Rare Zebra

Rare disease search prototype built on Orphanet data

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ORPHA:2169

Methylcobalamin deficiency type cblE

Also called Functional methionine synthase deficiency type cblE

Body system
Inborn errors of metabolism
Inheritance pattern
Autosomal recessive
Typical age of onset
Childhood
Estimated prevalence
<1 / 1 000 000 (Worldwide)
Rarity class
<1 / 1 000 000

ORPHA:2169 is classified under "Inborn errors of metabolism" in the Orphanet nomenclature.

Common signs

  • Global developmental delay
  • Megaloblastic bone marrow
  • Hyperhomocystinemia
  • Microcephaly
  • Abnormality of the eye
  • Intellectual disability