Shares of early cancer detection company Exact Sciences Corp. soared Tuesday morning on news it is acquiring two liquid biopsy screening companies, Thrive Earlier Detection Corp. and Base Genomics Ltd., for $2.56 billion and selling $869 million of common stock to institutional investors.

Liquid biopsy startup Thrive Earlier Detection Corp. has raised $257 million in a series B round led by Casdin Capital and Section 32. The funds will be used to finalize the design of its first product, Cancerseek, conduct a trial to support U.S. FDA approval and prepare for commercialization.

DUBLIN – Thrive Earlier Detection Corp. and its academic and clinical collaborators have provided a first glimpse at the utility of a liquid biopsy test as a screening tool for picking up cancers in an asymptomatic population. In an interim one-year readout of data from the prospective five-year DETECT-A study in 10,000 women, an early version of Thrive’s Cancerseek test picked up 26 cancers ahead of standard-of-care screening, while the latter modality picked up another 24 cancers that Cancerseek missed.

SANTA CLARA, Calif. – It has never been easy to get payers to reimburse in a timely and adequate fashion for novel diagnostics, making it notoriously difficult to build a business from them. But a few high-flying diagnostics companies, such as Madison, Wis.-based Exact Sciences Corp. and Redwood City, Calif.-based Guardant Health Inc., have been blazing the trail recently on how to rapidly scale up to become valuable commercial entities from origins as a research-based startup.