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Methylmalonic acidemia with homocystinuria

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Methylmalonic acidemia with homocystinuria
Other namesCombined defect in adenosylcobalamin and methylcobalamin synthesis, methylmalonic acidemia and homocystinemia, methylmalonic aciduria with homocystinuria.[1]
Skeletal formula of methylmalonic acid.
SpecialtyEndocrinology
SymptomsLethargy, megaloblastic anemia, failure to thrive, intellectual deficit, developmental delay, and seizures.[1]

Methylmalonic acidemia with homocystinuria is a group of autosomal recessive inborn errors of cobalamin metabolism.[2]


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  1. ^ a b "Monarch Initiative". Monarch Initiative. Retrieved 2024-03-19.
  2. ^ Liu, Jinrong; Peng, Yun; Zhou, Nan; Liu, Xiaorong; Meng, Qun; Xu, Hui; Zhao, Shunying (2017). "Combined methylmalonic acidemia and homocysteinemia presenting predominantly with late-onset diffuse lung disease: a case series of four patients". Orphanet Journal of Rare Diseases. 12 (1). doi:10.1186/s13023-017-0610-8. ISSN 1750-1172. PMC 5360033. PMID 28327205.

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