9-340170-C-T

Variant names:

• chr9-340170-C-T
• rs771479299
• NM_203447.4:c.1528C>T

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2 BP4_Moderate BP7

The NM_203447.4(DOCK8):​c.1528C>T​(p.Leu510Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: DOCK8 NM_203447.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.436
• 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: Likely_benign. The variant received -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.34).
• BP7: Synonymous conserved (PhyloP=0.436 with no splicing effect.

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.1528C>T	p.Leu510Leu	synonymous	Exon 14 of 48	NP_982272.2	Q8NF50-1
	DOCK8	NM_001193536.2		c.1324C>T	p.Leu442Leu	synonymous	Exon 13 of 47	NP_001180465.1	Q8NF50-3
	DOCK8	NM_001190458.2		c.1324C>T	p.Leu442Leu	synonymous	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.1528C>T	p.Leu510Leu	synonymous	Exon 14 of 48	ENSP00000394888.3	Q8NF50-1
	DOCK8	ENST00000469391.5	TSL:1	c.1324C>T	p.Leu442Leu	synonymous	Exon 13 of 46	ENSP00000419438.1	Q8NF50-4
	DOCK8	ENST00000382329.2	TSL:1	c.1324C>T	p.Leu442Leu	synonymous	Exon 14 of 46	ENSP00000371766.2	A2A369

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.34
CADD	Benign	6.1
DANN	Benign	0.74
PhyloP100		0.44

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: rs771479299; hg19: chr9-340170;