Prostate-Specific Membrane Antigen Is a Biomarker for Residual Disease following Neoadjuvant Intense Androgen Deprivation Therapy in Prostate Cancer.
J Urol
; 208(1): 90-99, 2022 07.
Article
en En
| MEDLINE
| ID: mdl-35227084
ABSTRACT
PURPOSE:
Neoadjuvant intense androgen deprivation therapy (iADT) can exert a wide range of histological responses, which in turn are reflected in the final prostatectomy specimen. Accurate identification and measurement of residual tumor volumes are critical for tracking and stratifying patient outcomes. MATERIALS ANDMETHODS:
The goal of this current study was to evaluate the ability of antibodies against prostate-specific membrane antigen (PSMA) to specifically detect residual tumor in a cohort of 35 patients treated with iADT plus enzalutamide for 6 months prior to radical prostatectomy.RESULTS:
Residual carcinoma was detected in 31 patients, and PSMA reacted positively with tumor in all cases. PSMA staining was 96% sensitive for tumor, with approximately 82% of benign regions showing no reactivity. By contrast, PSMA positively reacted with 72% of benign regions in a control cohort of 37 untreated cases, resulting in 28% specificity for tumor. PSMA further identified highly dedifferentiated prostate carcinomas including tumors with evidence of neuroendocrine differentiation.CONCLUSIONS:
We propose that anti-PSMA immunostaining be a standardized marker for identifying residual cancer in the setting of iADT.Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Neoplasias de la Próstata
Tipo de estudio:
Diagnostic_studies
/
Prognostic_studies
Límite:
Humans
/
Male
Idioma:
En
Revista:
J Urol
Año:
2022
Tipo del documento:
Article