7-44220124-C-T

Position:

chr7-44220124-C-T

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 1P and 4B. PP2BS2

The NM_001220.5(CAMK2B):c.1939G>A(p.Asp647Asn) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000621 in 1,611,454 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 34)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

CAMK2B
NM_001220.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 7.52

Variant links:

Genes affected

CAMK2B (HGNC:1461): (calcium/calmodulin dependent protein kinase II beta) The product of this gene belongs to the serine/threonine protein kinase family and to the Ca(2+)/calmodulin-dependent protein kinase subfamily. Calcium signaling is crucial for several aspects of plasticity at glutamatergic synapses. In mammalian cells, the enzyme is composed of four different chains: alpha, beta, gamma, and delta. The product of this gene is a beta chain. It is possible that distinct isoforms of this chain have different cellular localizations and interact differently with calmodulin. Alternative splicing results in multiple transcript variants. [provided by RefSeq, May 2014]

CAMK2B links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), CAMK2B. . Gene score misZ 4.0707 (greater than the threshold 3.09). Trascript score misZ 3.3558 (greater than threshold 3.09). GenCC has associacion of gene with intellectual disability, autosomal dominant 54, intellectual disability, autosomal dominant 40, autosomal dominant non-syndromic intellectual disability.

BS2

High AC in GnomAdExome4 at 6 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CAMK2B	NM_001220.5 linkuse as main transcript	c.1939G>A	p.Asp647Asn	missense_variant	23/24	ENST00000395749.7	NP_001211.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CAMK2B	ENST00000395749.7 linkuse as main transcript	c.1939G>A	p.Asp647Asn	missense_variant	23/24	1	NM_001220.5	ENSP00000379098		Q13554-1

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152244

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000965

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000816

AC:

AN:

245026

Hom.:

AF XY:

0.00000750

AC XY:

AN XY:

133346

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000583

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000411

AC:

AN:

1459210

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

725930

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000672

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000180

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152244

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74378

show subpopulations

Gnomad4 AFR

AF:

0.0000965

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000227

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 10, 2018

- -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 11, 2023

This sequence change replaces aspartic acid, which is acidic and polar, with asparagine, which is neutral and polar, at codon 647 of the CAMK2B protein (p.Asp647Asn). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with CAMK2B-related conditions. ClinVar contains an entry for this variant (Variation ID: 985763). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant¬†is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.20

BayesDel_addAF

Benign

-0.19

BayesDel_noAF

Benign

-0.50

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.35

.;.;T;.;.;.;.;.;.;.;.

Eigen

Benign

0.18

Eigen_PC

Benign

0.20

FATHMM_MKL

Uncertain

0.93

LIST_S2

Pathogenic

0.98

.;.;D;D;D;D;D;D;D;D;D

M_CAP

Benign

0.079

MetaRNN

Uncertain

0.62

D;D;D;D;D;D;D;D;D;D;D

MetaSVM

Benign

-0.63

MutationAssessor

Uncertain

2.0

.;.;M;.;.;.;.;.;.;.;.

MutationTaster

Benign

1.0

D;D;D;D;D;D;D;D;D;D;D

PrimateAI

Uncertain

0.50

PROVEAN

Uncertain

-3.1

D;D;D;D;D;D;D;D;D;D;D

REVEL

Uncertain

0.29

Sift

Benign

0.11

T;T;T;D;T;T;T;T;T;T;T

Sift4G

Benign

0.071

T;T;T;T;T;T;T;T;T;T;T

Polyphen

0.94

P;B;P;.;P;P;B;B;B;P;B

Vest4

0.50

MutPred

0.74

.;.;Gain of MoRF binding (P = 0.0584);.;.;.;.;.;.;.;.;

MVP

0.70

MPC

1.1

ClinPred

0.90

GERP RS

4.3

Varity_R

0.14

gMVP

0.81

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over