USP7 p.Ala221=
c.663G>A · rs770735072 · VCV2780633
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
very rare (popmax 0.00668%, eas)
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 -5.1 | GERP -4.6 |
| Overall | ||
| CADD | 6.311 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.00668%
East Asian · 3/44,896 alleles
Filtering AF
0.00177%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.000891%
Overall
0.000744%
12/1,613,950 alleles · very rare
exomes 11/1,461,780 · genomes 1/152,170 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| East Asiangrpmax | 0.00668% | 14,965 |
| South Asian | 0.00439% | 22,768 |
| European (non-Finnish) | 0.000424% | 236,007 |
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
- USP7
- Protein
- p.Ala221=
- Coding
- c.663G>A
- MANE Select
- NM_003470
- dbSNP
- rs770735072
- Type
- single nucleotide variant
- Location
- chr16:8919088 (GRCh38)
- Gene constraint
- LOEUF 0.085 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
- Structure
- AlphaFold pLDDT 86.50 · 86 PDB
- Residue 221
- the usp domain; a UniProt-annotated variant site (in hafous; when expressed in usp7-deficient cells does not rescue defective endosomal protein recycling and reduced f-actin levels); an α-helix
Similar variants
- USP7 p.Ala221Val Uncertain significance ★ ⚠ same residue
- USP7 c.611+1G>A Likely pathogenic ★★ same type
- USP7 p.Arg1018Ter Pathogenic/Likely pathogenic ★★ same type
- USP7 p.Arg239Ter Pathogenic ★★ same type
- USP7 p.Arg508Ter Pathogenic ★★ same type
- USP7 p.Gln866Ter Pathogenic/Likely pathogenic ★★ same type
- USP7 c.3039+3A>G Uncertain significance ★★ same type
- USP7 c.852-4A>G 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/usp7-p-ala221 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown