NTN1 and Bartsocas-Papas syndrome 1: The AUC of ROC for the ability of netrin-1 level to independently predict a diagnosis of BPS/IC was 0.858 (95% CI: 0.788–0.929, P < 0.001), and the AUC of ROC for the nomogram model of netrin-1 combined with other clinical parameters was 0.884 (95% CI: 0.821–0.946, P < 0.001), with a sensitivity of 80% and specificity of 90%.