The FOXA1 protein is a potentially highly sensitive diagnostic marker for small cell carcinoma of the prostate and possibly other aggressive prostate cancer subtypes that are difficult to diagnose due to a loss of traditional prostatic markers, according to researchers at The University of Texas MD Anderson Cancer Center. The study, published in Histopathology, was led by Jianping Zhao, M.D., Ph.D., assistant professor of Anatomic Pathology.