CHICAGO – Attendees of the American Association for Cancer Research that stayed toward the end of the last full day of the meeting were handsomely rewarded with initial data from Grail Inc., which is still enrolling patients in its 15,000-participant Circulating Cell-Free Genome Atlas. Early results showed that by combining signals from cancer patients using cell-free DNA samples processed with whole genome sequencing, a targeted 507 gene panel assay and a whole genome bisulfite assay, it was possible to develop a test with greater than 99 percent specificity.