Patient characteristics at baseline
| Variable | IL-7 (N=28) | Obs (N=26) | Total (N=54) |
| Age | |||
| N | 28 | 26 | 54 |
| Median | 68 | 66.5 | 67 |
| Min–max | 51–81 | 46–81 | 46–81 |
| Race | |||
| White | 25 (89.3%) | 21 (80.8%) | 46 (85.2%) |
| Black or African-American | 2 (7.1%) | 4 (15.4%) | 6 (11.1%) |
| Not reported | 1 (3.6%) | 1 (3.8%) | 2 (3.7%) |
| Baseline hemoglobin | |||
| Median | 12.9 | 12.2 | 12.7 |
| Min–max | 10.9–14.4 | 10.3–14.7 | |
| Baseline alkaline phosphatase | |||
| Median (U/L) | 70.5 | 70.0 | 70.0 |
| Min–max | 39–151 | 29–1113 | |
| Baseline PSA* | |||
| Mean | 29.0 | 35.6 | 31.9 |
| Median | 5.8 | 15.4 | 10.6 |
| Min–Max | 0.11–156.4 | 0.47–202.7 | |
| ECOG | |||
| 0 | 24 (85.7%) | 19 (73.1%) | 43 (79.6%) |
| 1 | 4 (14.3%) | 7 (26.9%) | 11 (20.4%) |
| Disease distribution† | |||
| Bone only | 12 (46.2%) | 14 (60.9%) | 26 (53.1%) |
| Lymph node only | 6 (23.1%) | 4 (17.4%) | 10 (20.4%) |
| Mixed | 5 (19.2%) | 3 (13.0%) | 8 (16.3%) |
*For baseline PSA data, IL-7 had n=26, Obs had n=21.
†For disease distribution by imaging, IL-7 had n=26, Obs had n=23.
ECOG, Eastern Cooperative Oncology Group; IL-7, interleukin-7; Obs, observation; PSA, Prostate specific antigen.