IFT122 p.Ala62=
c.186G>A · rs755254772 · VCV2739839
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.01%, amr)
Conditions
1
cranioectodermal dysplasia 1
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| REVEL | 0.063 | moderately benign-leaning |
|---|---|---|
| Splicing | ||
| SpliceAI | <0.2 | no splice effect predicted · four deltas, not one · how we know |
| Constraint at this position | ||
| Conservation | phyloP -6.6 | GERP -3.5 |
| Overall | ||
| CADD | 3.468 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.01%
Admixed American · 6/59,998 alleles
Filtering AF
0.00428%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.00295%
Overall
0.00223%
36/1,612,676 alleles · ultra-rare
exomes 33/1,460,480 · genomes 3/152,196 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Admixed Americangrpmax | 0.01% | 10,000 |
| East Asian | 0.00446% | 22,436 |
| Remaining individualsnot grpmax-eligible | 0.0032% | 31,224 |
| European (non-Finnish) | 0.00204% | 49,119 |
| African / African-American | 0.00134% | 74,874 |
| South Asian | 0.0011% | 91,062 |
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
- IFT122
- Protein
- p.Ala62=
- Coding
- c.186G>A
- MANE Select
- NM_052989
- dbSNP
- rs755254772
- Type
- single nucleotide variant
- Location
- chr3:129451991 (GRCh38)
- Gene constraint
- LOEUF 0.811 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 82.91 · 5 PDB
Similar variants
- IFT122 p.Ala62Val Uncertain significance ★ ⚠ same residue
- IFT122 c.1148-1G>C Pathogenic/Likely pathogenic ★★ same condition
- IFT122 c.272+1G>A Likely pathogenic ★★ same condition
- IFT122 c.273-257C>A Pathogenic/Likely pathogenic ★★ same condition
- IFT122 c.3265+1G>A Pathogenic/Likely pathogenic ★★ same condition
- IFT122 p.Arg1185Ter Pathogenic/Likely pathogenic ★★ same condition
- IFT122 p.Arg189Ter Pathogenic/Likely pathogenic ★★ same condition
- IFT122 p.Arg673Ter 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/ift122-p-ala62 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown