rs863225429

Variant names:

• chrX-49249543-A-G
• rs863225429
• NM_014008.5:c.1670A>G

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM2 PP3_Moderate PP5

The NM_014008.5(CCDC22):​c.1670A>G​(p.Tyr557Cys) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 21)
• Consequence: CCDC22 NM_014008.5 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1 O:1
• Conservation: PhyloP100: 3.87
• Publications: 9 publications found

Genes affected

CCDC22 (HGNC:28909): (coiled-coil domain containing 22) This gene encodes a protein containing a coiled-coil domain. The encoded protein functions in the regulation of NF-kB (nuclear factor kappa-light-chain-enhancer of activated B cells) by interacting with COMMD (copper metabolism Murr1 domain-containing) proteins. The mouse orthologous protein has been shown to bind copines, which are calcium-dependent, membrane-binding proteins that may function in calcium signaling. This human gene has been identified as a novel candidate gene for syndromic X-linked intellectual disability. [provided by RefSeq, Aug 2013]

CCDC22 Gene-Disease associations (from GenCC):

• Ritscher-Schinzel syndrome 2

  Inheritance: XL Classification: STRONG, MODERATE, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), ClinGen, G2P
• Ritscher-Schinzel syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• epilepsy

  Inheritance: XL Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.
• PP5: Variant X-49249543-A-G is Pathogenic according to our data. Variant chrX-49249543-A-G is described in ClinVar as Pathogenic. ClinVar VariationId is 218106.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014008.5. 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
	CCDC22	NM_014008.5	MANE Select	c.1670A>G	p.Tyr557Cys	missense	Exon 15 of 17	NP_054727.1	O60826

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CCDC22	ENST00000376227.4	TSL:1 MANE Select	c.1670A>G	p.Tyr557Cys	missense	Exon 15 of 17	ENSP00000365401.3	O60826
	CCDC22	ENST00000960401.1		c.1694A>G	p.Tyr565Cys	missense	Exon 15 of 17	ENSP00000630460.1
	CCDC22	ENST00000904959.1		c.1688A>G	p.Tyr563Cys	missense	Exon 15 of 17	ENSP00000575018.1

Frequencies

GnomAD3 genomes Cov.: 21

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 21

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	Ritscher-Schinzel syndrome 2 (1)
-	-	-	Ritscher-Schinzel syndrome 1 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.95
BayesDel_addAF	Pathogenic	0.50	D
BayesDel_noAF	Pathogenic	0.48
CADD	Pathogenic	35
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.80	D
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.95	D
M_CAP	Pathogenic	0.65	D
MetaRNN	Pathogenic	0.99	D
MetaSVM	Uncertain	-0.053	T
MutationAssessor	Uncertain	2.8	M
PhyloP100		3.9
PrimateAI	Pathogenic	0.87	D
PROVEAN	Pathogenic	-7.8	D
REVEL	Pathogenic	0.89
Sift	Uncertain	0.0020	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.97
MutPred		0.88		Gain of methylation at K558 (P = 0.0134)
MVP		0.85
MPC		0.62
ClinPred		1.0	D
GERP RS		5.4
Varity_R		0.92
gMVP		0.92
Mutation Taster		=30/70	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.98		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.98		Position offset: -1
DS_DL_spliceai		0.47		Position offset: 25

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

Other links and lift over

dbSNP: rs863225429; hg19: chrX-49106004;