Abstract
Background
Vasculogenic mimicry (VM) is the formation of vascular channels by tumor cells or tumor cell-derived, trans-differentiated cells in highly aggressive, solid tumors. However, the disease features and prognostic value of VM for overall survival of cancer patients remain controversial.
Method
To systematically investigate the roles of VM in cancer progression and its prognostic values, we performed a meta-analysis based on 36 studies (33 eligible articles) including 3609 patients. The pooled hazard ratios (HRs) with 95 % confidence intervals (95 % CIs) were used to assess the relationship between VM and overall survival in cancer patients.
Results
Vasculogenic mimicry was significantly associated with cancer differentiation, lymph node metastasis, distant metastasis, and TNM stage. The prognostic value of VM was significant in overall survival (HR 2.16; 95 % CI 1.98–2.38; P < 0.001). Analyses stratified by confounders, such as cancer type, ethnicity, VM detection methods, sample size, and Newcastle–Ottawa quality score, found similar significant results.
Conclusions
The presence of VM predicts poorer survival outcomes in cancer patients.
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