摘要: The MC1R gene coding for the melanocortin-1 receptor (MC1R) is highly polymorphic in humans, and inheritance of certain allelic variants this associated with a visible phenotype Caucasians: red hair fair skin. However, proving to be considerably pleiotropic, having demonstrated roles as well cancer susceptibility, inflammation, fever. This review summarizes evidence that also plays surprising role pain, pain inhibition (analgesia), anesthesia.