TTI2 p.Ile346=
c.1038C>T · rs756836109 · VCV2658532
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
very rare (popmax 0.00533%, 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 0.15 | GERP -0.29, phastCons 0.81 |
| Overall | ||
| CADD | 5.3 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.00533%
African / African-American · 4/75,062 alleles
Filtering AF
0.00174%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.00104%
Overall
0.000372%
6/1,614,154 alleles · very rare
exomes 6/1,461,852 · genomes 0/152,302 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| African / African-Americangrpmax | 0.00533% | 18,765 |
| Remaining individualsnot grpmax-eligible | 0.0016% | 62,508 |
| European (non-Finnish) | 8.47e-05% | 1,180,036 |
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
- TTI2
- Protein
- p.Ile346=
- Coding
- c.1038C>T
- MANE Select
- NM_001102401
- dbSNP
- rs756836109
- Type
- single nucleotide variant
- Location
- chr8:33503825 (GRCh38)
- Gene constraint
- LOEUF 0.758 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 84.85 · 2 PDB
Similar variants
- TTI2 p.Arg334Gln Uncertain significance ★★ ⚠ same type
- TTI2 p.Arg355His Uncertain significance ★★ ⚠ same type
- TTI2 p.Arg379Trp Uncertain significance ★★ ⚠ same type
- TTI2 p.Gly190Val Uncertain significance ★★ ⚠ same type
- TTI2 p.Pro149Leu Uncertain significance ★★ ⚠ same type
- TTI2 p.Thr232Ile Uncertain significance ★★ ⚠ same type
- TTI2 p.Thr237Ala Uncertain significance ★★ ⚠ same type
- TTI2 c.-99-31C>T Benign ★★ 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/tti2-p-ile346 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown