1. A method for treating a condition associated with angiogenesis, lymphangiogenesis, vascular permeability, or tumorigenesis, comprising administering an effective amount of a peptide comprising the amino acid sequence of LRRFSTXPXXXXDINDVXNF (SEQ ID NO: 2), wherein X is any amino acid and the amino acid sequence is at least 85% identical to LRRFSTAPFAFIDINDVINF (SEQ ID NO: 1) and wherein X at position 7 is selected from M, A, and G; X at position 9 is selected from F, A, Y, and G, X at position 10 is selected from M, A, G, dA, and Nle, X at position 11 is selected from F, A, Y, G, and 4-C1Phe, and X at position 12 and position 18 are selected from Abu, G, S, A, V, T, I, L, and AllyGly.
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