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Table 1 Patient characteristics

From: Clinical impact of volume of disease and time of metastatic disease presentation on patients receiving enzalutamide or abiraterone acetate plus prednisone as first-line therapy for metastatic castration-resistant prostate cancer

Variable

Overall series

n = 417

No. (%)

LV/PLT

n = 157

No. (%)

LV/DN

n = 87

No. (%)

HV/PLT

n = 64

No. (%)

HV/DN

n = 109

No. (%)

p-value*

Median age at start of ARSi, yrs (IQR)

75 (12)

75 (10)

75 (10)

78 (16)

75 (17)

0.14

Race (NA:4)

      

 Caucasian

373 (90.3)

147 (94.2)

78 (90.7)

59 (92.2)

89 (83.2)

0.24

 Black

25 (6.1)

7 (4.5)

4 (4.7)

3 (4.7)

11 (10.3)

 

 Hispanic

12 (2.9)

2 (1.3)

3 (3.5)

2 (3.1)

5 (4.7)

 

 Asian

3 (0.7)

0 (0)

1 (1.1)

0 (0)

2 (1.8)

 

Gleason score (NA: 53)

      

 ≤ 7

140 (38.5)

77 (54.2)

24 (29.6)

23 (40.4)

16 (19.0)

 

 8+ 

224 (61.5)

65 (45.8)

57 (70.4)

34 (59.6)

68 (81.0)

0.0001

Prior local therapy

      

 No

177 (42.4)

0 (0)

78 (89.7)

0 (0)

99 (90.8)

 

 Surgery

167 (40.0)

122 (77.7)

7 (8.0)

34 (53.1)

4 (3.7)

 

 Radiotherapy

73 (17.6)

35 (22.3)

2 (2.3)

30 (46.9)

6 (5.5)

0.0001

Volume at M1 (NA:2)

      

 Low

291 (70.1)

151 (96.2)

79 (90.8)

29 (45.3)

32 (29.9)

 

 High

124 (29.9)

6 (3.8)

8 (9.2)

35 (54.7)

75 (70.1)

0.0001

Treatment for mCSPC (NA:47)

      

 ADT alone

308 (83.2)

120 (97.6)

66 (77.6)

48 (90.6)

74 (67.9)

 

 ADT + Docetaxel

44 (11.9)

3 (2.4)

6 (7.1)

5 (9.4)

30 (27.5)

 

 ADT + Radiotherapy

18 (4.9)

0 (0)

13 (15.3)

0 (0)

5 (4.6)

0.0001

ECOG PS at start of ARSi (NA:20)

      

 0

225 (56.7)

104 (68.0)

56 (66.7)

23 (39.0)

42 (41.6)

0.0001

 ≥ 1

172 (43.3)

49 (32.0)

28 (33.3)

36 (61.0)

59 (58.4)

 

Median PSA at start of ARSi (NA:20)

      

 ng/mL (IQR)

11.65

(30.52)

7.50

(20.34)

11.90

(28.82)

17.73

(33.78)

21.21

(84.26)

0.001

Treatment discontinuation (NA:2)

      

 Yes

48 (11.6)

20 (12.8)

11 (12.6)

8 (12.7)

9 (8.3)

0.66

 No

367 (88.4)

136 (87.2)

76 (87.4)

55 (87.3)

100 (91.7)

 

Number of cycles of 1st line ARSi (NA:47)

      

 Median (IQR)

13.7 (23.0)

19 (27.6)

19 (23.0)

9 (15.4)

11 (16.0)

0.0001

 Median FU in overall population, months (95%CI)

32.5

(30.6–34.2)

38.3

35.1

(31.6–38.6)

24.8

(20.5–28.5)

26.3

(23.2–30.4)

0.0001

  1. AA abiraterone acetate plus prednisone, ADT androgen deprivation therapy, CI confidence interval, D docetaxel, ECOG PS Eastern Cooperative Oncology Group performance status, LV low volume, HV high volume, yrs years, IQR interquartile range, mCSPC metastatic castration-sensitive prostate cancer, PLT primary local therapy, DN de-novo, NA not available
  2. *p-value from Kruskal–Wallis test or chi-square test, as appropriate