MRTFA p.Thr770=
c.2310C>T · rs779998479 · VCV1682971
Likely benign
Multiple submitters
Classification
Likely benign
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 3 submitters
gnomAD v4.1
Rare
ultra-rare (popmax 0.0658%, mid)
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Splicing | ||
| SpliceAI | — | not assessed · no allele here is in the release |
|---|---|---|
| Constraint at this position | ||
| Conservation | phyloP -2.8 | GERP -4.6 |
| Overall | ||
| CADD | 3.053 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0658%
Middle Eastern · 4/6,080 alleles
Filtering AF
0.0224%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.0135%
Overall
0.00539%
87/1,613,936 alleles · ultra-rare
exomes 76/1,461,770 · genomes 11/152,166 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Middle Easterngrpmax | 0.0658% | 1,520 |
| South Asian | 0.0187% | 5,358 |
| Remaining individualsnot grpmax-eligible | 0.0176% | 5,679 |
| Admixed American | 0.0133% | 7,500 |
| African / African-American | 0.012% | 8,324 |
| European (non-Finnish) | 0.00322% | 31,051 |
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
- MRTFA
- Protein
- p.Thr770=
- Coding
- c.2310C>T
- MANE Select
- NM_020831
- dbSNP
- rs779998479
- Type
- single nucleotide variant
- Location
- chr22:40418428 (GRCh38)
- Gene constraint
- LOEUF 0.389 · pLI 1.00 (gnomAD)
- Structure
- AlphaFold pLDDT 56.59 · 2 PDB
- Residue 770
- the 'disordered' region; a UniProt-annotated variant site (in imd66; probable loss-of-function; patient's dendritic cells are morphologically distinct from control dendritic cells and show reduced spreading on fibronectin-coated coverslips, a marked reduction in total f-actin staining and a complete absence of podosomes, a similar phenotype to that of thp1 cells in which mrtfa was silenced)
Similar variants
- MRTFA p.Ala352Thr Uncertain significance ★★ ⚠ same type
- MRTFA p.Ala360Thr Uncertain significance ★★ ⚠ same type
- MRTFA p.Ala429Ser Uncertain significance ★★ ⚠ same type
- MRTFA p.Ala479Gly Uncertain significance ★★ ⚠ same type
- MRTFA p.Ala479Val Uncertain significance ★★ ⚠ same type
- MRTFA p.Ala534Thr Uncertain significance ★★ ⚠ same type
- MRTFA p.Ala537Val Uncertain significance ★★ ⚠ same type
- MRTFA p.Ala616Val 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/mrtfa-p-thr770 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown