TCHH and Autoimmunity: Thus, we consider that TCHH is particularly prone to express candidate autoantigens in AA by a) being one of the earliest expressed proteins in early anagen (Anagen III) and b) by being a protein substrate for PADIs and TGases – for creation of citrullinated or deamidated amino acids can play very crucial roles in the induction of several autoimmune disorders (82).