Other Names for this Disease
- AGA deficiency
- Aspartylglucosamidase (AGA) deficiency
- Glycosylasparaginase deficiency
People with this condition may also have bones that become progressively weak and prone to fracture (osteoporosis), an unusually large range of joint movement (hypermobility), and loose skin. Affected individuals tend to have a characteristic facial appearance that includes widely spaced eyes (ocular hypertelorism), small ears, and full lips. The nose is short and broad and the face is usually square-shaped. Children with this condition may be tall for their age, but lack of a growth spurt in puberty typically causes adults to be short. Affected children also tend to have frequent upper respiratory infections. Individuals with aspartylglucosaminuria usually survive into mid-adulthood. The skeleton may also become deformed. The spine may be twisted (scoliosis) and the neck may be unusually short. The eyes may also develop cataracts. Behavior problems are common. Lung, heart and blood problems tend to occur in later years.
The Human Phenotype Ontology provides the following list of signs and symptoms for Aspartylglycosaminuria. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms.
The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature.
The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined.
Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common.
- Aspartylglucosaminuria. Genetics Home Reference. December 2008; http://ghr.nlm.nih.gov/condition/aspartylglucosaminuria. Accessed 8/17/2011.
- Aspartylglycosaminuria . National Organization for Rare Disorders (NORD). 2004; http://www.rarediseases.org/rare-disease-information/rare-diseases/byID/918/viewAbstract. Accessed 8/17/2011.