Of the 28 companies in the index, 21 firms saw their stock prices increase throughout the first half of the year, while seven firms' share prices decreased.
Under the LCD, pharmacogenomic tests are covered when medications are being considered for use that are known to have a clinically actionable gene-drug interaction.
In January a federal court unsealed a False Claims Act suit from an industry insider that alleges a Myriad subsidiary engaged in a fraudulent kickback scheme.
The approval is based on results of the PROfound trial, which included men with mutations in BRCA1/2 or ATM, and 12 other genes associated with the HRR pathway.
The agency reviewed data showing that HRD-positive patients on the olaparib/bevacizumab combination had median progression-free survival of 37.2 months.
