CD55 p.Pro6=
c.18G>A · rs922742365 · VCV1568477
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
very rare (popmax 0.00842%, afr)
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 0.66 | GERP -2.5 |
| Overall | ||
| CADD | 10.21 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.00842%
African / African-American · 6/71,246 alleles
Filtering AF
0.00362%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.00248%
Overall
0.000723%
11/1,521,010 alleles · very rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| African / African-Americangrpmax | 0.00842% | 11,874 |
| East Asian | 0.00504% | 19,850 |
| Remaining individualsnot grpmax-eligible | 0.00169% | 59,174 |
| South Asian | 0.00121% | 82,740 |
| European (non-Finnish) | 8.77e-05% | 1,140,622 |
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
- CD55
- Protein
- p.Pro6=
- Coding
- c.18G>A
- MANE Select
- NM_000574
- dbSNP
- rs922742365
- Type
- single nucleotide variant
- Location
- chr1:207321783 (GRCh38)
- Gene constraint
- LOEUF 1.234 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 78.99 · 33 PDB
Similar variants
- CD55 p.Pro6Gln Uncertain significance ★ ⚠ same residue
- CD55 p.Pro6Thr Uncertain significance ★ same residue
- CD55 c.286+1G>A Likely pathogenic ★★ same type
- CD55 c.286+2T>G Likely pathogenic ★★ same type
- CD55 p.Glu50Ter Pathogenic/Likely pathogenic ★★ same type
- CD55 p.Trp213Ter Pathogenic/Likely pathogenic ★★ same type
- CD55 c.1081+1G>C Uncertain significance ★★ same type
- CD55 p.Arg221Ser 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/cd55-p-pro6 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown