ALK and lymphoma: A moderately higher PTPN2 expression was observed in ALK+ ALCL cell lines (SUDHL1 and Karpas299) compared to diffuse large B‐cell lymphoma (DLBCL) cell lines (SUDHL8, FARAGE, and SUDHL4), Burkitt lymphoma (BL) cell line RAJI, and T‐cell leukemia/lymphoma cell lines (JURKAT and MJ) (Figure 1D).