In addition, our results did not indicate a significant difference when allelic and genotypic frequencies of the MCP-1 −2518 A/G polymorphism were analyzed according to gender and any one of extraocular findings including neck stiffness, tinnitus, alopecia, poliosis, dysacusia, scalp hypersensitivity, and vitiligo. This evidence concerns the gene CCL2 and Poliosis.