Genetic Variant DOCK2:p.Arg1722Pro (chr5-170079145-G-C) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_004946.3(DOCK2):c.5165G>C(p.Arg1722Pro) variant causes a missense, splice region change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1722Q) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Consequence

DOCK2
NM_004946.3 missense, splice_region

Scores

Splicing: ADA: 0.9594

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.10

Publications

0 publications found

Variant links:

Genes affected

DOCK2 (HGNC:2988): (dedicator of cytokinesis 2) The protein encoded by this gene belongs to the CDM protein family. It is specifically expressed in hematopoietic cells and is predominantly expressed in peripheral blood leukocytes. The protein is involved in remodeling of the actin cytoskeleton required for lymphocyte migration in response to chemokine signaling. It activates members of the Rho family of GTPases, for example RAC1 and RAC2, by acting as a guanine nucleotide exchange factor (GEF) to exchange bound GDP for free GTP. Mutations in this gene result in immunodeficiency 40 (IMD40), a combined form of immunodeficiency that affects T cell number and function, also with variable defects in B cell and NK cell function. [provided by RefSeq, May 2018]

DOCK2 Gene-Disease associations (from GenCC):

DOCK2 deficiency
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), ClinGen, Ambry Genetics

DOCK2 links:

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ACMG classification

Classification was made for transcript

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

PM2

Very rare variant in population databases, with high coverage;

PP3

Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. No scorers claiming Uncertain. Scorers claiming Benign: max_spliceai.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004946.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DOCK2	NM_004946.3	MANE Select	c.5165G>C	p.Arg1722Pro	missense splice_region	Exon 49 of 52	NP_004937.1
	DOCK2	NR_156756.1		n.5268G>C		splice_region non_coding_transcript_exon	Exon 50 of 53

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
DOCK2	ENST00000520908.7	TSL:2 MANE Select	c.5165G>C	p.Arg1722Pro	missense splice_region	Exon 49 of 52	ENSP00000429283.3
DOCK2	ENST00000524185.5	TSL:1	n.*2120G>C		splice_region non_coding_transcript_exon	Exon 50 of 53	ENSP00000428850.1
DOCK2	ENST00000524185.5	TSL:1	n.*2120G>C		3_prime_UTR	Exon 50 of 53	ENSP00000428850.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Cov.:

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.21

BayesDel_addAF

Pathogenic

0.16

BayesDel_noAF

Uncertain

0.0

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.031

Eigen

Uncertain

0.39

Eigen_PC

Uncertain

0.45

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.88

M_CAP

Benign

0.019

MetaRNN

Benign

0.41

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.0

PhyloP100

7.1

PrimateAI

Uncertain

0.52

PROVEAN

Benign

-0.47

REVEL

Benign

0.24

Sift

Benign

0.25

Sift4G

Benign

0.27

Polyphen

0.80

Vest4

0.49

MutPred

0.25

Gain of loop (P = 3e-04)

MVP

0.80

MPC

0.85

ClinPred

0.89

GERP RS

4.8

Varity_R

0.26

gMVP

0.35

Mutation Taster

=43/57

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

0.96

dbscSNV1_RF

Pathogenic

0.90

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over