Bastian: I think it adds strong genetic support for the notion that there are distinct types of melanoma. It's not just one homogenous disease entity and that we need to develop a more refined view to understand how does it arise and how do we treat it?
Narrator: Bastian helped lead studies revealing at least four types of melanomas; two linked to the sun's UV rays and two linked to gene variants.
Bastian: So, by realizing now that these are different types, one can actually analyze the role of UV light and other factors in a more refined way.
Narrator: For Science Today, I'm Larissa Branin.