Receiver Operating Characteristic (ROC) curve showed that FABP4 level was a significant-good diagnostic test for early detection of vitiligo with best cut off point 33.0 ng/mL, the sensitivity of 82%, specificity of 76%, and 0.863 area under the curve (p < 0.001) (Fig. 2a). The gene discussed is FABP4; the disease is vitiligo.