LARGE1 p.Ile142=
c.426T>C · rs745996591 · VCV772782
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
very rare (popmax 0.005%, amr)
Conditions
1
muscular dystrophy-dystroglycanopathy type B6
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 -0.68 | GERP -3.9 |
| Overall | ||
| CADD | 3.11 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.005%
Admixed American · 3/60,022 alleles
Filtering AF
0.00133%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.000668%
Overall
0.000248%
4/1,614,062 alleles · very rare
exomes 4/1,461,758 · genomes 0/152,304 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Admixed Americangrpmax | 0.005% | 20,007 |
| European (non-Finnish) | 8.48e-05% | 1,179,940 |
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
- LARGE1
- Protein
- p.Ile142=
- Coding
- c.426T>C
- MANE Select
- NM_133642
- dbSNP
- rs745996591
- Type
- single nucleotide variant
- Location
- chr22:33626309 (GRCh38)
- Gene constraint
- LOEUF 0.606 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
- Structure
- AlphaFold pLDDT 86.15 · 4 PDB
- Residue 142
- a β-strand; the 'xylosyltransferase activity' region
Similar variants
- LARGE1 p.Ile142Val Uncertain significance ★★ ⚠ same residue
- LARGE1 p.Arg95Ter Pathogenic ★★ same condition
- LARGE1 p.Glu509Lys Pathogenic/Likely pathogenic ★★ same condition
- LARGE1 c.*155C>T Uncertain significance ★★ same condition
- LARGE1 p.Ala149Ser Uncertain significance ★★ ⚠ same condition
- LARGE1 p.Ala252Val Uncertain significance ★★ ⚠ same condition
- LARGE1 p.Ala478Thr Uncertain significance ★★ ⚠ same condition
- LARGE1 p.Ala635Thr Uncertain significance ★★ ⚠ 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/large1-p-ile142 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown