Startling Fact: PSA Testing Frequency Changes PSA Doubling Time – A Time Honored Surrogate Biomarker is Not Valid!

In our quest to understand our prostate cancer we have developed many “measures” of our disease aggressiveness and progression.  Many of these measures are generally accepted has valid, but many have never been validated. One example is the prognostic nature of PSA Doubling Time (PSADT) in men with biochemically recurrent prostate cancer (BRPC or PSA [...]

Metastasis-Free Survival Is A Possible Biomarker for Overall Survival

Researchers at Johns Hopkins has concluded that metastasis-free survival appeared to independently predictor of overall survival (OS) in men with recurrent prostate cancer who underwent androgen deprivation therapy (ADT) after developing metastases. Men with biochemically recurrent prostate cancer (PSA only) tend to survive for long periods so the FDA gold standard for clinical trial endpoint [...]

Study Shows that the Metastasis-Free Period Affects Prostate Cancer Patient Survival

A study from Michael T. Schweizer, MD, and colleagues at Johns Hopkins University in Baltimore Md. concluded that the longer the metastasis-free survival after a radical prostatectomy the longer overall survival in men who experience biochemical recurrence (PSA only recurrence) of their prostate cancer. This conclusion was made from a retrospectively study of 450 men [...]

Impact of Postoperative PSA Scores on Recurrence and the use of Salvage Therapy on the Risk of Death

In a study conducted by Choueiri et al. published in Cancer it was suggested that men who have prostate cancer that was treated by a radical prostatectomy (RP) who then had a long time to a biochemical recurrence (BCR) or a long PSA doubling time after a BCR have no higher overall risk of death [...]

Efficacy of a Modified Androgen Blockade in Prostate Cancer Patients with Biochemical Failure

How to best treat men with a prostate cancer PSA only recurrence (biochemical recurrence) still remains controversial. Hormone therapy (ADT) using a combination of a 5-alpha reductase inhibitor and an antiandrogen without conventional gonadal androgen suppression (where testosterone levels are not suppressed) may allow control of the prostate-specific antigen (PSA) with less morbidity. METHODS: In [...]

Changes of PSA Doubling Time is Associated with Disease Progression in Men with Biochemically Relapsed Prostate Cancer Treated with Intermittent Androgen Deprivation

Researchers at the The Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins School of Medicine, Baltimore, Maryland studied the relationship between the change of PSA doubling time (PSADT) and disease progression during intermittent androgen deprivation (IAD) therapy for prostate cancer. They retrospectively analyzed the data from 96 men diagnosed with biochemically relapsed prostate cancer (BRPC) who [...]

Phase II Study of Nitric Oxide for Men with Increasing PSAs After Primary Treatment for Prostate Cancer

Biochemical recurrence of prostate cancer after primary therapy (PSA only) remains a significant problem.   Deciding on the best treatment options for men who have failed primary therapy without documented evidence of metastatic disease remains limited and controversial. Androgen deprivation therapy (ADT), the usual next step for biochemical recurrence does prolong the time to further disease [...]

Time Between Treatment And PSA Recurrence Predicts Death From Prostate Cancer

According to a study last year at Fox Chase Cancer Center, men whose prostate specific antigen (PSA) rise within 18 months of having primary radiotherapy are more likely to develop advanced prostate cancer and die of their disease. […]

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