Is DOCK8 p.Arg1406Pro (c.4217G>C) pathogenic?

DOCK8 p.Arg1406Pro (c.4217G>C) is classified Uncertain significance in DOCK8 (ClinVar, Single submitter, 1 submitter; last evaluated 2021-01-09). AlphaMissense: likely pathogenic (0.947); Absent from gnomAD v4.1; Associated with combined immunodeficiency due to DOCK8 deficiency.

What condition is associated with DOCK8 p.Arg1406Pro (c.4217G>C)?

DOCK8 p.Arg1406Pro (c.4217G>C) is associated with combined immunodeficiency due to DOCK8 deficiency (ClinVar).

How common is DOCK8 p.Arg1406Pro (c.4217G>C) in the general population?

DOCK8 p.Arg1406Pro (c.4217G>C) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about DOCK8 p.Arg1406Pro (c.4217G>C)?

AlphaMissense predicts likely pathogenic (score 0.947) — an in-silico prediction, not a clinical call.

DOCK8 p.Arg1406Pro

Q: How is Combined immunodeficiency due to DOCK8 deficiency inherited?

Typically Autosomal recessive (Orphanet). A genetic counselor can assess individual risk for a family.

c.4217G>C · rs1564048056 · VCV1363771

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.947 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

1/2 damaging

AlphaMissense, SaProt · REVEL indeterminate

Conditions

combined immunodeficiency due to DOCK8 deficiency

Computational evidence

Protein change
AlphaMissense	0.947	likely pathogenic · top 6% in DOCK8
REVEL	0.431	indeterminate
SaProt	LLR -6.55	tolerated
⇒ AlphaMissense calls this damaging; SaProt does not; REVEL is indeterminate.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 12	GERP 2.9, phastCons 1
Regional constraint	o/e 1.15	unconstrained · MANE · 235 kb · p 6.4e-14 · regional, not allelic
Overall
CADD	26.2	PHRED · no single calibrated threshold — expert panels disagree

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

Population frequency

gnomAD v4.1 · exomes + genomes

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: DOCK8
Protein: p.Arg1406Pro
Coding: c.4217G>C
MANE Select: NM_203447
dbSNP: rs1564048056
Type: single nucleotide variant
Location: chr9:422111 (GRCh38)
Gene constraint: LOEUF 0.622 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 75.17

Full DOCK8 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

combined immunodeficiency due to DOCK8 deficiency — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Combined immunodeficiency due to DOCK8 deficiency (Orphanet):

Inheritance: Autosomal recessive
Onset: Infancy, Neonatal

Similar variants

DOCK8 p.Arg1406Gln Uncertain significance ★★ ⚠ same residue
DOCK8 p.Arg1406Trp Uncertain significance ★ same residue
DOCK8 c.1680-2A>G Likely pathogenic ★★ same condition
DOCK8 c.2779-2A>C Likely pathogenic ★★ same condition
DOCK8 c.2971-1G>A Pathogenic ★★ same condition
DOCK8 c.3530+1G>A Likely pathogenic ★★ same condition
DOCK8 c.528+1G>A Likely pathogenic ★★ same condition
DOCK8 c.529-2A>G Likely pathogenic ★★ 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/dock8-p-arg1406pro (accessed [today's date]).

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