CCR4 and mature T-cell and NK-cell non-Hodgkin lymphoma: Nakagawa et al. analyzed 51 patients with PTCL-NOS using the array comparative genomic hybridization technique, and found that patients with PTCL-NOS with genomic aberrations had a significantly higher frequency of CCR4 positivity and a worse outcome than those with PTCL-NOS without genomic aberrations [36].