CDSN c.85+204A>C
Benign
Single submitter
Classification
Benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Common
common (popmax 82.9%, sas) — too common for a highly-penetrant pathogenic allele
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Splicing | ||
| Splice region | donor +204 | deep intronic (+204 nt into the intron) |
|---|---|---|
| SpliceAI | — | not assessed · no allele here is in the release |
| Constraint at this position | ||
| Conservation | phyloP -1.9 | |
| Overall | ||
| CADD | 0.496 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
82.9%
South Asian · 3,991/4,816 alleles
Filtering AF
81.6%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 81.3%
Overall
75.8%
115,178/151,992 alleles · common
| Ancestry group | Frequency | 1 in |
|---|---|---|
| South Asiangrpmax | 82.9% | 1 |
| East Asian | 82.7% | 1 |
| African / African-American | 82.3% | 1 |
| Ashkenazi Jewishnot grpmax-eligible | 82.3% | 1 |
| Middle Eastern | 78.9% | 1 |
| Remaining individualsnot grpmax-eligible | 74.6% | 1 |
| Admixed American | 73.4% | 1 |
| European (non-Finnish) | 73.1% | 1 |
| Amishnot grpmax-eligible | 66% | 2 |
| Finnishnot grpmax-eligible | 63.1% | 2 |
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
- CDSN
- Coding
- c.85+204A>C
- MANE Select
- NM_001264
- dbSNP
- rs3132547
- Type
- single nucleotide variant
- Location
- chr6:31120131 (GRCh38)
- Gene constraint
- LOEUF 0.77 · pLI 0.08 (gnomAD)
- Structure
- AlphaFold pLDDT 38.13
Similar variants
- CDSN p.Lys59Ter Pathogenic ★★ same type
- CDSN p.Cys423Ser Uncertain significance ★★ same type
- CDSN p.Gly335Ala Uncertain significance ★★ same type
- CDSN p.Pro226Ser Uncertain significance ★★ same type
- CDSN p.Pro282Thr Uncertain significance ★★ same type
- CDSN p.Pro447Leu Uncertain significance ★★ same type
- CDSN p.Pro471Leu Uncertain significance ★★ same type
- CDSN p.Ser159Gly Uncertain significance ★★ 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/cdsn-c-85-plus-204a-c (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown