Efficacy and Safety of Pyrotinib in Patients With HER2 Mutation Advanced Non-Small Cell Lung Cancer

Inclusion Criteria:

* Aged ≥18 and ≤80 years.
* ECOG performance status of 0 to 1.
* Life expectancy of more than 12 weeks.
* At least one measurable lesion exists.(RECIST 1.1)
* Histologically or cytologic confirmed HER2 positive advanced Non-small cell lung cancer who failed prior therapies.
* Required laboratory values including following parameters:

ANC: ≥ 1.5 x 10\^9/L, Platelet count: ≥ 80 x 10\^9/L, Hemoglobin: ≥ 90 g/L, Total bilirubin: ≤ 1.5 x upper limit of normal, ULN, ALT and AST: ≤ 1.5 x ULN, BUN and creatine clearance rate: ≥ 50 mL/min LVEF: ≥ 50% QTcF: \< 470 ms

* Signed informed consent.

Exclusion Criteria:

* Subjects with third space fluid that can not be controled by drainage or other methods.
* Subjects that are unable to swallow tablets, or dysfunction of gastrointestinal absorption.
* Less than 4 weeks from the last radiotherapy,chemotherapy,target therapy
* Subjects with uncontrolled hypokalemia and hypomagnesemia before study entry.
* Subjects who can not interrupt the using of the drugs that may cause QT prolongation during study.
* Receiving any other antitumor therapy.
* Known history of hypersensitivity to pyrotinib or any of it components. Ongoing infection (determined by investigator).
* History of immunodeficiency, including HIV-positive, suffering from other acquired, congenital immunodeficiency disease, or history of organ transplantation.
* Subjects had any heart disease, including: (1) angina; (2) requiring medication or clinically significant arrhythmia; (3) myocardial infarction; (4) heart failure; (5) Any heart diseases judged by investigator as unsuitable to participate in the trial.
* Female patients who are pregnancy, lactation or women who are of childbearing potential tested positive in baseline pregnancy test.
* Known history of neurological or psychiatric disease, including epilepsy or dementia.