CareDx Inc. announced the availability of XenoSure™ donor-derived cell-free DNA (dd-cfDNA) and XenoMap™ gene-expression profiling for investigational use in xenotransplantation research and post-xenotransplant clinical monitoring. Surgeons from the University of Maryland School of Medicine (UMSOM) recently used XenoSure and XenoMap, two complementary, non-invasive CareDx surveillance solutions, experimentally, for multimodal assessment of organ graft health in the world's first pig-to-human heart xenotransplant. XenoSure is used to detect graft injury and XenoMap to assess immune quiescence.