CSPP1 p.His246=
c.738T>C · rs773951141 · VCV1609486
Likely benign
Multiple submitters
Classification
Likely benign
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
ultra-rare (popmax 0.0357%, eas)
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 -0.55 | GERP -1, phastCons 0.097 |
| Overall | ||
| CADD | 3.949 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0357%
East Asian · 16/44,838 alleles
Filtering AF
0.0223%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.0182%
Overall
0.000992%
16/1,613,634 alleles · ultra-rare
exomes 14/1,461,742 · genomes 2/151,892 · joint denominator
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.His246=
- Coding
- c.738T>C
- MANE Select
- NM_001382391
- dbSNP
- rs773951141
- Type
- single nucleotide variant
- Location
- chr8:67095547 (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 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
- CSPP1 c.923+1G>C Pathogenic ★★ same condition
- CSPP1 c.-69C>T Pathogenic/Likely 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-his246 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown