Genetic Variant KBTBD2:p.Arg580Gln (chr7-32869478-C-T) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_015483.3(KBTBD2):c.1739G>A(p.Arg580Gln) variant causes a missense change. The variant allele was found at a frequency of 0.0000458 in 1,614,088 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000072 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000043 ( 0 hom. )

Consequence

KBTBD2
NM_015483.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.17

Variant links:

Genes affected

KBTBD2 (HGNC:21751): (kelch repeat and BTB domain containing 2) Predicted to act upstream of or within with a positive effect on several processes, including glucose metabolic process; phosphatidylinositol 3-kinase signaling; and response to insulin. [provided by Alliance of Genome Resources, Apr 2022]

KBTBD2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.22152829).

BS2

High AC in GnomAd4 at 11 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KBTBD2	NM_015483.3 link	c.1739G>A	p.Arg580Gln	missense_variant	Exon 4 of 4	ENST00000304056.9	NP_056298.2	Q8IY47A0A024RA38

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KBTBD2	ENST00000304056.9 link	c.1739G>A	p.Arg580Gln	missense_variant	Exon 4 of 4	1	NM_015483.3	ENSP00000302586.4		Q8IY47

Frequencies

GnomAD3 genomes

AF:

0.0000723

AC:

AN:

152128

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000393

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:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000756

AC:

AN:

251316

Hom.:

AF XY:

0.0000736

AC XY:

AN XY:

135806

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000231

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000924

Gnomad NFE exome

AF:

0.0000616

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.0000431

AC:

AN:

1461842

Hom.:

Cov.:

AF XY:

0.0000454

AC XY:

AN XY:

727222

show subpopulations

Gnomad4 AFR exome

AF:

0.0000896

Gnomad4 AMR exome

AF:

0.000268

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000749

Gnomad4 NFE exome

AF:

0.0000324

Gnomad4 OTH exome

AF:

0.000116

GnomAD4 genome

AF:

0.0000723

AC:

AN:

152246

Hom.:

Cov.:

AF XY:

0.0000806

AC XY:

AN XY:

74428

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000392

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000735

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000901

Hom.:

Bravo

AF:

0.000113

ExAC

AF:

0.0000330

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 06, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1739G>A (p.R580Q) alteration is located in exon 4 (coding exon 3) of the KBTBD2 gene. This alteration results from a G to A substitution at nucleotide position 1739, causing the arginine (R) at amino acid position 580 to be replaced by a glutamine (Q). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.062

BayesDel_noAF

Uncertain

-0.030

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.027

Eigen

Uncertain

0.22

Eigen_PC

Uncertain

0.32

FATHMM_MKL

Uncertain

0.94

LIST_S2

Uncertain

0.89

M_CAP

Benign

0.024

MetaRNN

Benign

0.22

MetaSVM

Benign

-0.97

MutationAssessor

Benign

0.81

PrimateAI

Uncertain

0.78

PROVEAN

Benign

0.28

REVEL

Benign

0.25

Sift

Benign

0.41

Sift4G

Uncertain

0.060

Polyphen

0.96

Vest4

0.53

MVP

0.90

MPC

0.77

ClinPred

0.083

GERP RS

4.6

Varity_R

0.20

gMVP

0.79

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