C2CD3 c.3517+8A>C
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.0482%, afr)
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Splicing | ||
| Splice region | donor +8 | near-intronic (+8 nt from the splice site) |
|---|---|---|
| SpliceAI | — | not assessed · no allele here is in the release |
| Constraint at this position | ||
| Conservation | phyloP 0.79 | GERP 1.7, phastCons 0.63 |
| Non-coding constraint | Z 1.25 | 1 kb window · o/e 0.89 · regional · uncalibrated |
| Overall | ||
| CADD | 5.568 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0482%
African / African-American · 36/74,628 alleles
Filtering AF
0.0358%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.0315%
Overall
0.0023%
37/1,610,662 alleles · ultra-rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| African / African-Americangrpmax | 0.0482% | 2,073 |
| Admixed American | 0.00169% | 59,340 |
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
- C2CD3
- Coding
- c.3517+8A>C
- MANE Select
- NM_001286577
- dbSNP
- rs745326206
- Type
- single nucleotide variant
- Location
- chr11:74092408 (GRCh38)
- Gene constraint
- LOEUF 0.637 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 55.65
Similar variants
- C2CD3 c.3911-2A>T Pathogenic/Likely pathogenic ★★ same type
- C2CD3 p.Arg621Ter Pathogenic/Likely pathogenic ★★ same type
- C2CD3 p.Arg666Ter Pathogenic ★★ same type
- C2CD3 p.Arg768Ter Pathogenic/Likely pathogenic ★★ same type
- C2CD3 p.Tyr173Ter Pathogenic/Likely pathogenic ★★ same type
- C2CD3 c.2085+5G>A Uncertain significance ★★ same type
- C2CD3 c.4951+6C>T Uncertain significance ★★ same type
- C2CD3 c.5495+4A>G 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/c2cd3-c-3517-plus-8a-c (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown