X-16845050-C-G

Position:

chrX-16845050-C-G

Variant summary

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

The NM_002893.4(RBBP7):c.1263G>C(p.Glu421Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000497 in 1,207,552 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 1 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000089 ( 0 hom., 1 hem., cov: 24)

Exomes 𝑓: 0.0000046 ( 0 hom. 0 hem. )

Consequence

RBBP7
NM_002893.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.13

Variant links:

Genes affected

RBBP7 (HGNC:9890): (RB binding protein 7, chromatin remodeling factor) This protein is a ubiquitously expressed nuclear protein and belongs to a highly conserved subfamily of WD-repeat proteins. It is found among several proteins that binds directly to retinoblastoma protein, which regulates cell proliferation. The encoded protein is found in many histone deacetylase complexes, including mSin3 co-repressor complex. It is also present in protein complexes involved in chromatin assembly. This protein can interact with BRCA1 tumor-suppressor gene and may have a role in the regulation of cell proliferation and differentiation. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Nov 2010]

RBBP7 links:

RBBP7 (HGNC:):

RBBP7 links:

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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=0.17171943).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RBBP7	NM_002893.4 linkuse as main transcript	c.1263G>C	p.Glu421Asp	missense_variant	12/12	ENST00000380087.7	NP_002884.1	Q16576-1Q6FHQ0
RBBP7	NM_001198719.2 linkuse as main transcript	c.1395G>C	p.Glu465Asp	missense_variant	12/12		NP_001185648.1	Q16576-2
RBBP7	XM_047442291.1 linkuse as main transcript	c.1530G>C	p.Glu510Asp	missense_variant	12/12		XP_047298247.1
RBBP7	XM_047442292.1 linkuse as main transcript	c.1398G>C	p.Glu466Asp	missense_variant	12/12		XP_047298248.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RBBP7	ENST00000380087.7 linkuse as main transcript	c.1263G>C	p.Glu421Asp	missense_variant	12/12	1	NM_002893.4	ENSP00000369427.3		Q16576-1

Frequencies

GnomAD3 genomes

AF:

0.00000891

AC:

AN:

112251

Hom.:

Cov.:

AF XY:

0.0000291

AC XY:

AN XY:

34415

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000278

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000330

AC:

AN:

181918

Hom.:

AF XY:

0.0000301

AC XY:

AN XY:

66500

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000435

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:

0.00000456

AC:

AN:

1095301

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

360811

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000133

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000217

GnomAD4 genome

AF:

0.00000891

AC:

AN:

112251

Hom.:

Cov.:

AF XY:

0.0000291

AC XY:

AN XY:

34415

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000278

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.0000165

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

Aug 26, 2022

The c.1395G>C (p.E465D) alteration is located in exon 12 (coding exon 12) of the RBBP7 gene. This alteration results from a G to C substitution at nucleotide position 1395, causing the glutamic acid (E) at amino acid position 465 to be replaced by an aspartic acid (D). 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

-0.17

BayesDel_noAF

Benign

-0.16

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.013

T;T;.;.

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.88

D;D;D;D

M_CAP

Benign

0.052

MetaRNN

Benign

0.17

T;T;T;T

MetaSVM

Benign

-0.66

MutationAssessor

Benign

1.2

.;L;.;.

PrimateAI

Uncertain

0.67

PROVEAN

Benign

-0.83

N;N;N;N

REVEL

Benign

0.27

Sift

Benign

0.16

T;T;T;T

Sift4G

Benign

0.096

T;T;T;T

Polyphen

0.026, 0.0040

.;B;.;B

Vest4

0.48, 0.50, 0.49

MutPred

0.16

.;Loss of loop (P = 0.1258);.;.;

MVP

0.96

MPC

1.3

ClinPred

0.080

GERP RS

5.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.37

gMVP

0.29

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