Additional Relevant Details "The majority of mesothelioma tumors express high levels of FGF-2, so our FGF ligand trap represents a rational therapeutic approach, and patients currently have limited treatment options. If we see similar results once we have full, mature data for Arm C, we will seek to regain rights for FP-1039 in the U.S., Canada and the E.U. from GSK, as mesothelioma could represent a potentially attractive market opportunity for Five Prime."