(i) AR CD25 deficiency due to mutation in Interleukin 2 Receptor Subunit Alpha (IL2RA): bullous pemphigoid, higher susceptibility to infection with chronic viral, fungal and bacterial infections, lymphadenopathy, hepatosplenomegaly and polyautoimmunity [34]; (ii) AR STAT5b deficiency: growth-hormone insensitive dwarfism and dysmorphic features. Here, IL2RA is linked to infection.