Alternative titles and symbols : Formiminotransferase deficiency; Formiminoglutamic aciduria; FIGLU-URIA;
Description : Glutamate formiminotransferase deficiency is an autosomal recessive disorder and the
second most common inborn error of folate metabolism. Features of a severe phenotype
include elevated levels of formiminoglutamate (FIGLU) in the urine in response to
histidine administration, megaloblastic anemia, and mental retardation. Features of
a mild phenotype include high urinary excretion of FIGLU in the absence of histidine
administration, mild developmental delay, and no hematologic abnormalities (summary
by Hilton et al., 2003).;