CSPP1 p.Arg772=
c.2316G>A · rs1827105533 · VCV1113865
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
very rare (popmax 0.00288%, nfe)
Conditions
1
Joubert syndrome 21
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 0.18 | GERP -3.3, phastCons 0.85 |
| Overall | ||
| CADD | 8.096 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.00288%
European (non-Finnish) · 34/1,179,236 alleles
Filtering AF
0.00208%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.00183%
Overall
0.00233%
34/1,460,636 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.Arg772=
- Coding
- c.2316G>A
- MANE Select
- NM_001382391
- dbSNP
- rs1827105533
- Type
- single nucleotide variant
- Location
- chr8:67158521 (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.Arg772Trp Uncertain significance ★★ same residue
- CSPP1 p.Arg772Gln Uncertain significance ★ same residue
- CSPP1 c.1022+1G>T Likely pathogenic ★★ same condition
- CSPP1 c.1187+1G>A Pathogenic/Likely pathogenic ★★ same condition
- CSPP1 c.1497-2A>C Likely pathogenic ★★ same condition
- CSPP1 c.1697+1G>T Pathogenic/Likely pathogenic ★★ same condition
- CSPP1 c.2968+1G>A Pathogenic ★★ same condition
- CSPP1 c.2968+1G>T Pathogenic ★★ same condition
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-arg772 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown