BRACAnalysis CDx? Test Will Be Used to Identify Germline BRCA Mutations in Men with Metastatic Castrate-Resistant Prostate Cancer

SALT LAKE CITY, -- Myriad Genetics, Inc. (NASDAQ: MYGN), a leader in personalized medicine, today announced that it has expanded its companion diagnostic collaboration with AstraZeneca and Merck (known as MSD outside the US and Canada).

Under the expanded collaboration, the companies will use BRACAnalysis CDx^??to identify germline?BRCA?mutations in men who have metastatic castrate-resistant prostate (mCRPC) cancer and are enrolled in the Phase III?PROfound (NCT02987543)?study.? If the study is successful, Myriad intends to file a supplementary premarket approval application with U.S. Food and Drug Administration (FDA) for BRACAnalysis CDx to be used as a companion diagnostic to Lynparza^??(olaparib) for its use in this patient population. "Our companion diagnostic collaboration with AstraZeneca and Merck has led to significant advancements in precision treatment for patients with ovarian, breast cancer,? said Nicole Lambert, president, Myriad Oncology.? ?However, there is a significant unmet medical need in men with metastatic castration-resistant prostate cancer and?BRCA1/2?mutations, which is an area where the utility of PARP inhibitors is being explored.? We look forward to this exciting opportunity to potentially expand the use of BRACAnalysis CDx in this setting." The collaboration between Myriad and AstraZeneca on Lynparza began in 2007 and has resulted in multiple regulatory approvals for BRACAnalysis CDx.

• February 2019: The Japanese Ministry of Health, Labour, and Welfare approved BRACAnalysis CDx as a companion diagnostic to identify patients with germline?BRCA?mutated (BRCAm) advanced ovarian cancer who are eligible for first-line maintenance therapy with Lynparza.
• December 2018: FDA approved BRACAnalysis CDx as a companion diagnostic to identify patients with germline?BRCAm?advanced ovarian cancer in complete or partial response to first-line platinum-based chemotherapy and who are eligible for first-line maintenance treatment with Lynparza.
• March 2018:? The Japanese Ministry of Health, Labour, and Welfare approved BRACAnalysis CDx as a companion diagnostic to identify patients with germline?BRCAm?metastatic breast cancer who have been previously treated with chemotherapy and are eligible for treatment with Lynparza.
• January 2018:? FDA approved BRACAnalysis CDx as a companion diagnostic to identify patients with germline?BRCAm metastatic breast cancer who have been previously treated with chemotherapy and are eligible treatment with Lynparza.
• August 2017:? FDA approved BRACAnalysis CDx as a complementary diagnostic to identify patients with recurrent platinum-sensitive germline?BRCAm ovarian cancer who are eligible for maintenance treatment with Lynparza.
• Dec. 2014:? FDA approved BRACAnalysis CDx as a companion diagnostic to identify patients with advanced germline?BRCAm ovarian cancer who have been treated with 3 or more lines of chemotherapy and are eligible for treatment with Lynparza.

Follow Myriad on Twitter via @myriadgenetics to keep up to date with company news and updates. About Prostate Cancer According to the American Cancer Society, about 174,650 new cases of prostate cancer will be diagnosed in the United States in 2019, and there will be 42,970 new cases of mCRPC. Prostate cancer is the second leading cause of cancer death in American men. About BRACAnalysis CDx^? BRACAnalysis CDx is an in vitro diagnostic device intended for the qualitative detection and classification of variants in the protein coding regions and intron/exon boundaries of the?BRCA1?and BRCA2 genes using genomic DNA obtained from whole blood specimens collected in EDTA.? Single nucleotide variants and small insertions and deletions (indels) are identified by polymerase chain reaction (PCR) and Sanger sequencing.? Large deletions and duplications in?BRCA1?and?BRCA2?are detected using multiplex PCR. This assay is for professional use only and is to be performed only at Myriad Genetic Laboratories, a single laboratory site located at 320 Wakara Way, Salt Lake City, UT 84108.? Learn more at:?http://myriadmychoice.com/. 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 five strategic imperatives:? build upon a solid hereditary cancer foundation, growing new product volume, expanding reimbursement coverage for new products, increasing RNA kit revenue internationally and improving profitability with Elevate 2020.? 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, EndoPredict, Vectra, GeneSight, riskScore, Prolaris, ForeSight and Prequel 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. Lynparza^??is a registered trademark of AstraZeneca. 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 BRACAnalysis CDx test to identify patients with metastatic castrate-resistant prostate cancer who may benefit from treatment with Lynparza;? the importance of the BRACAnalysis CDx test for this patient population and the ability to identify patients likely to benefit from PARP inhibition therapy; and the Company's strategic directives under the caption "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; the risk that we may be unable to comply with financial operating covenants under our credit or lending agreements;? the risk that we will be unable to pay, when due, amounts due under our credit or lending agreements; 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, 2018, 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.