IFT74 p.Gln447=
c.1341A>G · rs764366835 · VCV1657145
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.0169%, mid)
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 -0.92 | GERP -4.5 |
| Overall | ||
| CADD | 0.14 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0169%
Middle Eastern · 1/5,912 alleles
Filtering AF
0.00371%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.00333%
Overall
0.00432%
68/1,574,078 alleles · ultra-rare
exomes 65/1,421,948 · genomes 3/152,130 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Middle Easterngrpmax | 0.0169% | 5,912 |
| African / African-American | 0.0083% | 12,043 |
| European (non-Finnish) | 0.00472% | 21,202 |
| East Asian | 0.00469% | 21,306 |
| Remaining individualsnot grpmax-eligible | 0.00329% | 30,415 |
| Admixed American | 0.002% | 50,032 |
| South Asian | 0.00121% | 82,974 |
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
- IFT74
- Protein
- p.Gln447=
- Coding
- c.1341A>G
- MANE Select
- NM_025103
- dbSNP
- rs764366835
- Type
- single nucleotide variant
- Location
- chr9:27055616 (GRCh38)
- Gene constraint
- LOEUF 1.508 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 81.21
- Residue 447
- a UniProt-annotated variant site (in jbts40)
Similar variants
- IFT74 p.Gln447His Uncertain significance ★ ⚠ same residue
- IFT74 c.1685-1G>T Pathogenic/Likely pathogenic ★★ same type
- IFT74 p.Gln179Glu Pathogenic/Likely pathogenic ★★ ⚠ same type
- IFT74 p.Glu120Ter Pathogenic/Likely pathogenic ★★ same type
- IFT74 p.Glu285Ter Pathogenic/Likely pathogenic ★★ same type
- IFT74 p.Ala196Val Uncertain significance ★★ ⚠ same type
- IFT74 p.Ala558Val Uncertain significance ★★ ⚠ same type
- IFT74 p.Arg182Gln 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/ift74-p-gln447 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown