Analysis of Correlation between Rab1A Expression and its Prognosis in Cancers: a Meta-Analysis

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BACKGROUND: Rab1A not only regulates eukaryotic secretion, autophagy and intracellular traffic, but also extensively participates in the development of cancer. Thus, we collected data to investigate the clinical value of Rab1A in cancers. METHODS: English web database was searched for appropriate studies. The role of Rab1A in cancer patients was evaluated by combining hazard ratios and odds ratios. RESULTS: There were 15 studies in 14 articles, including 1,791 cancer patients. The results showed that upregulated Rab1A led to poor prognosis in cancer patients (pooled HR = 2.545, 95% CI = 1.924 - 3.367, p < 0.001). Notably, a high level of Rab1A was associated with a poorer prognosis than patients with a low level of Rab1A in digestive system cancer (pooled HR = 2.484, 95% CI = 1.796 - 3.437, p < 0.001). In order to explore the possible carcinogenic mechanism, we further analyzed and confirmed that high expression of Rab1A was associated with worse histologic grade, deeper tumor invasion, higher TNM stage, positive LN metastasis, positive neural invasion, positive vascular invasion, and larger tumor size (p < 0.05). CONCLUSIONS: Rab1A overexpression was associated with poor prognosis and adverse clinicopathological parameters in cancer patients and had the potential to be a target for future cancer therapy.

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