Interleukin 32 alpha (IL-32α) is an 18 kDa cytokine with 131 amino acid residues and one of the IL-2 splice variants. IL-32α is primarily secreted from inflammatory cells, such as NK cells, T-cells, peripheral blood mononuclear cells (PBMCs), and monocytes. IL-32 alpha is a proinflammatory cytokine regulating IL-6 by interaction with protein kinase C (PKC) . It also interacts with paxillin, integrin, and focal adhesion kinase 1 (FAK 1) .