ALK and anaplastic large cell lymphoma: Excluding ALK + ALCL patients from the analysis, there was a statistical difference in PFS (P = 0.020) but not in OS (P = 0.100) by EBER, in OS (P = 0.003) but not in PFS (P = 0.146) by DNA1, and in both OS (P = 0.007) and PFS (P = 0.038) by DNA4.