A Multicenter, Open-label, Phase IIb Study to Evaluate the Efficacy and Safety of Sutetinib Maleate Capsule in Locally Advanced or Metastatic NSCLC (Non-resistant Uncommon EGFR Mutations Only, Including L861Q, G719X, and/or S768I)

Inclusion Criteria: 1. Age 18 years old and above, male or female. 2. Histopathological and/or cytopathological confirmation of locally advanced or metastatic NSCLC patients with ≤ 1 prior line of chemotherapy. 3. Confirmation that the tumor harbors a non-resistant uncommon EGFR mutation (tumor tissue biopsy), including one or more of L861Q, G719X and S768I mutations, excluding any other EGFR sensitive mutations and/or oncogenes.. 4. At least one measurable lesion. 5. ECOG score of 0, 1, or 2. 6. A minimum life expectancy of \> 3 months. 7. Adequate bone marrow reserve, hepatic, renal and coa…