Peripheral T-cell lymphoma project [8] on the other hand highlighted the outcome differences between PTCL, NOS and ALCL, ALK negative in which 5-year FFS (36% versus 20%) and OS (49% versus 32%) were superior in ALCL, ALK negative compared to PTCL, NOS. The gene discussed is ALK; the disease is mature T-cell and NK-cell non-Hodgkin lymphoma.