All participants in this study will receive Lorlatinib. Lorlatinib targets the abnormal ALK or ROS1 proteins in NSCLC cells. Lorlatinib has been tested in other research studies and results show that the medicine may help to control the growth of NSCLC even after it has spread to the CNS. The CNS is a term used to refer to the brain and spinal cord, including the lining of the brain and spinal cord which is called the meninges.