highly significantP < 0.001
Individual linear regression plots demonstrated highly significant linear relationships between eGFR and protein levels for HLA-E, EFNA1, EPHA2, FSTL3, ART3, GM2A, CLEC1A, CKAP4, GPR158, and IFNGR1 (all P < 0.001), with Pearson correlation coefficients typically ranging from -0.4 to -0.6.