Exploring the Mechanism of Primary Resistance to Third-generation EGFR-TKIs as First-line
Lung cancer is currently the world's largest malignant tumor for cancer-related deaths with non-small cell lung cancer (NSCLC) accounting for 80%-85%. Epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKIs), especially the 3rd-generation EGFR-TKIs have demonstrated strong antitumor effects in EGFR-posit
| Condition(s) | Lung Cancer, Non-small Cell, EGFR Gene Mutation, EGFR-TKI Resistant Mutation, Primary Resistance, Circulating Tumor DNA |
|---|---|
| Status | Recruiting |
| Study type | Observational |
| Summary | Lung cancer is currently the world's largest malignant tumor for cancer-related deaths with non-small cell lung cancer (NSCLC) accounting for 80%-85%. Epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKIs), especially the 3rd-generation EGFR-TKIs have demonstrated strong antitumor effects in EGFR-positive patients. However, approximately 20% of EGFR-positive were primarily resistant to 3rd generation EGFR-TKIs, i.e., clinical non-response or disease progression in the short term. This study aimed to clarify the molecular indicators that predict the benefits of 3-rd EGFR-TKIs as first-line therapy in NSCLCpatients with EGFR-positive. Further, to clarify their primary drug resistance mechanisms, which is of great significance for the treatment and clinical decision-making of |
| Who can participate | Inclusion Criteria: 1. Age \>18 years; 2. Histological or cytopathological diagnosed NSCLC; 3. According to the American Joint Committee on Cancer (AJCC) eighth edition of the Lung Cancer Staging Manual, the clinical stage is unresectable IIIB-IV or recurrence and metastasis after surgery; 4. At least one measurable lesion can be evaluated according to the Response Evaluation Criteria In Solid Tumours v1.1 (RECIST1.1) criteria; 5. Positive EGFR mutation confirmed by tissue or cytology (pleural fluid, cerebrospinal fluid, etc.); 6. Use of third-generation EGFR-TKIs approved by the NMPA for NSCLC as first-line therapy; 7. Cooperate with the provision of clinicopathological data, imaging data, sample collection, and follow-up required for the research process, and agree to use the test data f |
| Ages | 18 Years |
| Sex | All |
| Lead sponsor | Second Xiangya Hospital of Central South University |
| Locations | Changsha, Hunan, China |
| Start date | 2021-09-28 |
| NCT ID | NCT05598528 |
| Official listing | https://clinicaltrials.gov/study/NCT05598528 |