Well, I did some digging and I’m not referring to the similarly named tests from the 70s and 80s (also called Chemosensativity Assays) that measured cancer cell growth. Those have been discredited. This is different, this test measures programmed cell death, and has some very interesting results, with recent data.
In 2011 a trial compared it against molecular profiling (in this case Cervical cancer) and was found to have been more accurate in directing therapy.
See this: http://www.translational-medicine.com/content/9/1/94
Also, even though Cigna doesn’t cover the test, calling it “Investigational” because there’s not enough trial data, they do cite a number of studies and minor trials with very interesting results. They seem to insinuate that it might have merit. This is why I’m so interested in knowing more. Here’s the link to the Cigna review:
http://www.cigna.com/sites/careallies/pdf/ex223_tumor_in_vitro_chemosensitivity_assays.pdf