CTCs

/CTCs

Ask For a Blood test to identify AR-V7 in Circulating Tumor Cells if you are starting Xtandi or Zytiga

One of the hot topics in the prostate cancer community is the value of detecting AR-V7 tumor cells circulating in the blood. AR-V7 tumor cells in the blood predicts response or failure of treatment with enzalutamide (Xtandi) or abiraterone (Zytiga). A recent study found that men who have AR-V7 circulating tumor cells in their blood will not [...]

Better Predicting Advanced Prostate Cancer Outcomes with NaF-PET/CT Scans

Imaging of prostate cancer has been improving by leaps and bounds over the last few years. Current imaging techniques are not sensitive enough to give us an accurate picture of the cancer. This means that we lose predictive abilities and don’t always have adequate information to make the best treatment decisions. It also means, in [...]

New Markers To Make Better Treatment Decisions For Prostate Cancer

Making treatment decisions once you have been diagnosed with prostate cancer is difficult. Often, it is impossible to accurately and reliably be able to predict the eventual course of the cancer. Prostate cancer, besides being one of the slower growing cancers, is also one of the deadliest. So good, informed decisions are vital. The original [...]

PET/CT Scans More Sensitive Than CT and Bone Scans For Detecting Metastatic Prostate Cancer

According to an article in the Journal of Nuclear Medicine, researchers compared a PET/CT scan using the radiotracer F-18 DCFBC to conventional imaging modalities — an expanded Tc-99m-methylene diphosphonate (MDP) bone scan and contrast-enhanced CT of the chest, abdomen and pelvis — to detect prostate-specific membrane antigen (PSMA), which is associated with prostate cancer metastases. [...]

CTC Heterogeneity Predicts Prostate Cancer Drug Sensitivity

This afternoon I am off to the American Society for Clinical Oncology Genitourinary Cancers Symposium (ASCO GU) in San Francisco. There has already been some information leaking to the media about some of the presentations that will be going on at the conference. One such “leak” is about  findings from Memorial Sloan Kettering Cancer Center [...]

CMS Continues To Limit Coverage For NaF-18 PET Scans For Bone Metastases

There has been a lot of buzz around the new scanning contrasts that have come into limited usage for evaluating metastasized cancer cells that are in the bones. Despite the enthusiasm from the prostate and breast cancer communities, CMS (Medicare) continues to limit its financial coverage for PET scans using the contrast NaF-18 even though [...]

On The Horizon – Tests That Can Inform Us If A Drug Will Work Before We Take The Drug

We have become very fortunate over the last 6 years because our arsenal of potential drugs to treat advanced, metastatic prostate cancer has grown. All of our new drugs extend life and most offer palliation of pain. As I have discussed in prior posts we are still in a quandary about how best to sequence [...]

The Development of A Novel Blood Biomarker for Detecting AR-V7 and Resistance to Zytiga and Xtandi

At the current AUA Annual Meeting going on in New Orleans, there was a presentation given by Haitao Zhang and colleagues. They described their work developing a novel blood-based assay (test) for detecting androgen receptor (AR) splice variants in men with advanced prostate cancer. Their work relies on the premise that AR-V7 expression underlies resistance [...]

An Update on the Circulating Tumor Cell Biomarker Panel (CTC) as Surrogate for Survival in Prostate Cancer

We are in desperate need of validated biomarkers, which can serve as surrogates for survival. Currently, our doctors must make decisions about which drugs to use and how long to stay on these drugs without any scientific backup or consensus driven direction to their decisions. Our clinical trials for evaluating survival of potential new advanced [...]

Using Circulating Tumor Cells To Evaluate Chemotherapy Efficacy Leading To Improved Clinical Decision Making

Today most doctors rely on their personal evaluation or objective response criteria (OR) of a man to know when docetaxel chemotherapy has stopped working. The earlier this determination can be accurately made the quicker an alternative treatment can e put into place. Personal evaluations without any validated tools are unreliable and never consistent among doctors. [...]