SALT LAKE CITY, UT USA (Press Release) - May 15, 2015 -
Additional Data Show Prolaris Changed Treatment Plans in 48 Percent of Cases
Myriad Genetics, Inc. today presented clinical data for its Prolaris test at the 2015 American Urological Association (AUA) Annual Meeting being held May 15 to 19 in New Orleans, La. The results highlighted and underscored the significant ability of the Prolaris test to help physicians improve care for men diagnosed with prostate cancer.
In this pioneering study, Myriad presented important new clinical validation data that establishes an active surveillance (AS) threshold for men with localized prostate cancer. Specifically, the AS threshold is a composite of the Prolaris test score and clinicopathologic features. In the validation data featured at AUA, the pre-defined AS threshold was evaluated in 765 conservatively managed men, and the clinical endpoint was 10-year risk of prostate cancer mortality. The results showed that at the AS threshold, the predicted 10-year survival rate of prostate cancer patients was 97 percent. Conversely, there was a three percent risk of 10-year, prostate-specific mortality. Importantly, however, there were no observed prostate cancer-specific deaths over 10 years among men whose scores fell below the AS threshold.
Additionally, a separate analysis of 4,218 patients was performed to determine what percentage of patients who were clinically tested with Prolaris would be candidates for active surveillance based on the validated AS threshold. Of this commercial cohort, 36 percent qualified for active surveillance based on their clinical features alone. However, when the Prolaris test was added to the clinical risk assessment, 60 percent of these patients fell below the AS threshold, representing a significant increase in the total number of candidates who may be eligible for active surveillance.
Table 1: Analysis of Commercial Cohort (N=4,218)
“Active surveillance is an important treatment option for men with prostate cancer. The Prolaris active surveillance threshold represents a significant change in the treatment of prostate cancer because it provides valuable mortality prognostic information at the time of diagnosis,” said Michael Brawer, M.D., vice president of Medical Affairs, Myriad Genetic Laboratories. “Men whose combined Prolaris Scores and clinicopathologic features fall below the AS threshold can have confidence that active surveillance is an appropriate option for them instead of surgery, radiation or chemotherapy.”
PROCEDE 1000 Final Analysis
In a podium presentation, Neal Shore, M.D., medical director at Carolina Urologic Research Center, presented the final results from PROCEDE 1000, the largest prospective clinical utility study to measure the impact of the Prolaris test on the treatment of men with localized prostate cancer. The analysis of 1,206 patients demonstrated that physicians changed their treatment plans in 48 percent of cases after receiving the Prolaris test results. Of these changes, 72.1 percent were reductions in treatment, and 26.9 percent were increases in treatment. “We are very impressed by these real-world data. Prolaris does what it is designed to do: help physicians determine the aggressiveness of prostate cancer and thus personalize treatment plans for their patients based upon that information,” said Dr. Shore. “Men with a high Prolaris Score, who are at high risk of disease-specific mortality or recurrence, are receiving more aggressive treatment, which should help save more lives. Meanwhile, more patients with a low Prolaris Score are receiving active surveillance, which spares them from the side effects frequently associated with more aggressive treatments.”
About Prolaris®
Prolaris is a novel 46-gene RNA-expression test that directly measures tumor cell growth characteristics for stratifying the risk of disease-specific mortality in prostate cancer patients. Prolaris provides a quantitative measure of the RNA expression levels of genes involved in the progression of tumor growth. Low gene expression is associated with a low risk of disease-specific mortality in men who may be candidates for active surveillance and high gene expression is associated with a higher risk of disease-specific mortality in patients who may benefit from additional therapy. For more information see our digital media kit at www.myriad.com/media-kit/aua15 or visit: www.prolaris.com.
About Myriad Genetics
Myriad Genetics is a leading molecular diagnostic company dedicated to making a difference in patients' lives through the discovery and commercialization of transformative tests to assess a person's risk of developing disease, guide treatment decisions, and assess risk of disease progression and recurrence. Myriad is focused on strategic initiatives to grow existing markets, diversify through the introduction of new products, including companion diagnostics, and expand internationally. For more information on how Myriad is making a difference, please visit the Company's website: www.myriad.com.
Myriad, the Myriad logo, BART, BRACAnalysis, Colaris, Colaris AP, myPath, myRisk, myRisk Hereditary Cancer, myChoice, myPlan Lung Cancer, BRACAnalysis CDx, HRD, Vectra and Prolaris are trademarks or registered trademarks of Myriad Genetics, Inc. in the United States and foreign countries.
Contact:
Ron Rogers
Executive Vice President
Corporate Communications
Myriad Genetics Inc.
801-584-3065 (office)
908-285-0248 (cell)
@rogersro (Twitter)
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