scholarly journals Longitudinal modeling of ultrasensitive and traditional prostate-specific antigen and prediction of biochemical recurrence after radical prostatectomy

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Teemu D. Laajala ◽  
Heikki Seikkula ◽  
Fatemeh Seyednasrollah ◽  
Tuomas Mirtti ◽  
Peter J. Boström ◽  
...  
Keyword(s):  
Radical Prostatectomy ◽  
Prostate Specific Antigen ◽  
Biochemical Recurrence ◽  
Specific Antigen ◽  
University Hospital ◽  
Mixed Effect ◽  
Web Based ◽  
Post Surgery ◽  
Validation Set

Abstract Ultrasensitive prostate-specific antigen (u-PSA) remains controversial for follow-up after radical prostatectomy (RP). The aim of this study was to model PSA doubling times (PSADT) for predicting biochemical recurrence (BCR) and to capture possible discrepancies between u-PSA and traditional PSA (t-PSA) by utilizing advanced statistical modeling. 555 RP patients without neoadjuvant/adjuvant androgen deprivation from the Turku University Hospital were included in the study. BCR was defined as two consecutive PSA values >0.2 ng/mL and the PSA measurements were log 2 -transformed. One third of the data was reserved for independent validation. Models were first fitted to the post-surgery PSA measurements using cross-validation. Major trends were then captured using linear mixed-effect models and a predictive generalized linear model effectively identified early trends connected to BCR. The model generalized for BCR prediction to the validation set with ROC-AUC of 83.6% and 95.1% for the 1 and 3 year follow-up censoring, respectively. A web-based tool was developed to facilitate its use. Longitudinal trends of u-PSA did not display major discrepancies from those of t-PSA. The results support that u-PSA provides useful information for predicting BCR after RP. This can be beneficial to avoid unnecessary adjuvant treatments or to start them earlier for selected patients.

Role of ultrasensitive prostate-specific antigen in the follow-up of prostate cancer after radical prostatectomy

2015 ◽  
Vol 33 (1) ◽  
pp. 16.e1-16.e7 ◽  
Author(s):  
Heikki Seikkula ◽  
Kari T. Syvänen ◽  
Samu Kurki ◽  
Tuomas Mirtti ◽  
Pekka Taimen ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Radical Prostatectomy ◽  
Prostate Specific Antigen ◽  
Specific Antigen

scholarly journals Obesity, risk of biochemical recurrence, and prostate-specific antigen doubling time after radical prostatectomy: results from the SEARCH database

2018 ◽  
Vol 124 (1) ◽  
pp. 69-75 ◽  
Author(s):  
Stephen J. Freedland ◽  
Brandee L. Branche ◽  
Lauren E. Howard ◽  
Robert J. Hamilton ◽  
William J. Aronson ◽  
...  
Keyword(s):  
Radical Prostatectomy ◽  
Prostate Specific Antigen ◽  
Biochemical Recurrence ◽  
Doubling Time ◽  
Specific Antigen ◽  
Obesity Risk

Biochemical Recurrence after Radical Prostatectomy

2018 ◽  
Author(s):  
Dunia Khaled ◽  
Scott Delacroix ◽  
Brian Chapin
Keyword(s):  
Prostate Cancer ◽  
Radiation Therapy ◽  
Lymph Node ◽  
Radical Prostatectomy ◽  
Prostate Specific Antigen ◽  
Lymph Node Dissection ◽  
Biochemical Recurrence ◽  
Specific Antigen ◽  
Node Dissection ◽  
Salvage Lymph Node Dissection

After receiving local treatment, many patients will develop a biochemical recurrence (BCR) in the absence of detectable distant disease (cM0) and comprise a significant proportion (20.1%) of prostate cancer disease states. The natural history of patients with BCR ranges from those with indolent, nonprogressive, slow prostate-specific antigen (PSA)-only progression to those ultimately destined to develop metastases and progress to a cancer-specific death. Pathologic predictors of BCR, clinical progression, and cancer-specific mortality are well established in the literature, although multiple novel predictors are emerging, which are highlighted. Traditional imaging cannot reliably distinguish local versus distant microscopic metastasis at the PSA levels that have been shown to confer survival advantage for salvage radiation therapy. We review past and present imaging standards and discuss novel imaging modalities, which may improve staging and offer opportunity for novel salvage therapies, including salvage lymph node dissection and stereotactic beam radiation therapy. With an emphasis on BCR after radical prostatectomy, both curative and palliative treatments are reviewed. This review contains 7 figures, 6 tables and 73 references Key words: biochemical recurrence, clinically undetectable metastases, molecular imaging, monitoring treatment response, prostate cancer, radical prostatectomy, rising prostate-specific antigen, salvage lymph node dissection, salvage radiation  

Radical Prostatectomy Versus Observation in Early Prostate Cancer

2021 ◽  
pp. 31-36
Author(s):  
Philipp Dahm
Keyword(s):  
Prostate Cancer ◽  
Radical Prostatectomy ◽  
Prostate Specific Antigen ◽  
Cancer Mortality ◽  
Watchful Waiting ◽  
Specific Antigen ◽  
Prostate Cancer Mortality ◽  
Cancer Group

This chapter provides a summary of the landmark Scandinavian Prostate Cancer Group Study Number 4 trial of men with clinically localized prostate cancer from the pre–prostate-specific antigen (PSA) era who were randomized to radical prostatectomy versus watchful waiting and were followed long term. With follow-up of more than 20 years, the results favored surgery with regard to prostate cancer mortality.

scholarly journals Prostate-specific antigen bounce after 125I-brachytherapy for prostate cancer is a favorable prognosticator in patients who are biochemical recurrence-free at 4 years and correlates with testosterone

2019 ◽  
Vol 50 (1) ◽  
pp. 58-65 ◽  
Author(s):  
Yasushi Nakai ◽  
Nobumichi Tanaka ◽  
Isao Asakawa ◽  
Satoshi Anai ◽  
Makito Miyake ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Prostate Specific Antigen ◽  
Biochemical Recurrence ◽  
Specific Antigen ◽  
Testosterone Levels ◽  
Psa Bounce ◽  
125I Brachytherapy ◽  
Psa Nadir ◽  
Free Rate

Abstract Background Because patients with prostate-specific antigen (PSA) bounce do not experience biochemical recurrence (BCR) until PSA bounce occurs, the period until PSA bounce ends can be considered the so-called lead-time bias. Therefore, we evaluated differences in BCR-free rate in prostate cancer patients who were BCR-free 4 years after 125I-brachytherapy alone. Furthermore, we evaluated predictors for PSA bounce and the correlation between testosterone and PSA bounce. Methods From 2004 to 2012, 256 patients with prostate adenocarcinoma underwent 125I-brachytherapy alone. PSA and testosterone levels were monitored prior to 125I-brachytherapy, at 1, 3, 6, 12, 18, 24, 30, 36, 42, 48, 54 and 60 months after 125I-brachytherapy and yearly after 5-year follow-up. PSA bounce was defined as ≥0.2 ng/ml increase above the interval PSA nadir, followed by a decrease to nadir or below. Results BCR-free rate in patients with PSA bounce (100% 7-year BCR-free rate) was significantly better (P < 0.044) than that in patients without PSA bounce (95.7% 7-year BCR-free rate) in patients who were BCR-free 4 years after 125I-brachytherapy alone (n = 223). Age was the only predictor (odds ratio: 0.93, 95% confidence interval: 0.88–0.98, P = 0.004) for PSA bounce (n = 177). The testosterone level at PSA bounce was significantly higher (P = 0.036) than that at nadir before PSA bounce (87 cases). Conclusions Patients with PSA bounce had good BCR-free rate even in patients who were BCR-free 4 years after 125I-brachytherapy alone. Testosterone levels were higher at PSA bounce; increased testosterone levels may be a cause of PSA bounce.

Prostate-specific antigen measured 3 months after radical prostatectomy as a new predictor of biochemical recurrence

2014 ◽  
Vol 20 (1) ◽  
pp. 171-175 ◽  
Author(s):  
Hitoshi Inoue ◽  
Kensaku Nishimura ◽  
Seiji Yamaguchi ◽  
Norio Nonomura ◽  
Tsuneo Hara
Keyword(s):  
Radical Prostatectomy ◽  
Prostate Specific Antigen ◽  
Biochemical Recurrence ◽  
Specific Antigen
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