Alflutinib Mesylate Versus Gefitinib in Patients With Locally Advanced or Metastatic Non-small Cell Lung Cancer （FLAG）

"The initial dose of AST2818 80 mg once daily can be reduced to 40 mg once daily under specific circumstances. A cycle of treatment is defined as 21 days of once daily treatment.~Number of Cycles: as long as patients are continuing to show clinical benefit, as judged by the Investigator, and in the absence of discontinuation criteria."

The initial dose of Placebo Gefitinib 250 mg once daily cannot be reduced. A cycle of treatment is defined as 21 days of once daily treatment. Number of cycles: as long as patients are continuing to show clinical benefit, as judged by the Investigator, and in the absence of discontinuation criteria.

"The initial dose of Gefitinib 250mg once daily cannot be reduced. A cycle of treatment is defined as 21 days of once daily treatment.~Number of Cycles: as long as patients are continuing to show clinical benefit, as judged by the Investigator, and in the absence of discontinuation criteria."

The initial dose of Placebo AST2818 80 mg once daily can be reduced to Placebo AST2818 40 mg once daily under specific circumstances. A cycle of treatment is defined as 21 days of once daily treatment. Number of cycles: as long as patients are continuing to show clinical benefit, as judged by the Investigator, and in the absence of discontinuation criteria.