NOTCH1 p.Pro668=
c.2004G>A · rs746470497 · VCV2720243
Benign/Likely benign
Multiple submitters
Classification
Benign/Likely benign
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
ultra-rare (popmax 0.0164%, mid)
Conditions
2
Adams-Oliver syndrome 5
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 -20 | GERP -4.5 |
| Overall | ||
| CADD | 0.109 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0164%
Middle Eastern · 1/6,084 alleles
Filtering AF
0.00175%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.00104%
Overall
0.00155%
25/1,612,536 alleles · ultra-rare
exomes 24/1,460,334 · genomes 1/152,202 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Middle Easterngrpmax | 0.0164% | 6,084 |
| African / African-American | 0.00534% | 18,731 |
| Remaining individualsnot grpmax-eligible | 0.0048% | 20,821 |
| South Asian | 0.00329% | 30,359 |
| European (non-Finnish) | 0.00119% | 84,274 |
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
- NOTCH1
- Protein
- p.Pro668=
- Coding
- c.2004G>A
- MANE Select
- NM_017617
- dbSNP
- rs746470497
- Type
- single nucleotide variant
- Location
- chr9:136515300 (GRCh38)
- Gene constraint
- LOEUF 0.217 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
- Structure
- AlphaFold pLDDT 59.74 · 29 PDB
- Residue 668
- the egf-like 17; calcium-binding domain
Similar variants
- NOTCH1 p.Pro668Ala Conflicting classifications of pathogenicity ★ ⚠ same residue
- NOTCH1 p.Pro668Leu Conflicting classifications of pathogenicity ★ ⚠ same residue
- NOTCH1 c.1099+1G>T Pathogenic/Likely pathogenic ★★ same condition
- NOTCH1 c.3511-1G>A Likely pathogenic ★★ same condition
- NOTCH1 p.Arg1107Ter Pathogenic ★★ same condition
- NOTCH1 p.Arg448Ter Pathogenic ★★ same condition
- NOTCH1 p.Arg56Ter Pathogenic ★★ same condition
- NOTCH1 p.Asp1517Asn 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/notch1-p-pro668 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown