GJB2 and psoriasis: Studies revealed a dramatic upregulation of Cx26 in psoriatic lesions, suggesting it as a marker for psoriasis (Rivas et al., 1997; Labarthe et al., 1998; Lucke et al., 1999; Sun et al., 2010; Li et al., 2014; Martin et al., 2014; Yao et al., 2015; Garcia-Vega et al., 2021).