New options after standard hormone therapy has failed

We apparently managed to overlook a series of three review and commentary articles published in Oncology in May this year that dealt with the evolving options that have already — or will soon — come available for the treatment of castration-resistant prostate cancer (CRPC).

Low-dose DES in the management of CRPC

The value of low-dose diethylstilbestrol (DES) in the management of men with advanced and castration-resistant prostate cancer (CRPC) comes up as a regular topic for review and discussion. Before development of the LHRH agonists, DES was the most commonly used — and much studied — drug for the treatment of advanced (metastatic) prostate cancer.

Combining a TKI with bicalutamide in men with CRPC

We have reported on a number of attempts to use tyrosine kinase inhibitors (TKIs) — alone or in combination with chemotherapy — in the treatment of men with castration-resistant prostate cancer (CRPC). Limited activity or efficacy has been reported to date.

Impact of abiraterone prior to chemotherapy — maybe not 4 years, but …

A story on the Bloomberg.com web site gives information about a patient with castration-resistant prostate cancer (CRPC) who has had a zero-level PSA for 40 months since starting on a clinical trial of abiraterone actetate in early 2008.

Wishful thinking about abiraterone acetate in CRPC

An article from Thursday’s “The Pink Sheet”, posted on the OncologySTAT web site today, is already asking questions about the potential future use of abiraterone acetate in patients with non-metastatic, castration-resistant prostate cancer (CRPC).

Cisplatin as second-line chemotherapy for docetaxel-refractory prostate cancer

An Italian research team has published data from a small Phase II clinical trial suggesting that cisplatin + prednisone has activity in the treatment of men with castration-resistant prostate cancer (CRPC) who have already progressed after treatment with a docetaxel-based chemotherapy regimen.

For those who want to learn more about new treatments for CRPC

Patients and others with a strong interest in understanding the ways in which new drugs like abiraterone acetate and MDV3100 are likely to change the way we treat advanced forms of prostate cancer might be interested in a webcast based on a satellite symposium held at the recent Genitourinary Cancers Symposium in Orlando.

AstraZeneca stops second trial of zibotentan

According to a media release issued by AstraZeneca earlier today, the company has stopped a second clinical trial of their endothelin receptor antagonist zibotentan because “zibotentan monotherapy was unlikely to meet its primary efficacy endpoints … and therefore unlikely to benefit patients with non-metastatic CRPC.”

What is the future potential of abiraterone acetate?

An article by Mohler and Pantuck, published on line last week in the Journal of Urology, provides two perspectives on the future potential of abiraterone acetate in the treatment of prostate cancer.

KW-2170 not sufficiently active for use in men with CRPC

KW-2170 is a drug that had been undergoing early clinical trials in Australia for the treatment of men with castration-resistant prostate cancer (CRPC).

Two negatives don’t make a positive in patients with CRPC

Data from a small Phase II trial of cilengitide suggest that it  has minimal clinical effect in the treatment of men with non-metastatic, castration-resistant prostate cancer (CRPC). They also suggest that levels of circulating T-cells (CTCs) are of limited utility in monitoring the progression of this patient group.

Abiraterone acetate extends median survival by 3.9 months in mCRPC

The results of a randomized, double-blind, placebo-controlled, multi-center, Phase III clinical trial comparing abiraterone actetate + prednisone to a placebo + prednisone in men with metastatic castration-resistant prostate cancer (mCRPC) were presented today at the annual meeting of the European Society for Medical Oncology in Milan, Italy.

Acid-suppressive therapy + ketoconazole in men with CRPC

Ketoconazole has long been used as a “third-line” agent in men with castration-resistant prostate cancer (CRPC) who have progressive disease after standard forms of hormonal therapy. For some patients, ketoconazole can be clinically effective and cost-effective compared to other clinical options.

Pfizer discontinues Phase III clinical trial of Sutent in CRPC

An announcement yesterday has made it clear that sunitinib malate (Sutent) is unlikely to ever show significant clinical activity in the management of patients with advanced, castration-resistant prostate cancer (CRPC) after initial chemotherapy.

Older (and newer) drugs in the management of CRPC

On his Advanced Prostate Cancer blog site, Joel Nowak has just published a series of five brief articles on the opportunities offered by some older agents that are available for use as second-line therapies in the management of patients who have a rising PSA after treatment with standard forms of androgen deprivation therapy (ADT).

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