Adult 1 Article 1 CTLA-4 Antigen 1 CTLA4 1 CTLA4 gene 1 CTLA4 protein, human Case-Control Studies 1 Caucasian 1 Female 1 Gene Expression 1 Gene Frequency 1 Genetic Association Studies 1 Genetic Predisposition to Disease 1 Humans 1 Male 1 Middle Aged 1 Middle East 1 Polymorphism, Single Nucleotide 1 Vitiligo 1 Whites 1 Young Adult 1 adult 1 case control study 1 codon 1 controlled study 1 cytotoxic T lymphocyte antigen 4 1 disease association 1 disease severity 1 female 1 gene 1