Many other mutations in PPCM are shared with DCM, including the desmoplakin (DSP) gene, the LMNA gene from the nuclear lamina, the FLCN gene which encodes the protein in intercalated discs, and the BAG3 gene which encodes a co-chaperon of the heat shock protein Hsp70 [33]. Here, DSP is linked to familial dilated cardiomyopathy.