Glutathione Synthetase Deficiency
NORD gratefully acknowledges Agne Larsson, AL, MD & PhD, Emeritus Professor of Pediatrics, Karolinska Institute, Stockholm, Sweden, for assistance in the preparation of this report.
Synonyms of Glutathione Synthetase Deficiency
- Pyroglutamic Aciduria
Glutathione synthetase deficiency is an extremely rare disorder characterized by a deficiency of the enzyme glutathione synthetase. This enzyme is part of the chemical process by which the body creates glutathione, a protein molecule that plays a role in many cell processes. Glutathione synthetase deficiency is often classified as mild, moderate or severe. Consequently, the specific symptoms and severity can vary greatly from one person to another. Generally, the mild form only affects red blood cells (erythrocytes). The severe form is widespread (generalized) affecting many types of cells of the body. The moderate form falls in between these two extremes. Glutathione synthetase deficiency is caused by alterations (mutations) in the GSS gene and is inherited in an autosomal recessive manner.
The generalized form is also known as 5-oxoprolinuria or pyroglutamic aciduria because extremely high levels of 5-oxoproline, an amino acid derivative, can be detected in the urine. However, 5-oxoprolinuria can occur as part of several different disorders or due to several environmental factors.
1988, 1989, 1990, 1999, 2002, 2015
The information in NORD’s Rare Disease Database is for educational purposes only and is not intended to replace the advice of a physician or other qualified medical professional.
The content of the website and databases of the National Organization for Rare Disorders (NORD) is copyrighted and may not be reproduced, copied, downloaded or disseminated, in any way, for any commercial or public purpose, without prior written authorization and approval from NORD. Individuals may print one hard copy of an individual disease for personal use, provided that content is unmodified and includes NORD’s copyright.
National Organization for Rare Disorders (NORD)
55 Kenosia Ave., Danbury CT 06810 • (203)744-0100