CDK13 p.Ser226=
c.678C>T · VCV3677913
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
very rare (popmax 0.00329%, 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 0.96 | GERP 0.57, phastCons 1 |
| Overall | ||
| CADD | 12.78 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.00329%
Admixed American · 1/30,358 alleles
Filtering AF
8.6e-05%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 5.8e-05%
Overall
0.000568%
8/1,407,858 alleles · very rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Admixed Americangrpmax | 0.00329% | 30,358 |
| Remaining individualsnot grpmax-eligible | 0.00185% | 54,054 |
| South Asian | 0.00153% | 65,164 |
| African / African-American | 0.00151% | 66,072 |
| European (non-Finnish) | 0.000367% | 272,743 |
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
- CDK13
- Protein
- p.Ser226=
- Coding
- c.678C>T
- MANE Select
- NM_003718
- Type
- single nucleotide variant
- Location
- chr7:39951319 (GRCh38)
- Gene constraint
- LOEUF 0.434 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
- Structure
- AlphaFold pLDDT 50.59 · 2 PDB
- Residue 226
- the 'disordered' region
Similar variants
- CDK13 p.Ala732Thr Likely pathogenic ★★ same type
- CDK13 p.Arg1025Ter Pathogenic/Likely pathogenic ★★ same type
- CDK13 p.Arg737Cys Pathogenic ★★ same type
- CDK13 p.Arg751Gln Pathogenic/Likely pathogenic ★★ same type
- CDK13 p.Arg860Gln Pathogenic/Likely pathogenic ★★ same type
- CDK13 p.Arg880Cys Pathogenic/Likely pathogenic ★★ same type
- CDK13 p.Asn842Asp Pathogenic/Likely pathogenic ★★ same type
- CDK13 p.Asn842Ser 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/cdk13-p-ser226 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown