The primary characteristic of<unk>  is the presence of glycine and imino acids in the urine. Otherwise, it is thought to be a relatively benign disorder, although symptoms associated with disruptions of proline and glycine metabolism caused by malabsorption may be present with<unk> . These include encephalopathy, mental retardation, deafness, blindness, kidney stones, hypertension and gyrate atrophy. Gyrate atrophy is an inherited degenerative disorder of the retina and choroid, sometimes accompanying the metabolic condition hyperornithinemia. The presence of gyrate atrophy with<unk>  stems from a deficiency of proline in chorioretinal tissues, while processes behind hyperornithinemia disrupt the metabolic pathway from ornithine to proline, which alters the catabolism of ornithine, and also results in reduced levels of proline. Thus, gyrate atrophy can be found with either disorder, with proline deficiency as an underlying feature. Hyperglycinuria is another disorder affecting reabsorption of glycine and imino acids, similar to<unk>  and considered to be a heterozygous form. When accompanied by a specific type of kidney stone (nephrolithiasis), it is sometimes referred to as<unk> , type II".
Iminoglycinuria
Xanthinuria
Cystinuria
Lipiduria
Trimethylaminuria
Chyluria
Pentosuria
Beeturia