The Ventana PD-L1 assay was approved as a complementary diagnostic for bladder cancer patients being considered for treatment with the immunotherapy Imfinzi.
The companies are aiming to develop and commercialize a test to identify patients likely to respond to Loxo's cancer drug larotrectinib.
In October, Roche reported the tissue diagnostics business contributed 8 percent to diagnostics sales in the first nine months of 2016.
The agreement gives Ventana access to results from a collaboration and licensing agreement that Transgenomic made separately with the University of Melbourne.
Horizon will develop cell lines and associated derivative reference standard material for Ventana on a project-by-project basis.
The test may help identify patients most likely to respond to Roche's new metastatic urothelial cancer drug Tecentriq, the FDA said.
The non-small cell lung cancer drug now has two FDA-approved companion tests, Abbott's FISH test and Ventana's IHC test, for identifying patients most likely to benefit from treatment.
Ventana will develop an in vitro companion diagnostic assay to identify high levels of hyaluronan in metastatic pancreatic cancer patients.
The collaboration will focus initially on early-phase studies involving Astellas' FGFR inhibitor, dubbed ASP5878.
US Attorney General Jeff Sessions is considering using DNA tests to determine relatedness between adult and child migrants, the Daily Caller reports.
Bloomberg reports that Brainstorm Cell Therapeutics plans to offer a treatment it is developing under the "right to try" law for hundreds of thousands of dollars.
In Nature this week: expansion of disease-resistance genes among long-lived oak trees, and more.
In a proof-of-concept study, researchers report being able to determine age from dried bloodstains, Discover's D-brief blog reports.