dbSNP rs1014776340: RB1:c.-149G>T (chr13-48303764-G-T) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_000321.3(RB1):c.-149G>T variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000801 in 1,248,776 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 Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000073 ( 0 hom. )

Consequence

RB1
NM_000321.3 5_prime_UTR

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1U:5B:1

Conservation

PhyloP100: 2.16

Publications

1 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 links:

RB1-DT (HGNC:42778): (RB1 divergent transcript)

RB1-DT links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -6 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.32).

BS2

High AC in GnomAdExome4 at 8 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

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
RB1	NM_000321.3	MANE Select	c.-149G>T	5_prime_UTR	Exon 1 of 27	NP_000312.2	P06400
RB1	NM_001407165.1		c.-149G>T	5_prime_UTR	Exon 1 of 27	NP_001394094.1	A0A3B3IS71
RB1	NM_001407166.1		c.-149G>T	5_prime_UTR	Exon 1 of 17	NP_001394095.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
RB1	ENST00000267163.6	TSL:1 MANE Select	c.-149G>T	5_prime_UTR	Exon 1 of 27	ENSP00000267163.4	P06400
RB1	ENST00000924352.1		c.-149G>T	5_prime_UTR	Exon 1 of 28	ENSP00000594411.1
RB1	ENST00000650461.1		c.-149G>T	5_prime_UTR	Exon 1 of 27	ENSP00000497193.1	A0A3B3IS71

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152168

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000730

AC:

AN:

1096490

Hom.:

Cov.:

AF XY:

0.00000740

AC XY:

AN XY:

540340

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

21696

American (AMR)

AF:

0.000455

AC:

AN:

17578

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19572

East Asian (EAS)

AF:

0.00

AC:

AN:

26660

South Asian (SAS)

AF:

0.00

AC:

AN:

62360

European-Finnish (FIN)

AF:

0.00

AC:

AN:

31336

Middle Eastern (MID)

AF:

0.00

AC:

AN:

3348

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

867218

Other (OTH)

AF:

0.00

AC:

AN:

46722

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.488

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:

0.0000131

AC:

AN:

152286

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74466

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41556

American (AMR)

AF:

0.000131

AC:

AN:

15308

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5178

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68000

Other (OTH)

AF:

0.00

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000756

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 (1)

Malignant tumor of urinary bladder (1)

not provided (1)

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.32

CADD

Benign

(source)

DANN

Uncertain

0.98

PhyloP100

2.2

PromoterAI

-0.28

Neutral

(source)

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over