IFT54 p.Ser121=
c.363T>C · rs140265133 · VCV1113641
Likely benign
Multiple submitters
Classification
Likely benign
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
ultra-rare (popmax 0.0213%, 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 -5.1 | GERP -2.2 |
| Overall | ||
| CADD | 0.381 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0213%
African / African-American · 16/74,990 alleles
Filtering AF
0.0133%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.0109%
Overall
0.00161%
26/1,613,708 alleles · ultra-rare
exomes 13/1,461,526 · genomes 13/152,182 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| African / African-Americangrpmax | 0.0213% | 4,687 |
| Remaining individualsnot grpmax-eligible | 0.0096% | 10,415 |
| East Asian | 0.00891% | 11,218 |
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.Ser121=
- Coding
- c.363T>C
- MANE Select
- NM_015650
- dbSNP
- rs140265133
- Type
- single nucleotide variant
- Location
- chr2:238328694 (GRCh38)
- Structure
- AlphaFold pLDDT 61.95 · 2 PDB
- Residue 121
- the 'abolishes microtubules-binding when missing' region
Similar variants
- TRAF3IP1 p.Ser121Thr Uncertain significance ★ ⚠ same residue
- 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
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-ser121 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown