Furthermore, PIM1 and, again, especially PIM2, but not PIM3 expression was increased in a panel of 8 PTCL cell lines (Figure 1C) and primary tumoral T cells from 5 Sézary Syndrome patients (Figure 1D) relative to normal T cells from 3 healthy donors. Here, PIM1 is linked to mature T-cell and NK-cell non-Hodgkin lymphoma.