CDT1 p.Ala155=
c.465C>T · rs202089169 · VCV788312
Benign/Likely benign
Multiple submitters
Classification
Benign/Likely benign
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 4 submitters
gnomAD v4.1
Rare
low-frequency (popmax 1.34%, afr)
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 -5.6 | GERP -2.6 |
| Overall | ||
| CADD | 0.554 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
1.34%
African / African-American · 1,003/74,588 alleles
Filtering AF
1.28%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 1.25%
Overall
0.0695%
1,108/1,593,326 alleles · low-frequency
| Ancestry group | Frequency | 1 in |
|---|---|---|
| African / African-Americangrpmax | 1.34% | 74 |
| Admixed American | 0.0891% | 1,122 |
| Remaining individualsnot grpmax-eligible | 0.0664% | 1,506 |
| Middle Eastern | 0.0166% | 6,012 |
| European (non-Finnish) | 0.00102% | 97,708 |
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
- CDT1
- Protein
- p.Ala155=
- Coding
- c.465C>T
- MANE Select
- NM_030928
- dbSNP
- rs202089169
- Type
- single nucleotide variant
- Location
- chr16:88804875 (GRCh38)
- Gene constraint
- LOEUF 1.737 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
- Structure
- AlphaFold pLDDT 74.51 · 6 PDB
- Residue 155
- the 'disordered' region; the 'interaction with gmnn' region
Similar variants
- CDT1 p.Ala155Thr Uncertain significance ★ ⚠ same residue
- CDT1 c.832+1G>A Pathogenic/Likely pathogenic ★★ same type
- CDT1 p.Arg462Gln Pathogenic/Likely pathogenic ★★ ⚠ same type
- CDT1 p.Ala11Val Uncertain significance ★★ ⚠ same type
- CDT1 p.Ala144Ser Uncertain significance ★★ ⚠ same type
- CDT1 p.Ala167Thr Uncertain significance ★★ ⚠ same type
- CDT1 p.Ala217Val Uncertain significance ★★ ⚠ same type
- CDT1 p.Ala414Ser 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/cdt1-p-ala155 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown