Figure 1.

The expression of EPHB6, EFNB2, and EFNB3 predicts disease outcome of NB. Survival probabilities of groups of NB with low- or high-level expression of TrkA (A), EPHB6 (B), EFNB2 (C), or EFNB3 (D) were estimated by the method of Kaplan-Meier. The median value of each variable was used as a cut-off to define high- and low-expression subgroups. Five-year survival and 95% confidence interval (CI) also were calculated for each subgroup. The log-rank test was used to compare survival probabilities of the two groups.