Patent ID: 8168415

Claim:
An Axl fusion protein comprising: a) a first protein comprising at least a portion of the extracellular domain of an Axl receptor tyrosine kinase (Axl RTK) that binds to an Axl ligand; and/or at least a portion of the extracellular domain of an Axl receptor tyrosine kinase (Axl RTK) that binds to a receptor selected from the group consisting of Axl, Tyro and Mer and inhibits the binding of a ligand to said receptor or inhibits dimerization, trimerization or formation of any receptor-protein complex of said receptor; and b) a second protein that is a heterologous fusion protein, wherein the second protein is fused to the first protein and is at least a portion of the extracellular domain of an Axl receptor tyrosine kinase (Axl RTK) that binds to an Axl ligand.