COL4A4 p.Gln468=
c.1404A>G · rs774673142 · VCV1624929
Conflicting classifications of pathogenicity
Conflicting submitters
Classification
Conflicting classifications of pathogenicity
ClinVar
Review
Conflicting submitters ★☆☆☆
ClinVar · 3 submitters
gnomAD v4.1
Rare
very rare (popmax 0.0011%, sas)
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation/SpliceAI carries the signal. | ||
| Splicing | ||
| SpliceAI | Δ0.50 | acceptor loss · deltas |
|---|---|---|
| Pangolin | Δ0.28 | loss · gain 0.01 · agrees with SpliceAI · independent |
| Constraint at this position | ||
| Conservation | phyloP 0.57 | GERP -3.4, phastCons 0.34 |
| Overall | ||
| CADD | 0.183 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0011%
South Asian · 1/91,058 alleles
Filtering AF
6.8e-05%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 1.9e-05%
Overall
0.000274%
4/1,461,534 alleles · very rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| South Asiangrpmax | 0.0011% | 91,058 |
| European (non-Finnish) | 0.000254% | 393,249 |
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
- COL4A4
- Protein
- p.Gln468=
- Coding
- c.1404A>G
- MANE Select
- NM_000092
- dbSNP
- rs774673142
- Type
- single nucleotide variant
- Location
- chr2:227089923 (GRCh38)
- Gene constraint
- LOEUF 0.607 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 49.03 · 2 PDB
- Residue 468
- the 'triple-helical region' region
Similar variants
- COL4A4 p.Gln468Ter Pathogenic/Likely pathogenic ★★ same residue
- COL4A4 c.1030-2A>C Likely pathogenic ★★ same type
- COL4A4 c.1099+1G>A Pathogenic ★★ same type
- COL4A4 c.1099+1G>T Pathogenic/Likely pathogenic ★★ same type
- COL4A4 c.1369+1G>A Pathogenic/Likely pathogenic ★★ same type
- COL4A4 c.1370-2A>C Likely pathogenic ★★ same type
- COL4A4 c.1459+1G>A Pathogenic ★★ same type
- COL4A4 c.1623+5G>T Likely pathogenic ★★ 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/col4a4-p-gln468 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown