TP53 and Miyoshi myopathy: Thus, to scan for GFI1 occupancy on the SGPP1 gene in MM cells over a large region (~3 Kb) of the SGPP1 locus (Figure 5A), we performed an initial broad-resolution GFI1 ChIP-qPCR screen using a 500 bp chromatin fragmentation of fixed chromatin from MM cell lines MM.1S (p53 WT) and OPM-2 (p53 mut) GFI1 o/e and their EV controls (Table S4).