)

–62%

1

 

SUVmax

Average (SD)

29.34 (14.91)

33.24 (19.97)

10% (0.06)

n/a

n/a

0.141

25.33 (20.79)

 − 17% (0.17)

n/a

n/a

1

n + 10%

6 (#2, #3, #4, #7, #8, #9)

24%

6

 

1 (#7)

25%

1

 

n stable

2 (#5, #6)

 − 2%

1

1

 

3 (#5, #3, #6)

1%

1

2

 

n − 10%

1 (#1)

 − 47%

1

 

1 (#1)

 − 73%

1

 
  1. Summary of PSA and PSMA PET quantitative parameters changes at 1-week and 3-months post-initiation of ARSI relative to the 1-year outcome. Patient #5 had no measurable disease on PSMA PET at all time points. Therefore, he was included in the calculations of PSA changes, and changes in PET metrics were considered stable. Patient #2 received palliative RT on two bony metastases after visit #2, and the PSMA PET metrics were not used for the analysis for visit #3. PSA-VOL = whole-body tumor volume
  2. *Wilcoxon signed rank test