“Currently approved and investigational ROS1 TKIs are important treatment options for advanced ROS1 fusion-positive cancers. However, these drugs can have key limitations. These include the inability to treat on-target resistance and brain metastases effectively, and an association with neurologic adverse events,” said Alexander Drilon, M.D., Chief, Early Drug Development Service, Memorial Sloan Kettering Cancer Center (MSK) and presenting investigator. “These preliminary data support NVL-520 as a potential best-in-class ROS1-selective inhibitor that may combine, for the first time, potent and selective targeting of diverse ROS1 fusions and secondary ROS1 resistance mutations including G2032R, brain penetrance, and the avoidance of TRK inhibition that can be dose limiting.”