Is DAAM2 p.Arg987Trp (c.2959C>T) pathogenic?

DAAM2 p.Arg987Trp (c.2959C>T) is classified Uncertain significance in DAAM2 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-03-17). AlphaMissense: likely pathogenic (0.688); Ultra-rare (popmax 0.01%, amr); Associated with Inborn genetic diseases.

What condition is associated with DAAM2 p.Arg987Trp (c.2959C>T)?

DAAM2 p.Arg987Trp (c.2959C>T) is associated with Inborn genetic diseases (ClinVar).

How common is DAAM2 p.Arg987Trp (c.2959C>T) in the general population?

DAAM2 p.Arg987Trp (c.2959C>T) is ultra-rare (popmax 0.01%, amr) (gnomAD).

What do computational predictors say about DAAM2 p.Arg987Trp (c.2959C>T)?

AlphaMissense predicts likely pathogenic (score 0.688) — an in-silico prediction, not a clinical call.

DAAM2 p.Arg987Trp

c.2959C>T · VCV4009166

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.688 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.01%, amr)

Missense predictors

2/2 damaging

AlphaMissense, SaProt · REVEL no call

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.688	likely pathogenic
REVEL	0.323	indeterminate
SaProt	LLR -13.28	damaging
⇒ AlphaMissense and SaProt both call this damaging; REVEL makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 0.058	GERP 0.37, phastCons 0.5
Regional constraint	o/e 0.97	unconstrained · MANE · 24 kb · p 0.46 · regional, not allelic
Overall
CADD	25.6	PHRED · no single calibrated threshold — expert panels disagree

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

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

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.01% Admixed American · 6/59,964 alleles

Filtering AF 0.00429% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00295%

Overall 0.00151% 22/1,457,800 alleles · ultra-rare

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.01%	9,994
East Asian	0.00446%	22,429
European (non-Finnish)	0.0011%	90,740
South Asian	0.0011%	91,004

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: DAAM2
Protein: p.Arg987Trp
Coding: c.2959C>T
MANE Select: NM_001201427
Type: single nucleotide variant
Location: chr6:39901449 (GRCh38)
Gene constraint: LOEUF 0.488 · pLI 0.98 (gnomAD)
Structure: AlphaFold pLDDT 80.02
Residue 987: a UniProt-annotated variant site (in nphs24; affects the regulation of filopodia formation); the fh2 domain

Full DAAM2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Inborn genetic diseases — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

DAAM2 p.Arg987Gln Uncertain significance ★ ⚠ same residue
DAAM2 p.Arg335Trp Uncertain significance ★★ ⚠ same condition
DAAM2 p.Arg676Trp Uncertain significance ★★ ⚠ same condition
DAAM2 p.Arg990Cys Uncertain significance ★★ ⚠ same condition
DAAM2 p.Gln760Arg Uncertain significance ★★ ⚠ same condition
DAAM2 p.Glu956Lys Uncertain significance ★★ ⚠ same condition
DAAM2 p.Ile699Val Uncertain significance ★★ ⚠ same condition
DAAM2 p.Ala117Val 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/daam2-p-arg987trp (accessed [today's date]).

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