PTPRJ and non-Hodgkin lymphoma: We also used gene expression profiling (GEP) data from NHL patients with known LOH status for PTPRJ [7], to detect genes that are significantly deregulated by LOH of PTPRJ. Using this approach, we identified differentially expressed genes between cases with and without LOH of PTPRJ. This result indicates that LOH of PTPRJ could have an effect on the expression pattern of some genes (Figure 3A), suggesting that some pathways might be differentially enriched between the two categories.