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Methylmalonic aciduria, cblB type is an inherited condition in which the body is unable to metabolize certain proteins and fats properly. Signs and symptoms generally develop in the first few months of life and may include failure to thrive, lethargy, vomiting, dehydration, hypotonia, developmental delay, seizures, ataxia (problems with muscle control), feeding difficulties, and an enlarged liver (hepatomegaly). Intellectual disability is a long-term consequence. Methylmalonic aciduria, cblB type is caused by changes (mutations) in the MMAB gene and is inherited in an autosomal recessive manner. There is no cure for the condition. Treatments are focused on alleviating some of the associated symptoms and may include a special diet and various medications and/or supplements.[4437][6311]
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