DLL4 and non-small cell lung carcinoma: In the articles «Evaluation of the correlation of vasculogenic mimicry, Notch4, DLL4, and KAI1/CD82 in the prediction of metastasis and prognosis in non-small cell lung cancer», «Expressions of KAI1 and E-cadherin in non-small cell lung cancer and their correlation with vasculogenic mimicry», «Vasculogenic mimicry and expression of slug and vimentin correlate with metastasis and prognosis in non-small cell lung cancer» the authors employed multivariate Cox proportional hazards regression analysis to assess the independent prognostic value of various factors (29, 30, 35).