NBAS p.Asp291=
c.873C>T · rs939165758 · VCV1595450
Likely benign
Multiple submitters
Classification
Likely benign
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
very rare (popmax 0.005%, 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 1.3 | GERP -1.8, phastCons 0.76 |
| Overall | ||
| CADD | 9.602 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.005%
Admixed American · 3/59,980 alleles
Filtering AF
0.00133%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.00104%
Overall
0.00186%
30/1,613,840 alleles · very rare
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Admixed Americangrpmax | 0.005% | 19,993 |
| Remaining individualsnot grpmax-eligible | 0.0032% | 31,240 |
| African / African-American | 0.00267% | 37,433 |
| European (non-Finnish) | 0.00186% | 53,635 |
| South Asian | 0.0011% | 91,080 |
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
- NBAS
- Protein
- p.Asp291=
- Coding
- c.873C>T
- MANE Select
- NM_015909
- dbSNP
- rs939165758
- Type
- single nucleotide variant
- Location
- chr2:15511224 (GRCh38)
- Gene constraint
- LOEUF 0.761 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
- Structure
- AlphaFold pLDDT 74.42
- Residue 291
- a UniProt-annotated variant site (in ilfs2; uncertain significance); the 'interaction with use1' region
Similar variants
- NBAS c.1726-2A>G Likely pathogenic ★★ same type
- NBAS c.173-2A>G Likely pathogenic ★★ same type
- NBAS c.209+2T>G Pathogenic/Likely pathogenic ★★ same type
- NBAS c.2423+404G>C Likely pathogenic ★★ same type
- NBAS c.335+1G>C Pathogenic/Likely pathogenic ★★ same type
- NBAS c.4461+2T>C Likely pathogenic ★★ same type
- NBAS c.4583-2A>G Likely pathogenic ★★ same type
- NBAS c.513+2T>C 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/nbas-p-asp291 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown