TAK-779 has been used to inhibit CC chemokine ligand 5 (CCL5)– C-C chemokine receptor type 5 (CCR5) interaction in vitro in natural killer (NK) cytotoxicity assay. It has also been used as a blocker of CCR5 to study its effects and to evaluate the opening of the Panx-1 channels on peripheral blood mononuclear cells (PBMCs) isolated from human immunodeficiency virus (HIV)-infected individuals.