Tyrosinemia type III

Tyrosinemia type III
Classification and external resources
Tyrosine
ICD-10	E 70.2
ICD-9	270.2
OMIM	276710
DiseasesDB	29836
eMedicine	ped/2339
MeSH	D020176

Type III tyrosinemia is a rare disorder caused by a deficiency of the enzyme 4-hydroxyphenylpyruvate dioxygenase (EC 1.13.11.27), encoded by the gene HPD. This enzyme is abundant in the liver, and smaller amounts are found in the kidneys. It is one of a series of enzymes needed to break down tyrosine. Specifically, 4-hydroxyphenylpyruvate dioxygenase converts a tyrosine byproduct called 4-hydroxyphenylpyruvate to homogentisic acid. Characteristic features of type III tyrosinemia include mild mental retardation, seizures, and periodic loss of balance and coordination (intermittent ataxia). Type III tyrosinemia is very rare; only a few cases have been reported.

Inborn error of amino acid metabolism (E70–E72, 270)

K→acetyl-CoA

Lysine/straight chain	Glutaric acidemia type 1 · type 2 · Hyperlysinemia · Pipecolic acidemia · Saccharopinuria

Leucine	Maple syrup urine disease · Isovaleric acidemia · 3-Methylcrotonyl-CoA carboxylase deficiency · 3-hydroxy-3-methylglutaryl-CoA lyase deficiency · 3-Methylglutaconic aciduria 1

Tryptophan	Hypertryptophanemia

G→pyruvate→citrate

Glycine	Sarcosinemia · D-Glyceric acidemia · Glutathione synthetase deficiency Glycine→Creatine: GAMT deficiency · Glycine encephalopathy

G→glutamate→
α-ketoglutarate

Histidine	Carnosinemia · Histidinemia · Urocanic aciduria

Proline	Hyperprolinemia · Prolidase deficiency

Glutamate/glutamine	SSADHD

G→propionyl-CoA→
succinyl-CoA

Valine	Maple syrup urine disease · Hypervalinemia · Isobutyryl-CoA dehydrogenase deficiency

Isoleucine	Maple syrup urine disease · Beta-ketothiolase deficiency · 2-Methylbutyryl-CoA dehydrogenase deficiency

Methionine	Hypermethioninemia · Homocystinuria · Cystathioninuria

General BC/OA	Propionic acidemia · Methylmalonic acidemia · Methylmalonyl-CoA mutase deficiency

G→fumarate

Phenylalanine/tyrosine

Phenylketonuria	Tetrahydrobiopterin deficiency · 6-Pyruvoyltetrahydropterin synthase deficiency

Tyrosinemia	Type II tyrosinemia · Type III tyrosinemia/Hawkinsinuria · Alkaptonuria/Ochronosis · Type I tyrosinemia

Tyrosine→Melanin	Albinism: Ocular albinism (1) · Oculocutaneous albinism (Hermansky–Pudlak syndrome) · Waardenburg syndrome

Tyrosine→Norepinephrine	Dopamine beta hydroxylase deficiency · reverse: Brunner syndrome

G→oxaloacetate


Urea cycle/Hyperammonemia (arginine, aspartate)	N-Acetylglutamate synthase deficiency · Carbamoyl phosphate synthetase I deficiency · Ornithine transcarbamylase deficiency/translocase deficiency · Citrullinemia · Argininosuccinic aciduria · Argininemia

Transport/
IE of RTT

Solute carrier family: Cystinuria · Hartnup disease · Lysinuric protein intolerance · Iminoglycinuria

Fanconi syndrome: Oculocerebrorenal syndrome · Cystinosis

Other

Trimethylaminuria · 2-Hydroxyglutaric aciduria · Fumarase deficiency

M: MET

mt, k, c/g/r/p/y/i, f/h/s/l/o/e, a/u, n, m

k, cgrp/y/i, f/h/s/l/o/e, au, n, m, epon

m(A16/C10),i(k, c/g/r/p/y/i, f/h/s/o/e, a/u, n, m)