Variant chr18-22936896-T-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_002894.3(RBBP8):c.45T>A(p.Asp15Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,461,826 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

RBBP8
NM_002894.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.00300

Variant links:

Genes affected

RBBP8 (HGNC:9891): (RB binding protein 8, endonuclease) The protein encoded by this gene is a ubiquitously expressed nuclear protein. It is found among several proteins that bind directly to retinoblastoma protein, which regulates cell proliferation. This protein complexes with transcriptional co-repressor CTBP. It is also associated with BRCA1 and is thought to modulate the functions of BRCA1 in transcriptional regulation, DNA repair, and/or cell cycle checkpoint control. It is suggested that this gene may itself be a tumor suppressor acting in the same pathway as BRCA1. Three transcript variants encoding two different isoforms have been found for this gene. More transcript variants exist, but their full-length natures have not been determined. [provided by RefSeq, Jul 2008]

RBBP8 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.02673626).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RBBP8	NM_002894.3 linkuse as main transcript	c.45T>A	p.Asp15Glu	missense_variant	2/19	ENST00000327155.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RBBP8	ENST00000327155.10 linkuse as main transcript	c.45T>A	p.Asp15Glu	missense_variant	2/19	1	NM_002894.3	P1	Q99708-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000795

AC:

AN:

251428

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135890

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:

0.0000653

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000274

AC:

AN:

1461826

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727222

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:

0.0000464

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 09, 2024

The c.45T>A (p.D15E) alteration is located in exon 2 (coding exon 1) of the RBBP8 gene. This alteration results from a T to A substitution at nucleotide position 45, causing the aspartic acid (D) at amino acid position 15 to be replaced by a glutamic acid (E). 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

0.17

BayesDel_addAF

Benign

-0.42

BayesDel_noAF

Benign

-0.66

CADD

Benign

8.1

DANN

Benign

0.82

DEOGEN2

Benign

0.0059

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

Eigen

Benign

-0.88

Eigen_PC

Benign

-0.81

FATHMM_MKL

Benign

0.020

LIST_S2

Benign

0.71

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

M_CAP

Benign

0.0052

MetaRNN

Benign

0.027

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

MetaSVM

Benign

-1.1

MutationTaster

Benign

1.0

N;N;N;N

PrimateAI

Benign

0.40

PROVEAN

Benign

-0.30

.;.;.;.;N;N;N;N;N

REVEL

Benign

0.016

Sift

Benign

0.55

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

Sift4G

Benign

0.68

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

Polyphen

0.0010

.;.;.;.;B;B;.;.;.

Vest4

0.092, 0.11, 0.083

MutPred

0.15

Gain of glycosylation at S17 (P = 0.169);Gain of glycosylation at S17 (P = 0.169);Gain of glycosylation at S17 (P = 0.169);Gain of glycosylation at S17 (P = 0.169);Gain of glycosylation at S17 (P = 0.169);Gain of glycosylation at S17 (P = 0.169);Gain of glycosylation at S17 (P = 0.169);Gain of glycosylation at S17 (P = 0.169);Gain of glycosylation at S17 (P = 0.169);

MVP

0.10

MPC

0.044

ClinPred

0.015

GERP RS

1.3

Varity_R

0.024

gMVP

0.023

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