Mutations in BRAF and NRAS that lead to constitutive activation of MAP kinase signalling have been found at high frequencies in many melanomas. However, they have not been found in the uveal melanomas and blue nevi subtypes of melanoma. This paper shows that these subtypes instead show frequent activating mutations in the G protein α-subunit GNAQ, also leading to the activation of the MAP kinase pathway.
- Catherine D. Van Raamsdonk
- Vladimir Bezrookove
- Boris C. Bastian