NBAS p.Arg1995Gln
c.5984G>A · rs140373332 · VCV1081845
Computational evidence
| Protein change | ||
| AlphaMissense | 0.1853 | likely benign |
|---|---|---|
| REVEL | 0.298 | indeterminate |
| SaProt | LLR -6.27 | tolerated |
| ⇒ AlphaMissense and SaProt both call this tolerated; REVEL makes no call. | ||
| Splicing | ||
| SpliceAI | — | not assessed · no allele here is in the release |
| Constraint at this position | ||
| Conservation | phyloP 3.3 | GERP 2.3, phastCons 1 |
| Regional constraint | o/e 1.03 | unconstrained · MANE · 394 kb · p 0.09 · regional, not allelic |
| Overall | ||
| CADD | 27.4 | PHRED · no single calibrated threshold — expert panels disagree |
AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.
Population frequency
| Ancestry group | Frequency | 1 in |
|---|---|---|
| Ashkenazi Jewishnot grpmax-eligible | 0.534% | 187 |
| South Asiangrpmax | 0.112% | 893 |
| Remaining individualsnot grpmax-eligible | 0.064% | 1,563 |
| East Asian | 0.0312% | 3,206 |
| European (non-Finnish) | 0.0298% | 3,352 |
| Admixed American | 0.02% | 5,001 |
| Middle Eastern | 0.0165% | 6,062 |
| African / African-American | 0.00666% | 15,007 |
| Finnishnot grpmax-eligible | 0.00312% | 32,012 |
Ashkenazi Jewish shows a higher raw frequency than the grpmax group above it. gnomAD excludes bottlenecked groups — Finnish, Ashkenazi Jewish, Amish and “Remaining individuals” — from grpmax, because founder effects make their frequencies unrepresentative for filtering. The table is sorted by frequency, so an excluded group can sit above the grpmax row.
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.Arg1995Gln
- Coding
- c.5984G>A
- MANE Select
- NM_015909
- dbSNP
- rs140373332
- Type
- single nucleotide variant
- Location
- chr2:15234707 (GRCh38)
- Gene constraint
- LOEUF 0.761 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
- Structure
- AlphaFold pLDDT 74.42
- Residue 1995
- a UniProt-annotated variant site (in ilfs2; uncertain significance); a UniProt-annotated variant site (found in a patient with a multisystem disease involving liver, eye, immune system, connective tissue and bone; uncertain significance); a UniProt-annotated variant site (found in a patient with a multisystem disease involving liver, eye, immune system, connective tissue and bone; uncertain significance; reduced protein expression levels in fibroblasts); a UniProt-annotated variant site (found in a patient with a multisystem disease involving liver, eye, immune system, connective tissue and bone; uncertain significance; reduced collagen secretion; diffuse collagen bundles; reduced protein expression in fibroblasts); the 'interaction with zw10 and rint1' region
Similar variants
- NBAS p.Arg1995Ter Pathogenic/Likely pathogenic ★★ same residue
- NBAS p.Arg1995Gly Conflicting classifications of pathogenicity ★ same residue
- 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
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-arg1995gln (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown