Furthermore, CCR4 is found on various immune cell types, including T-cells, Th2, Th17, natural killer cells, macrophages, monocytes, and neoplastic T-cells, including those in adult T-cell leukemia/lymphoma, peripheral T-cell lymphoma, and CTCL [58]. Here, CCR4 is linked to primary cutaneous T-cell non-Hodgkin lymphoma.