From OMIM
Glass syndrome (GLASS) is characterized by intellectual disability of variable severity and dysmorphic facial features, including micrognathia, downslanting palpebral fissures, cleft palate, and crowded teeth. Additional features may include seizures, joint laxity, arachnodactyly, and happy demeanor (summary by Glass et al., 1989; Urquhart et al., 2009; Rainger et al., 2014).  http://www.omim.org/entry/612313

From MedlinePlus Genetics
SATB2-associated syndrome is a condition that affects several body systems. It is characterized by intellectual disability, severe speech problems, dental abnormalities, abnormalities of the head and face (craniofacial anomalies), and behavioral problems. Some of the common features can be described using the acronym SATB2 (which is the name of the gene involved in the condition): severe speech anomalies, abnormalities of the palate, teeth anomalies, behavioral issues with or without bone or brain anomalies, and onset before age 2.

Individuals with SATB2-associated syndrome typically have mild to severe intellectual disability, and their ability to speak is delayed or absent. Development of motor skills, such as rolling over, sitting, and walking, can also be delayed. Many affected individuals have behavioral problems, including hyperactivity and aggression. Some exhibit autistic behaviors, such as repetitive movements. A happy or overly friendly personality is also common among individuals with SATB2-associated syndrome. Less common neurological problems include feeding difficulties and weak muscle tone (hypotonia) in infancy. About half of affected individuals have abnormalities in the structure of the brain.

The most common craniofacial anomalies in people with SATB2-associated syndrome are a high arch or an opening in the roof of the mouth (high-arched or cleft palate), a small lower jaw (micrognathia), and dental abnormalities, which can include abnormally sized or shaped teeth, extra (supernumerary) teeth, or missing teeth (oligodontia). Some people with SATB2-associated syndrome have other unusual facial features, such as a prominent forehead, low-set ears, or a large area between the nose and mouth (a long philtrum). People with this disorder may also have a shortage of minerals, such as calcium, in bones (decreased bone mineral density), which makes the bones brittle and prone to fracture.

Less-commonly affected are the heart, genitals and urinary tract (genitourinary tract), skin, and hair.  https://medlineplus.gov/genetics/condition/satb2-associated-syndrome