An anti-TrkA antibody is provided that comprises:a) a variable heavy chain comprising a sequence selected from any of BXhVH1, BXhVH2, BXhVH3, BXhVH4, BXhVH5, or HuVHWOv as shown in FIG. 1a or from variants of any of said sequencesand/orb) a variable light chain comprising a sequence selected from any of BXhVL1, BXhVL2, BXhVL3, BXhVL4, BXhVL5, BXhVL6, BXhVL7 or BXhVL8 as shown in FIG. 1b, or from variants of any of said sequences. TrkA-binding derivatives are also provided. Antibodies or derivatives of the present invention are useful in a number of therapies, including pain therapy.
