PTPRJ and non-Hodgkin lymphoma: In this previous study, using publically available gene expression profiling data from our cohort of NHL cases and subsequent validation by qualitative PCR (qPCR), a significant downregulation of PTPRJ expression in FL cases with LOH, indicating that the LOH-driving events targeting PTPRJ might have an effect on mechanisms regulating the expression of PTPRJ [7, 8].