Combination Treatment (Talazoparib Plus Avelumab) for Stage IV or Recurrent Non-Squamous Non-Small Cell Lung Cancer With STK11 Gene Mutation (A LUNG-MAP Treatment Trial)

This phase II LUNG-MAP treatment trial studies how well combination treatment (talazoparib plus avelumab) works in treating patients with non-squamous non-small cell lung cancer that has an STK11 gene mutation and has come back (recurrent) or is stage IV. Talazoparib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Immunotherapy with monoclonal antibodies, such as avelumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Immunotherapy drugs given as single therapies or in combination with chemotherapy do not appear to work as well in lung cancer cells with mutations in the STK11 gene versus those that do not have the mutation. Adding the medicine talazoparib to the immunotherapy drug avelumab may work better in treating lung cancers that have an STK11 gene mutation.