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. 2021 Jun 9;27(17):4746–4756. doi: 10.1158/1078-0432.CCR-21-0063

Table 1.

Patient demographics.

Cohort 1 Arm A Exp A Arm B Exp B Arm C Exp C All
CDS CDS CDS R-SDS R-SDS A-SDS A-SDS Patients
n (%) (n = 3) (n = 10) (n = 4) (n = 10) (n = 3) (n = 10) (n = 4) (N = 44)
Median age (range), y 70.0 (44–70) 67.5 (41–82) 67.5 (58–82) 74.0 (62–78) 68.0 (68–69) 67.5 (49–85) 71.5 (66–72) 69.0 (41–85)
Age ≥ 65 y 2 (66.7) 7 (70.0) 3 (75.0) 9 (90.0) 3 (100.0) 7 (70.0) 4 (100.0) 35 (79.5)
White race 2 (66.7) 9 (90.0) 1 (25.0) 8 (80.0) 1 (33.3) 7 (70.0) 3 (75.0) 31 (70.5)
Baseline ECOG
 0 2 (66.7) 5 (50.0) 4 (100.0) 6 (60.0) 2 (66.7) 5 (50.0) 2 (50.0) 26 (59.1)
 1 1 (33.3) 5 (50.0) 0 4 (40.0) 1 (33.3) 5 (50.0) 2 (50.0) 18 (40.9)
Baseline PSA, median (range), μg/L 21.7 (19–3,051) 77.7 (4–608) 154.8 (3–2,027) 45.1 (6–186) 55.2 (43–161) 21.2 (7–365) 280.7 (40–1,029) 51.6 (3–3,051)
Baseline ALP, median (range), U/L 75.0 (43–104) 116.0 (42–284) 134.5 (56–448) 98.5 (51–506) 167.0 (130–488) 220.0 (36–1,064) 119.5 (80–313) 125.0 (36–1,064)
Stage at initial diagnosis
 I 0 0 0 0 0 0 1 (25.0) 1 (2.3)
 II 1 (33.3) 1 (10.0) 1 (25.0) 3 (30.0) 0 1 (10.0) 0 7 (15.9)
 III 1 (33.3) 0 0 2 (20.0) 0 4 (40.0) 0 7 (15.9)
 IV 1 (33.3) 5 (50.0) 2 (50.0) 4 (40.0) 0 2 (20.0) 2 (50.0) 16 (36.4)
 Unknown 0 4 (40.0) 1 (25.0) 1 (10.0) 3 (100.0) 3 (30.0) 1 (25.0) 13 (29.5)
Number of bone lesions
 1–3 3 (100.0) 0 1 (25.0) 4 (40.0) 0 0 0 8 (18.2)
 4–6 0 2 (20.0) 0 1 (10.0) 0 1 (10.0) 0 4 (9.1)
 7–9 0 1 (10.0) 0 2 (20.0) 0 3 (30.0) 2 (50.0) 8 (18.2)
 ≥ 10 0 7 (70.0) 3 (75.0) 3 (30.0) 3 (100.0) 6 (60.0) 2 (50.0) 24 (54.5)
Prior surgery, n (%) 1 (33.3) 6 (60.0) 4 (100.0) 8 (80.0) 3 (100.0) 9 (90.0) 3 (75.0) 34 (77.3)
Prior use of taxane, n (%) 1 (33.3) 5 (50.0) 2 (50.0) 1 (10.0) 0 2 (20.0) 3 (75.0) 14 (31.8)
Prior radiotherapy, n (%) 3 (100.0) 8 (80.0) 2 (50.0) 8 (80.0) 3 (100.0) 9 (90.0) 4 (100.0) 37 (84.1)
Max line of therapy, n (%)
 1 3 (100.0) 5 (50.0) 1 (25.0) 2 (20.0) 3 (100.0) 2 (20.0) 1 (25.0) 17 (38.6)
 2 0 2 (20.0) 0 4 (40.0) 0 2 (20.0) 2 (50.0) 10 (22.7)
 3+ 0 3 (30.0) 3 (75.0) 3 (30.0) 0 4 (40.0) 0 13 (29.5)
 Missing 0 0 0 1 (10.0) 0 2 (20.0) 1 (25.0) 4 (9.1)
Metastatic sites, n (%)
 Adrenal 1 (33.3) 1 (10.0) 0 0 0 4 (40.0) 0 6 (13.6)
 Bone 3 (100.0) 10 (100.0) 4 (100.0) 10 (100.0) 3 (100.0) 10 (100.0) 4 (100.0) 44 (100.0)
 Liver 0 0 1 (25.0) 0 0 1 (10.0) 1 (25.0) 3 (6.8)
 Lung 2 (66.7) 5 (50.0) 1 (25.0) 0 0 2 (20.0) 0 10 (22.7)
 Lymph 3 (100.0) 7 (70.0) 3 (75.0) 10 (100.0) 2 (66.7) 7 (70.0) 4 (100.0) 36 (81.8)
 Mediastinum 0 1 (10.0) 1 (25.0) 0 0 0 0 2 (4.5)
 Othera 0 5 (50.0) 1 (25.0) 6 (60.0) 1 (33.3) 3 (30.0) 1 (25.0) 17 (38.6)

Abbreviations: A-SDS, atezolizumab run-in staggered dosing schedule; CDS, concurrent dosing schedule; ECOG, Eastern Cooperative Oncology Group; R-SDS, radium-223 run-in staggered dosing schedule; y, years.

aSoft tissue, retroperitoneal, pleura, soft tissue, peritoneum, bladder, pelvis, chest, prostate, kidney, right ureter, retroperitoneal soft tissue, right periureteral mass, retrocrural node, peritoneum, right perirectal mass, rectum pre-sacral.