Conditions / Genetic
homocystinuria-megaloblastic anemia cblE type
info · Genetic
An amino acid metabolic disorder characterized by failure of cells to incorporate methyltetrahydrofolate into methionine and somewhat variable features that include delayed psychomotor development, hypotonia, megaloblastic anemia, homocystinuria, and hypomethi
An amino acid metabolic disorder characterized by failure of cells to incorporate methyltetrahydrofolate into methionine and somewhat variable features that include delayed psychomotor development, hypotonia, megaloblastic anemia, homocystinuria, and hypomethioninemia that has_material_basis_in homozygous or compound heterozygous mutation in the MTRR gene on chromosome 5p15.31.
Signs and symptoms
- Hyperhomocystinemia
- Failure to thrive
- Megaloblastic anemia
- Global developmental delay
- Normocytic anemia
- Hyperkinetic movements
- Hypertonia
- Lethargy
- Cerebral cortical atrophy
- Seizure
Also known as: HMAE; functional methionine synthase deficiency type cblE; homocystinuria-megaloblastic anemia due to defect in cobalamin metabolism cblE complementation type; methylcobalamin deficiency, cblE type; vitamin B12-responsive homocystinuria, cblE type