TY - JOUR
T1 - Predicting Prostate Cancer Progression as a Function of ETS-related Gene Status, Race, and Obesity in a Longitudinal Patient Cohort
AU - Cullen, Jennifer
AU - Young, Denise
AU - Chen, Yongmei
AU - Degon, Michael
AU - Farrell, James
AU - Sedarsky, Jason
AU - Baptiste, Wagner
AU - Rosen, Philip
AU - Tolstikov, Vladimir
AU - Kiebish, Michael
AU - Kagan, Jacob
AU - Srivastava, Sudhir
AU - Kuo, Huai Ching
AU - Moncur, Joel T.
AU - Rosner, Inger L.
AU - Narain, Niven
AU - Akmaev, Viatcheslav
AU - Petrovics, Gyorgy
AU - Dobi, Albert
AU - McLeod, David G.
AU - Srivastava, Shiv
AU - Sesterhenn, Isabell A.
N1 - Publisher Copyright:
© 2017 European Association of Urology
PY - 2018/12
Y1 - 2018/12
N2 - Background: ETS-related gene (ERG) oncogenic activation is the most common genomic alteration in prostate cancer (CaP) although it occurs less frequently in African American (AA) versus Caucasian (CA) patients, and the potential role of ERG as a prognostic marker has not been confirmed. Objective: This study was conducted to confirm strong racial variation in the prevalence of ERG oncoprotein expression and to examine ERG oncoprotein expression, race, and body mass index as independent and joint predictors of CaP biochemical recurrence (BCR) following radical prostatectomy (RP). Design, setting, and participants: A retrospective cohort study of CA and AA CaP patients enrolled at Walter Reed National Military Medical Center, who donated clinically annotated, whole-mounted, prostatectomy specimens between 1994 and 2014 following RP, was conducted. Outcome measurements and statistical analysis: Kaplan–Meier (KM) estimation curves and multivariable Cox proportional hazards models were used to examine time to BCR as a function of ERG status, patient race, and obesity. Results and limitations: Among 930 eligible patients (36.1% AA and 63.9% CA), with 155 (16.7%) BCR events and a median follow-up time of 5.1 yr, ERG oncoprotein expression was significantly less prevalent in index tumors of AA versus CA patients (23.2% vs 49.3%; p < 0.0001). KM curves showed significantly poorer BCR-free survival for CA patients with ERG-negative index tumors but not for AA patients. Race-stratified multivariable analyses revealed a significant association between ERG-negative index tumors and poorer BCR-free survival among CA patients (hazards ratio = 1.67, confidence interval = 1.07, 2.61; p = 0.024). Less heterogeneity in ERG expression among AA patients may reduce the ability to show its association with BCR. Conclusions: Striking racial variation in ERG oncoprotein expression was confirmed. A novel observation was the importance of index tumor ERG-negative status in predicting CaP progression for CA patients. Patient summary: ETS-related gene (ERG) typing of tumors may be useful in prognosticating prostate cancer aggressiveness.
AB - Background: ETS-related gene (ERG) oncogenic activation is the most common genomic alteration in prostate cancer (CaP) although it occurs less frequently in African American (AA) versus Caucasian (CA) patients, and the potential role of ERG as a prognostic marker has not been confirmed. Objective: This study was conducted to confirm strong racial variation in the prevalence of ERG oncoprotein expression and to examine ERG oncoprotein expression, race, and body mass index as independent and joint predictors of CaP biochemical recurrence (BCR) following radical prostatectomy (RP). Design, setting, and participants: A retrospective cohort study of CA and AA CaP patients enrolled at Walter Reed National Military Medical Center, who donated clinically annotated, whole-mounted, prostatectomy specimens between 1994 and 2014 following RP, was conducted. Outcome measurements and statistical analysis: Kaplan–Meier (KM) estimation curves and multivariable Cox proportional hazards models were used to examine time to BCR as a function of ERG status, patient race, and obesity. Results and limitations: Among 930 eligible patients (36.1% AA and 63.9% CA), with 155 (16.7%) BCR events and a median follow-up time of 5.1 yr, ERG oncoprotein expression was significantly less prevalent in index tumors of AA versus CA patients (23.2% vs 49.3%; p < 0.0001). KM curves showed significantly poorer BCR-free survival for CA patients with ERG-negative index tumors but not for AA patients. Race-stratified multivariable analyses revealed a significant association between ERG-negative index tumors and poorer BCR-free survival among CA patients (hazards ratio = 1.67, confidence interval = 1.07, 2.61; p = 0.024). Less heterogeneity in ERG expression among AA patients may reduce the ability to show its association with BCR. Conclusions: Striking racial variation in ERG oncoprotein expression was confirmed. A novel observation was the importance of index tumor ERG-negative status in predicting CaP progression for CA patients. Patient summary: ETS-related gene (ERG) typing of tumors may be useful in prognosticating prostate cancer aggressiveness.
KW - Biochemical recurrence
KW - ERG fusion
KW - Obesity
KW - Prostate cancer
KW - Race
UR - http://www.scopus.com/inward/record.url?scp=85014762195&partnerID=8YFLogxK
U2 - 10.1016/j.euf.2017.02.016
DO - 10.1016/j.euf.2017.02.016
M3 - Article
C2 - 28753864
AN - SCOPUS:85014762195
SN - 2405-4569
VL - 4
SP - 818
EP - 824
JO - European Urology Focus
JF - European Urology Focus
IS - 6
ER -