Is DBN1 p.Ala455Val (c.1364C>T) pathogenic?

DBN1 p.Ala455Val (c.1364C>T) is classified Uncertain significance in DBN1 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-08-04). AlphaMissense: likely benign (0.0643); Ultra-rare (popmax 0.0107%, afr).

How common is DBN1 p.Ala455Val (c.1364C>T) in the general population?

DBN1 p.Ala455Val (c.1364C>T) is ultra-rare (popmax 0.0107%, afr) (gnomAD).

What do computational predictors say about DBN1 p.Ala455Val (c.1364C>T)?

AlphaMissense predicts likely benign (score 0.0643) — an in-silico prediction, not a clinical call.

DBN1 p.Ala455Val

c.1364C>T · VCV4237721

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0643 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0107%, afr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.0643	likely benign
REVEL	0.018	moderately benign-leaning
SaProt	LLR -7.33	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 0.33	GERP -3.7, phastCons 0.009
Regional constraint	o/e 1.01	unconstrained · MANE · 10 kb · p 0.84 · regional, not allelic
Overall
CADD	1.819	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — a triage signal, not a reclassification

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

⚠ Isoform check: AlphaMissense numbered on a different transcript (AM A409V vs ClinVar A455V) — verify the residue.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0107% African / African-American · 8/74,872 alleles

Filtering AF 0.00528% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00381%

Overall 0.0013% 21/1,611,422 alleles · ultra-rare

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.0107%	9,359
Remaining individualsnot grpmax-eligible	0.00321%	31,187
Admixed American	0.00167%	59,776
European (non-Finnish)	0.000848%	117,856

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: DBN1
Protein: p.Ala455Val
Coding: c.1364C>T
MANE Select: NM_001363541
Type: single nucleotide variant
Location: chr5:177458608 (GRCh38)
Gene constraint: LOEUF 0.347 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 62.93 · 5 PDB

Full DBN1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

DBN1 c.86+1283G>A Uncertain significance ★ same type
DBN1 c.86+1286G>A Uncertain significance ★ same type
DBN1 c.86+1299A>T Uncertain significance ★ same type
DBN1 p.Ala126Val Uncertain significance ★ ⚠ same type
DBN1 p.Ala244Val Uncertain significance ★ ⚠ same type
DBN1 p.Ala27Thr Uncertain significance ★ ⚠ same type
DBN1 p.Ala485Thr Uncertain significance ★ ⚠ same type
DBN1 p.Ala532Thr Uncertain significance ★ ⚠ 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/dbn1-p-ala455val (accessed [today's date]).

Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown