A Clinical Trial of Furmonertinib Combination Therapy As Neoadjuvant Treatment in Resectable EGFR-Mutated NSCLC

Inclusion Criteria: 1) EGFR mutation-positive (including 19Del and 21L858R) non-small cell lung cancer (NSCLC) confirmed by biopsy; 2) Resectable stage II-III NSCLC confirmed by chest CT, PET-CT, and/or EBUS; 3) Absence of distant metastasis (including head MRI, whole-body bone scan, PET-CT, CT of liver and adrenal glands); 4) The patient exhibits good pulmonary function and is deemed suitable for surgical intervention; 5) Aged 18 and above; 6)At least one measurable tumor lesion (with a longest diameter of 10mm or more as measured by CT); 7) The ECOG score ranges from 0 to 1; 8) Women of childbearing age must undergo a pregnancy test within 7 days prior to treatment, and the result must be negative. During the trial period and for 30 days following its conclusion, reliable contraceptive measures such as intrauterine devices, oral contraceptives, and condoms should be utilized. Additionally, men of reproductive age should use condoms for contraception during the trial period and for 30 days after its completion; 9) The other major organs (liver, kidneys, hematological system, etc.) are functioning normally. Hemoglobin is ≥9.0 g/dL (or can be maintained or exceeded through treatments such as blood transfusions); the red blood cell count is ≥2.0×10\^9/L; the absolute neutrophil count is ≥1.0×10\^9/L; the platelet count is ≥100×10\^9/L; total bilirubin levels are within the normal range; AST, ALT, and alkaline phosphatase levels are ≤2.5 times the upper limit of normal; creatinine level is ≤2.0 mg/dL; creatinine clearance rate is ≥60 ml/min; patients who have not received anticoagulant therapy should have a prothrombin time (PT) and activated partial thromboplastin time (aPTT) ≤ 1.5 times the upper limit of normal, while patients who have undergone comprehensive or intravenous anticoagulant therapy are eligible for clinical trials only if they have maintained stable anticoagulant drug dosages for at least 2 weeks and their coagulation test results fall within the target therapeutic range; 10) The patient is required to sign an informed consent form. Exclusion Criteria: 1) The patient has undergone comprehensive anti-cancer treatment for non-small cell lung cancer, including surgical intervention, local radiotherapy, cytotoxic drug therapy, and targeted drug therapy; 2) The patient had no history of any cancer other than small cell lung cancer within the 5 years prior to the trial, with the exception of in situ cervical cancer, cured basal cell carcinoma, and bladder epithelial neoplasms (including Ta and Tis); 3) The patient has any unstable systemic disease (including active infection, uncontrolled hypertension, unstable angina, recent onset of angina within the past 3 months, congestive heart failure \[≥ NYHA Class II\], myocardial infarction (within the past 6 months), severe arrhythmia, and liver, kidney or metabolic disorders requiring drug therapy); 4) The patient is a carrier of active hepatitis B, hepatitis C, or HIV; 5) Patients with severe or newly developed gastrointestinal diseases presenting diarrhea as the primary symptom; 6) The patient is receiving treatment with a P-glycoprotein inhibitor; 7) Patients with a history of or current cardiovascular malformations; 8) Patients with a history of or currently suffering from interstitial lung disease; 9) Patients who have undergone major systemic surgery or experienced severe trauma within the three months prior to the trial; 10) Those afflicted with neurological disorders or psychiatric illnesses; 11) Patients experiencing malabsorption conditions; 12) Female patients who are pregnant or lactating; 13) Other situations where researchers deem the patient unsuitable for enrollment. Withdrawal Criteria: In the following cases, the patient will withdraw from the trial: 1) The patient himself or his legal representative requests withdrawal; 2) The investigator believes that the patient\'s continued participation in the study will be harmful to their health; 3) The patient has developed a severe allergic reaction to the chemotherapy drug, such as grade 3-4 exfoliative dermatitis or anaphylaxis; 4) There is any other serious adverse reaction, and the principal investigator (PI) or a PI-designated investigator deems it necessary to suspend treatment; 5) The patient\'s compliance is very poor; 6) The patient\'s β-HCG test result suggests pregnancy; 7) During the study period, the patient develops another disease. The investigator believes that the disease will significantly affect the evaluation of the patient\'s clinical condition and it is necessary to terminate the treatment plan; 8) The patient is found to have another malignant tumor that needs to be treated; 9) The patient is lost to follow-up; 10) The patient has taken illicit drugs or other substances judged by the investigator to be likely to cause toxicity or lead to a bias in the study results; 11) The patient dies. Patients who withdraw from the trial should have the reason for withdrawal documented in both the case report form and the patient\'s medical record. Follow-up should be conducted for all patients who withdraw due to adverse events or abnormal laboratory test results, until the adverse event is resolved or stabilized, and subsequent outcomes of the adverse events should be recorded. In cases where a patient dies during the course of the trial or within 28 days after its conclusion, it is incumbent upon the investigator to notify the sponsor. The cause of death must be meticulously detailed in the serious adverse event (SAE) report form and submitted to the ethics committee within 24 hours.