7-5064378-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_021163.4(RBAK):c.922C>T(p.Arg308Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000366 in 1,613,832 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 (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R308Q) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00016 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000024 ( 0 hom. )

Consequence

RBAK
NM_021163.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.452

Variant links:

Genes affected

RBAK (HGNC:17680): (RB associated KRAB zinc finger) This gene encodes a nuclear protein which interacts with the tumor suppressor retinoblastoma 1. The two interacting proteins are thought to act as a transcriptional repressor for promoters which are activated by the E2F1 transcription factor. This protein contains a Kruppel-associated box (KRAB), which is a transcriptional repressor motif. Read-through transcripts that include exons from the downstream gene LOC389458 are expressed from this locus. [provided by RefSeq, Mar 2011]

RBAK links:

RBAK-RBAKDN (HGNC:):

RBAK-RBAKDN links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.16249025).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
RBAK	NM_021163.4 linkuse as main transcript	c.922C>T	p.Arg308Trp	missense_variant	5/5	ENST00000396912.2
RBAK-RBAKDN	NM_001204513.3 linkuse as main transcript	c.238+6599C>T		intron_variant
RBAK	NM_001204456.2 linkuse as main transcript	c.922C>T	p.Arg308Trp	missense_variant	6/6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RBAK	ENST00000396912.2 linkuse as main transcript	c.922C>T	p.Arg308Trp	missense_variant	5/5	1	NM_021163.4	P1	Q9NYW8-1
RBAK	ENST00000353796.7 linkuse as main transcript	c.922C>T	p.Arg308Trp	missense_variant	6/6	2		P1	Q9NYW8-1

Frequencies

GnomAD3 genomes

AF:

0.000158

AC:

AN:

152024

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000480

AC:

AN:

250218

Hom.:

AF XY:

0.00000739

AC XY:

AN XY:

135232

show subpopulations

Gnomad AFR exome

AF:

0.000740

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000239

AC:

AN:

1461690

Hom.:

Cov.:

AF XY:

0.0000206

AC XY:

AN XY:

727130

show subpopulations

Gnomad4 AFR exome

AF:

0.000627

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000348

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000719

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.000158

AC:

AN:

152142

Hom.:

Cov.:

AF XY:

0.000108

AC XY:

AN XY:

74382

show subpopulations

Gnomad4 AFR

AF:

0.000482

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000780

Hom.:

Bravo

AF:

0.000204

ESP6500AA

AF:

0.000681

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000412

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

Oct 05, 2021

The c.922C>T (p.R308W) alteration is located in exon 5 (coding exon 4) of the RBAK gene. This alteration results from a C to T substitution at nucleotide position 922, causing the arginine (R) at amino acid position 308 to be replaced by a tryptophan (W). 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

0.28

BayesDel_addAF

Benign

-0.39

BayesDel_noAF

Benign

-0.43

Cadd

Uncertain

Dann

Uncertain

1.0

DEOGEN2

Benign

0.15

T;T

Eigen

Uncertain

0.26

Eigen_PC

Benign

0.12

FATHMM_MKL

Benign

0.0027

M_CAP

Benign

0.015

MetaRNN

Benign

0.16

T;T

MetaSVM

Benign

-0.73

MutationAssessor

Benign

1.2

L;L

PrimateAI

Uncertain

0.66

PROVEAN

Uncertain

-3.3

D;D

REVEL

Benign

0.13

Sift

Benign

0.067

T;T

Sift4G

Pathogenic

0.0010

D;D

Polyphen

1.0

D;D

Vest4

0.36

MVP

0.23

MPC

0.43

ClinPred

0.39

GERP RS

2.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.18

gMVP

0.36

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