The present invention relates to methods and compositions for the treatment and diagnosis of pain disorders. The invention further provides methods for identifying a compound capable of treating a pain disorder. In addition, the invention provides a method for treating a subject having a pain disorder, e.g., a pain disorder characterized by aberrant 9805, 2047, 46566, 57749, 577, 20739, 57145, 1465, 1587, 2146, 2207, 32838, 336 and 52908 polypeptide activity or aberrant 9805, 2047, 46566, 57749, 577, 20739, 57145, 1465, 1587, 2146, 2207, 32838, 336 and 52908 nucleic acid expression.