CDT1 p.Ala167=
c.501G>A · rs773995919 · VCV1951266
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
very rare (popmax 0.004%, 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 -3.1 |
| Overall | ||
| CADD | 0.255 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.004%
African / African-American · 3/74,928 alleles
Filtering AF
0.00106%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.000495%
Overall
0.00105%
17/1,612,502 alleles · very rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| African / African-Americangrpmax | 0.004% | 24,976 |
| Ashkenazi Jewishnot grpmax-eligible | 0.00338% | 29,588 |
| South Asian | 0.00329% | 30,361 |
| European (non-Finnish) | 0.000848% | 117,991 |
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.Ala167=
- Coding
- c.501G>A
- MANE Select
- NM_030928
- dbSNP
- rs773995919
- Type
- single nucleotide variant
- Location
- chr16:88805452 (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 167
- the 'interaction with gmnn' region
Similar variants
- CDT1 p.Ala167Thr 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.Ala217Val Uncertain significance ★★ ⚠ same type
- CDT1 p.Ala414Ser Uncertain significance ★★ ⚠ same type
- CDT1 p.Ala431Thr 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-ala167 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown