CBL p.Thr309=
c.927T>C · rs760852406 · VCV1990977
Likely benign
Multiple submitters
Classification
Likely benign
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
very rare (popmax 0.0022%, sas)
Conditions
1
RASopathy
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 -0.067 | GERP -2.2, phastCons 0.89 |
| Overall | ||
| CADD | 8.672 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0022%
South Asian · 2/91,076 alleles
Filtering AF
0.000365%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.000137%
Overall
0.000205%
3/1,461,418 alleles · very rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| South Asiangrpmax | 0.0022% | 45,538 |
| African / African-American | 0.00133% | 75,046 |
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
- CBL
- Protein
- p.Thr309=
- Coding
- c.927T>C
- MANE Select
- NM_005188
- dbSNP
- rs760852406
- Type
- single nucleotide variant
- Location
- chr11:119276054 (GRCh38)
- Gene constraint
- LOEUF 0.622 · pLI <0.01 · ClinGen HI 0/3 (gnomAD)
- Structure
- AlphaFold pLDDT 64.27 · 34 PDB
- Residue 309
- the cbl-ptb domain; the 'sufficient for interaction with ephb1' region; the 'sh2-like' region
Similar variants
- CBL p.Thr309Ile Uncertain significance ★ ⚠ same residue
- CBL c.1096-1G>C Pathogenic/Likely pathogenic ★★ same condition
- CBL c.1096-1G>T Pathogenic ★★ same condition
- CBL c.1228-2A>G Pathogenic/Likely pathogenic ★★ same condition
- CBL p.Arg420Gln Pathogenic/Likely pathogenic ★★ same condition
- CBL p.Arg420Leu Likely pathogenic ★★ same condition
- CBL p.Gln367Arg Likely pathogenic ★★ same condition
- CBL p.Gln367Pro 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/cbl-p-thr309 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown