RT Journal Article SR Electronic T1 Deciphering the Complexity of MEK Mutations in the Clinic JF Cancer Research JO Cancer Res FD American Association for Cancer Research SP 4042 OP 4043 DO 10.1158/0008-5472.CAN-20-2611 VO 80 IS 19 A1 Whitehead, Christopher E. A1 Sebolt-Leopold, Judith S. YR 2020 UL http://cancerres.aacrjournals.org/content/80/19/4042.abstract AB Significant advances in tumor sequencing have led to an explosion in our knowledge of the genetic complexity of cancer. For many cancers, the selection of a targetable alteration is not readily apparent, especially when confronted with mutational variants of unknown significance. The complex clinical landscape of MEK mutations illustrates the need for improved methods to identify those patients, independent of tumor histology, who would benefit from treatment with a MAP kinase pathway inhibitor. In this issue of Cancer Research, Hanrahan and colleagues adopt an in silico platform to attempt to distinguish benign MEK mutations from those that are functional and, therefore, most likely to be therapeutically actionable.See related article by Hanrahan et al., p. 4233