Efficacy of EGFR-TKIs monotherapy versus TKI plus chemotherapy as first-line treatment in EGFR mutant lung adenocarcinoma with liver metastases.

Authors

null

Huijuan Wang

The Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China

Huijuan Wang , Mengmeng Li , Mina Zhang , Zhang guo Wei , Xiangtao Yan , Zhiyong Ma , Ruyue Xing

Organizations

The Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China, The Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospita, Zhenghzou, China, The Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospita, Zhengzhou, China, Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou, China, Department of Medical Oncology, Affiliated Cancer Hospital of Zhengzhou University/Hennan Cancer Hospital, Zhengzhou, China

Research Funding

No funding received
None

Background: Liver metastasis is one of the most reasons for the poor prognosis of patients with advanced lung cancer. Seeking for active and effective treatment measures is very important for these patients. At present, the first-line standard treatment of the advanced NSCLC with EGFR mutation is EGFR-TKIs monotherapy. However, its efficacy is poor in the advanced non-small cell lung cancer with EGFR mutation and liver metastases. The objective of this study is to evaluate the efficacy of EGFR-TKIs plus chemotherapy in patients with EGFR mutation of advanced non-small cell lung cancer with liver metastases. Methods: The clinical data of a total of 384 advanced NSCLC patients with EGFR mutation positive who were admitted to The Affiliated Cancer Hospital of Zhengzhou University/Henan Cancer Hospital from February 2017 to June 2020 were retrospectively analyzed. There were 75 patients with liver metastases. Patients were divided into two groups, and accepted EGFR-TKIs monotherapy or EGFR-TKIs plus chemotherapy, respectively. All patients treatment response were evaluated by the RECIST1.1 Response evaluation criteria in solid tumors.Progression free-survival (PFS) were also analyzed. Results: In the study, 75 patients were finally screened. There were 37 patients in the EGFR-TKIs monotherapy group and 38 patients in the TKI plus chemotherapy group. The median follow-up time was 23.0 months. At the latest follow-up date (2021-01-01), 57 patients had disease progression and 35 patients had died. Comparing with EGFR-TKIs monotherapy,the first-line PFS of EGFR-TKI plus chemotherapy group was longer, and the median PFS was 12.7 months VS 7.4 months (P = 0.018).The ORR of primary lung lesions was no significant difference between these two groups(65.8%VS 51.4% P = 0.204), and DCR (97.4% VS 94.6% P = 0.981) also had no difference between two groups(P > 0.05). ORR of liver metastases in the EGFR-TKIs plus chemotherapy group was significantly higher than EGFR-TKIs monotherapy group ORR (65.8%VS 40.5%,P = 0.028). Conclusions: In advanced NSCLC patients with EGFR mutation and liver metastases, comparing with EGFR-TKIs monotherapy, taking EGFR-TKIs plus chemotherapy as first-line treatment had longer PFS, and better efficacy on liver lesions.

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Abstract Details

Meeting

2021 ASCO Annual Meeting

Session Type

Publication Only

Session Title

Publication Only: Lung Cancer—Non-Small Cell Metastatic

Track

Lung Cancer

Sub Track

Metastatic Non–Small Cell Lung Cancer

Citation

J Clin Oncol 39, 2021 (suppl 15; abstr e21099)

DOI

10.1200/JCO.2021.39.15_suppl.e21099

Abstract #

e21099

Abstract Disclosures