TF p.Gln203=
c.609A>G · rs139536098 · VCV2902946
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.0507%, afr)
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Splicing | ||
| SpliceAI | <0.2 | no splice effect predicted · four deltas, not one · how we know |
|---|---|---|
| Constraint at this position | ||
| Conservation | phyloP -8.3 | GERP -4.1 |
| Overall | ||
| CADD | 0.123 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0507%
African / African-American · 38/74,918 alleles
Filtering AF
0.038%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.0335%
Overall
0.00347%
56/1,613,982 alleles · ultra-rare
exomes 32/1,461,806 · genomes 24/152,176 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| African / African-Americangrpmax | 0.0507% | 1,972 |
| East Asian | 0.0134% | 7,482 |
| Remaining individualsnot grpmax-eligible | 0.0112% | 8,927 |
| Admixed American | 0.00333% | 29,999 |
| South Asian | 0.0022% | 45,541 |
| European (non-Finnish) | 8.47e-05% | 1,179,980 |
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
- TF
- Protein
- p.Gln203=
- Coding
- c.609A>G
- MANE Select
- NM_001063
- dbSNP
- rs139536098
- Type
- single nucleotide variant
- Location
- chr3:133755469 (GRCh38)
- Gene constraint
- LOEUF 0.834 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 93.39 · 69 PDB
- Residue 203
- the transferrin-like 1 domain
Similar variants
- TF c.-18C>T Uncertain significance ★★ same type
- TF p.Ala318Ser Uncertain significance ★★ ⚠ same type
- TF p.Ala72Val Uncertain significance ★★ ⚠ same type
- TF p.Gln264Glu Uncertain significance ★★ ⚠ same type
- TF p.Gln559Leu Uncertain significance ★★ ⚠ same type
- TF p.Ile229Thr Uncertain significance ★★ ⚠ same type
- TF p.Thr112Ala Uncertain significance ★★ ⚠ same type
- TF p.Val270Asp 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/tf-p-gln203 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown