“…The evaluation of KS remains challenging, in particular in cases without fullblown clinical picture (Lai-Cheong et al, 2008;Has et al, 2014b). This is due to three factors: (i) the KS phenotype may overlap with those of other EB types; (ii) specific antibodies to kindlin-1 are not widely available and display faint immunostaining signals, even in normal human skin, probably because of the discrete distribution of "focal adhesion" equivalents in the tissue; and (iii) the broad spectrum of mostly private FERMT1 mutations and mutational mechanisms (HGMD professional 2015.1, https://gre nada.lumc.nl/LOVD2/) (Fuchs-Telem et al, 2014;Youssefian et al, 2015).…”