MRTFA p.Ile474=
c.1422T>C · rs766527368 · VCV1683084
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.01%, amr)
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 -3.9 | GERP -4.8 |
| Overall | ||
| CADD | 0.146 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.01%
Admixed American · 6/59,988 alleles
Filtering AF
0.00563%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.00515%
Overall
0.00582%
94/1,613,822 alleles · ultra-rare
exomes 85/1,461,658 · genomes 9/152,164 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Admixed Americangrpmax | 0.01% | 9,998 |
| Remaining individualsnot grpmax-eligible | 0.008% | 12,497 |
| European (non-Finnish) | 0.00686% | 14,568 |
| African / African-American | 0.00267% | 37,459 |
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.Ile474=
- Coding
- c.1422T>C
- MANE Select
- NM_020831
- dbSNP
- rs766527368
- Type
- single nucleotide variant
- Location
- chr22:40419316 (GRCh38)
- Gene constraint
- LOEUF 0.389 · pLI 1.00 (gnomAD)
- Structure
- AlphaFold pLDDT 56.59 · 2 PDB
- Residue 474
- the 'disordered' region
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-ile474 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown