CardioDx, Inc., a pioneer in the field of cardiovascular genomic diagnostics, today announced the completion of a $58 million two-tranche equity financing. The financing included Temasek, an Asia investment company based in Singapore; and existing investors Longitude Capital; Artiman Ventures; Kleiner, Perkins, Caufield & Byers; J.P. Morgan; Mohr Davidow Ventures; TPG Biotech; Intel Capital; Acadia Woods Partners; Bright Capital; the venture arm of RU-COM; Pappas Ventures; DAG Ventures; Asset Management Group; and GE Capital. All previous investors participated in the round.

Proceeds from the financing will be used to support the commercial expansion of Corus® CAD, the only clinically validated gene expression test for obstructive coronary artery disease, and to develop additional genomic diagnostics in the field of cardiovascular disease.

"This funding positions CardioDx well to capitalize on the significant opportunity to improve the diagnosis of the millions of patients who visit their physicians with symptoms suggestive of obstructive coronary artery disease each year," said David Levison, the company's President and Chief Executive Officer. "The favorable Medicare coverage decision that we received earlier this month is a significant milestone that further validates the clinical benefit of and economic rationale for Corus CAD. This additional capital will help us expand our sales force in the U.S., further broaden reimbursement coverage, and support continued investments in research and development of new products."

CardioDx recently announced that Palmetto GBA, a national contractor that administers Medicare benefits, has established coverage for the Corus CAD gene expression test for the evaluation of patients presenting with typical and atypical symptoms suggestive of coronary artery disease. With this decision, the Corus CAD gene expression test is now a covered benefit for more than 40 million Medicare enrollees in the U.S.

Studies have shown that typical and atypical presentations of stable chest pain account for up to two percent of outpatient office visits each year in the U.S., which equates to up to three million patients per year in the Corus CAD intended-use population. However, a study of nearly 400,000 patients published in The New England Journal of Medicine in 2010 reported that as many as 62 percent of stable patients who undergo elective invasive angiographic procedures are found to have no obstructive coronary artery blockage, despite broad usage of prior noninvasive imaging. The authors concluded that current modalities used to identify patients for elective invasive angiography to diagnose obstructive coronary artery disease have limitations, and that better methods are needed for patient risk stratification.

As much as $5 billion is spent on noninvasive testing, imaging and elective invasive angiography in the Corus CAD intended-use population annually in the U.S.

About Corus CAD

With a simple blood draw, Corus CAD can help primary care clinicians and cardiologists exclude obstructive coronary artery disease as the cause of a stable non-diabetic patient's symptoms. It is the first sex-specific test for obstructive coronary artery disease, accounting for critical biological differences between men and women. The test is safe and does not expose patients to radiation risks or imaging agent intolerance. Corus CAD is intended for use in stable patients presenting with typical and atypical symptoms suggestive of obstructive coronary artery disease. Corus CAD is not intended for use in patients who are diabetic, have been diagnosed with prior myocardial infarction (MI) or have had a previous revascularization procedure, or are currently taking steroids, immunosuppressive agents or chemotherapeutic agents.

The test has been clinically validated in multiple independent patient cohorts, including two prospective, multicenter U.S. trials, PREDICT and COMPASS. Additionally, a retrospective, multicenter chart review study and the prospective IMPACT trial at Vanderbilt University demonstrated that Corus CAD use yielded significant and clinically relevant changes in patient management decisions in both primary care and cardiology settings.

The Corus CAD test measures the RNA levels of 23 genes. Because blood cell RNA levels are altered when obstructive coronary artery disease is present, the Corus CAD score aids clinicians in assessing whether an individual patient's symptoms may be due to obstructive coronary artery disease.

Corus CAD is commercially available through an innovative patient sample kit that includes everything needed for blood collection and express delivery to the company's CLIA-certified Palo Alto, Calif. laboratory. Test results are delivered promptly to the clinician's office. Corus CAD is currently available in the United States.

Corus CAD has been recognized by The Wall Street Journal's Technology Innovation Awards, honored as a Gold Edison Award recipient, and named one of TIME's Top Ten Medical Breakthroughs.

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About CardioDx

CardioDx, Inc., a pioneer in the field of cardiovascular genomic diagnostics, is committed to developing clinically validated tests that empower clinicians to better tailor care to each individual patient. Strategically focused on coronary artery disease, cardiac arrhythmia and heart failure, CardioDx is poised to expand patient access and improve healthcare quality and efficiency through the commercialization of genomic technologies. For more information, please visit www.cardiodx.com.