“…Considering its role as a negative regulator of T-cell activation, it comes as no great surprise that the CTLA-4 gene was found to be associated with a variety of autoimmune conditions [134]. The CTLA-4 gene locus was reported to be linked and/or associated with type 1 diabetes mellitus (T1D) [135e 137], asthma [138], Addison's disease [139], myasthenia gravis [140], Sjogren's syndrome [141], systemic lupus erythematosus (SLE) [142], systemic sclerosis [143], ulcerative colitis [144] and with all forms of AITD (GD, HT, and TAbs [123], see below).…”