MTHFD1

Chr 14AR

methylenetetrahydrofolate dehydrogenase, cyclohydrolase and formyltetrahydrofolate synthetase 1

Also known as: CIMAH, MTHFC, MTHFD

This gene encodes a protein that possesses three distinct enzymatic activities, 5,10-methylenetetrahydrofolate dehydrogenase, 5,10-methenyltetrahydrofolate cyclohydrolase and 10-formyltetrahydrofolate synthetase. Each of these activities catalyzes one of three sequential reactions in the interconversion of 1-carbon derivatives of tetrahydrofolate, which are substrates for methionine, thymidylate, and de novo purine syntheses. The trifunctional enzymatic activities are conferred by two major domains, an aminoterminal portion containing the dehydrogenase and cyclohydrolase activities and a larger synthetase domain. [provided by RefSeq, Jul 2008]

OMIMResearchGenerating clinical summary…

Primary Disease Associations & Inheritance

{Neural tube defects, folate-sensitive, susceptibility to}MIM #601634
AR
Combined immunodeficiency and megaloblastic anemia with or without hyperhomocysteinemiaMIM #617780
AR
UniProtColorectal cancer

Clinical highlights

Gene-disease validity (ClinGen)
combined immunodeficiency and megaloblastic anemia with or without hyperhomocysteinemia · ARDefinitivesufficient evidence for diagnostic panels
Interpreting a novel variant
This gene is strongly intolerant of loss-of-function variation in the population, so LoF variants warrant close attention. No curated mechanism annotation is available — see the mechanism card for the computational prediction and its caveats.Based on population constraint only.
0
Active trials
35
Pubs (1 yr)
P/LP submissions
P/LP missense
0.45
LOEUF
DN
Mechanism· predicted

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Moderate LoF intolerance
LoF Constraint?
0.45LOEUF
pLI 0.004
Z-score 4.62
OE 0.29 (0.190.45)
Moderately constrained

More LoF-intolerant than ~75% of genes

Missense Constraint?
1.68Z-score
OE missense 0.79 (0.730.86)
405 obs / 512.2 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios?
LoF OE?0.29 (0.190.45)
00.351.4
Missense OE?0.79 (0.730.86)
00.61.4
Synonymous OE?1.02
01.21.6
LoF obs/exp: 14 / 48.8Missense obs/exp: 405 / 512.2Syn Z: -0.17

ClinVar Variant Classifications

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

MTHFD1 · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

No active trials found for this gene.

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