NCIt definition : Human CTLA4 wild-type allele is located within 2q33 and is approximately 6 kb in length.
This allele, which encodes cytotoxic T-lymphocyte protein 4, is involved in signal
transduction and T-cell regulation. Variant alleles generated from mutations in the
gene, have been associated with insulin-dependent diabetes mellitus, Graves disease,
Hashimoto thyroiditis, celiac disease, systemic lupus erythematosus, thyroid-associated
orbitopathy, and other autoimmune diseases.;