Variant chr17-8370056-T-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_001304947.3(KRBA2):c.311A>G(p.Tyr104Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,754 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: not found (cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

KRBA2
NM_001304947.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.509

Variant links:

Genes affected

KRBA2 (HGNC:26989): (KRAB-A domain containing 2) Predicted to enable nucleic acid binding activity. Predicted to be involved in DNA integration and regulation of transcription, DNA-templated. [provided by Alliance of Genome Resources, Apr 2022]

KRBA2 links:

ENSG00000263809 (HGNC:):

ENSG00000263809 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.34350282).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KRBA2	NM_001304947.3 linkuse as main transcript	c.311A>G	p.Tyr104Cys	missense_variant	2/2	ENST00000396267.3	NP_001291876.1	Q6ZNG9A8MX02
KRBA2	NM_213597.3 linkuse as main transcript	c.557A>G	p.Tyr186Cys	missense_variant	2/2		NP_998762.1	Q6ZNG9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
KRBA2	ENST00000396267.3 linkuse as main transcript	c.311A>G	p.Tyr104Cys	missense_variant	2/2	2	NM_001304947.3	ENSP00000379565.3	A8MX02
ENSG00000263809	ENST00000582471.1 linkuse as main transcript	n.*1294A>G		non_coding_transcript_exon_variant	6/6	5		ENSP00000463847.1	J3QQQ9
ENSG00000263809	ENST00000582471.1 linkuse as main transcript	n.*1294A>G		3_prime_UTR_variant	6/6	5		ENSP00000463847.1	J3QQQ9

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251384

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135864

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:

0.00000880

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461754

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727186

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:

0.00000180

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000756

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 01, 2024

The c.557A>G (p.Y186C) alteration is located in exon 2 (coding exon 2) of the KRBA2 gene. This alteration results from a A to G substitution at nucleotide position 557, causing the tyrosine (Y) at amino acid position 186 to be replaced by a cysteine (C). 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

0.22

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Benign

-0.42

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.18

.;T;T;T;.

Eigen

Benign

-0.065

Eigen_PC

Benign

-0.16

FATHMM_MKL

Benign

0.50

LIST_S2

Benign

0.85

.;T;T;.;T

M_CAP

Benign

0.0070

MetaRNN

Benign

0.34

T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.1

.;.;M;M;.

PrimateAI

Uncertain

0.57

PROVEAN

Pathogenic

-5.2

.;D;D;.;.

REVEL

Benign

0.10

Sift

Benign

0.095

.;T;T;.;.

Sift4G

Uncertain

0.0020

.;D;D;.;.

Polyphen

0.98

.;.;D;D;.

Vest4

0.34, 0.33

MVP

0.38

MPC

0.22

ClinPred

0.68

GERP RS

1.3

Varity_R

0.26

gMVP

0.38

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