Described is a polypeptide inhibiting the transmigration of leukocytes or the growth and/or metastasis of cancer cells, a fusion protein thereof, a polynucleotide encoding the polypeptide, a vector including the polynucleotide, and a transformant transformed with the vector. Described is also a pharmaceutical composition for the prevention or treatment of inflammatory diseases, or the inhibition of the growth and/or metastasis of cancer cells including the polypeptide or a fusion protein thereof.
