Is DOCK8 p.Pro1823Ser (c.5467C>T) pathogenic?

DOCK8 p.Pro1823Ser (c.5467C>T) is classified Uncertain significance in DOCK8 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2025-08-20). AlphaMissense: ambiguous (0.5066); Very rare (popmax 0.000339%, nfe); Associated with combined immunodeficiency due to DOCK8 deficiency.

What condition is associated with DOCK8 p.Pro1823Ser (c.5467C>T)?

DOCK8 p.Pro1823Ser (c.5467C>T) is associated with combined immunodeficiency due to DOCK8 deficiency (ClinVar).

How common is DOCK8 p.Pro1823Ser (c.5467C>T) in the general population?

DOCK8 p.Pro1823Ser (c.5467C>T) is very rare (popmax 0.000339%, nfe) (gnomAD).

What do computational predictors say about DOCK8 p.Pro1823Ser (c.5467C>T)?

AlphaMissense predicts ambiguous (score 0.5066) — an in-silico prediction, not a clinical call.

DOCK8 p.Pro1823Ser

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.5467C>T · rs766493394 · VCV367026

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

AlphaMissense

ambiguous

0.5066 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.000339%, nfe)

Missense predictors

0/2 damaging

REVEL, SaProt · AlphaMissense no call

Conditions

combined immunodeficiency due to DOCK8 deficiency

Computational evidence

Protein change
AlphaMissense	0.5066	ambiguous
REVEL	0.223	benign-leaning
SaProt	LLR -6.76	tolerated
⇒ REVEL and SaProt both call this tolerated; AlphaMissense makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 4.9	GERP 2.5, phastCons 1
Regional constraint	o/e 1.15	unconstrained · MANE · 235 kb · p 6.4e-14 · regional, not allelic
Overall
CADD	25.1	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

Grpmax group 0.000339% European (non-Finnish) · 4/1,179,994 alleles

Filtering AF 7.9e-05% ClinGen BA1/BS1 input FAF95, joint · FAF99 5.4e-05%

Overall 0.000342% 5/1,461,792 alleles · very rare

Ancestry group	Frequency	1 in
Remaining individualsnot grpmax-eligible	0.0016%	62,508
European (non-Finnish)grpmax	0.000339%	294,998

Remaining individuals shows a higher raw frequency than the grpmax group above it. gnomAD excludes bottlenecked groups — Finnish, Ashkenazi Jewish, Amish and “Remaining individuals” — from grpmax, because founder effects make their frequencies unrepresentative for filtering. The table is sorted by frequency, so an excluded group can sit above the grpmax row.

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: DOCK8
Protein: p.Pro1823Ser
Coding: c.5467C>T
MANE Select: NM_203447
dbSNP: rs766493394
Type: single nucleotide variant
Location: chr9:441986 (GRCh38)
Gene constraint: LOEUF 0.622 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 75.17
Residue 1823: the docker domain

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 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
DOCK8 p.Arg1388Ter Pathogenic ★★ same condition
DOCK8 p.Arg1796Ter 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-pro1823ser (accessed [today's date]).

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