AICDA p.Ile65=
c.195C>T · rs371803016 · VCV1134414
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
ultra-rare (popmax 0.0171%, nfe)
Conditions
1
hyper-IgM syndrome type 2
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| REVEL | 0.243 | benign-leaning |
|---|---|---|
| Splicing | ||
| SpliceAI | — | not assessed · no allele here is in the release |
| Constraint at this position | ||
| Conservation | phyloP 2.9 | GERP 0.81, phastCons 1 |
| Overall | ||
| CADD | 9.235 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0171%
European (non-Finnish) · 202/1,180,050 alleles
Filtering AF
0.0152%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.0144%
Overall
0.0128%
206/1,614,152 alleles · ultra-rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| European (non-Finnish)grpmax | 0.0171% | 5,842 |
| Remaining individualsnot grpmax-eligible | 0.0048% | 20,830 |
| African / African-American | 0.00133% | 74,954 |
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
- AICDA
- Protein
- p.Ile65=
- Coding
- c.195C>T
- MANE Select
- NM_020661
- dbSNP
- rs371803016
- Type
- single nucleotide variant
- Location
- chr12:8605447 (GRCh38)
- Gene constraint
- LOEUF 1.144 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
- Structure
- AlphaFold pLDDT 88.43 · 5 PDB
- Residue 65
- the cmp/dcmp-type deaminase domain; an α-helix
Similar variants
- AICDA p.Arg112Cys Pathogenic ★★ same condition
- AICDA p.Arg190Ter Pathogenic/Likely pathogenic ★★ same condition
- AICDA p.Arg24Trp Pathogenic ★★ same condition
- AICDA p.Arg92Ter Pathogenic/Likely pathogenic ★★ same condition
- AICDA p.Arg99Ter Pathogenic/Likely pathogenic ★★ same condition
- AICDA p.Cys147Ter Pathogenic ★★ same condition
- AICDA p.Cys87Arg Pathogenic/Likely pathogenic ★★ ⚠ same condition
- AICDA p.Cys87Ser 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/aicda-p-ile65 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown