Cited by 43Prostate Cancer Treatment and ResearchProstate Cancer Diagnosis and TreatmentMedical Imaging Techniques and Applications

Prostate-Specific Membrane Antigen Uptake and Survival in Metastatic Castration-Resistant Prostate Cancer

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Vlachostergios, Panagiotis J., Niaz, Muhammad Junaid, Sun, Michael, Mosallaie, Seyed Ali, Thomas, Charlene, Christos, Paul J., Osborne, Joseph R., Molina, Ana M. +3 more·2021·Frontiers in Oncology

Abstract

Background: Prostate-specific membrane antigen (PSMA) imaging has been suggested as highly sensitive modality for detection of metastases in patients with biochemically recurrent or advanced prostate cancer (PCa). PSMA expression is associated with grade and stage and has a relationship with androgen receptor signaling. The aim of this study was to evaluate the prognostic utility of radiographic PSMA expression in men with metastatic castration-resistant prostate cancer (mCRPC). Methods: Patients with mCRPC and available baseline PSMA imaging were studied. Images by planar/single-photon emission computed tomography (SPECT) or positron emission tomography (PET)/CT were reviewed. Planar/SPECT images were scored semi-quantitatively and PET/CT scored quantitatively with comparison of tumor uptake to liver uptake on a scale of 0–4 in order to determine an imaging score (IS). The IS (high: 2–4 versus low: 0–1), subsequent receipt of life-prolonging systemic therapies (taxane chemotherapy, potent androgen receptor pathway inhibitors, sipuleucel-T, and radium-223), and the CALGB prognostic risk stratification of patients were analyzed according to overall survival (OS) in univariate and multivariate Cox’s proportional hazards models. Results: High PSMA expression (IS 2–4) was found in 179 (75.21%) patients, and 59 (24.79%) patients had low PSMA uptake. The median OS of the entire cohort was 16.8 (95%CI: 14.9–19.3) months. Patients with a high IS had a significantly shorter OS of 15.8 (95%CI 13.0–18.1) months compared to those with low expression [22.7 (95%CI: 17.7–30.7) months, p = 0.002]. After accounting for use of life-prolonging therapies (p<0.001) and CALGB prognostic groups (p = 0.001), high PSMA IS emerged as an independent prognostic factor for OS [HR(95%CI): 1.7 (1.2–2.2); p = 0.003]. Conclusion: Presence of high radiographic PSMA expression on SPECT or PET/CT may portend a poor prognosis in patients with mCRPC treated with standard systemic therapies. This provides implications for therapeutic targeting of PSMA-avid disease as a means to improve outcomes.

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Authors
Vlachostergios, P. J., Niaz, M. J., Sun, M., Mosallaie, S. A., Thomas, C., Christos, P. J., Osborne, J. R., Molina, A. M., Nanus, D. M., Bander, N. H., & Tagawa, S. T.
Affiliations
Weill Cornell Medicine (US)
Corresponding author
Tagawa, Scott T.
Venue
Frontiers in Oncology
Published
2021-02-18
Volume
11
Pages
630589-630589
ISSN
2234-943X (ISSN-L)
OpenAlex
W3131506832
Cited by
43
References
39
Citations by year
2026: 2 · 2025: 6 · 2024: 8 · 2023: 7 · 2022: 16 · 2021: 4
FWCI
5.66
Type
journal article
Language
en
Open access
Locations
  • Frontiers in Oncology (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • U.S. Department of Defense (W81XWH-13-PCRP-CCA, W81XWH-09-1-0596, W81XWH-04-1-0267, W81XWH-14-2-0159, W81XWH-17-PCRP-IA)
  • Prostate Cancer Foundation
  • National Institutes of Health (ULI RR024996, 1-KL2-RR024997-01, PTBF5405, 7R01CA207645)
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Prostate Cancer Treatment and Research
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Prostate Cancer Diagnosis and Treatment
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Medical Imaging Techniques and Applications
Keywords
prostate-specific membrane antigen, PSMA imaging, metastatic castration-resistant prostate cancer, prognostic factors, overall survival, radiopharmaceutical uptake, androgen receptor signaling, sipuleucel-T, radium-223, androgen receptor pathway inhibitors, taxane-based chemotherapy, hepatic uptake, SPECT/CT

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