Impact of 68Ga-PSMA-11 PET/CT on the Management of Prostate Cancer Patients with Biochemical Recurrence.

Published on Dec 14, 2017in The Journal of Nuclear Medicine7.887
· DOI :10.2967/JNUMED.117.202945
Jeremie Calais20
Estimated H-index: 20
(UCLA Medical Center),
Wolfgang P. Fendler30
Estimated H-index: 30
(UCLA Medical Center)
+ 14 AuthorsKen Herrmann2
Estimated H-index: 2
(UCLA Medical Center)
In this prospective survey of referring physicians, we investigated whether and how 68Ga-labeled prostate-specific membrane antigen 11 (68Ga-PSMA-11) PET/CT affects the implemented management of prostate cancer patients with biochemical recurrence (BCR). Methods: We conducted a prospective survey of physicians ({"type":"clinical-trial","attrs":{"text":"NCT02940262","term_id":"NCT02940262"}}NCT02940262) who referred 161 patients with prostate cancer BCR (median prostate-specific antigen value, 1.7 ng/mL; range, 0.05–202 ng/mL). Referring physicians completed one questionnaire before the scan to indicate the treatment plan without 68Ga-PSMA-11 PET/CT information (Q1; n = 101), one immediately after the scan to denote intended management changes (Q2; n = 101), and one 3–6 mo later to document the final implemented management (Q3; n = 56). The implemented management was also obtained via electronic chart review or patient contact (n = 45). Results: A complete documented management strategy (Q1 + Q2 + implemented management) was available for 101 of 161 patients (63%). Seventy-six of these (75%) had a positive 68Ga-PSMA-11 PET/CT result. The implemented management differed from the prescan intended management (Q1) in 54 of 101 patients (53%). The postscan intended management (Q2) differed from the prescan intended management (Q1) in 62 of 101 patients (61%); however, these intended changes were not implemented in 29 of 62 patients (47%). Pelvic nodal and extrapelvic metastatic disease on 68Ga-PSMA-11 PET/CT (PSMA T0N1M0 and PSMA T0N1M1 patterns) was significantly associated with implemented management changes (P = 0.001 and 0.05). Conclusion: Information from 68Ga-PSMA-11 PET/CT brings about management changes in more than 50% of prostate cancer patients with BCR (54/101; 53%). However, intended management changes early after 68Ga-PSMA-11 PET/CT frequently differ from implemented management changes.
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