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Chunxia Su
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FP14 - Targeted Therapy - Clinically Focused (ID 252)
- Event: WCLC 2020
- Type: Posters (Featured)
- Track: Targeted Therapy - Clinically Focused
- Presentations: 1
- Moderators:
- Coordinates: 1/28/2021, 00:00 - 00:00, ePoster Hall
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FP14.11 - Icotinib versus Chemotherapy as Adjuvant Treatment for Stage II–IIIA EGFR-Mutant NSCLC (EVIDENCE): A Randomized, Open-Label, Phase 3 Study (ID 3605)
00:00 - 00:00 | Author(s): Chunxia Su
- Abstract
Introduction
Recent studies have shown significant benefits of EGFR tyrosine kinase inhibitors in the adjuvant setting for patients with EGFR-mutant stage IB–IIIA resected NSCLC. This study aimed to compare the efficacy and safety of icotinib with standard chemotherapy in adjuvant setting in patients with EGFR mutant stage II-IIIA NSCLC.
Methods
In this randomized, open-label, phase 3 study, eligible patients aged 18-70 years who had completely resected (R0), stage II-IIIA EGFR-mutant NSCLC (in-frame deletion in exon 19 or Leu858Arg point mutation in exon 21) were randomly assigned, in a 1:1 ratio, to receive either adjuvant icotinib (125 mg thrice daily administered orally for 2 years) or four-cycle chemotherapy (cisplatin plus vinorelbine, or cisplatin plus pemetrexed for non-squamous carcinoma). Patients were stratified by clinical stage (II vs IIIA), EGFR mutation type (exon 19 vs 21), and resection methods (lobectomy vs pneumonectomy). The primary endpoint was disease-free survival (DFS). Secondary endpoints included overall survival (OS) and safety.
Results
A total of 365 patients were screened, and 322 patients (161 for each arm) were enrolled from 29 centers across China between June 2015 and July 2019. Thirty-nine patients had major protocol violations and were excluded, leaving 283 patients in full analysis set (151 in icotinib arm and 132 in chemotherapy arm, respectively). 53% and 47% of patients had an EGFR mutation of 19 Del and 21 L858R, respectively. At the data cutoff (March 31, 2020) for the pre-specified interim analysis, 98 out of 196 (50%) events were recorded with a median follow-up of 24.9 months (95% CI, 22.1 to 28.8). In full analysis population, the median DFS (mDFS) was 47.0 months (95% CI, 36.44 to not reached) in the icotinib group and 22.1 months (95% CI, 16.8 to 30.4) in the chemotherapy group (stratified hazard ratio=0.36; 95% CI, 0.24 to 0.55; P < 0.0001). Analyses of DFS based on stratification criteria and vital demographic and prognostic factors showed consistent benefits of icotinib treatment across subgroups. The 3-year DFS was 63.9% in the icotinib group and 32.5% in the chemotherapy group. It is immature to perform OS analysis with14 (9.3%) patients in the icotinib group and 14 (10.6%) patients in the chemotherapy group died, respectively. Adverse events of grade 3 or 4 were observed in 10.9% of the patients in the icotinib group and 61.2% in the chemotherapy group. Treatment-related serious adverse events occurred in 2 (1.3%) patients in the icotinib group and 19 (13.7%) patients in the chemotherapy group. No interstitial pneumonia or treatment-related death was observed in each group.
Conclusion
Adjuvant icotinib significantly improved DFS in patients with EGFR mutant stage II-IIIA NSCLC compared with standard chemotherapy and demonstrated a better tolerability profile. Icotinib can provide a new treatment option for stage II-IIIA NSCLC patients with activating EGFR mutation.
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JICC01 - Joint IASLC-CAALC-CSCO Session: The Truth and Myth of Oral Anti-VEGFR Inhibitors for Advance NSCLC (ID 276)
- Event: WCLC 2020
- Type: Workshop
- Track: N.A.
- Presentations: 1
- Moderators:
- Coordinates: 1/28/2021, 07:00 - 09:00, Scientific Program Auditorium
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JICC01.11 - Icotinib versus Chemotherapy as Adjuvant Treatment for Stage II–IIIA EGFR-Mutant NSCLC (EVIDENCE): A Randomized, Open-Label, Phase 3 Study (ID 4275)
07:00 - 09:00 | Author(s): Chunxia Su
- Abstract
- Presentation
Introduction
Recent studies have shown significant benefits of EGFR tyrosine kinase inhibitors in the adjuvant setting for patients with EGFR-mutant stage IB–IIIA resected NSCLC. This study aimed to compare the efficacy and safety of icotinib with standard chemotherapy in adjuvant setting in patients with EGFR mutant stage II-IIIA NSCLC. Methods
In this randomized, open-label, phase 3 study, eligible patients aged 18-70 years who had completely resected (R0), stage II-IIIA EGFR-mutant NSCLC (in-frame deletion in exon 19 or Leu858Arg point mutation in exon 21) were randomly assigned, in a 1:1 ratio, to receive either adjuvant icotinib (125 mg thrice daily administered orally for 2 years) or four-cycle chemotherapy (cisplatin plus vinorelbine, or cisplatin plus pemetrexed for non-squamous carcinoma). Patients were stratified by clinical stage (II vs IIIA), EGFR mutation type (exon 19 vs 21), and resection methods (lobectomy vs pneumonectomy). The primary endpoint was disease-free survival (DFS). Secondary endpoints included overall survival (OS) and safety. Results
A total of 365 patients were screened, and 322 patients (161 for each arm) were enrolled from 29 centers across China between June 2015 and July 2019. Thirty-nine patients had major protocol violations and were excluded, leaving 283 patients in full analysis set (151 in icotinib arm and 132 in chemotherapy arm, respectively). 53% and 47% of patients had an EGFR mutation of 19 Del and 21 L858R, respectively. At the data cutoff (March 31, 2020) for the pre-specified interim analysis, 98 out of 196 (50%) events were recorded with a median follow-up of 24.9 months (95% CI, 22.1 to 28.8). In full analysis population, the median DFS (mDFS) was 47.0 months (95% CI, 36.44 to not reached) in the icotinib group and 22.1 months (95% CI, 16.8 to 30.4) in the chemotherapy group (stratified hazard ratio=0.36; 95% CI, 0.24 to 0.55; P < 0.0001). Analyses of DFS based on stratification criteria and vital demographic and prognostic factors showed consistent benefits of icotinib treatment across subgroups. The 3-year DFS was 63.9% in the icotinib group and 32.5% in the chemotherapy group. It is immature to perform OS analysis with14 (9.3%) patients in the icotinib group and 14 (10.6%) patients in the chemotherapy group died, respectively. Adverse events of grade 3 or 4 were observed in 10.9% of the patients in the icotinib group and 61.2% in the chemotherapy group. Treatment-related serious adverse events occurred in 2 (1.3%) patients in the icotinib group and 19 (13.7%) patients in the chemotherapy group. No interstitial pneumonia or treatment-related death was observed in each group. Conclusion
Adjuvant icotinib significantly improved DFS in patients with EGFR mutant stage II-IIIA NSCLC compared with standard chemotherapy and demonstrated a better tolerability profile. Icotinib can provide a new treatment option for stage II-IIIA NSCLC patients with activating EGFR mutation.Only Members that have purchased this event or have registered via an access code will be able to view this content. To view this presentation, please login, select "Add to Cart" and proceed to checkout. If you would like to become a member of IASLC, please click here.
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P76 - Targeted Therapy - Clinically Focused - EGFR (ID 253)
- Event: WCLC 2020
- Type: Posters
- Track: Targeted Therapy - Clinically Focused
- Presentations: 1
- Moderators:
- Coordinates: 1/28/2021, 00:00 - 00:00, ePoster Hall
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P76.07 - Metformin Enhances the Efficacy of EGFR-TKIs in Advanced Non-Small Cell Lung Cancer Patients With Type 2 Diabetes Mellitus (ID 897)
00:00 - 00:00 | Author(s): Chunxia Su
- Abstract
Introduction
Lung cancer remains the leading cause of cancer-related mortality around the world. Despite epidermal growth factor receptor (EGFR)-tyrosine kinase inhibitors (TKIs) therapy have shown remarkable clinical efficacy in non-small cell lung cancer (NSCLC) patients, resistance is almost inevitable and is still a major obstacle. Studies have suggested that the prolonged use of metformin, a common oral anti-diabetes agent, also an IGF-1R inhibitor, is associated with survival benefits among NSCLC Type 2 diabetes mellitus (T2DM) patients. However, the clinical efficacy of metformin and EGFR-TKIs in combination, especially third-generation TKIs, on NSCLC patients with T790M mutation has not been well validated. Therefore, we retrospectively reviewed the effect of metformin use on the clinical efficacy of EGFR-TKIs in NSCLC patients with T2DM, and we also carried out in vitro experiment to demonstrate the effects of metformin in EGFR-TKI resistant cell lines in aspect of proliferation and apoptosis.
Methods
We retrospectively reviewed clinicopathological characteristics and response of NSCLC patients with type 2 diabetes mellitus (T2DM) who received EGFR-TKIs treatment. Therapeutic outcome including objective response rate (ORR), median progression-free survival (PFS) and overall survival (OS) of first-line EGFR-TKIs and second-line osimertinib were compare between patients received metformin and other anti-diabetes drugs. In addition, the effect of metformin on gefitinib-resistant cell line PC9R and osimertinib-resistant cell line PC9R/OR was examined in vitro using Cell Counting Kit-8, and apoptosis analysis, the IC 50, apoptosis rate and combination index (CI) was calculated.
Results
In fist-line EGFR-TKIs treatment, ORR in metformin use group was significantly higher (85.7% vs. 47.4%, p=0.001). The PFS1 and OS1 in metformin use group were significantly longer (21.6 months vs. 9.2 months, p =0.000; 48.4 months vs. 36.6 months, p =0.049). Further analysis revealed that metformin obviously prolonged the median PFS2 of osimertinib treatment among patients who progressed to prior line EGFR-TKIs with T790M. In vitro analysis, metformin showed synergistic interaction both with gefitinib in PC9R (CI=0.77) and with osimertinib in PC9R/OR (CI=0.77) in proliferation inhibition analysis. Metformin can also augment apoptosis effect of these TKI-resistant cells to EGFR-TKIs in vitro (p<0.05).
Conclusion
The results of our study suggest metformin use could be beneficial to NSCLC patients with T2DM treated with either first-line EGFR-TKIs or second-line osimertinib treatment.
