Study Confirms 4Kscore Accurately Predicts High-Grade Prostate Cancer

“A blood test called the 4Kscore results in accurate detection of high-grade prostate cancer. In a prospective study of 1,012 men, this test more accurately predicted the presence of high-grade disease compared with a commonly used risk calculator in men with elevated prostate-specific antigen (PSA) levels.

“The results from this study (Abstract 1) were presented by Sanoj Punnen, MD, a urologic oncologist at the University of Miami in Florida at the 2015 Genitourinary Cancers Symposium.

“In this study, men scheduled for a prostate biopsy were enrolled, regardless of their PSA level or clinical findings, at 26 centers across the United States between October 2013 and April 2014. A total of 231 (23%) high-grade prostate cancers were detected. The 4Kscore showed a higher net benefit in comparison with the PCPTRC at all threshold possibilities for high-grade disease used in clinical practice.

“The test is able to detect aggressive prostate cancer with high accuracy, Punnen told Cancer Network. ‘The area under the curve is better than any other biomarker in this area. There was a significant reduction in biopsies that could be attained if we used this test,’ he said.

“The goal of the 4Kscore is to reduce unnecessary biopsies, as the vast majority of biopsies show either no cancer or a low-grade tumor. These biopsies result in high medical costs, as well as morbidities for the patient.”


OPKO Announces Launch of 4Kscore Test for Prostate Cancer

“OPKO Health, Inc. OPK +0.10% announced the availability of the 4KscoreTM Test through its CLIA-accredited OPKO Lab in Nashville, TN…The 4KscoreTM Test will help to reduce unnecessary prostate biopsies by providing information on the risk (probability) of having high-grade prostate cancer…

“The 4Kscore™ Test measures the blood plasma levels of four different prostate-derived kallikrein proteins: Total PSA, Free PSA, Intact PSA and Human Kallikrein 2 (hK2). These biomarkers are combined with a patient’s age, Digital Rectal Exam (DRE) status (nodule / no nodule), and prior biopsy status (yes / no) using a proprietary algorithm to calculate the risk (probability) of finding a Gleason Score 7 or higher prostate cancer…The information provided by the 4Kscore TestTM can add new information to the shared decision making discussion between a Urologist and patient in determining the advisability of a prostate biopsy.”