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Journal of Cancer Research and Clinical Oncology

Erschienen in:

01.03.2014 | Original Paper

Different treatment orders achieved similar clinical results: a retrospective study for retreatment of epidermal growth factor receptor tyrosine kinase inhibitors in 120 patients with non-small-cell lung cancer

verfasst von: Chuanhao Tang, Hongjun Gao, Xiaoyan Li, Yi Liu, Jianjie Li, Haifeng Qin, Weixia Wang, Lili Qu, Juan An, Shaoxing Yang, Xiaoqing Liu

Erschienen in: Journal of Cancer Research and Clinical Oncology | Ausgabe 3/2014

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Abstract

Background

It was reported the retreatment of epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKIs) may bring benefit to non-small-cell lung cancer (NSCLC) patients who benefited previously. Nevertheless, the treatment order in most of the prior literature was gefitinib (G) to erlotinib (E), and little was known about whether other treatment order may also bring benefit to the patients.

Methods

One hundred and twenty NSCLC patients who received EGFR-TKIs treatment twice were enrolled in this study. The safety and effectiveness of the second EGFR-TKIs administration, as well as the influencing factors that contribute to this process, were analyzed retrospectively.

Results

Forty-nine (40.8 %) patients were retreated with same kind of EGFR-TKIs: 30 (25 %) were G and 19 (15.8 %) were E. Seventy-one (59.2 %) patients switched to another kind: 55 (45.8 %) were G to E and 16 (13.4 %) were the reverse. Notably, no differences in clinical benefits were found among the four different treatment orders. For the second administration, the adverse effects of all patients were generally classified as grade I–II and the 1-year survival rate reached 32.5 %. The objective response rate, disease control rate, median progression-free survival (PFS), and overall survival was 10.0 % (12/120), 52.5 % (63/120), 2.3 (95 % CI 1.5–3.0) months and 8.0 (95 % CI 7.0–8.5) months, respectively. The univariate and multivariate analyses revealed that those patients who benefited from prior EGFR-TKIs were easier to get benefit from the second administration, and the strongest beneficial indicators of the retreatment were PFS of the initial EGFR-TKIs (≥6 months, HR 0.611, 95 % CI 0.354–0.901, P = 0.0076) and time interval between the two EGFR-TKIs treatment (≥4 months, HR 0.529, 95 % CI 0.328–0.852, P = 0.0088).

Conclusion

Those patients who benefited from prior EGFR-TKIs were easier to get benefit from the second administration. A time interval of ≥4 months may improve the retreatment, but differences in clinical benefit were not found among different treatment orders. If the retrospective result could be validated further in the future, it would be helpful for rational administration of EGFR-TKIs.

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Titel: Different treatment orders achieved similar clinical results: a retrospective study for retreatment of epidermal growth factor receptor tyrosine kinase inhibitors in 120 patients with non-small-cell lung cancer
verfasst von: Chuanhao Tang
Hongjun Gao
Xiaoyan Li
Yi Liu
Jianjie Li
Haifeng Qin
Weixia Wang
Lili Qu
Juan An
Shaoxing Yang
Xiaoqing Liu
Publikationsdatum: 01.03.2014
Verlag: Springer Berlin Heidelberg
Erschienen in: Journal of Cancer Research and Clinical Oncology / Ausgabe 3/2014
Print ISSN: 0171-5216
Elektronische ISSN: 1432-1335
DOI: https://doi.org/10.1007/s00432-014-1582-x

Springer Medizin

Different treatment orders achieved similar clinical results: a retrospective study for retreatment of epidermal growth factor receptor tyrosine kinase inhibitors in 120 patients with non-small-cell lung cancer