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Research
Peng Yuan
Chinese Academy of Medical Sciences and Peking Union Medical College
Corresponding Author
License:
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Background:
The effectiveness of antiangiogenic drugs in metastatic breast cancer(MBC) is still unclear. Apatinib is a small tyrosine kinase inhibitor that inhibits vascular endothelial growth factor receptor 2 (VEGFR-2). We performed this clinical trial to evaluate the efficacy and safety of apatinib and oral etoposide in patients with HER2-negative locally advanced or MBC.
Methods:
Patients with HER2-negative MBC previously treated with anthracycline and taxanes and failed ≥ 1 prior chemotherapy regimens were recruited. The starting dose of apatinib was 500 mg and 425 mg in patients with Eastern Cooperative Oncology Group (ECOG) scores of 0–1 and 2, respectively. The etoposide capsules were given at 50 mg/m2 on days 1 to 10 for 21 days. The primary end point was progression-free survival (PFS) which is assessed every 6 weeks (RECIST v1.1). Secondary end points included objective response rate (ORR), disease control rate (DCR), overall survival (OS), and safety.
Results:
Thirty-one eligible patients were enrolled. The median follow-up time was 11 months. The median PFS for all patients was 6.93 months (95% confidence interval (CI), 5.97–7.90), and 6.93 months(95% CI 5.27–8.60) and 6.56 months (95% CI 1.41–11.73) for patients with apatinib 425 mg and 500 mg once daily, respectively. The ORR was 35.5% (11/31). The DCR was 87.1% (27/31). The median OS was 20.37 months (95% CI, 11.39–29.34). The median PFS of patients who had hypertension and proteinuria was longer than that for those without hypertension and proteinuria. The most common grade 3/4 treatment-related adverse events(AE) were hypertension (12/31, 38.71%), fatigue (3/31, 9.68%), thrombocytopenia (3/31, 9.68%).
Conclusion:
Apatinib combined with etoposide capsules is effective and tolerable in heavily pretreated, metastatic HER2-negative breast cancer patients. A lower apatinib dose provide equivalent efficacy and reduced toxicity.
Keywords
apatinib, oral etoposide, HER2-negative breast cancer,angiogenesis
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A new preprint design is coming!
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This is a preprint, a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Research
Peng Yuan
Chinese Academy of Medical Sciences and Peking Union Medical College
Corresponding Author
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
History
CURRENT STATUS: Posted
Version 1
Posted 29 Apr, 2020
No community comments so far
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Background:
The effectiveness of antiangiogenic drugs in metastatic breast cancer(MBC) is still unclear. Apatinib is a small tyrosine kinase inhibitor that inhibits vascular endothelial growth factor receptor 2 (VEGFR-2). We performed this clinical trial to evaluate the efficacy and safety of apatinib and oral etoposide in patients with HER2-negative locally advanced or MBC.
Methods:
Patients with HER2-negative MBC previously treated with anthracycline and taxanes and failed ≥ 1 prior chemotherapy regimens were recruited. The starting dose of apatinib was 500 mg and 425 mg in patients with Eastern Cooperative Oncology Group (ECOG) scores of 0–1 and 2, respectively. The etoposide capsules were given at 50 mg/m2 on days 1 to 10 for 21 days. The primary end point was progression-free survival (PFS) which is assessed every 6 weeks (RECIST v1.1). Secondary end points included objective response rate (ORR), disease control rate (DCR), overall survival (OS), and safety.
Results:
Thirty-one eligible patients were enrolled. The median follow-up time was 11 months. The median PFS for all patients was 6.93 months (95% confidence interval (CI), 5.97–7.90), and 6.93 months(95% CI 5.27–8.60) and 6.56 months (95% CI 1.41–11.73) for patients with apatinib 425 mg and 500 mg once daily, respectively. The ORR was 35.5% (11/31). The DCR was 87.1% (27/31). The median OS was 20.37 months (95% CI, 11.39–29.34). The median PFS of patients who had hypertension and proteinuria was longer than that for those without hypertension and proteinuria. The most common grade 3/4 treatment-related adverse events(AE) were hypertension (12/31, 38.71%), fatigue (3/31, 9.68%), thrombocytopenia (3/31, 9.68%).
Conclusion:
Apatinib combined with etoposide capsules is effective and tolerable in heavily pretreated, metastatic HER2-negative breast cancer patients. A lower apatinib dose provide equivalent efficacy and reduced toxicity.
Figure 1
Figure 2
Figure 3
Figure 4
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