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A Phase II, Single-Arm Study of Apatinib and Oral Etoposide in Heavily Pre-Treated Metastatic Breast Cancer.


ABSTRACT:

Introduction

We performed this clinical trial to evaluate the efficacy and safety of apatinib and oral etoposide in patients with HER2-negative locally advanced or metastatic breast cancer (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 and 425 mg in patients with 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 objective response rate (ORR). Secondary end points included progression-free survival (PFS), 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 6.9 months [95% confidence interval (CI) 6.0-7.9], and 6.9 months (95% CI 5.3-8.6) and 6.6 months (95% CI 1.4-11.7) for patients with apatinib 425 and 500mg once daily, respectively. The ORR was 35.5% (11/31). The DCR was 87.1% (27/31). The median OS was 20.4 months (95% CI 11.4-29.3). 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 AEs were hypertension (12/31, 38.7%), fatigue (3/31, 9.7%), thrombocytopenia (3/31, 9.7%).

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.

Clinical trial registration

https://clinicaltrials.gov/, identifier NCT03535961.

SUBMITTER: Hu N 

PROVIDER: S-EPMC7917213 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Publications

A Phase II, Single-Arm Study of Apatinib and Oral Etoposide in Heavily Pre-Treated Metastatic Breast Cancer.

Hu Nanlin N   Zhu Anjie A   Si Yiran Y   Yue Jian J   Wang Xue X   Wang Jiayu J   Ma Fei F   Xu Binghe B   Yuan Peng P  

Frontiers in oncology 20210215


<h4>Introduction</h4>We performed this clinical trial to evaluate the efficacy and safety of apatinib and oral etoposide in patients with HER2-negative locally advanced or metastatic breast cancer (MBC).<h4>Methods</h4>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 and 425 mg in patients with ECOG scores of 0-1 and 2, respectively. The etoposide capsules were given a  ...[more]

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