9-340261-C-G

Variant names:

• chr9-340261-C-G
• rs377334031
• NM_203447.4:c.1619C>G

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP3

The NM_203447.4(DOCK8):​c.1619C>G​(p.Pro540Arg) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,878 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P540A) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: DOCK8 NM_203447.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.95
• Publications: 0 publications found

Genes affected

DOCK8 (HGNC:19191): (dedicator of cytokinesis 8) This gene encodes a member of the DOCK180 family of guanine nucleotide exchange factors. Guanine nucleotide exchange factors interact with Rho GTPases and are components of intracellular signaling networks. Mutations in this gene result in the autosomal recessive form of the hyper-IgE syndrome. Alternatively spliced transcript variants encoding different isoforms have been described.[provided by RefSeq, Jun 2010]

DOCK8 Gene-Disease associations (from GenCC):

• combined immunodeficiency due to DOCK8 deficiency

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE, LIMITED Submitted by: Ambry Genetics, Genomics England PanelApp, ClinGen, Orphanet, Labcorp Genetics (formerly Invitae), G2P
• autosomal dominant non-syndromic intellectual disability

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• complex neurodevelopmental disorder

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.782

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_203447.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DOCK8	NM_203447.4	MANE Select	c.1619C>G	p.Pro540Arg	missense	Exon 14 of 48	NP_982272.2	Q8NF50-1
	DOCK8	NM_001193536.2		c.1415C>G	p.Pro472Arg	missense	Exon 13 of 47	NP_001180465.1	Q8NF50-3
	DOCK8	NM_001190458.2		c.1415C>G	p.Pro472Arg	missense	Exon 13 of 46	NP_001177387.1	Q8NF50-4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DOCK8	ENST00000432829.7	TSL:1 MANE Select	c.1619C>G	p.Pro540Arg	missense	Exon 14 of 48	ENSP00000394888.3	Q8NF50-1
	DOCK8	ENST00000469391.5	TSL:1	c.1415C>G	p.Pro472Arg	missense	Exon 13 of 46	ENSP00000419438.1	Q8NF50-4
	DOCK8	ENST00000382329.2	TSL:1	c.1415C>G	p.Pro472Arg	missense	Exon 14 of 46	ENSP00000371766.2	A2A369

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461878 Hom.: 0 Cov.: 30 AF XY: 0.00000275 AC XY: 2 AN XY: 727244

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111996

Other (OTH) AF: 0.0000166 AC: 1 AN: 60396

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Combined immunodeficiency due to DOCK8 deficiency (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.49
BayesDel_addAF	Pathogenic	0.23	D
BayesDel_noAF	Uncertain	0.090
CADD	Benign	22
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.64	D
Eigen	Uncertain	0.58
Eigen_PC	Uncertain	0.49
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.91	D
M_CAP	Benign	0.034	D
MetaRNN	Pathogenic	0.78	D
MetaSVM	Benign	-0.39	T
MutationAssessor	Pathogenic	3.4	M
PhyloP100		3.9
PrimateAI	Uncertain	0.53	T
PROVEAN	Uncertain	-3.7	D
REVEL	Uncertain	0.31
Sift	Uncertain	0.0010	D
Sift4G	Uncertain	0.0040	D
Polyphen		1.0	D
Vest4		0.77
MutPred		0.34		Loss of ubiquitination at K542 (P = 0.0638)
MVP		0.64
MPC		0.29
ClinPred		0.99	D
GERP RS		3.6
Varity_R		0.82
gMVP		0.68
Mutation Taster		=27/73	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs377334031; hg19: chr9-340261;