13-48465271-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -11 ACMG points: 0P and 11B. BP4_ModerateBP6BS1BS2

The NM_000321.3(RB1):c.2392C>T(p.Arg798Trp) variant causes a missense change. The variant allele was found at a frequency of 0.000123 in 1,612,902 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R798Q) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00050 ( 0 hom., cov: 29)

Exomes 𝑓: 0.000084 ( 2 hom. )

Consequence

RB1
NM_000321.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:6

Conservation

PhyloP100: 4.42

Publications

16 publications found

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 Gene-Disease associations (from GenCC):

hereditary retinoblastoma
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P
retinoblastoma
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
melanoma
Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics

RB1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -11 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.22307894).

BP6

Variant 13-48465271-C-T is Benign according to our data. Variant chr13-48465271-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 410950.

BS1

Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.000499 (76/152198) while in subpopulation AMR AF = 0.00418 (64/15300). AF 95% confidence interval is 0.00336. There are 0 homozygotes in GnomAd4. There are 42 alleles in the male GnomAd4 subpopulation. Median coverage is 29. This position passed quality control check.

BS2

High AC in GnomAd4 at 76 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000321.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RB1	NM_000321.3	MANE Select	c.2392C>T	p.Arg798Trp	missense	Exon 23 of 27	NP_000312.2	P06400
	RB1	NM_001407165.1		c.2392C>T	p.Arg798Trp	missense	Exon 23 of 27	NP_001394094.1	A0A3B3IS71

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
RB1	ENST00000267163.6	TSL:1 MANE Select	c.2392C>T	p.Arg798Trp	missense	Exon 23 of 27	ENSP00000267163.4	P06400
RB1	ENST00000467505.6	TSL:1	n.*1760C>T		non_coding_transcript_exon	Exon 18 of 22	ENSP00000434702.1	Q92728
RB1	ENST00000467505.6	TSL:1	n.*1760C>T		3_prime_UTR	Exon 18 of 22	ENSP00000434702.1	Q92728

Frequencies

GnomAD3 genomes

AF:

0.000500

AC:

AN:

152080

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00419

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000385

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.000956

GnomAD2 exomes

AF:

0.0000795

AC:

AN:

251446

AF XY:

0.0000736

show subpopulations

Gnomad AFR exome

AF:

0.000185

Gnomad AMR exome

AF:

0.000202

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000440

Gnomad OTH exome

AF:

0.000489

GnomAD4 exome

AF:

0.0000842

AC:

123

AN:

1460704

Hom.:

Cov.:

AF XY:

0.0000702

AC XY:

AN XY:

726722

show subpopulations

African (AFR)

AF:

0.000149

AC:

AN:

33462

American (AMR)

AF:

0.000626

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.0000383

AC:

AN:

26132

East Asian (EAS)

AF:

0.0000504

AC:

AN:

39676

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86230

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000558

AC:

AN:

1110934

Other (OTH)

AF:

0.000381

AC:

AN:

60362

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.487

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000499

AC:

AN:

152198

Hom.:

Cov.:

AF XY:

0.000564

AC XY:

AN XY:

74432

show subpopulations

African (AFR)

AF:

0.000169

AC:

AN:

41508

American (AMR)

AF:

0.00418

AC:

AN:

15300

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.000386

AC:

AN:

5182

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10586

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68006

Other (OTH)

AF:

0.000946

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.510

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000134

Hom.:

Bravo

AF:

0.000933

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000107

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.000237

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

Retinoblastoma (3)

Hereditary cancer-predisposing syndrome (2)

not provided (1)

RB1-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.56

BayesDel_addAF

Uncertain

0.15

BayesDel_noAF

Pathogenic

0.27

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.91

Eigen

Uncertain

0.53

Eigen_PC

Uncertain

0.50

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.96

M_CAP

Uncertain

0.15

MetaRNN

Benign

0.22

MetaSVM

Uncertain

0.31

MutationAssessor

Benign

1.8

PhyloP100

4.4

PrimateAI

Uncertain

0.75

PROVEAN

Uncertain

-4.0

REVEL

Uncertain

0.63

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0010

Polyphen

1.0

Vest4

0.82

MVP

0.95

MPC

1.3

ClinPred

0.44

GERP RS

4.1

Varity_R

0.62

gMVP

0.79

Mutation Taster

=68/32

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over