Is DYNC2I2 p.Ser281Asn (c.842G>A) pathogenic?

DYNC2I2 p.Ser281Asn (c.842G>A) is classified Uncertain significance in DYNC2I2 (ClinVar, Single submitter, 1 submitter; last evaluated 2022-11-08). AlphaMissense: likely benign (0.093); Very rare (popmax 0.00161%, nfe); Associated with short-rib thoracic dysplasia 11 with or without polydactyly.

What condition is associated with DYNC2I2 p.Ser281Asn (c.842G>A)?

DYNC2I2 p.Ser281Asn (c.842G>A) is associated with short-rib thoracic dysplasia 11 with or without polydactyly (ClinVar).

How common is DYNC2I2 p.Ser281Asn (c.842G>A) in the general population?

DYNC2I2 p.Ser281Asn (c.842G>A) is very rare (popmax 0.00161%, nfe) (gnomAD).

What do computational predictors say about DYNC2I2 p.Ser281Asn (c.842G>A)?

AlphaMissense predicts likely benign (score 0.093) — an in-silico prediction, not a clinical call.

DYNC2I2 p.Ser281Asn

c.842G>A · rs746568024 · VCV1681222

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.093 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00161%, nfe)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

short-rib thoracic dysplasia 11 with or without polydactyly

Computational evidence

Protein change
AlphaMissense	0.093	likely benign
REVEL	0.093	moderately benign-leaning
SaProt	LLR -8.70	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	Δ0.54	acceptor gain · deltas
Constraint at this position
Conservation	phyloP 1.1	GERP -0.92, phastCons 0.51
Regional constraint	o/e 1.02	unconstrained · MANE · 23 kb · p 0.59 · regional, not allelic
Overall
CADD	17.87	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 0.00161% European (non-Finnish) · 19/1,179,878 alleles

Filtering AF 0.00103% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00083%

Overall 0.00137% 20/1,460,522 alleles · very rare

Ancestry group	Frequency	1 in
European (non-Finnish)grpmax	0.00161%	62,099
Remaining individualsnot grpmax-eligible	0.0016%	62,450

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: DYNC2I2
Protein: p.Ser281Asn
Coding: c.842G>A
MANE Select: NM_052844
dbSNP: rs746568024
Type: single nucleotide variant
Location: chr9:128635231 (GRCh38)
Gene constraint: LOEUF 1.036 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 82.66 · 4 PDB

Full DYNC2I2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

short-rib thoracic dysplasia 11 with or without polydactyly — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

DYNC2I2 c.1372+1G>A Pathogenic/Likely pathogenic ★★ same condition
DYNC2I2 p.Arg121Ter Pathogenic ★★ same condition
DYNC2I2 p.Arg182Trp Pathogenic/Likely pathogenic ★★ ⚠ same condition
DYNC2I2 p.Arg447Trp Pathogenic/Likely pathogenic ★★ same condition
DYNC2I2 p.Ala131Val Uncertain significance ★★ ⚠ same condition
DYNC2I2 p.Ala13Gly Uncertain significance ★★ ⚠ same condition
DYNC2I2 p.Ala219Thr Uncertain significance ★★ ⚠ same condition
DYNC2I2 p.Ala369Val 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/dync2i2-p-ser281asn (accessed [today's date]).

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