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Tyrosinemia type I

From SNPedia
(Redirected from Tyrosinemia type 1)

Tyrosinemia type 1 is a serious recessive condition caused by an enzyme deficiency. It is extremely rare, occurring in about 1 in 100,000 people worldwide, but in 1 in 2,000 among some French-Canadian populations. [1]

Type 1 disease is caused by mutations in the fumarylacetoacetase (FAH) gene. Carriers with a single mutated copy of the gene are not affected. Other types of tyrosinemia are caused by defects in the 4-hydroxyphenylpyruvate dioxygenase (HPD) and tyrosine aminotransferase (TAT) genes.

SNPs associated with tyrosinemia type 1 include:

An apparently less severe form of tyrosinemia type 1 caused by a novel mutation in the FAH gene was reported in 2009 in a Belgian infant. [PMID 20003495]

  • 103G>A (Ala35Thr), which in GRCh38, is at position 80158081 (ch 15) but currently lacks an entry in dbSNP