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01.12.2017 | Short report | Ausgabe 1/2017 Open Access

Journal of Hematology & Oncology 1/2017

Early presence of anti-angiogenesis-related adverse events as a potential biomarker of antitumor efficacy in metastatic gastric cancer patients treated with apatinib: a cohort study

Zeitschrift:
Journal of Hematology & Oncology > Ausgabe 1/2017
Autoren:
Xinyang Liu, Shukui Qin, Zhichao Wang, Jianming Xu, Jianping Xiong, Yuxian Bai, Zhehai Wang, Yan Yang, Guoping Sun, Liwei Wang, Leizhen Zheng, Nong Xu, Ying Cheng, Weijian Guo, Hao Yu, Tianshu Liu, Pagona Lagiou, Jin Li
Wichtige Hinweise

Electronic supplementary material

The online version of this article (https://​doi.​org/​10.​1186/​s13045-017-0521-0) contains supplementary material, which is available to authorized users.
Pagona Lagiou and Jin Li shared senior authorship
A correction to this article is available online at https://​doi.​org/​10.​1186/​s13045-017-0545-5.

Abstract

Background

Reliable biomarkers of apatinib response in gastric cancer (GC) are lacking. We investigated the association between early presence of common adverse events (AEs) and clinical outcomes in metastatic GC patients.

Patients and methods

We conducted a retrospective cohort study using data on 269 apatinib-treated GC patients in two clinical trials. AEs were assessed at baseline until 28 days after the last dose of apatinib. Clinical outcomes were compared between patients with and without hypertension (HTN), proteinuria, or hand and foot syndrome (HFS) in the first 4 weeks. Time-to-event variables were assessed using Kaplan–Meier methods and Cox proportional hazard regression models. Binary endpoints were assessed using logistic regression models. Landmark analyses were performed as sensitivity analyses. Predictive model was analyzed, and risk scores were calculated to predict overall survival.

Results

Presence of AEs in the first 4 weeks was associated with prolonged median overall survival (169 vs. 103 days, log-rank p = 0.0039; adjusted hazard ratio (HR) 0.64, 95% confidence interval [CI] 0.64–0.84, p = 0.001), prolonged median progression-free survival (86.5 vs. 62 days, log-rank p = 0.0309; adjusted HR 0.69, 95% CI 0.53–0.91, p = 0.007), and increased disease control rate (54.67 vs. 32.77%; adjusted odds ratio 2.67, p < 0.001). Results remained significant in landmark analyses. The onset of any single AE or any combinations of the AEs were all statistically significantly associated with prolonged OS, except for the presence of proteinuria. An AE-based prediction model and subsequently derived scoring system showed high calibration and discrimination in predicting overall survival.

Conclusion

Presence of HTN, proteinuria, or HFS during the first cycle of apatinib treatment was a viable biomarker of antitumor efficacy in metastatic GC patients.

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