NCIt related terms : MGA-1; Juvenile Megaloblastic Anemia; Imerslund-Gräsbeck Syndrome;
Alternative definition : NICHD: An autosomal recessive disorder caused by mutations in the CUBN or AMN genes.
It is characterized by vitamin B12 deficiency due to selective malabsorption of the
vitamin, and usually results in megaloblastic anemia appearing in childhood (but not
immediately after birth).;