To look for potential chromosomal alterations responsible for deregulation of HLX (and HHEX) in ALCL cell lines we performed karyotyping (Supplementary Figure 6A) and genomic profiling (Supplementary Figure 7) of DEL, L-82, SR-786, SU-DHL-1 and SUP-M2. Here, HLX is linked to anaplastic large cell lymphoma.