CSF2RB p.Ala398=
c.1194C>T · rs199780194 · VCV794150
Benign/Likely benign
Multiple submitters
Classification
Benign/Likely benign
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 3 submitters
gnomAD v4.1
Rare
rare (popmax 0.227%, eas)
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 -8.8 | GERP -2.9 |
| Overall | ||
| CADD | 1.41 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.227%
East Asian · 102/44,866 alleles
Filtering AF
0.192%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.178%
Overall
0.00807%
130/1,610,774 alleles · rare
exomes 118/1,458,520 · genomes 12/152,254 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| East Asiangrpmax | 0.227% | 440 |
| Remaining individualsnot grpmax-eligible | 0.00801% | 12,492 |
| South Asian | 0.0033% | 30,339 |
| Admixed American | 0.00167% | 59,974 |
| European (non-Finnish) | 0.00161% | 62,102 |
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
- CSF2RB
- Protein
- p.Ala398=
- Coding
- c.1194C>T
- MANE Select
- NM_000395
- dbSNP
- rs199780194
- Type
- single nucleotide variant
- Location
- chr22:36933873 (GRCh38)
- Gene constraint
- LOEUF 0.511 · pLI 0.93 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
- Structure
- AlphaFold pLDDT 65.50 · 10 PDB
- Residue 398
- the fibronectin type-iii 2 domain; a β-strand
Similar variants
- CSF2RB p.Ala398Ser Uncertain significance ★ ⚠ same residue
- CSF2RB p.Ala185Thr Uncertain significance ★★ ⚠ same type
- CSF2RB p.Ala255Thr Uncertain significance ★★ ⚠ same type
- CSF2RB p.Ala314Thr Uncertain significance ★★ ⚠ same type
- CSF2RB p.Ala314Val Uncertain significance ★★ ⚠ same type
- CSF2RB p.Ala394Thr Uncertain significance ★★ ⚠ same type
- CSF2RB p.Ala455Thr Uncertain significance ★★ ⚠ same type
- CSF2RB p.Ala576Thr Uncertain significance ★★ ⚠ 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/csf2rb-p-ala398 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown