IFT54 p.Asp181=
c.543T>C · rs749548477 · VCV2968412
Likely benign
Multiple submitters
Classification
Likely benign
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
very rare (popmax 0.00488%, eas)
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 -2.1 | GERP -2.4 |
| Overall | ||
| CADD | 1.28 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.00488%
East Asian · 2/40,970 alleles
Filtering AF
0.000809%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.000303%
Overall
0.000451%
7/1,551,776 alleles · very rare
exomes 7/1,401,184 · genomes 0/150,592 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| East Asiangrpmax | 0.00488% | 20,485 |
| Remaining individualsnot grpmax-eligible | 0.00166% | 60,178 |
| European (non-Finnish) | 0.000348% | 287,068 |
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
- IFT54
- Protein
- p.Asp181=
- Coding
- c.543T>C
- MANE Select
- NM_015650
- dbSNP
- rs749548477
- Type
- single nucleotide variant
- Location
- chr2:238328970 (GRCh38)
- Structure
- AlphaFold pLDDT 61.95 · 2 PDB
- Residue 181
- the 'abolishes microtubules-binding when missing' region; the 'disordered' region
Similar variants
- IFT54 c.1159+1G>C Likely pathogenic ★★ same type
- IFT54 c.988-1G>A Likely pathogenic ★★ same type
- IFT54 c.988-1G>C Likely pathogenic ★★ same type
- IFT54 p.Arg565Ter Pathogenic/Likely pathogenic ★★ same type
- IFT54 p.Trp572Ter Pathogenic/Likely pathogenic ★★ same type
- IFT54 c.1452-5T>G Uncertain significance ★★ same type
- IFT54 c.1910+3G>T Uncertain significance ★★ same type
- IFT54 p.Ala513Val 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/ift54-p-asp181 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown