Phase 2 Study of Pyrotinib in Previously Treated Patients With NSCLC Having EGFR or ERBB2 Exon 20 Insertion Mutation

This is a Phase 2, open-label study to evaluate the efficacy and the safety/tolerability of pyrotinib in previously treated NSCLC patients with EGFR exon 20 insertion mutations or HER2 exon 20 insertion mutations. Patient has had at least one prior systemic treatment for locally advanced or metastatic NSCLC.