New research developed a method of tracking and rating the rate melanoma spread throughout the body. Melanoma arises from genetic mutations in special cells called melanocytes. Sequencing DNA from samples of melanocytes in living melanoma patients and non cancerous cadaver origins, they determined a higher percentage of melanocytes in the melanoma patients. In their research, they stumbled across many people that had mutations related to melanoma unknowingly and many have a higher chance of further mutation (dependent on sun exposure). The way this helps people is that dermatologists can now have a method to test the melanocyte amount in the patient so they will know their risk of developing melanoma.