DSP and cancer: Interestingly, not only did ΔCDCP1 associate with E-cadherin, β-catenin, γ-catenin, and desmoplakin in cancer cell lines as expected based on the results in Figs. 5 and 6 and a previous study [16], but ΔCDCP1 also associated with the desmosomal cadherin desmoglein 2 (Fig. 7a).