Several studies have shown that 11C-choline PET/CT may be useful for restaging prostate cancer (PCa) patients with biochemical failure after radical prostatectomy. However, validation of 11C-choline PET/CT findings scarcely relied on histologic findings, and prognostic implications of 11C-choline PET/CT are currently unknown. The aim of this study was to assess whether 11C-choline PET/CT predicts survival in PCa patients. Methods: This retrospective study included 195 PCa patients treated with radical prostatectomy who underwent 11C-choline PET/CT from December 1, 2004, to July 31, 2007, due to biochemical failure (prostate-specific antigen > 0.2 mg/mL) during androgen-deprivation therapy. PCa-specific survival was computed as the interval from radical prostatectomy to PCa-specific death. Results: The median interval after radical prostatectomy was 8.9 y (95% confidence interval [CI], 1.7-18.9 y). The median follow-up after 11C-choline PET/CT was 4.5 y (95% CI, 0.4-8.5 y). 11C-choline PET/CT results were positive in 57% of patients. The median PCa-specific survival was 16.4 y (95% CI, 14.0-18.8 y) in patients with negative 11C-choline PET/CT results and 11.2 y (95% CI, 9.8-12.6 y) in patients with positive 11C-choline PET/CT results (log-rank: x2 = 19.3, P < 0001). At multivariate analysis, statistical significance was obtained for 11C-choline PET/CT (hazard ratio, 2.53; 95% CI, 1.41-4.53; P = 0.002), prostate-specific antigen (hazard ratio, 1.03; 95% CI, 1.00-1.05; P = 0.037), and Gleason score (>7: hazard ratio, 2.49; 95% CI, 1.25-4.95; P = 0.009). Patients with pathologic 11C-choline uptake in the prostatic bed or in pelvic or retroperitoneal lymph nodes had longer PCaspecific survival (median, 12.1 y; 95% CI, 10.5-13.7 y) in comparison to patients with pathologic tracer uptake in the skeleton (median, 9.9 y; 95% CI, 6.8-13.1 y) (log-rank: x2 = 6.5, P < 0.010). Two internally validated nomograms predicted 10- and 15-y PCa-specific survival probability with an accuracy of 76% and 74%, respectively. In an ancillary analysis, we also showed that 11C-choline PET/CT predicts PCa-specific survival after PET/CT, with similar statistical power. Conclusion: 11C-choline PET/CT predicts PCa-specific survival in PCa patients treated with radical prostatectomy who develop biochemical failure during androgen-deprivation therapy. If independent or multicenter confirmation of these findings is obtained, 11Ccholine PET/CT might be more widely used in the follow-up of PCa patients for tailoring salvage therapy. Copyright © 2014 by the Society of Nuclear Medicine and Molecular Imaging, Inc.

Giovacchini, G., Picchio, M., Garcia Parra, R., Briganti, A., Abdollah, F., Gianolli, L., et al. (2014). 11C-Choline PET/CT predicts prostate cancer-specific survival in patients with biochemical failure during androgen-deprivation therapy. THE JOURNAL OF NUCLEAR MEDICINE, 55(2), 233-241 [10.2967/jnumed.113.123380].

11C-Choline PET/CT predicts prostate cancer-specific survival in patients with biochemical failure during androgen-deprivation therapy

MESSA, MARIA CRISTINA;FAZIO, FERRUCCIO
2014

Abstract

Several studies have shown that 11C-choline PET/CT may be useful for restaging prostate cancer (PCa) patients with biochemical failure after radical prostatectomy. However, validation of 11C-choline PET/CT findings scarcely relied on histologic findings, and prognostic implications of 11C-choline PET/CT are currently unknown. The aim of this study was to assess whether 11C-choline PET/CT predicts survival in PCa patients. Methods: This retrospective study included 195 PCa patients treated with radical prostatectomy who underwent 11C-choline PET/CT from December 1, 2004, to July 31, 2007, due to biochemical failure (prostate-specific antigen > 0.2 mg/mL) during androgen-deprivation therapy. PCa-specific survival was computed as the interval from radical prostatectomy to PCa-specific death. Results: The median interval after radical prostatectomy was 8.9 y (95% confidence interval [CI], 1.7-18.9 y). The median follow-up after 11C-choline PET/CT was 4.5 y (95% CI, 0.4-8.5 y). 11C-choline PET/CT results were positive in 57% of patients. The median PCa-specific survival was 16.4 y (95% CI, 14.0-18.8 y) in patients with negative 11C-choline PET/CT results and 11.2 y (95% CI, 9.8-12.6 y) in patients with positive 11C-choline PET/CT results (log-rank: x2 = 19.3, P < 0001). At multivariate analysis, statistical significance was obtained for 11C-choline PET/CT (hazard ratio, 2.53; 95% CI, 1.41-4.53; P = 0.002), prostate-specific antigen (hazard ratio, 1.03; 95% CI, 1.00-1.05; P = 0.037), and Gleason score (>7: hazard ratio, 2.49; 95% CI, 1.25-4.95; P = 0.009). Patients with pathologic 11C-choline uptake in the prostatic bed or in pelvic or retroperitoneal lymph nodes had longer PCaspecific survival (median, 12.1 y; 95% CI, 10.5-13.7 y) in comparison to patients with pathologic tracer uptake in the skeleton (median, 9.9 y; 95% CI, 6.8-13.1 y) (log-rank: x2 = 6.5, P < 0.010). Two internally validated nomograms predicted 10- and 15-y PCa-specific survival probability with an accuracy of 76% and 74%, respectively. In an ancillary analysis, we also showed that 11C-choline PET/CT predicts PCa-specific survival after PET/CT, with similar statistical power. Conclusion: 11C-choline PET/CT predicts PCa-specific survival in PCa patients treated with radical prostatectomy who develop biochemical failure during androgen-deprivation therapy. If independent or multicenter confirmation of these findings is obtained, 11Ccholine PET/CT might be more widely used in the follow-up of PCa patients for tailoring salvage therapy. Copyright © 2014 by the Society of Nuclear Medicine and Molecular Imaging, Inc.
Articolo in rivista - Articolo scientifico
Biochemical failure; PCa-specific survival;
PCa-specific survival; 11C-choline PET/CT; biochemical failure
English
2014
55
2
233
241
none
Giovacchini, G., Picchio, M., Garcia Parra, R., Briganti, A., Abdollah, F., Gianolli, L., et al. (2014). 11C-Choline PET/CT predicts prostate cancer-specific survival in patients with biochemical failure during androgen-deprivation therapy. THE JOURNAL OF NUCLEAR MEDICINE, 55(2), 233-241 [10.2967/jnumed.113.123380].
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/50871
Citazioni
  • Scopus 83
  • ???jsp.display-item.citation.isi??? 79
Social impact