Method of inhibiting angiogenesis using secreted proteins

A method for treating a medical condition comprising administration to a mammalian subject a therapeutically effective amount of a composition comprising a protein having angiogenesis-affecting activity, wherein said protein comprises an amino acid sequence selected from the group consisting of:

• (a) the amino acid sequence of SEQ ID NO:2;
• (b) the amino acid sequence of SEQ ID NO:2 from amino acid 1 to amino acid 120;
• (c) the amino acid sequence of SEQ ID NO:2 from amino acid 86 to amino acid 128;
• (d) fragments of the amino acid sequence of SEQ ID NO:2, each fragment comprising the amino sequence of SEQ ID NO:2 from amino acid 86 to amino acid 128;
• and
• (e) the amino acid sequence encoded by the cDNA insert of clone AM931 deposited under accession number ATCC 98026;
• the protein being substantially free from other mammalian proteins, and wherein said subject is treated to produce an effect selected from the group consisting of inhibition of angiogenesis, inhibition of growth or proliferation of vascular endothelial cells, inhibition of tumor growth, and inhibition of angiogenesis-dependent tissue growth.