LRP12 expansions were detected in several families with oculopharyngodistal myopathy (OPDM1, MIM #164310), a neuromuscular disorder in which muscular weakness in the legs and arms is associated with external ophthalmoplegia, dysphagia, and ptosis, while expansions in LOC642361/NUTM2B-AS1 were found in a single family with oculopharyngeal myopathy, limb weakness, ataxia, ptosis, and white matter abnormalities similar to those seen in NIID (OPML1, MIM #618637). This evidence concerns the gene NUTM2B and ptosis.