A Surprising Biochemical Response to Ketoconazole In Post-Chemotherapy mCRPC Men When Compared to the Zytiga Trial Results

It has always been assumed that Ketoconazole, when used for the treatment of men with metastatic castration resistant prostate cancer (mCRPC), would not be as potent as abiraterone (Zytiga), but there has never been any head to head comparison to demonstrate this assumption! Ketoconazole is a less potent inhibitor of the CYP-17 enzyme, the mode [...]

NICE Recommends Xtandi for Men with Prior Zytiga Exposure – Good News for our Brothers and Ammunition to Appeal Step Therapy

There is some really good news for those of us who live in areas where The National Institute for Health and Care Excellence (NICE) recommends drug approvals.  NICE has issued a final draft guidance recommending that men with hormone-relapsed prostate cancer (castrate resistant) that has metastasized and has been treated with docetaxel (chemotherapy) should be [...]

Impact of Prior Abiraterone Acetate (Zytiga) on Subsequent Activity of Docetaxel (Chemotherapy) in Men with Metastatic Castration-Resistant Prostate Cancer

The explosion of new therapies for men with metastatic castration resistant prostate cancer (mCRPC) raises serious questions about the optimal sequencing of these new treatments as well as whether cross-resistance occurs between these drugs. It was recently reported that chemotherapy with docetaxel (D) is not effective in in men who did not have a ? [...]

More Issues Raised About Cross-Resistance Between Abiraterone and Enzalutamide

Some of my posts over the last week or two have discussed the issue of the development of cross-resistance of two of our newest treatments for advanced prostate cancer.  These drugs are abiraterone (Zytiga) and enzalutamide (Xtandi). Currently, both of them are approved for use after a man has failed chemotherapy with docetaxel. In addition, [...]

There is Some Cross Resistance Developed Between Both the First Use of Zytiga and the First Use of Xtandi

On March 4, 2014 I wrote a post “Castrate Resistant Prostate Cancer- What to Do Next” (www.advancedprostatecancer.net/?p=4425). The basic theme of the post was about how difficult it is to know how to sequence the new drugs we have to treat advanced prostate cancer (metastatic castrate resistant prostate cancer aka mCRPC). In the post I [...]

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