The present invention relates to humanized antibodies able to inhibit tumor growth, as well as the amino and nucleic acid sequences coding for such antibodies. From one aspect, the invention relates to anti-JAM-A homogeneous humanized antibodies able to inhibit tumor growth. The invention also comprises the use of such antibodies as a drug for the preventive and/or therapeutic treatment of cancers, as well as compositions comprising such antibodies in combination with other anticancer compounds. The invention also relates to a method for the preparation of such humanized antibodies.
