SETD1B p.Ala666=
c.1998G>A · rs534731512 · VCV3042821
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
low-frequency (popmax 1.54%, afr)
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 -10 | GERP -2.9 |
| Overall | ||
| CADD | 0.03 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
1.54%
African / African-American · 1,080/70,100 alleles
Filtering AF
1.46%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 1.43%
Overall
0.0837%
1,283/1,532,434 alleles · low-frequency
exomes 638/1,386,286 · genomes 645/146,148 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| African / African-Americangrpmax | 1.54% | 65 |
| Admixed American | 0.174% | 574 |
| Remaining individualsnot grpmax-eligible | 0.141% | 710 |
| Middle Eastern | 0.0409% | 2,445 |
| South Asian | 0.00599% | 16,694 |
| East Asian | 0.00248% | 40,246 |
| European (non-Finnish) | 0.0021% | 47,653 |
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
- SETD1B
- Protein
- p.Ala666=
- Coding
- c.1998G>A
- MANE Select
- NM_001353345
- dbSNP
- rs534731512
- Type
- single nucleotide variant
- Location
- chr12:121814213 (GRCh38)
- Gene constraint
- LOEUF 0.109 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
- Structure
- AlphaFold pLDDT 46.43 · 4 PDB
Similar variants
- SETD1B p.Arg1329Ter Pathogenic ★★ same type
- SETD1B p.Arg1703Ter Pathogenic/Likely pathogenic ★★ same type
- SETD1B p.Arg1748Cys Pathogenic/Likely pathogenic ★★ same type
- SETD1B p.Arg1792Gln Pathogenic/Likely pathogenic ★★ ⚠ same type
- SETD1B p.Arg1825Trp Likely pathogenic ★★ same type
- SETD1B p.Arg1902Cys Pathogenic/Likely pathogenic ★★ same type
- SETD1B p.Gln780Ter Pathogenic/Likely pathogenic ★★ same type
- SETD1B p.Glu1948Lys Pathogenic/Likely pathogenic ★★ 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/setd1b-p-ala666 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown