CLCNKB p.Ser121=
c.363T>C · rs1352919481 · VCV1959622
Likely benign
Multiple submitters
Classification
Likely benign
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
very rare (popmax 0.000932%, nfe)
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Splicing | ||
| SpliceAI | <0.2 | all four deltas below 0.2 · T>A here scores Δ0.37 · evaluated, not missing |
|---|---|---|
| Constraint at this position | ||
| Conservation | phyloP -1.4 | GERP -1.8, phastCons 0.002 |
| Overall | ||
| CADD | 4.219 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.000932%
European (non-Finnish) · 11/1,180,024 alleles
Filtering AF
0.0005%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.000366%
Overall
0.000753%
11/1,461,382 alleles · very rare
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
- CLCNKB
- Protein
- p.Ser121=
- Coding
- c.363T>C
- MANE Select
- NM_000085
- dbSNP
- rs1352919481
- Type
- single nucleotide variant
- Location
- chr1:16047909 (GRCh38)
- Gene constraint
- LOEUF 1.072 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
- Structure
- AlphaFold pLDDT 87.16
- Residue 121
- a binding site
Similar variants
- CLCNKB p.Ser121Phe Uncertain significance ★ ⚠ same residue
- CLCNKB c.968+1G>A Pathogenic/Likely pathogenic ★★ same type
- CLCNKB p.Ala204Thr Pathogenic/Likely pathogenic ★★ same type
- CLCNKB p.Ala77Pro Pathogenic/Likely pathogenic ★★ same type
- CLCNKB p.Arg304Ter Pathogenic/Likely pathogenic ★★ same type
- CLCNKB p.Arg438His Pathogenic ★★ same type
- CLCNKB p.Arg595Ter Pathogenic ★★ same type
- CLCNKB p.Arg76Ter 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/clcnkb-p-ser121 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown