As organisms adapt to their environment, adaptations that serve them in their current environment can become liabilities if that environment changes. The control of traits that are an asset in one situation and a liability by the same gene is called antagonistic pleiotropy. In the March 16, 2020, online issue of Nature Genetics, researchers reported a method to systematically identify mutations that conferred antagonistic pleiotropy – in the form of resistance to one drug, but heightened sensitivity to another – in acute myeloid leukemia (AML) cells.

The U.S. Centers for Medicare and Medicaid Services (CMS) has significantly relaxed the national restrictions on coverage of next-generation sequencing for cancer, affirming that early-stage breast and ovarian cancer patients will be covered. However, Medicare administrative contractors can cover tests that have not been reviewed by the FDA, a move that should also significantly boost utilization for makers of next-generation sequencing systems in clinical labs.