Is DOCK8 p.Phe627= (c.1881T>C) pathogenic?

DOCK8 p.Phe627= (c.1881T>C) is classified Conflicting classifications of pathogenicity in DOCK8 (ClinVar, Conflicting submitters, 5 submitters; last evaluated 2026-03-30). Rare (popmax 0.344%, afr); Associated with combined immunodeficiency due to DOCK8 deficiency.

What condition is associated with DOCK8 p.Phe627= (c.1881T>C)?

DOCK8 p.Phe627= (c.1881T>C) is associated with combined immunodeficiency due to DOCK8 deficiency (ClinVar).

How common is DOCK8 p.Phe627= (c.1881T>C) in the general population?

DOCK8 p.Phe627= (c.1881T>C) is rare (popmax 0.344%, afr) (gnomAD).

DOCK8 p.Phe627=

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.1881T>C · rs140134223 · VCV377798

Conflicting classifications of pathogenicity Conflicting submitters

Classification

Conflicting classifications of pathogenicity

ClinVar

Review

Conflicting submitters ★☆☆☆

ClinVar · 5 submitters

gnomAD v4.1

Rare

rare (popmax 0.344%, afr)

Conditions

combined immunodeficiency due to DOCK8 deficiency

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 0.47	GERP -3.1, phastCons 1
Overall
CADD	7.869	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.344% African / African-American · 258/75,056 alleles

Filtering AF 0.309% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.296%

Overall 0.0184% 297/1,614,198 alleles · rare

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.344%	291
Middle Eastern	0.033%	3,030
Remaining individualsnot grpmax-eligible	0.0304%	3,290
Admixed American	0.0233%	4,288
European (non-Finnish)	0.000339%	295,007

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.Phe627=
Coding: c.1881T>C
MANE Select: NM_203447
dbSNP: rs140134223
Type: single nucleotide variant
Location: chr9:371440 (GRCh38)
Gene constraint: LOEUF 0.622 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 75.17
Residue 627: the c2 dock-type 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 p.Phe627Val 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
DOCK8 p.Arg1388Ter 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-phe627 (accessed [today's date]).

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