CSPP1 p.Arg308Gly
c.922A>G · rs1812610146 · VCV2499364
Uncertain significance
Single submitter
Classification
Uncertain significance
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
very rare (popmax 0.00121%, sas)
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation/SpliceAI carries the signal. | ||
| REVEL | 0.264 | benign-leaning |
|---|---|---|
| Splicing | ||
| SpliceAI | Δ0.42 | donor loss · deltas |
| Pangolin | Δ0.37 | loss · gain 0.00 · agrees with SpliceAI · independent |
| Constraint at this position | ||
| Conservation | phyloP 11 | GERP 1.9, phastCons 1 |
| Regional constraint | o/e 0.96 | unconstrained · MANE · 121 kb · p 0.15 · regional, not allelic |
| Overall | ||
| CADD | 31.0 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.00121%
South Asian · 1/82,470 alleles
Overall
0.000657%
1/152,220 alleles · very rare
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
- CSPP1
- Protein
- p.Arg308Gly
- Coding
- c.922A>G
- MANE Select
- NM_001382391
- dbSNP
- rs1812610146
- Type
- single nucleotide variant
- Location
- chr8:67095731 (GRCh38)
- Gene constraint
- LOEUF 0.876 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
- Structure
- AlphaFold pLDDT 57.34
Similar variants
- CSPP1 p.Arg308Lys Uncertain significance ★ same residue
- CSPP1 c.1022+1G>T Likely pathogenic ★★ same type
- CSPP1 c.1187+1G>A Pathogenic/Likely pathogenic ★★ same type
- CSPP1 c.1497-2A>C Likely pathogenic ★★ same type
- CSPP1 c.1697+1G>T Pathogenic/Likely pathogenic ★★ same type
- CSPP1 c.2968+1G>A Pathogenic ★★ same type
- CSPP1 c.2968+1G>T Pathogenic ★★ same type
- CSPP1 c.923+1G>C 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/cspp1-p-arg308gly (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown