SOS2 p.Arg1027=
c.3079A>C · rs1273822060 · VCV1142474
Likely benign
Multiple submitters
Classification
Likely benign
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
very rare (popmax 0.00384%, nfe)
Conditions
1
Noonan syndrome 9
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation/SpliceAI carries the signal. | ||
| Splicing | ||
| SpliceAI | Δ0.42 | acceptor loss, 2 bp away · masked 0 · deltas |
|---|---|---|
| Constraint at this position | ||
| Conservation | phyloP 6.2 | GERP 1.8, phastCons 1 |
| Overall | ||
| CADD | 9.204 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.00384%
European (non-Finnish) · 45/1,172,042 alleles
Filtering AF
0.00293%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.00261%
Overall
0.00295%
47/1,594,724 alleles · very rare
exomes 46/1,442,490 · genomes 1/152,234 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| European (non-Finnish)grpmax | 0.00384% | 26,045 |
| Remaining individualsnot grpmax-eligible | 0.00325% | 30,790 |
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
- SOS2
- Protein
- p.Arg1027=
- Coding
- c.3079A>C
- MANE Select
- NM_006939
- dbSNP
- rs1273822060
- Type
- single nucleotide variant
- Location
- chr14:50130759 (GRCh38)
- Gene constraint
- LOEUF 0.415 · pLI 1.00 · ClinGen HI 0/3 (gnomAD)
- Structure
- AlphaFold pLDDT 74.67 · 11 PDB
- Residue 1027
- the 'disordered' region; an α-helix
Similar variants
- SOS2 p.Arg1027Lys Uncertain significance ★ ⚠ same residue
- SOS2 p.Met267Lys Likely pathogenic ★★★ ⚠ same condition
- SOS2 p.Ala1195Val Uncertain significance ★★★ ⚠ same condition
- SOS2 p.Arg225Gln Uncertain significance ★★★ ⚠ same condition
- SOS2 p.Arg986Lys Uncertain significance ★★★ ⚠ same condition
- SOS2 p.Thr1079Ala Uncertain significance ★★★ ⚠ same condition
- SOS2 p.Asn867Ser Likely benign ★★★ same condition
- SOS2 p.Met267Arg Pathogenic/Likely pathogenic ★★ ⚠ same condition
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/sos2-p-arg1027 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown