IMPG2 p.Arg1078=
c.3234G>A · rs1553680151 · VCV2022715
Uncertain significance
Single submitter
Classification
Uncertain significance
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Absent
absent from gnomAD v4.1
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation/SpliceAI carries the signal. | ||
| Splicing | ||
| SpliceAI | Δ0.29 | acceptor loss · deltas |
|---|---|---|
| Pangolin | Δ0.32 | loss · gain 0.01 · agrees with SpliceAI · independent |
| Constraint at this position | ||
| Conservation | phyloP -0.012 | GERP -2.1, phastCons 0.92 |
| Overall | ||
| CADD | 5.507 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.
Variant & gene context
- Gene
- IMPG2
- Protein
- p.Arg1078=
- Coding
- c.3234G>A
- MANE Select
- NM_016247
- dbSNP
- rs1553680151
- Type
- single nucleotide variant
- Location
- chr3:101231145 (GRCh38)
- Gene constraint
- LOEUF 0.773 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 54.28
- Residue 1078
- a UniProt-annotated variant site (in rp56); a UniProt-annotated variant site (in vmd5); the egf-like 2 domain
Similar variants
- IMPG2 p.Arg1078Ser Uncertain significance ★★ ⚠ same residue
- IMPG2 p.Arg1078Lys Uncertain significance ★ ⚠ same residue
- IMPG2 c.1240-1G>A Likely pathogenic ★★ same type
- IMPG2 c.1240-2A>G Pathogenic/Likely pathogenic ★★ same type
- IMPG2 c.502-2A>G Likely pathogenic ★★ same type
- IMPG2 c.583+1G>C Pathogenic/Likely pathogenic ★★ same type
- IMPG2 c.667-1G>A Pathogenic/Likely pathogenic ★★ same type
- IMPG2 c.828+1G>A Pathogenic/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/impg2-p-arg1078 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown