<p>The invention is based on the discovery that the human protein referred to herein as INSP076 protein is a member of the cytokine receptor-type I family (hematopoietin receptor superfamily). Preferably, INSP076 functions as an IL-9 receptor or an IL-9 receptor-like protein. The INSP076 protein does not possess a transmembrane domain and accordingly the INSP076 protein is a potential soluble receptor. It is believed that the INSP076 protein may function as an IL-9 antagonist.</p>
