borderline significantP = 0·0740
A borderline significant association was observed between the percentage of tissue staining positive for VEGF and PD‐1 ( P = 0·0740; rho = 0·3563) and a significant correlation was found between sPD‐1 and sVEGF in plasma ( P = 0·0072, rho = 0·3722), although both correlations were weak (Fig 4D ).