SLC19A2 p.Ala421=
c.1263C>T · rs778218161 · VCV2983486
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
very rare (popmax 0.00331%, nfe)
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 1 | GERP -1.4, phastCons 1 |
| Overall | ||
| CADD | 8.372 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.00331%
European (non-Finnish) · 39/1,179,778 alleles
Filtering AF
0.00247%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.00217%
Overall
0.00242%
39/1,613,456 alleles · very rare
exomes 37/1,461,606 · genomes 2/151,850 · joint denominator
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
- SLC19A2
- Protein
- p.Ala421=
- Coding
- c.1263C>T
- MANE Select
- NM_006996
- dbSNP
- rs778218161
- Type
- single nucleotide variant
- Location
- chr1:169468213 (GRCh38)
- Gene constraint
- LOEUF 0.852 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 80.99 · 2 PDB
- Residue 421
- an α-helix
Similar variants
- SLC19A2 c.1223+1G>A Pathogenic ★★ same type
- SLC19A2 c.807+2T>G Likely pathogenic ★★ same type
- SLC19A2 p.Arg162Ter Pathogenic ★★ same type
- SLC19A2 p.Arg397Ter Pathogenic/Likely pathogenic ★★ same type
- SLC19A2 p.Gln233Ter Pathogenic ★★ same type
- SLC19A2 p.Glu66Ter Pathogenic ★★ same type
- SLC19A2 p.Gly105Glu Pathogenic/Likely pathogenic ★★ same type
- SLC19A2 p.Gly172Asp Pathogenic/Likely pathogenic ★★ 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/slc19a2-p-ala421 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown