Even though phenotypic overlap between patients with COL12A1‐related myopathy and patients with Bethlem myopathy, a form of COL6‐related dystrophy due to mutations in collagen VI genes (COL6A1, COL6A2, or COL6A3) has been noted, several features help distinguish these disorders. This evidence concerns the gene COL6A2 and Bethlem myopathy.