KMT2A and Wiedemann-Steiner syndrome: KMT2A variants are associated to the WDSTS, a rare autosomal dominant condition characterized by different debilities, mainly intellectual disability, short stature, hypertrichosis, distinctive facial features (thick eyebrows, long eyelashes, narrow palpebral fissures, hypertelorism, ptosis, broad nasal tip), and skeletal abnormalities (clinodactyly, brachydactyly, advanced bone age) (24).