Is DIP2B p.Arg634Gln (c.1901G>A) pathogenic?

DIP2B p.Arg634Gln (c.1901G>A) is classified Uncertain significance in DIP2B (ClinVar, Single submitter, 1 submitter; last evaluated 2025-04-20). AlphaMissense: likely benign (0.282); Ultra-rare (popmax 0.0333%, afr).

How common is DIP2B p.Arg634Gln (c.1901G>A) in the general population?

DIP2B p.Arg634Gln (c.1901G>A) is ultra-rare (popmax 0.0333%, afr) (gnomAD).

What do computational predictors say about DIP2B p.Arg634Gln (c.1901G>A)?

AlphaMissense predicts likely benign (score 0.282) — an in-silico prediction, not a clinical call.

DIP2B p.Arg634Gln

c.1901G>A · rs142942647 · VCV2225186

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.282 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0333%, afr)

Missense predictors

0/2 damaging

AlphaMissense, SaProt · REVEL no call

Computational evidence

Protein change
AlphaMissense	0.282	likely benign
REVEL	0.54	indeterminate
SaProt	LLR -9.51	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 12	GERP 2.6, phastCons 1
Regional constraint	o/e 0.79	unconstrained · MANE · 240 kb · p 4.2e-21 · regional, not allelic
Overall
CADD	33.0	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.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0333% African / African-American · 25/75,008 alleles

Filtering AF 0.0231% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0197%

Overall 0.0031% 50/1,614,060 alleles · ultra-rare

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.0333%	3,000
Middle Eastern	0.0165%	6,062
Admixed American	0.00666%	15,006
South Asian	0.00659%	15,181
Remaining individualsnot grpmax-eligible	0.0016%	62,510
European (non-Finnish)	0.0011%	90,766

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: DIP2B
Protein: p.Arg634Gln
Coding: c.1901G>A
MANE Select: NM_173602
dbSNP: rs142942647
Type: single nucleotide variant
Location: chr12:50695935 (GRCh38)
Gene constraint: LOEUF 0.448 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 78.83

Full DIP2B gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

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DIP2B p.Cys1071Ser Uncertain significance ★★ ⚠ same type
DIP2B p.His1027Arg Uncertain significance ★★ ⚠ same type
DIP2B p.Ile681Val Uncertain significance ★★ ⚠ same type
DIP2B p.Ile968Thr Uncertain significance ★★ ⚠ same type
DIP2B p.Ile994Leu Uncertain significance ★★ ⚠ same type
DIP2B p.Pro244Ala Uncertain significance ★★ ⚠ same type
DIP2B p.Pro513Ser 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/dip2b-p-arg634gln (accessed [today's date]).

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