6-31666881-G-A

Variant names:

• chr6-31666881-G-A
• NM_001320.7:c.50G>A

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP2

The NM_001320.7(CSNK2B):​c.50G>A​(p.Arg17His) variant causes a missense 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: 31)
• Consequence: CSNK2B NM_001320.7 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.12
• Publications: 0 publications found

Genes affected

CSNK2B (HGNC:2460): (casein kinase 2 beta) This gene encodes the beta subunit of casein kinase II, a ubiquitous protein kinase which regulates metabolic pathways, signal transduction, transcription, translation, and replication. The enzyme is composed of three subunits, alpha, alpha prime and beta, which form a tetrameric holoenzyme. The alpha and alpha prime subunits are catalytic, while the beta subunit serves regulatory functions. The enzyme localizes to the endoplasmic reticulum and the Golgi apparatus. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2013]

CSNK2B Gene-Disease associations (from GenCC):

• Poirier-Bienvenu neurodevelopmental syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Illumina, Labcorp Genetics (formerly Invitae), ClinGen, G2P, Ambry Genetics
• autosomal dominant non-syndromic intellectual disability

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ENSG00000263020 (HGNC:):

ACMG classification

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

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the CSNK2B gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 14 curated pathogenic missense variants (we use a threshold of 10). The gene has 1 curated benign missense variants. Gene score misZ: 3.1296 (above the threshold of 3.09). Trascript score misZ: 3.7791 (above the threshold of 3.09). GenCC associations: The gene is linked to Poirier-Bienvenu neurodevelopmental syndrome, autosomal dominant non-syndromic intellectual disability.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001320.7. 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
	CSNK2B	NM_001320.7	MANE Select	c.50G>A	p.Arg17His	missense	Exon 2 of 7	NP_001311.3
	CSNK2B	NM_001282385.2		c.50G>A	p.Arg17His	missense	Exon 2 of 7	NP_001269314.1	A0A1U9X7J2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CSNK2B	ENST00000375882.7	TSL:1 MANE Select	c.50G>A	p.Arg17His	missense	Exon 2 of 7	ENSP00000365042.3	P67870
	ENSG00000263020	ENST00000617558.2	TSL:1	c.50G>A	p.Arg17His	missense	Exon 1 of 6	ENSP00000483989.2	N0E472
	ENSG00000263020	ENST00000375880.6	TSL:3	c.50G>A	p.Arg17His	missense	Exon 2 of 8	ENSP00000365040.2	Q5SRQ3

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 31

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Poirier-Bienvenu neurodevelopmental syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.98
BayesDel_addAF	Pathogenic	0.22	D
BayesDel_noAF	Uncertain	0.070
CADD	Pathogenic	29
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.78	D
Eigen	Uncertain	0.59
Eigen_PC	Pathogenic	0.69
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.91	D
M_CAP	Benign	0.012	T
MetaRNN	Uncertain	0.43	T
MetaSVM	Uncertain	-0.23	T
MutationAssessor	Pathogenic	3.1	M
PhyloP100		9.1
PrimateAI	Pathogenic	0.89	D
PROVEAN	Uncertain	-3.8	D
REVEL	Uncertain	0.32
Sift	Uncertain	0.017	D
Sift4G	Uncertain	0.024	D
Polyphen		0.017	B
Vest4		0.45
MutPred		0.50		Loss of methylation at R17 (P = 0.0895)
MVP		0.66
MPC		2.0
ClinPred		0.98	D
GERP RS		6.0
PromoterAI		-0.062	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.34
gMVP		0.79
Mutation Taster		=18/82	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: chr6-31634658;