CRAT p.Ile528=
c.1584C>T · rs771266095 · VCV3017825
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
very rare (popmax 0.0022%, sas)
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 -2.7 | GERP -3.4 |
| Overall | ||
| CADD | 3.646 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0022%
South Asian · 2/91,088 alleles
Filtering AF
0.000365%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.000136%
Overall
0.000411%
6/1,461,608 alleles · very rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| South Asiangrpmax | 0.0022% | 45,544 |
| Admixed American | 0.00167% | 60,032 |
| European (non-Finnish) | 0.000254% | 393,346 |
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
- CRAT
- Protein
- p.Ile528=
- Coding
- c.1584C>T
- MANE Select
- NM_000755
- dbSNP
- rs771266095
- Type
- single nucleotide variant
- Location
- chr9:129096079 (GRCh38)
- Gene constraint
- LOEUF 1.111 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 94.75 · 3 PDB
- Residue 528
- an α-helix
Similar variants
- CRAT p.Ile528Thr Uncertain significance ★ ⚠ same residue
- CRAT p.Ala260Pro Uncertain significance ★★ ⚠ same type
- CRAT p.Ala262Thr Uncertain significance ★★ ⚠ same type
- CRAT p.Ala544Thr Uncertain significance ★★ ⚠ same type
- CRAT p.Ala546Thr Uncertain significance ★★ ⚠ same type
- CRAT p.Ala596Thr Uncertain significance ★★ ⚠ same type
- CRAT p.Ala596Val Uncertain significance ★★ ⚠ same type
- CRAT p.Ala600Thr 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/crat-p-ile528 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown