MCOLN1 and Duchenne muscular dystrophy: Expression levels of TFEB (GSE1007_GPL92_50221_at) and its target genes (SQSTM1, MAP1LC3B, or BECN1) were decreased in DMD patients (Fig. 2a and e), although LAMP1, ATP6V1a and MCOLN1, were not reduced in DMD (Fig. 2e).