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PSA kinetics for SBRT monotherapy and SBRT boost and WPRT.
| SBRT monotherapy | SBRT boost + WPRT | |
|---|---|---|
| Median PSA nadir (ng/mL) | 0.31 (0.04–1.15) | 0.34 (0.04–1.44) |
| PSA nadir ≤ 0.5 ng/mL (%) | 75.0 | 75.9 |
| Median time to nadir (mo) | 32.8 (9–52) | 33 (12–51) |
| PSA bounce (%) | 37.50 | 27.60 |
| Median PSA bounce (ng/mL) | 0.34 (0.21–1.39) | 0.26 (0.21–0.58) |
| Median time to PSA bounce (mo) | 13.5 (6–18) | 11.5 (6–25) |
PSA, prostate–specific antigen; SBRT, stereotactic body radiotherapy; WPRT, whole pelvis radiotherapy.
