MTHFD1 p.Arg804=
c.2412A>G · rs368053637 · VCV1463522
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.06%, afr)
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| REVEL | 0.033 | moderately benign-leaning |
|---|---|---|
| Splicing | ||
| SpliceAI | — | not assessed · no allele here is in the release |
| Constraint at this position | ||
| Conservation | phyloP 1.9 | GERP -0.15, phastCons 1 |
| Overall | ||
| CADD | 22.7 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.06%
African / African-American · 45/75,042 alleles
Filtering AF
0.046%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.0411%
Overall
0.00285%
46/1,614,196 alleles · ultra-rare
exomes 26/1,461,864 · genomes 20/152,332 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| African / African-Americangrpmax | 0.06% | 1,668 |
| Admixed American | 0.00167% | 60,026 |
Rarity supports pathogenicity (ACMG PM2); frequency above a disease-specific BA1/BS1 threshold argues against it. A variant frequent in one ancestry group can be near-absent in others, so a single global figure can mislead.
Variant & gene context
- Gene
- MTHFD1
- Protein
- p.Arg804=
- Coding
- c.2412A>G
- MANE Select
- NM_005956
- dbSNP
- rs368053637
- Type
- single nucleotide variant
- Location
- chr14:64449577 (GRCh38)
- Gene constraint
- LOEUF 0.51 · pLI 0.83 (gnomAD)
- Structure
- AlphaFold pLDDT 94.63 · 12 PDB
- Residue 804
- a UniProt-annotated variant site (in cimah); the 'formyltetrahydrofolate synthetase domain' region
Similar variants
- MTHFD1 c.727+1G>A Pathogenic/Likely pathogenic ★★ same type
- MTHFD1 p.Arg173Cys Pathogenic/Likely pathogenic ★★ same type
- MTHFD1 p.Gln100Ter Likely pathogenic ★★ same type
- MTHFD1 p.Glu225Ter Pathogenic ★★ same type
- MTHFD1 p.Ser49Phe Pathogenic/Likely pathogenic ★★ same type
- MTHFD1 c.186+5C>T Uncertain significance ★★ same type
- MTHFD1 p.Arg173His Uncertain significance ★★ ⚠ same type
- MTHFD1 p.Arg293Cys Uncertain significance ★★ ⚠ same type
Built on 18 open, versioned datasets — ClinVar, gnomAD, AlphaMissense, REVEL, ClinGen & more — plus Sugi Variant's own cross-source analysis. Source data 2026-01–2026-10, ClinVar 2026-10. Full sources & versions →
Cite Sugi Variant
Gür T. Sugi Variant: A Deterministic Per-Variant Germline Reference from a Knowledge Graph for Humans and AI Agents. 2026. doi:10.5281/zenodo.21509445. This variant: https://sugi.bio/variant/mthfd1-p-arg804 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown