TNF and vitiligo: Several candidate genes have been linked to vitiligo [13], such as genes involved in the leukocyte antigen system (HLA, MIM 615161), cytotoxic T lymphocyte-associated 4 (CTLA4, MIM 123890), tumor necrosis factors (TNFα, MIM 191160), and autoimmune regulators (AIRE gene, MIM 607358) [14].