Melanocortin agents for use in the therapeutic treatment of melanoma, tumors of the gastrointestinal tract, and thyroid carcinoma

The present invention belongs to the field of therapeutic treatments of cancer diseases, particularly solid tumors such as melanoma, cancers of the gastrointestinal tract and thyroid carcinoma. The use of a melanocortin 4 receptor antagonist offers a possible new target therapy in the treatment of cancer diseases, counteracting the possibility of recurrence.