CBS c.*27C>T
Benign
Single submitter
Classification
Benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Absent
absent from gnomAD v4.1
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 -0.41 | GERP -1.5 |
| Overall | ||
| CADD | 3.907 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.
Variant & gene context
- Gene
- CBS
- Coding
- c.*27C>T
- MANE Select
- NM_000071
- dbSNP
- rs55646248
- Type
- single nucleotide variant
- Location
- chr21:43053853 (GRCh38)
- Structure
- AlphaFold pLDDT 90.15 · 28 PDB
Similar variants
- CBS c.1145+1G>A Pathogenic/Likely pathogenic ★★ same type
- CBS c.1223+1G>T Pathogenic ★★ same type
- CBS c.1224-2A>C Pathogenic ★★ same type
- CBS c.1358+1G>A Pathogenic ★★ same type
- CBS c.1359-1G>C Pathogenic/Likely pathogenic ★★ same type
- CBS c.1468-1G>A Likely pathogenic ★★ same type
- CBS c.1552+1G>A Pathogenic/Likely pathogenic ★★ same type
- CBS c.209+1G>A 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/cbs-c-star-27c-t (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown