Relationships of CRLF2 expression range and outcome in NCI HR. The expression of CRLF2 was partitioned into ranges, and the survival curves of each were plotted. Given the small number of very high expressing cases, patients with a ΔCt ≤ 3.0 were grouped together. Likewise, patients with a ΔCt > 9 were grouped together because there was no distinguishable difference in outcome between any of the ranges in these low expressing cases.