Alternative titles and symbols : Pyrimidine 5-prime nucleotidase deficiency, hemolytic anemia due to; Hemolytic anemia due to p5n deficiency; Umph1 deficiency; P5n deficiency; Hemolytic anemia due to umph1 deficiency; Uridine 5-prime monophosphate hydrolase deficiency, hemolytic anemia due to;
Description : Deficiency of pyrimidine 5-prime nucleotidase, also called uridine 5-prime monophosphate
hydrolase, causes an autosomal recessive hemolytic anemia characterized by marked
basophilic stippling and the accumulation of high concentrations of pyrimidine nucleotides
within the erythrocyte. The enzyme is implicated in the anemia of lead poisoning and
is possibly associated with learning difficulties. Hirono et al. (1988) suggested
that this deficiency is the third most common RBC enzymopathy--after G6PD (300908)
and pyruvate kinase (see 266200) deficiencies--causing hemolysis (summary by Marinaki
et al., 2001).;