Abstract
We report 2 sequential homozygous mutations in the recently cloned proton-coupled folate transporter (PCFT) gene, resulting in the absence of this protein, in a 27-year-old woman with hereditary folate malabsorption, normal in all respects having completed higher education, who has been treated with parenteral 5-formyltetrahydrofolate since infancy.
MeSH terms
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Adult
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Blotting, Northern
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Blotting, Western
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DNA Mutational Analysis
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Exons
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Female
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Folic Acid / metabolism*
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Follow-Up Studies
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Humans
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Infusions, Parenteral
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Leucovorin / administration & dosage
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Leucovorin / therapeutic use
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Malabsorption Syndromes / drug therapy
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Malabsorption Syndromes / genetics*
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Malabsorption Syndromes / metabolism
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Membrane Transport Proteins / biosynthesis
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Membrane Transport Proteins / genetics*
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Mutation*
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Proton-Coupled Folate Transporter
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RNA, Messenger / genetics*
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Vitamin B Complex / administration & dosage
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Vitamin B Complex / therapeutic use
Substances
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Membrane Transport Proteins
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Proton-Coupled Folate Transporter
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RNA, Messenger
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SLC46A1 protein, human
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Vitamin B Complex
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Folic Acid
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Leucovorin