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How We Know What Drugs Might Work In Combination With Each Other – Bringing The Next Big Breakthrough in Prostate Cancer Treatment

Many of the posts that I have written discussed the need for evaluating our current advanced prostate cancer drugs in both combinations and their sequencing. We have a number of new drugs, but we don’t understand how best to sequence them, or whether or not some drugs would do better and extend life by taking [...]

Clinical Benefit of Docetaxel or Enzalutamide After Progression on First-Line Abiraterone and Prednisone in Men with Metastatic Castration Resistant Prostate Cancer (mCRPC) *

Abiraterone acetate (AA) or Zytiga has demonstrated a survival benefit in the pre-chemotherapy setting for men with advanced prostate cancer that has become castrate resistant (mCRPC). As a result it is in widespread clinical use in the United States prior to the use of chemotherapy with docetaxel.  Since its FDA approval post chemotherapy there has [...]

An Analysis of the Clinical Benefit of Chemotherapy & Xtandi Post Zytiga in Men with Metastatic Castration Resistant Prostate Cancer

The FDA approved Abiraterone acetate (Zytiga) plus prednisone because it demonstrated a survival benefit for men with metastatic castrate resistant prostate cancer (mCRPC) in the pre-chemotherapy setting.  Given the newness of the approval of Zytiga in this disease stage there is a lack of data on how Zytiga affects the efficacy of enzalutamide (Xtandi) or [...]

Does Prior Response to Zytiga Affect Subsequent Activity of Docetaxel in Men with Metastatic Castration-Resistant Prostate Cancer (mCRPC)?

Given all the newly approved drugs available to us to treat advanced prostate cancer there now are many questions about the optimal sequencing of these drugs and whether earlier use of one causes cross-resistance to another. Recently, it was reported that chemotherapy with docetaxel is inactive in men with metastatic castrate resistant prostate cancer (mCRPC) [...]

Sorting Out Prostate Cancers that Are Resistant to Enzalutamide (Xtandi)

Over the last several years’ prostate cancer treatment options for men with advanced prostate cancer has gone from rags to riches.  We now have multiple options for treatment and there is every indication that the number of options will continue to grow. However, we do see that not all men will respond to all treatments.  [...]

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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