Myriad's myChoice® HRD Test Identifies Patients with Ovarian Cancer Who May Benefit from Treatment with Niraparib

SALT LAKE CITY, Oct. 08, 2016 (GLOBE NEWSWIRE) -- Myriad Genetics, Inc. (NASDAQ:MYGN), a leader in molecular diagnostics and personalized medicine, today announced that its myChoice^® HRD test identified more than double the number of patients who may benefit from treatment with niraparib than were identified by germline BRCA testing alone.  The myChoice HRD test was evaluated in the NOVA study (NCT01847274) of nirarapib, an investigational oral PARP inhibitor being developed by TESARO (Nasdaq:TSRO).

Today's announcement follows publication of the NOVA study in the New England Journal of Medicine.  NOVA is a well-controlled Phase 3 trial of niraparib that enrolled 553 patients with recurrent ovarian cancer who responded to their most recent platinum-based chemotherapy. This trial was designed to assess progression free survival (PFS) in a broad population of patients who were assigned to one of two cohorts based upon germline BRCA mutation status.

"Patients with ovarian cancer who tested positive with myChoice HRD experienced a clinically meaningful improvement in PFS," said Johnathan Lancaster, M.D., Ph.D., gynecologic oncologist and chief medical officer of Myriad Genetic Laboratories.  "We estimate that myChoice HRD identifies more than double the number of patients who may benefit compared to germline BRCA testing alone." 

The NOVA results showed that in patients who were germline BRCA mutation carriers, the median PFS for patients treated with niraparib was 21.0 months compared to 5.5 months for the control group (p<0.0001; HR 0.27,95% CI, 0.173-0.410). The median PFS benefit for patients with HRD-positive tumors who were treated with niraparib was 12.9 months compared to 3.8 months for the control group (P<0.0001; HR 0.38, 95% CI, 0.243-0.586).  Additionally, the exploratory analysis showed that for patients who were determined to be HRD negative, the median PFS for patients treated with niraparib was 6.9 months compared to 3.8 months for the control group (p<0.0226; HR 0.58, 95% CI, 0.361-0.922).

The key findings are illustrated in the chart below. 
http://www.globenewswire.com/NewsRoom/AttachmentNg/e05f7572-2d8d-48c8-80b4-4a2ad412e9db

The myChoice HRD test is being developed in parallel with the clinical development of niraparib. The collaboration with TESARO began in March 2014 and includes several ongoing clinical trials in a variety of tumor types. 

About myChoice^® HRD
Myriad's myChoice HRD is the most comprehensive homologous recombination deficiency test to detect when a tumor has lost the ability to repair double-stranded DNA breaks, resulting in increased susceptibility to DNA-damaging drugs such as platinum drugs or PARP inhibitors.  The myChoice HRD score is a composite of three proprietary technologies: loss of heterozygosity, telomeric allelic imbalance and large-scale state transitions.  Positive myChoice HRD scores, reflective of DNA repair deficiencies, are prevalent in all breast cancer subtypes, ovarian and most other major cancers. In previously published data, Myriad showed that the myChoice HRD test predicted drug response to platinum therapy in certain patients with triple-negative breast and ovarian cancers. It is estimated that 1.4 million people in the United States and Europe who are diagnosed with cancers annually may be candidates for treatment with DNA-damaging agents. 

About Myriad Genetics
Myriad Genetics Inc. is a leading personalized medicine company dedicated to being a trusted advisor transforming patient lives worldwide with pioneering molecular diagnostics.  Myriad discovers and commercializes molecular diagnostic tests that: determine the risk of developing disease, accurately diagnose disease, assess the risk of disease progression, and guide treatment decisions across six major medical specialties where molecular diagnostics can significantly improve patient care and lower healthcare costs.  Myriad is focused on three strategic imperatives:  transitioning and expanding its hereditary cancer testing markets, diversifying its product portfolio through the introduction of new products and increasing the revenue contribution from international markets.  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, Myriad myRisk, myRisk Hereditary Cancer, myChoice, myPlan, BRACAnalysis CDx, Tumor BRACAnalysis CDx, myChoice HRD, Vectra, Prolaris and GeneSight are trademarks or registered trademarks of Myriad Genetics, Inc. or its wholly owned subsidiaries in the United States and foreign countries. MYGN-F, MYGN-G
            
Safe Harbor Statement
This press release contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995, including statements related to the ability of the myChoice HRD test to identify an increased number of patients with ovarian cancer who may benefit from treatment with niraparib; the Company's estimate that myChoice HRD identifies double the number of patients compared to germline BRCA testing alone;  the importance of the myChoice HRD test for this patient population; and the Company's strategic directives under the captions "About myChoice HRD," and "About Myriad Genetics."  These "forward-looking statements" are based on management's current expectations of future events and are subject to a number of risks and uncertainties that could cause actual results to differ materially and adversely from those set forth in or implied by forward-looking statements. These risks and uncertainties include, but are not limited to: the risk that sales and profit margins of our molecular diagnostic tests and pharmaceutical and clinical services may decline; risks related to our ability to transition from our existing product portfolio to our new tests, including unexpected costs and delays; risks related to decisions or changes in governmental or private insurers' reimbursement levels for our tests or our ability to obtain reimbursement for our new tests at comparable levels to our existing tests; risks related to increased competition and the development of new competing tests and services; the risk that we may be unable to develop or achieve commercial success for additional molecular diagnostic tests and pharmaceutical and clinical services in a timely manner, or at all; the risk that we may not successfully develop new markets for our molecular diagnostic tests and pharmaceutical and clinical services, including our ability to successfully generate revenue outside the United States; the risk that licenses to the technology underlying our molecular diagnostic tests and pharmaceutical and clinical services and any future tests and services are terminated or cannot be maintained on satisfactory terms; risks related to delays or other problems with operating our laboratory testing facilities and our healthcare clinic; risks related to public concern over genetic testing in general or our tests in particular; risks related to regulatory requirements or enforcement in the United States and foreign countries and changes in the structure of the healthcare system or healthcare payment systems; risks related to our ability to obtain new corporate collaborations or licenses and acquire new technologies or businesses on satisfactory terms, if at all; risks related to our ability to successfully integrate and derive benefits from any technologies or businesses that we license or acquire; risks related to our projections about our business, results of operations and financial condition; risks related to the potential market opportunity for our products and services; the risk that we or our licensors may be unable to protect or that third parties will infringe the proprietary technologies underlying our tests; the risk of patent-infringement claims or challenges to the validity of our patents or other intellectual property; risks related to changes in intellectual property laws covering our molecular diagnostic tests and pharmaceutical and clinical services and patents or enforcement in the United States and foreign countries, such as the Supreme Court decision in the lawsuit brought against us by the Association for Molecular Pathology et al; risks of new, changing and competitive technologies and regulations in the United States and internationally; and other factors discussed under the heading "Risk Factors" contained in Item 1A of our most recent Annual Report on Form 10-K for the fiscal year ended June 30, 2016, which has been filed with the Securities and Exchange Commission, as well as any updates to those risk factors filed from time to time in our Quarterly Reports on Form 10-Q or Current Reports on Form 8-K.  All information in this press release is as of the date of the release, and Myriad undertakes no duty to update this information unless required by law.

Media Contact:
Ron Rogers            
(908) 285-0248
rrogers@myriad.com

Investor Contact:
Scott Gleason
(801) 584-1143
sgleason@myriad.com