chr1-22078495-GTGT-G

Variant names:

• chr1-22078495-GTGT-G
• NM_001791.4:c.24_26delTGT

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PM4_Supporting

The NM_001791.4(CDC42):​c.24_26delTGT​(p.Val9del) variant causes a disruptive inframe deletion change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: CDC42 NM_001791.4 disruptive_inframe_deletion
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.30
• Publications: 0 publications found

Genes affected

CDC42 (HGNC:1736): (cell division cycle 42) The protein encoded by this gene is a small GTPase of the Rho-subfamily, which regulates signaling pathways that control diverse cellular functions including cell morphology, migration, endocytosis and cell cycle progression. This protein is highly similar to Saccharomyces cerevisiae Cdc 42, and is able to complement the yeast cdc42-1 mutant. The product of oncogene Dbl was reported to specifically catalyze the dissociation of GDP from this protein. This protein could regulate actin polymerization through its direct binding to Neural Wiskott-Aldrich syndrome protein (N-WASP), which subsequently activates Arp2/3 complex. Alternative splicing of this gene results in multiple transcript variants. Pseudogenes of this gene have been identified on chromosomes 3, 4, 5, 7, 8 and 20. [provided by RefSeq, Apr 2013]

CDC42 Gene-Disease associations (from GenCC):

• macrothrombocytopenia-lymphedema-developmental delay-facial dysmorphism-camptodactyly syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, G2P, Ambry Genetics

ENSG00000289694 (HGNC:):

ACMG classification

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

• PM2: Very rare variant in population databases, with high coverage
• PM4: Nonframeshift variant in NON repetitive region in NM_001791.4. Strenght limited to Supporting due to length of the change: 1aa.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001791.4. 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
	CDC42	NM_001791.4	MANE Select	c.24_26delTGT	p.Val9del	disruptive_inframe_deletion	Exon 2 of 6	NP_001782.1	P60953-2
	CDC42	NM_001039802.2		c.24_26delTGT	p.Val9del	disruptive_inframe_deletion	Exon 3 of 7	NP_001034891.1	P60953-2
	CDC42	NM_044472.3		c.24_26delTGT	p.Val9del	disruptive_inframe_deletion	Exon 2 of 6	NP_426359.1	P60953-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CDC42	ENST00000656825.1	MANE Select	c.24_26delTGT	p.Val9del	disruptive_inframe_deletion	Exon 2 of 6	ENSP00000499457.1	P60953-2
	CDC42	ENST00000315554.15	TSL:1	c.24_26delTGT	p.Val9del	disruptive_inframe_deletion	Exon 2 of 6	ENSP00000314458.8	P60953-1
	CDC42	ENST00000344548.8	TSL:1	c.24_26delTGT	p.Val9del	disruptive_inframe_deletion	Exon 3 of 7	ENSP00000341072.3	P60953-2

Frequencies

GnomAD3 genomes Cov.: 32

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		9.3

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

hg19: chr1-22404988;