Alternative definition : NICHD: An autosomal recessive disorder caused by mutation of the NT5C3A gene. It is
the most frequent abnormality of red cell nucleotide metabolism, causing chronic,
non-spherocytic hemolytic anemia. Most affected individuals have Mediterranean, Jewish,
or African ancestry. Basophilic stippling and accumulation of pyrimidines within erythrocytes
are hallmarks of this disorder.;