rs756542427

Variant names:

• chr5-169714217-CG-C
• rs756542427
• NM_004946.3:c.1843+9delG

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP6_Moderate BS1

The NM_004946.3(DOCK2):​c.1843+9delG variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000842 in 1,603,892 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.00048 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000043 (0 hom.)
• Consequence: DOCK2 NM_004946.3 intron
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.0330
• Publications: 0 publications found

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

ACMG classification

Our verdict: Likely_benign. The variant received -6 ACMG points.

• BP6: Variant 5-169714217-CG-C is Benign according to our data. Variant chr5-169714217-CG-C is described in ClinVar as Likely_benign. ClinVar VariationId is 542620.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00048 (73/152076) while in subpopulation AFR AF = 0.00167 (69/41422). AF 95% confidence interval is 0.00135. There are 0 homozygotes in GnomAd4. There are 35 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

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.1843+9delG		intron	N/A	NP_004937.1
	DOCK2	NR_156756.1		n.1895+9delG		intron	N/A

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DOCK2	ENST00000520908.7	TSL:2 MANE Select	c.1843+7delG		splice_region intron	N/A	ENSP00000429283.3
	DOCK2	ENST00000524185.5	TSL:1	n.1843+7delG		splice_region intron	N/A	ENSP00000428850.1
	DOCK2	ENST00000519628.2	TSL:3	c.1843+7delG		splice_region intron	N/A	ENSP00000428841.2

Frequencies

GnomAD3 genomes AF: 0.000480 AC: 73 AN: 152076 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00167

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000656

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.000957

GnomAD2 exomes AF: 0.000131 AC: 32 AN: 243622 AF XY: 0.0000913

Gnomad AFR exome AF: 0.00185

Gnomad AMR exome AF: 0.0000587

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000427 AC: 62 AN: 1451816 Hom.: 0 Cov.: 31 AF XY: 0.0000291 AC XY: 21 AN XY: 720590

African (AFR) AF: 0.00168 AC: 56 AN: 33328

American (AMR) AF: 0.0000677 AC: 3 AN: 44314

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25572

East Asian (EAS) AF: 0.00 AC: 0 AN: 39478

South Asian (SAS) AF: 0.00 AC: 0 AN: 85156

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53112

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5716

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1105204

Other (OTH) AF: 0.0000501 AC: 3 AN: 59936

GnomAD4 genome AF: 0.000480 AC: 73 AN: 152076 Hom.: 0 Cov.: 32 AF XY: 0.000471 AC XY: 35 AN XY: 74262

African (AFR) AF: 0.00167 AC: 69 AN: 41422

American (AMR) AF: 0.0000656 AC: 1 AN: 15254

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5190

South Asian (SAS) AF: 0.00 AC: 0 AN: 4826

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10592

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68006

Other (OTH) AF: 0.000957 AC: 2 AN: 2090

Alfa AF: 0.000641 Hom.: 0

Bravo AF: 0.000567

ClinVar

ClinVar submissions as Germline

Significance: Likely benign

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	-	1	DOCK2 deficiency (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.033

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs756542427; hg19: chr5-169141221;