Osimertinib and Navitoclax in Treating Patients With EGFR-Positive Previously Treated Advanced or Metastatic Non-small Cell Lung Cancer

This phase Ib trial studies the side effects and best dose of osimertinib and navitoclax when given together and to see how well they work in treating patients with previously treated epidermal growth factor receptor (EGFR)-positive non-small cell lung cancer that has spread to other places in the body (metastatic) or has not responded to previous treatment with initial EGFR kinase inhibitor. Osimertinib and navitoclax may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth.