NM_014927.5:c.76T>C

Variant names:

• chrX-21426508-T-C
• NM_014927.5:c.76T>C

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_014927.5(CNKSR2):​c.76T>C​(p.Cys26Arg) 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 Uncertain significance (★).

• Frequency: Genomes: not found (cov: 23)
• Consequence: CNKSR2 NM_014927.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.88
• Publications: 0 publications found

Genes affected

CNKSR2 (HGNC:19701): (connector enhancer of kinase suppressor of Ras 2) This gene encodes a multidomain protein that functions as a scaffold protein to mediate the mitogen-activated protein kinase pathways downstream from Ras. This gene product is induced by vitamin D and inhibits apoptosis in certain cancer cells. It may also play a role in ternary complex assembly of synaptic proteins at the postsynaptic membrane and coupling of signal transduction to membrane/cytoskeletal remodeling. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2009]

CNKSR2 Gene-Disease associations (from GenCC):

• X-linked complex neurodevelopmental disorder

  Inheritance: XL Classification: DEFINITIVE Submitted by: ClinGen
• intellectual disability, X-linked, syndromic, Houge type

  Inheritance: XL Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
• undetermined early-onset epileptic encephalopathy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• non-syndromic X-linked intellectual disability

  Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.856

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014927.5. 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
	CNKSR2	NM_014927.5	MANE Select	c.76T>C	p.Cys26Arg	missense	Exon 2 of 22	NP_055742.2
	CNKSR2	NM_001168647.3		c.76T>C	p.Cys26Arg	missense	Exon 2 of 21	NP_001162118.1	Q8WXI2-5
	CNKSR2	NM_001330770.2		c.76T>C	p.Cys26Arg	missense	Exon 2 of 21	NP_001317699.1	A0A2R8Y7A1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CNKSR2	ENST00000379510.5	TSL:1 MANE Select	c.76T>C	p.Cys26Arg	missense	Exon 2 of 22	ENSP00000368824.3	Q8WXI2-1
	CNKSR2	ENST00000425654.7	TSL:1	c.76T>C	p.Cys26Arg	missense	Exon 2 of 21	ENSP00000397906.2	Q8WXI2-5
	CNKSR2	ENST00000279451.9	TSL:1	c.76T>C	p.Cys26Arg	missense	Exon 2 of 20	ENSP00000279451.5	A0A2U3TZH5

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Cov.: 28

GnomAD4 genome Cov.: 23

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Intellectual disability, X-linked, syndromic, Houge type (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.99
BayesDel_addAF	Pathogenic	0.33	D
BayesDel_noAF	Pathogenic	0.24
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.59	D
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Pathogenic	0.98	D
M_CAP	Uncertain	0.18	D
MetaRNN	Pathogenic	0.86	D
MetaSVM	Benign	-0.53	T
MutationAssessor	Pathogenic	3.2	M
PhyloP100		5.9
PrimateAI	Pathogenic	0.90	D
PROVEAN	Pathogenic	-8.0	D
REVEL	Pathogenic	0.69
Sift	Uncertain	0.0040	D
Sift4G	Uncertain	0.0020	D
Polyphen		0.99	D
Vest4		0.78
MutPred		0.58		Gain of MoRF binding (P = 0.0124)
MVP		0.92
MPC		2.4
ClinPred		1.0	D
GERP RS		5.3
Varity_R		0.98
gMVP		0.85
Mutation Taster		=33/67	disease causing

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: chrX-21444626;