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Background  N‐cadherin is an important molecular in epithelial‐mesenchymal transition ( EMT ) and has been reported to be associated with aggressive behaviours of tumours. However, prognostic value of N‐cadherin in solid malignancies remains controversially.    Materials and Methods  The Pubmed/ MELINE  and  EMBASE  databases were used for a comprehensive literature searching. Pooled risk ratio ( RR ) and hazard ratio ( HR ) with their corresponding 95% confidence intervals ( CI s) were employed to quantify the prognostic role.    Results  Involving 36 studies with 5705 patients were performed to investigate relationships between N‐cadherin upregulation and clinicopathological features, survival. Results suggested upregulated N‐cadherin was associated with lymph node metastasis (RR = 1.16, 95%  CI  [1.00, 1.35]), higher histological grade ( RR  = 1.36, 95% CI  [1.14, 1.62]), angiolymphatic invasion ( RR  = 1.19, 95%  CI  [1.06, 1.34]) and advanced clinical stage ( RR  = 1.32, 95%  CI  [1.06, 1.64]), while upregulated N‐cadherin was apt to be associated with distant metastasis ( RR  = 1.43, 95%  CI  [0.99, 2.05]). Moreover, N‐cadherin was correlated with poor prognosis of 3‐year survival ( HR  = 1.78, 95%  CI  [1.51, 2.10]), 5‐year survival ( HR  = 1.57, 95%  CI  [1.17, 2.10]) and overall survival ( OS ) ( HR  = 1.32, 95%  CI  [1.20, 1.44]). Subgroup analyses according to cancer types were also conducted for applying these conclusions to some tumours more properly. No publication bias was found except subgroup analysis of distant metastasis ( P  = .652 for Begg's test and 0.023 for Egger's test).    Conclusions  Taken together, upregulation of N‐cadherin is associated with more aggressive behaviours of epithelial‐derived solid malignancies and can be regarded as a predictor of poor survival.

Upregulated N‐cadherin expression is associated with poor prognosis in epithelial‐derived solid tumours: A meta‐analysis