CD55 p.Thr328=
c.984A>G · rs772345819 · VCV799515
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
very rare (popmax 0.00167%, amr)
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 -0.33 | GERP -2.8 |
| Overall | ||
| CADD | 1.133 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.00167%
Admixed American · 1/59,964 alleles
Overall
0.000138%
2/1,449,774 alleles · very rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Admixed Americangrpmax | 0.00167% | 59,964 |
| African / African-American | 0.00134% | 74,794 |
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.Thr328=
- Coding
- c.984A>G
- MANE Select
- NM_000574
- dbSNP
- rs772345819
- Type
- single nucleotide variant
- Location
- chr1:207337333 (GRCh38)
- Gene constraint
- LOEUF 1.234 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 78.99 · 33 PDB
- Residue 328
- the 'disordered' region
Similar variants
- CD55 p.Thr328Ala 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
- CD55 p.Arg357Cys 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-thr328 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown