ESPN p.Pro648=
c.1944G>A · rs778528021 · VCV2885920
Likely benign
Multiple submitters
Classification
Likely benign
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
ultra-rare (popmax 0.0284%, amr)
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 -1.4 | GERP -2.8 |
| Overall | ||
| CADD | 8.35 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0284%
Admixed American · 17/59,946 alleles
Filtering AF
0.018%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.0147%
Overall
0.00161%
26/1,613,088 alleles · ultra-rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Admixed Americangrpmax | 0.0284% | 3,526 |
| Ashkenazi Jewishnot grpmax-eligible | 0.00338% | 29,600 |
| Remaining individualsnot grpmax-eligible | 0.0016% | 62,466 |
| African / African-American | 0.00133% | 74,950 |
| European (non-Finnish) | 0.000509% | 196,653 |
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
- ESPN
- Protein
- p.Pro648=
- Coding
- c.1944G>A
- MANE Select
- NM_031475
- dbSNP
- rs778528021
- Type
- single nucleotide variant
- Location
- chr1:6451631 (GRCh38)
- Gene constraint
- LOEUF 1.307 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 68.76
- Residue 648
- the 'disordered' region
Similar variants
- ESPN p.Pro648Leu Uncertain significance ★ ⚠ same residue
- ESPN c.1464+1G>A Likely pathogenic ★★ same type
- ESPN p.Ala139Thr Uncertain significance ★★ ⚠ same type
- ESPN p.Ala23Thr Uncertain significance ★★ ⚠ same type
- ESPN p.Ala484Thr Uncertain significance ★★ ⚠ same type
- ESPN p.Ala591Val Uncertain significance ★★ ⚠ same type
- ESPN p.Ala610Pro Uncertain significance ★★ ⚠ same type
- ESPN p.Ala624Thr 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/espn-p-pro648 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown