As shown in Table 1, the histologic subtypes were ALK+ALCL (n = 85, 20.5%) AITL (n = 116, 28.0%), ALK-ALCL (n = 42, 10.1%), PTCL-NOS (n = 76,18.4%), and others (n = 95, 22.9%). Here, ALK is linked to angioimmunoblastic T-cell lymphoma.