- Type I tyrosinemia
Infobox_Disease
Name = PAGENAME
Caption =Tyrosine
DiseasesDB = 13478
DiseasesDB_mult =
ICD10 = ICD10|E|70|2|e|70
ICD9 = ICD9|270.2
ICDO =
OMIM = 276700
OMIM_mult =
MedlinePlus =
eMedicineSubj = ped
eMedicineTopic = 2339
MeshID = D020176Type I tyrosinemia is the most severe form of this disorder and is caused by a shortage of the
enzyme fumarylacetoacetate hydrolase (EC number|3.7.1.2), encoded by the gene FAH found on chromosome number 15. Fumarylacetoacetate hydrolase is the last in a series of five enzymes needed to break down tyrosine. Symptoms of type I tyrosinemia usually appear in the first few months of life and include failure to gain weight and grow at the expected rate (failure to thrive), diarrhea, vomiting, yellowing of the skin and whites of the eyes (jaundice ), cabbagelike odor, and increased tendency to bleed (particularlynosebleed s). Type I tyrosinemia can lead toliver andkidney failure, problems affecting thenervous system , and an increased risk of liver cancer.Worldwide, type I tyrosinemia affects about 1 person in 100,000. This type of tyrosinemia is much more common in Quebec, Canada. The overall incidence in
Quebec is about 1 in 16,000 individuals. In theSaguenay-Lac-Saint-Jean region of Quebec, type 1 tyrosinemia affects 1 person in 1,846. [cite journal |author=Grompe M, St-Louis M, Demers SI, al-Dhalimy M, Leclerc B, Tanguay RM |title=A single mutation of the fumarylacetoacetate hydrolase gene in French Canadians with hereditary tyrosinemia type I |journal=N. Engl. J. Med. |volume=331 |issue=6 |pages=353–7 |year=1994 |pmid=8028615 |doi= |url=http://content.nejm.org/cgi/pmidlookup?view=short&pmid=8028615&promo=ONFLNS19]References
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