FLRT3 p.Tyr121=
c.363T>C · rs752289875 · VCV2652208
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
ultra-rare (popmax 0.015%, amr)
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 -0.91 | GERP -3 |
| Overall | ||
| CADD | 2.222 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.015%
Admixed American · 9/59,970 alleles
Filtering AF
0.00774%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.00579%
Overall
0.0018%
29/1,613,690 alleles · ultra-rare
exomes 25/1,461,524 · genomes 4/152,166 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Admixed Americangrpmax | 0.015% | 6,663 |
| European (non-Finnish) | 0.00161% | 62,094 |
| African / African-American | 0.00134% | 74,896 |
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
- FLRT3
- Protein
- p.Tyr121=
- Coding
- c.363T>C
- MANE Select
- NM_198391
- dbSNP
- rs752289875
- Type
- single nucleotide variant
- Location
- chr20:14327144 (GRCh38)
- Gene constraint
- LOEUF 0.585 · pLI 0.55 (gnomAD)
- Structure
- AlphaFold pLDDT 74.57 · 3 PDB
- Residue 121
- an α-helix
Similar variants
- FLRT3 p.Arg163Cys Uncertain significance ★★ ⚠ same type
- FLRT3 p.Leu109Val Uncertain significance ★★ ⚠ same type
- FLRT3 p.Ser25Pro Uncertain significance ★★ ⚠ same type
- FLRT3 p.Ser284Arg Uncertain significance ★★ ⚠ same type
- FLRT3 p.Ser33Pro Uncertain significance ★★ ⚠ same type
- FLRT3 p.Thr199Ser Uncertain significance ★★ ⚠ same type
- FLRT3 p.Thr419Ser Uncertain significance ★★ ⚠ same type
- FLRT3 p.Trp381Arg 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/flrt3-p-tyr121 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown