Genetic Variant KSR2:p.Arg936Leu (chr12-117469701-C-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PP3_ModerateBS2

The NM_173598.6(KSR2):c.2807G>T(p.Arg936Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000013 in 1,461,124 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R936H) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.000013 ( 0 hom. )

Consequence

KSR2
NM_173598.6 missense

Scores

Clinical Significance

Uncertain significance no assertion criteria provided U:1

Conservation

PhyloP100: 7.91

Variant links:

Genes affected

KSR2 (HGNC:18610): (kinase suppressor of ras 2) Predicted to enable MAP-kinase scaffold activity; mitogen-activated protein kinase kinase binding activity; and protein kinase activity. Predicted to be involved in Ras protein signal transduction; calcium-mediated signaling; and positive regulation of cold-induced thermogenesis. Predicted to act upstream of or within positive regulation of MAPK cascade. Predicted to be active in cytosol and plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

KSR2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.89

BS2

High AC in GnomAdExome4 at 19 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KSR2	NM_173598.6 link	c.2807G>T	p.Arg936Leu	missense_variant	Exon 19 of 20	ENST00000339824.7	NP_775869.4	Q6VAB6-1E9PB13
KSR2	XM_011538224.4 link	c.2801G>T	p.Arg934Leu	missense_variant	Exon 19 of 20		XP_011536526.1
KSR2	XM_011538225.4 link	c.2444G>T	p.Arg815Leu	missense_variant	Exon 19 of 20		XP_011536527.1	Q6VAB6
KSR2	XM_017019210.3 link	c.1502G>T	p.Arg501Leu	missense_variant	Exon 14 of 15		XP_016874699.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KSR2	ENST00000339824.7 link	c.2807G>T	p.Arg936Leu	missense_variant	Exon 19 of 20	5	NM_173598.6	ENSP00000339952.4		Q6VAB6-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000121

AC:

AN:

248178

Hom.:

AF XY:

0.00000743

AC XY:

AN XY:

134590

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

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:

0.0000267

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000130

AC:

AN:

1461124

Hom.:

Cov.:

AF XY:

0.0000138

AC XY:

AN XY:

726732

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

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:

0.0000171

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.0000165

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000596

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

KSR2-related disorder

Uncertain:1

Mar 25, 2024

PreventionGenetics, part of Exact Sciences

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

The KSR2 c.2720G>T variant is predicted to result in the amino acid substitution p.Arg907Leu. This variant was reported in one individual with severe obesity (reported as p.Arg936Leu in Figure 1, Pearce et al. 2013. PubMed ID: 24209692). This variant is reported in 0.0027% of alleles in individuals of European (Non-Finnish) descent in gnomAD. This variant could be pathogenic. However, at this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

1.0

BayesDel_addAF

Pathogenic

0.21

BayesDel_noAF

Uncertain

0.13

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.35

T;T

Eigen

Pathogenic

0.79

Eigen_PC

Pathogenic

0.69

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.97

D;D

M_CAP

Pathogenic

0.68

MetaRNN

Pathogenic

0.89

D;D

MetaSVM

Uncertain

0.67

MutationAssessor

Pathogenic

3.4

.;M

PrimateAI

Pathogenic

0.84

PROVEAN

Uncertain

-3.4

D;D

REVEL

Pathogenic

0.79

Sift

Pathogenic

0.0

D;D

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

.;D

Vest4

0.90

MutPred

0.44

.;Loss of solvent accessibility (P = 0.0022);

MVP

0.83

MPC

1.9

ClinPred

1.0

GERP RS

4.6

Varity_R

0.71

gMVP

0.70

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