0000000000190579
AUTHOR
A. Collado
Optimizing the clinical utility of PCA3 to diagnose prostate cancer in initial prostate biopsy.
Background: PCA3 has been included in a nomogram outperforming previous clinical models for the prediction of any prostate cancer (PCa) and high grade PCa (HGPCa) at the initial prostate biopsy (IBx). Our objective is to validate such IBx-specific PCA3-based nomogram. We also aim to optimize the use of this nomogram in clinical practice through the definition of risk groups. Methods: Independent external validation. Clinical and biopsy data from a contemporary cohort of 401 men with the same inclusion criteria to those used to build up the reference’s nomogram in IBx. The predictive value of the nomogram was assessed by means of calibration curves and discrimination ability through the area…
PCA3 como biomarcador de segunda línea en un programa de screening oportunista prospectivo, aleatorizado y controlado
Resumen Objetivos Determinar el comportamiento del PCA3 como un marcador de segunda linea en un programa de cribado oportunista de cancer de prostata (CaP) y su comparacion con la calculadora de riesgo 3 del cribado aleatorizado europeo en cancer de prostata (ERSPC RC-3). Material y metodos Un total de 5.199 hombres de 40-75 anos se hicieron la prueba del antigeno prostatico especifico (PSA) y un tacto rectal (TR). Aquellos con TR normal y PSA ≥ 3 ng/ml se realizaron un PCA3. Todos los hombres con PCA3 ≥ 35 se hicieron biopsia inicial (BxI) —12 cilindros—. Aquellos con PCA3 Resultados PCA3 se testo en 838 hombres (16,1%). En los grupos PCA3(+) y PCA3(–), las tasas de deteccion global de CaP…
Immunohistochemical Expression of Ki-67 Antigen, Cox-2 and Bax/Bcl-2 in Prostate Cancer; Prognostic Value in Biopsies and Radical Prostatectomy Specimens
Abstract Purposes: To elucidate the prognostic value of the immunohistochemical (IHC) expression of Bcl-2, Bax, Cox-2 and Ki-67 antigen in biopsy cores (C) and surgical specimens (SP) of prostate cancer (PC) and to determine the C to SP reproducibility. Material and methods: The IHC study was carried out in 91 patients operated by means of radical prostatectomy (RP) with available formalin-fixed paraffin-embedded material from both C and SP. Results: The IHC expression of Bcl-2 in C and SP was very low (5%). Bax was expressed in almost all the patients and did not show any prognostic value. We observed a good reproducibility between C and SP for all molecules except with Bax. In prostate C,…
Optimización de un programa de cribado oportunista de cáncer de próstata; ensayo aleatorizado prospectivo del papel del PSA y del PCA3 en uso secuencial
Resumen Objetivos Reducir el numero de biopsias (Bx) innecesarias en un programa de cribado oportunista en cancer de prostata (CaP). Material y metodos Estudio prospectivo y aleatorizado evaluando el PCA3 como biomarcador de segunda linea. De septiembre de 2010 a septiembre de 2012 2.366 hombres con edad en rango 40-74 anos, y mas de 10 anos de expectativa de vida, fueron estudiados mediante PSA y tacto rectal (TR), excluyendo los biopsiados previamente o con infeccion urinaria reciente. Ante un TR sospechoso y/o PSA > 3 ng/ml se les realizo un PCA3. A todos aquellos con PCA3 ≥ 35 se les realizo una Bx inicial (IBx) —12 cilindros—. Con PCA3 0,5 ng/ml a 6 meses o PSAv > 0,75 ng/ml/ano. Res…
Optimizing prostate cancer screening; prospective randomized controlled study of the role of PSA and PCA3 testing in a sequential manner in an opportunistic screening program
Abstract Objectives To reduce unnecessary biopsies (Bx) in an opportunistic screening programme of prostate cancer. Material and methods We performed a prospective evaluation of PCA3 as a second-line biomarker in an opportunistic screening for prostate cancer (PCa). From September 2010 until September 2012, 2,366 men, aged 40–74 years and with >10 years life expectancy, were initially screened with PSA/digital rectal examination (DRE). Men with previous Bx or with recent urine infections were excluded. Men with abnormal DRE and/or PSA > 3 ng/ml were submitted for PCA3. All men with PCA3 ≥ 35 underwent an initial biopsy (IBx) —12cores—. Men with PCA3 .5 ng/ml at 4-6months or PSAv > .75 ng/…
PCA3 as a second-line biomarker in a prospective controlled randomized opportunistic prostate cancer screening programme
Objectives: PCA3 performance as a single second line biomarker is compared to the European Randomised Study of Screening for Prostate Cancer risk calculator model 3 (ERSPC RC-3) in an opportunistic screening in prostate cancer (PCa). Material and methods: 5,199 men, aged 40-75y, underwent prostate-specific antigen (PSA) screening and digital rectal examination (DRE). Men with a normal DRE and PSA >= 3 ng/ml had a PCA3 test done. All men with PCA3 >= 35 underwent an initial biopsy (IBx) 12 cores. Men with PCA3 = 3 ng/ml and DRE is normal, IBx could be avoided in 12.5% less than if ERSPC RC-3 is used and would reduce the false negative cases by 36.2%. At a FU of 21.7 months, this dual protoco…