MAP2K7 and Miyoshi myopathy: Considering on the whole the three analyzed genes, the MEK/ERK signalling pathway was affected by mutational events in more than half of the cases (96/167, 57.5%) (Figure 3), being more frequent in sPCL (7/11, 63.6%) and MM (79/132, 59.8%), and relatively less frequent in pPCL (10/24, 41.7%); this latter finding is consistent with what newly emerged from a WES study in a smaller fraction of the pPCL patients of the present series [16].