rs976503237

Positions:

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS2

The NM_000321.3(RB1):c.1083C>A(p.Asn361Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000753 in 1,461,210 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000075 ( 0 hom. )

Consequence

RB1
NM_000321.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: -0.506

Variant links:

Genes affected

RB1 (HGNC:9884): (RB transcriptional corepressor 1) The protein encoded by this gene is a negative regulator of the cell cycle and was the first tumor suppressor gene found. The encoded protein also stabilizes constitutive heterochromatin to maintain the overall chromatin structure. The active, hypophosphorylated form of the protein binds transcription factor E2F1. Defects in this gene are a cause of childhood cancer retinoblastoma (RB), bladder cancer, and osteogenic sarcoma. [provided by RefSeq, Jul 2008]

RB1 links:

LOC112268118 (HGNC:):

LOC112268118 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -7 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.069107205).

BP6

Variant 13-48368560-C-A is Benign according to our data. Variant chr13-48368560-C-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 577206.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=1}.

BS2

High AC in GnomAdExome4 at 11 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
RB1	NM_000321.3 linkuse as main transcript	c.1083C>A	p.Asn361Lys	missense_variant	11/27	ENST00000267163.6	NP_000312.2
LOC112268118	XR_002957522.2 linkuse as main transcript	n.122-3584G>T		intron_variant, non_coding_transcript_variant
RB1	NM_001407165.1 linkuse as main transcript	c.1083C>A	p.Asn361Lys	missense_variant	11/27		NP_001394094.1
RB1	NM_001407166.1 linkuse as main transcript	c.1083C>A	p.Asn361Lys	missense_variant	11/17		NP_001394095.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RB1	ENST00000267163.6 linkuse as main transcript	c.1083C>A	p.Asn361Lys	missense_variant	11/27	1	NM_000321.3	ENSP00000267163	P1
RB1	ENST00000650461.1 linkuse as main transcript	c.1083C>A	p.Asn361Lys	missense_variant	11/27			ENSP00000497193

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000159

AC:

AN:

251274

Hom.:

AF XY:

0.0000295

AC XY:

AN XY:

135798

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:

0.000131

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000753

AC:

AN:

1461210

Hom.:

Cov.:

AF XY:

0.0000124

AC XY:

AN XY:

726950

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:

0.000128

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Retinoblastoma

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Aug 23, 2022

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. ClinVar contains an entry for this variant (Variation ID: 577206). This variant has not been reported in the literature in individuals affected with RB1-related conditions. This variant is present in population databases (no rsID available, gnomAD 0.01%). This sequence change replaces asparagine, which is neutral and polar, with lysine, which is basic and polar, at codon 361 of the RB1 protein (p.Asn361Lys). -

Hereditary cancer-predisposing syndrome

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 13, 2023

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.30

CADD

Benign

2.8

DANN

Benign

0.77

DEOGEN2

Benign

0.37

T;.

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.063

LIST_S2

Benign

0.84

T;T

M_CAP

Benign

0.060

MetaRNN

Benign

0.069

T;T

MetaSVM

Benign

-0.41

MutationAssessor

Benign

1.6

L;.

MutationTaster

Benign

0.99

PrimateAI

Benign

0.42

PROVEAN

Benign

-0.56

N;.

REVEL

Benign

0.15

Sift

Benign

0.61

T;.

Sift4G

Benign

0.27

T;.

Polyphen

0.12

B;.

Vest4

0.17

MutPred

0.43

Gain of ubiquitination at N361 (P = 0.0045);Gain of ubiquitination at N361 (P = 0.0045);

MVP

0.77

MPC

0.51

ClinPred

0.083

GERP RS

-3.2

Varity_R

0.045

gMVP

0.28

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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